© 2018 BMC. All Rights Reserved.

BMC STOCK HOLDINGS, INC.May 2018 Investor Presentation

CLICK TO EDIT TITLEDISCLAIMER

This presentation contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements in this document may include, without limitation, statements regarding sales growth, price changes, earnings performance, strategic direction and the demand for our products. Forward-looking statements are typically identified by words or phrases such as "may," "might," "predict," "future," "seek to," "assume," "goal," "objective," "continue," "will," "could," "should," "would," "anticipate," "estimate," "expect," "project," "intend," "plan," "believe," "target," "prospects," "guidance," "possible," "predict," "propose," "potential" and "forecast," or the negative of such terms and other words, terms and phrases of similar meaning. Forward-looking statements involve estimates, expectations, projections, goals, forecasts, assumptions, risks and uncertainties, many of which are outside BMC's control. BMC cautions readers that any forward-looking statement is not a guarantee of future performance and that actual results could differ materially from those contained in the forward-looking statement; therefore, investors and shareholders should not place undue reliance on such statement. There are a number of risks and uncertainties that could cause actual results to differ materially from the forward-looking statements included in this communication.

A number of important factors could cause actual results to differ materially from those indicated by the forward-looking statements. These factors include without limitation: the state of the homebuilding industry and repair and remodeling activity, the economy and the credit markets; the impact of potential changes in our customer or product sales mix; our concentration of business in the Texas, California and Georgia markets; the potential loss of significant customers or a reduction in the quantity of products they purchase; seasonality and cyclicality of the building products supply and services industry; competitive industry pressures and competitive pricing pressure from our customers and competitors; fluctuation of commodity prices and prices of our products; our exposure to product liability, warranty, casualty, construction defect, contract, tort, employment and other claims and legal proceedings; our ability to maintain profitability; our ability to retain our key employees and to attract and retain new qualified employees, while controlling our labor costs; product shortages, loss of key suppliers or failure to develop relationships with qualified suppliers, and our dependence on third-party suppliers and manufacturers; the implementation of our supply chain and technology initiatives; the impact of long-term non-cancelable leases at our facilities; our ability to effectively manage inventory and working capital; the credit risk from our customers; the impact of pricing pressure from our customers; our ability to identify or respond effectively to consumer needs, expectations, market conditions or trends; our ability to successfully implement our growth strategy; the impact of federal, state, local and other laws and regulations; the impact of changes in legislation and government policy; the impact of unexpected changes in our tax provisions and adoption of new tax legislation; our ability to utilize our net operating loss carryforwards; natural or man-made disruptions to our distribution and manufacturing facilities; our exposure to environmental liabilities and subjection to environmental laws and regulation; the impact of health and safety laws and regulations; the impact of disruptions to our information technology systems; cybersecurity risks; our exposure to losses if our insurance coverage is insufficient; our ability to operate on multiple Enterprise Resource Planning ("ERP") information systems and convert multiple systems to a single system; the impact of our indebtedness; the various financial covenants in our secured credit agreement and senior secured notes indenture; and other factors discussed or referred to in the "Risk Factors" section of BMC's most recent Annual Report on Form 10-K filed with the SEC on March 1, 2018.

All such factors are difficult to predict and are beyond BMC's control. All forward-looking statements attributable to BMC or persons acting on BMC's behalf are expressly qualified in their entirety by the foregoing cautionary statements. All such statements speak only as of the date made, and BMC undertakes no obligation to update or revise publicly any forward-looking statements, whether as a result of new information, future events or otherwise.

Basis of Presentation

On December 1, 2015, the merger (the “Merger”) of Stock Building Supply Holdings, Inc. (“SBS” or “Legacy SBS”) with Building Materials Holding Corporation (“LegacyBMC”) was completed. Some of this presentation includes financial and operating results, plans, objectives, expectations and intentions, and other statements that arenot historical facts related to the Merger. The Merger was accounted for as a “reverse acquisition” under the acquisition method of accounting, with Legacy SBS treatedas the legal acquirer and Legacy BMC treated as the acquirer for accounting purposes. As such, the Company has accounted for the Merger by using Legacy BMChistorical information and accounting policies and adding the assets and liabilities of Legacy SBS as of the completion date of the Merger at their estimated fair values.As a result, current year results reported pursuant to U.S. generally accepted accounting principles (“GAAP”) are not comparable to periods prior to the completion ofthe Merger.

2

CLICK TO EDIT TITLENON-GAAP (ADJUSTED) FINANCIAL MEASURES

3

Adjusted net sales, Adjusted gross profit, Adjusted EBITDA, Adjusted EBITDA margin, Adjusted net income and Adjusted net income per diluted share are intended as

supplemental measures of the Company’s performance that are not required by, or presented in accordance with, GAAP. The Company believes that Adjusted net sales,

Adjusted gross profit, Adjusted EBITDA, Adjusted EBITDA margin, Adjusted net income and Adjusted net income per diluted share provide useful information to

management and investors regarding certain financial and business trends relating to the Company’s financial condition and operating results.

• Adjusted net sales is defined as BMC net sales plus pre-Merger SBS net sales.

• Adjusted gross profit is defined as BMC gross profit plus pre-Merger SBS gross profit and inventory step-up charges.

• Adjusted EBITDA is defined as net income (loss) adjusted for pre-Merger SBS (loss) income from continuing operations, interest expense, income tax expense (benefit),

depreciation and amortization, Merger and integration costs, restructuring expense, inventory step-up charges, non-cash stock compensation expense, loss on debt

extinguishment, headquarters relocation expense, insurance deductible reserve adjustment and fire casualty loss, loss on portfolio transfer, acquisition costs and other

items and impairment of assets.

• Adjusted EBITDA margin is defined as Adjusted EBITDA divided by net sales or, for 2015 and prior periods, Adjusted net sales.

• Adjusted net income is defined as BMC net income adjusted for merger and integration costs, non-cash stock compensation expense, acquisition costs, other items and

after-tax effecting those items.

• Adjusted net income per diluted share is defined as Adjusted net income divided by diluted weighted average shares.

Company management uses Adjusted net sales, Adjusted gross profit, Adjusted EBITDA, Adjusted EBITDA margin, Adjusted net income and Adjusted net income per

diluted share for trend analyses, for purposes of determining management incentive compensation and for budgeting and planning purposes. Adjusted net sales and

Adjusted EBITDA are used in monthly financial reports prepared for management and the board of directors. The Company believes that the use of Adjusted net sales,

Adjusted gross profit, Adjusted EBITDA, Adjusted EBITDA margin, Adjusted net income and Adjusted net income per diluted share provide additional tools for investors to

use in evaluating ongoing operating results and trends and in comparing the Company’s financial measures with other distribution and retail companies, which may present

similar non-GAAP financial measures to investors. However, the Company’s calculation of Adjusted net sales, Adjusted gross profit, Adjusted EBITDA, Adjusted EBITDA

margin, Adjusted net income and Adjusted net income per diluted share are not necessarily comparable to similarly titled measures reported by other companies. Company

management does not consider Adjusted net sales, Adjusted gross profit, Adjusted EBITDA, Adjusted EBITDA margin, Adjusted net income and Adjusted net income per

diluted share in isolation or as alternatives to financial measures determined in accordance with GAAP. The principal limitation of Adjusted EBITDA and Adjusted net

income is that they exclude significant expenses and income that are required by GAAP to be recorded in the Company’s financial statements. Some of these limitations

are: (i) Adjusted EBITDA and Adjusted net income do not reflect changes in, or cash requirements for, working capital needs; (ii) Adjusted EBITDA does not reflect interest

expense, or the requirements necessary to service interest or principal payments on debt; (iii) Adjusted EBITDA does not reflect income tax expenses or the cash

requirements to pay taxes; (iv) Adjusted net income and Adjusted EBITDA do not reflect historical cash expenditures or future requirements for capital expenditures or

contractual commitments; (v) although depreciation and amortization charges are non-cash charges, the assets being depreciated and amortized will often have to be

replaced in the future and Adjusted EBITDA and Adjusted net income do not reflect any cash requirements for such replacements and (vi) Adjusted net income and

Adjusted EBITDA do not consider the potentially dilutive impact of issuing non-cash stock-based compensation. In order to compensate for these limitations, management

considers Adjusted net sales, Adjusted EBITDA and Adjusted net income in conjunction with GAAP results. Readers should review the reconciliations of net sales to

Adjusted net sales, gross profit to Adjusted gross profit, net income (loss) to Adjusted EBITDA and Adjusted net income, included in the Appendix, and should not rely on

any single financial measure to evaluate the Company’s business.

© 2018 BMC. All Rights Reserved.

COMPANY OVERVIEW1

CLICK TO EDIT TITLEBMC COMPANY SNAPSHOT – PROVIDING INNOVATIVE SOLUTIONS NASDAQ LISTED: BMCH

5

2017 Product & Service Mix▪ A leading national building products solutions provider with

$3.4 billion of net sales and $200 million of Adjusted

EBITDA(1) for 2017

▪ Locations in 19 states representing 66% of 2017 single-

family building permits

▪ Significant market presence in 45 attractive metropolitan

areas

▪ Focus on differentiated, value-added products and services

that meet critical industry needs

▪ Proven growth track record (~24% Adjusted EBITDA1 CAGR

since 2015) with significant future opportunities as housing

market expands

Design

Services

Component

Manufacturing

Millwork

ManufacturingTurnkey

Solutions

103 Distribution Yards 51 Ready-Frame,

EWP, Truss & Panel

Manufacturing

49 Millwork

Operations

Installation

Services

Design Centers &

Showrooms

eBusiness

Platform

Logistics, Services

& eCommerce

Distribution

Services

Structural Components,

16%

Lumber & Sheet Goods,

33%

Millwork, Windows & Doors,

27%

Other Bldg. Products & Services,

24%

1. See Non-GAAP (Adjusted) Financial Measures page of this presentation for definition of Adjusted EBITDA and a reconciliation thereof to net income, the most directly comparable GAAP measure..

Product categories are shown a % of 2017 net sales

CLICK TO EDIT TITLESTRATEGIC FOOTPRINT IN HIGHLY ATTRACTIVE, LONG-TERM

GROWTH MARKETS

6

Mid & South Atlantic

26%

West South Central

33%

Mountain23%

Pacific18%

2017 Sales by U.S. Census DivisionCompany Footprint

FL

NM

TX

MT

COUT

ID

NV

WA

CA

PA

VA

AR

GA

103 Distribution locations

in 19 states

51Ready-Frame, EWP,

Truss & Panel

Manufacturing Facilities

49Millwork

operations

66% of 2017 single-family

building permits

Regional categories are shown a % of 2017 net sales

WV

CLICK TO EDIT TITLE

▪ Diverse base of customers ranging from well-

known national builders to small regional and

local players

▪ No single customer greater than 6% of total

net sales

▪ Enhanced capabilities to serve attractive

professional repair and remodeling contractor

segment

Select Customers

Multi-Family &

Commercial Contractors

14%

Repair & Remodel

Contractors

11%

Single-Family

Homebuilders

75%

National Homebuilders Regional Homebuilders Multi-family (millwork)

2017 Customer Mix

HIGHLY DIVERSIFIED AND GROWING CUSTOMER BASE

7

Customer categories are shown as a % of 2017 net sales

CLICK TO EDIT TITLEVALUE-ADDED SERVICES SUPPORT JOB SITE EXCELLENCEONE-STEP VALUE CHAIN – SHOWROOM TO JOB-SITE…CONTRACTOR TO CLIENT

8

▪ Providing differentiated solutions and

proprietary services that support our

unique value proposition

▪ Driving enhanced productivity and

customer satisfaction

▪ One-step distributor for premier

building products manufacturers;

critical link in building supply chain

for customers

▪ Keen understanding of unique

construction codes, regional product

preferences and local distribution

infrastructure

CLICK TO EDIT TITLE

BMC Provides Strategic Go-to-Market Options for Suppliers

▪ Diverse base of leading building products manufacturers

▪ One-step value-added distributor providing direct access to thousands of customers

DIVERSITY OF SUPPLIER BASESTRATEGIC AGREEMENTS IN PLACE WITH LEADING BUILDING PRODUCT SUPPLIERS

9

© 2018 BMC. All Rights Reserved.

FOCUSED GROWTH STRATEGY2

SHARPENING THE FOCUS ON OUR GROWTH STRATEGIES

STRATEGIC PRIORITIES

Achieve Industry-Leading Financial Performance through Customer Service Leadership and

Operational Excellence

Organic Growth of

Value Added Products

and Segments

Deliver Operational

Excellence with the BMC

Operating System

Build High Performing

Culture

Pursue

Strategic Expansion

Balance Customer Portfolio:

• Maximize Single Family Potential

• Grow Multi-Family in select markets

• Grow Pro Remodeling Segment

Increase Mix of Value Added

Products:

• Millwork

• Windows

• Doors

• Components

PIL

LA

RS

1 2 3 4

GO

AL

Ser

vice

Imp

rove

men

t

Op

tim

ize

Pro

fita

bili

ty

Val

ue-

Ad

ded

Cap

abili

ties

Co

mm

un

icat

ion

Best in Class Customer Service

Optimize Profitability:

• Profitable Pricing

• Purchasing Rigor

• SG&A Optimization

Drive Continuous Improvement

Performance Management

BMC Leadership Academy:

• Talent Development

• Recruiting

College Graduate Management

Training Program

Areas of Focus for Tuck-In

Acquisitions:

• Value Added Products

• Pro Remodel

• Improved Local Scale

• Expand GeographicallyKE

Y A

CT

IVIT

IES

Solid Balance Sheet Provides Foundation for Growth

11

CLICK TO EDIT TITLEREADY-FRAME® - SIGNIFICANT GROWTH POTENTIALOPPORTUNITY TO TRANSITION COMMODITY LUMBER SALES TO VALUE-ADDED

12

Less Risk. Less Labor. Less Cost

Rea

dy-F

ram

e S

ales

(dol

lars

in m

illio

ns)

READY-FRAME video:

https://www.youtube.com/watch?v=REv665u2QRI

$29.2

$171.2

FY 2013 FY 2014 FY 2015 FY 2016 FY 2017

CLICK TO EDIT TITLEWHY READY-FRAME?A WIN-WIN OFFERING FOR BMC AND FOR CUSTOMERS

13

For Builders For Framers For BMC

Shortens cash conversion cycle

time; Less framing time needed

Can frame 20 – 30% more

homes in same amount of time (Note: framers are typically paid by the square foot.)

Higher margin offering than

traditional dimensional lumber

packages

Less labor needed (particularly helpful

given the current labor shortages)

Safer, cleaner jobsite – Potential

reduction in jobsite injuries

Helps to solidify the Company’s

position as a solutions provider

Safer – less cutting on the

jobsite; likely means fewer

worker’s compensation claims

Framing becomes easier with

each subsequent Ready-Frame

package

Fewer trips to jobsite (No last

minute orders or extra lumber

returns)

Greener and Cleaner – less

waste and additional savings on

disposal costs

Promotes accuracy;

Architectural errors are

generally caught prior to framing

Opportunity to cross-sell /

up-sell products

Entire house package

guaranteed to 1/16th of an inch,

which should result in fewer

warranty claims

Benefits of READY-FRAME:

COUTNV

WA

CA

Washington, DC

MTID

NM

TXGA

NC

PA

Ready-Frame® location

CLICK TO EDIT TITLEBMC’S LEAN EBUSINESS EVOLUTIONBUILDING A TECHNOLOGY PLATFORM TO ENABLE AND LEVERAGE PROFITABLE

GROWTH

14

>92%

1. Reduced product costs from Photo Proof of Delivery, which has reduced Claims, including Returns, Damages and Missing Product

2. As of 3/31/18, transactional capabilities are available in 16 markets; rollout expected to continue following ERP conversions.

3. Conversions are expected to continue through early 2019

Single

ERP

Logistics Solutions

↑ Driver Productivity

↑ Customer Satisfaction

↑ Asset Utilization

↓ Product Costs1

E-Commerce2

↑ Ease of Accessibility

↑ Customer Productivity

↑ Associate Productivity

↑ New Customer Leads

Installation Services

↑ Resource Management

↑ Communication & Document

Management

↑ Completion Performance

Integrating Value-Added Solutions Around a Single ERP

3

CLICK TO EDIT TITLE24X7 TRANSACTIONAL FRONT-END TO ERP ENHANCES CUSTOMER EXPERIENCE / PRODUCTIVITY

15

Easy, Fast, Convenient

▪ Intuitive interface

▪ Accessible 24x7

▪ Mobile based platform

▪ Full breadth of products

▪ Customer specific pricing

▪ Product availability and lead

times

Professional Resources

▪ Robust building science content:

articles, videos, project

management tools

▪ “How-to” articles

▪ Product search with photos,

specs, comparison tools

▪ Idea gallery with room scenes

▪ Interactive design tools

Work More Efficiently

▪ Order Management Tools: place

orders, check order status, create

reorder lists

▪ Account management Tools: Pay

invoices, assign users and admin

permissions, view history

▪ Configure custom millwork

▪ Manage business digitally

Introducing a Brand New Tool for our Customer’s Belt

Note: Transactional capabilities are not yet available in all markets. As of 3/31/18, transactional capabilities are available in 16 markets; rollout expected to continue following ERP conversions.

CLICK TO EDIT TITLE

Reduce Cost Structure

Gain Efficiencies Using Lean Principles

Best-in-Class Customer Service

OPERATIONAL EXCELLENCE TO DRIVE

CONTINUOUS IMPROVEMENT

16

Using Lean principles to identify opportunities and create best practices to improve

service, increase efficiencies and remove costs from the business.

Increase Productivity

Drive Continuous Improvement

CLICK TO EDIT TITLECONTINUING TO BUILD A HIGH PERFORMANCE CULTURE

17

❑Action-oriented operating

reviews

❑Regular employee feedback

❑Improvement based incentives

❑Bi-Annual calibration of talent

and succession planning

❑Multi-phased approach to

developing BMC leaders

❑Focused on developing strong

location, sales, and market

leaders

❑Heavy emphasis on

developing High Potentials and

future Leaders

❑Recruiting and developing for

succession

❑Focus on Sales, Leadership,

and Design

❑Programs timing, 6-9 months

❑Targeted recruiting in key

geographic areas and schools

that fit BMC culture

Leadership Development Trainee ProgramPerformance Management

CLICK TO EDIT TITLEPOSITIONED TO UTILIZE M&A TO DRIVE FUTURE GROWTHFRAGMENTED MARKET COMBINED WITH PROVEN AND DISCIPLINED M&A PROCESS

Fragmentation Presents Significant Consolidation Opportunities

▪ Leverage profile provides financial flexibility to pursue

accretive tuck-in acquisitions to enhance our value

added offerings, customer base and/or geographic

presence

▪ Recent acquisitions:▪ Shone Lumber (Mar ‘18) – solid customer base in DE &

Southeast PA, including strong Custom Builder and

Professional Remodeling relationships

▪ TexPly (Apr ‘17) – leading supplier of millwork and doors

for single-family production builders in the DFW area

▪ Code Plus (Mar ‘17) – DC area truss manufacturer

Builders FirstSource 7%

BMC 3%

84 Lumber 3%

US LBM 3%

Carter Lumber 1%

Others 83%

$7,034

$3,366 $3,302 $3,092

$1,365 $559

($m)

M&A OpportunityLBM Dealer Market Fragmentation (1)

LBM Dealers 2017 Total Net Sales (1)

Average of Top

100 LBM Dealers

Public LBM Dealers Leverage Profile

1. Source: 2018 ProSales 100 rankings of pro dealers with manufacturing capabilities; Market Size based on Census Bureau data

2. US LBM is not public but filed an S-1 indicating their intention to go public; Leverage for US LBM was calculated using data provided for the “Successor Company” in their S-1/A filing filed on 3/22/18; The leverage calculation used was Total Debt of the

Successor Company at 12/31/17 divided by TTM Adjusted EBITDA at 12/31/17 of the Successor Company as defined in their S-1 filing

3. Leverage for BLDR is the ratio of net debt at Mar. 31, 2018 to Adjusted EBITDA for the twelve months ended Mar. 31, 2018 as reported in BLDR’s Investor Presentation on May 10, 2018.

4. BMC’s calculation of leverage is the ratio of Long Term Debt to LTM Adjusted EBITDA as of Mar 31, 2018.

18

As of 3/31/18As of 3/31/18As of 12/31/17

1.7x(4)

4.6x(3)

4.9x(2)

© 2018 BMC. All Rights Reserved.

FINANCIAL OVERVIEW &

Q1 18 RESULTS3

CLICK TO EDIT TITLE

$93

$114 $130

$194 $200

3.8%

4.4%4.6%

6.3% 5.9%

$0

$50

$100

$150

$200

$250

2013 2014 2015 2016 2017

$531

$603

$670

$745 $796

22.1%

23.1%

23.9% 24.1%23.6%

$0

$160

$320

$480

$640

$800

2013 2014 2015 2016 2017

$34

$62 $59

$53

$66

$0

$20

$40

$60

$80

2013 2014 2015 2016 2017

$2,407 $2,607

$2,801

$3,094 $3,366

$0

$700

$1,400

$2,100

$2,800

$3,500

2013 2014 2015 2016 2017

Adjusted Net Sales (1) ($mm) Adjusted Gross Profit (1) ($mm)

Adjusted EBITDA (1) ($mm)

1. See Non-GAAP (Adjusted) Financial Measures page of this presentation for definition of Adjusted net sales, Adjusted gross profit and Adjusted EBITDA.

2. Pro Forma Capital Expenditures including both legacy BMC and legacy Stock Building Supply; Also includes capital leases.

3. Excludes $15mm of capital expenditures related to the purchase of a facility which was sold shortly thereafter as part of a sale-lease back.

Capital Expenditures(2) ($mm)

(3)

HISTORICAL FINANCIAL PERFORMANCE

20

CLICK TO EDIT TITLEFIRST QUARTER 2018 HIGHLIGHTS

21

Strong Growth

in Value-Added

Components

Gross Profit

Improvement

Improved

Profitability• Net income grew $11.6 million to $15.4 million

• Adjusted earnings per share1 of $0.29, up $0.18

Adjusted

EBITDA1

Growth

• Adjusted EBITDA1 up $13.6 million to $47.2 million

• Adjusted EBITDA margin1 up 130 bps over Q1 17

• Gross profit dollars up 11.7%, gross margin up 40 bps

• Reflects 100 bps year-over-year improvement in gross margin within the

Lumber & Lumber Sheet Goods product category

• Structural Components growth of 23.6%

• $50 million in Q1 Ready-Frame® sales, up 47%

• Total net sales up 10.1%

1. Adjusted earnings per share, Adjusted EBITDA and Adjusted EBITDA margin are non-GAAP financial measures. See Non-GAAP (Adjusted) Financial Measures pages of this presentation for definition of Adjusted EBITDA and a reconciliation to

net income, the most directly comparable GAAP measure.

Operating

Cash Flow• Delivered $23.2 million of operating cash flow

Operational

Excellence

• Unlocking productivity opportunities through LEAN training

• Improving efficiency in our manufacturing and distribution operations

• Investing to increase automation in our processes

CLICK TO EDIT TITLEQ1 2018 FINANCIAL RESULTS

22

• Net sales growth of 10.1%

• Commodity inflation adds $51 million to net

sales as average selling prices on lumber

and sheet goods up ~21% vs. prior year

• Sales from TexPly, Code Plus and first

month of Shone Lumber total $21.4 million

• Strong 23.6% growth in structural

components

• Growth in single-family and professional

remodeling partially offset by declines in

multi-family and commercial customer type

• 41% improvement in Adjusted EBITDA1

• Inflationary benefits accelerate as higher

prices more fully absorbed

• Lumber and lumber sheet goods gross

margin up 100 bps primarily due to

temporary drop in structural panel market

• Lower than average contribution from

acquisitions primarily due to Q1 seasonality

Q1 2018 Net Sales Bridge Q1 2018 Commentary

Q1 2018 Adjusted EBITDA1 Bridge

$757.7

$51.4

$21.4

$18.3

$700

$725

$750

$775

$800

$825

$850

Q1 '17 Sales Lumber &Sheet Goods

Inflation

Acquisitions Organic &Other Growth

Multi-family &Commercial

Q1 '18 Sales

($14.6)

$834.2

$33.6

$7.3

$2.9$2.4 $1.0

$30

$35

$40

$45

$50

Q1 '17AdjustedEBITDA

CommodityInflation

Change inLumber and

Lumber SheetGoods Gross

Margin

VolumeGrowth &

OtherOperating

Improvements

Acquisitions Q1 '18AdjustedEBITDA

$47.2

1. Adjusted EBITDA is a non-GAAP financial measure. See Non-GAAP (Adjusted) Financial Measures pages of this presentation for definition of Adjusted EBITDA and a reconciliation to net income, the most directly comparable GAAP measure.

$ in millions

$ in millions

CLICK TO EDIT TITLE

2018 organic volume growth

2018 commodity inflation

2018 sales growth from completed acquisitions1

2018 total net sales growth

2018 Incremental Operating Margins2, 3

Longer-term Incremental Operating Margins2

SOLID START IN Q1 RAISES CONFIDENCE FOR FULL YEAR 2018

231. Includes Code Plus, TexPly and Shone Lumber acquisitions

2. Incremental operating margin is defined as the change in operating income divided by the change in net sales.

3. Revised from previous expectation provided on Feb 27, 2018

2018 Year Over Year End Market Growth Assumptions Q1 2018 BMC Customer Mix

76.4%

11.4%

12.2%

Multi-Family,

Commercial & Other

Contractors

Remodeling

Contractors

Single-Family

Homebuilders

BMC Full Year 2018 Expectations

Fundamentals Support Continued Improvement

Single-Family Starts

Median Size of New Home

Professional Remodeling

Multi-Family Starts

5% - 8%

1% - 2%

3% - 5%

8% - 12%

2% - 5%

Deceleration in YoY benefits vs. Q1

Up 2%

Up 6% – 11%

9% – 12%

10% – 15%

CLICK TO EDIT TITLESTRONG BALANCE SHEET TO SUPPORT GROWTHFLEXIBILITY FOR CONTINUED INVESTMENTS AND DISCIPLINED, ACCRETIVE M&A

24

▪ Improving Adjusted EBITDA1 trends

▪ Working capital usage ~12-13% of sales

▪ 2018 Expectations:

▪ Capital expenditures: $55 to $65 million

▪ Depreciation expense: $50 to $55 million2

▪ Amortization expense: $15 to $16 million

▪ Interest expense: $24 to $26 million

▪ Effective tax rate: 25%

Attractive Cash Flow Dynamics

3/31/2018 Long-Term Debt

$357 million

Long-Term Debt/ LTM 3/31/2018

Adjusted EBITDA (1)

1.7x

▪ $375 million revolving ABL facility with

extended maturity; $12.2 million

outstanding borrowings at 3/31/2018

▪ $301.5 million of availability for strategic

investments and seasonal working capital

needs

▪ $350 million 5.5% Senior Secured Notes

maturing 2024

▪ Leverage target of 2.0x to 2.5x allows

flexibility to make strategic investments

but remains prudent

Balance Sheet Positioned to Invest

1. Adjusted EBITDA is a non-GAAP financial measure. See Non-GAAP (Adjusted) Financial Measures pages of this presentation for definition of Adjusted EBITDA.

2. Revised from previous expectation provided on Feb 27, 2018

CLICK TO EDIT TITLE

0

400

800

1,200

1,600

1968

1971

1974

1977

1980

1983

1986

1989

1992

1995

1998

2001

2004

2007

2010

2013

2016

U.S. Single Family Housing Starts

DRIVING LONG-TERM SHAREHOLDER VALUE --LEVERAGING STRONG FOUNDATION AND CORE CAPABILITIES TO

ACCELERATE PROFITABLE GROWTH

PROFITABLE GROWTH

25

Favorable

Macro Trends

Differentiated Value-

Added Solutions

Growth Strategies to

Drive Profitable

Growth

✓ Job & Wage Growth

✓ Consumer Confidence

✓ Low Levels of Inventory

✓ Favorable demographics

✓ Ready-Frame® -Revolutionary framing solution,

helping builders navigate labor

shortage

✓ E-Business Suite –Providing customers what they

want when and how they want it

✓ Wide Breadth of Value-

Added Offerings:

➢ Structural Components,

including EWP, trusses,

wall panels, etc.

➢ Millwork, Doors &

Windows

✓ Expand Value-Added

Categories:

➢ Structural Components

➢ Millwork, Doors & Windows

✓ Execute with Culture of

Operational Excellence,

Customer Service and

Innovation

✓ Strategic Tuck-In

Acquisitions

✓ Gain Market Share in

Professional Remodeling

Solid Balance Sheet Provides Foundation for Growth

(1) Source: United States Census Bureau.

(1)

50 year

average

© 2018 BMC. All Rights Reserved.

APPENDIX

BMC STOCK HOLDINGS REPORTED (GAAP) INCOME STATEMENT

($ths) FY 2015 Q1 16 Q2 16 Q3 16 Q4 16 FY 2016 Q1 17 Q2 17 Q3 17 Q4 17 FY 2017 Q1 18

Net sales 1,576,746 727,418 797,547 821,204 747,574 3,093,743 757,700 886,375 881,012 840,881 3,365,968 834,202

Cost of sales 1,215,336 560,801 605,892 618,238 566,847 2,351,778 579,503 674,688 671,467 644,795 2,570,453 635,118

Gross profit 361,410 166,617 191,655 202,966 180,727 741,965 178,197 211,687 209,545 196,086 795,515 199,084

SG&A 306,843 141,781 139,897 149,498 140,623 571,799 148,888 157,789 158,193 154,676 619,546 160,204

Depreciation expense 15,700 8,792 9,290 9,784 10,575 38,441 10,561 10,941 11,053 10,467 43,022 9,506

Amortization expense 3,626 5,245 5,288 5,349 4,839 20,721 3,821 4,100 4,026 4,056 16,003 3,657

Impairment of assets - 11,883 - - 45 11,928 - 26 409 - 435 -

Merger and integration

costs22,993 2,836 3,597 4,655 4,252 15,340 4,441 6,324 2,574 1,997 15,336 1,687

Income (loss) from

operations12,248 (3,920) 33,583 33,680 20,393 83,736 10,486 32,507 33,290 24,890 101,173 24,030

Interest expense (27,552) (8,231) (8,121) (7,668) (6,111) (30,131) (6,088) (6,495) (6,377) (6,076) (25,036) (5,982)

Loss on debt

extinguishment- - - (12,529) - (12,529) - - - - - -

Other income (expense),

net784 1,455 1,411 735 469 4,070 319 964 1,083 3,324 5,690 1,950

(Loss) income before

income taxes(14,520) (10,696) 26,873 14,218 14,751 45,146 4,717 26,976 27,996 22,138 81,827 19,998

Income tax (benefit)

expense(9,689) (3,940) 8,891 4,982 4,333 14,266 973 9,380 9,553 4,496 24,402 4,639

Net (loss) income (4,831) (6,756) 17,982 9,236 10,418 30,880 3,744 17,596 18,443 17,642 57,425 15,35927

BMC STOCK HOLDINGS RECONCILIATION OF NON-GAAP ITEMSADJUSTED NET SALES

($ths) FY 2013 FY 2014 FY 2015 Q1 16 Q2 16 Q3 16 Q4 16 FY 2016 Q1 17 Q2 17 Q3 17 Q4 17 FY 2017 Q1 18

Net sales 1,210,156 1,311,498 1,576,746 727,418 797,547 821,204 747,574 3,093,743 757,700 886,375 881,012 840,881 3,365,968 834,202

Pre-merger SBS net

sales1,197,037 1,295,716 1,223,875 - - - - - - - - - - -

Adjusted net sales 2,407,193 2,607,214 2,800,621 727,418 797,547 821,204 747,574 3,093,743 757,700 886,375 881,012 840,881 3,365,968 834,202

Structural components 420,337 108,890 121,187 123,539 108,145 461,761 109,891 138,306 145,185 129,237 522,619 135,829

Lumber & sheet goods 864,868 213,532 244,830 248,751 231,450 938,563 244,436 290,499 294,699 284,585 1,114,219 288,086

Millwork, doors &

windows794,643 217,987 228,423 232,292 216,187 894,889 210,751 240,999 225,804 229,823 907,377 229,518

Other building prods &

svcs720,773 187,009 203,107 216,622 191,792 798,530 192,622 216,571 215,324 197,236 821,753 180,769

Adjusted net sales by

product category2,800,621 727,418 797,547 821,204 747,574 3,093,743 757,700 886,375 881,012 840,881 3,365,968 834,202

Gross profit 256,547 295,074 361,410 741,965 795,515

Pre-merger SBS gross

profit274,403 307,654 298,393 - -

Inventory step-up charges - - 10,285 2,884 -

Adjusted gross profit 530,950 602,728 670,088 744,849 795,515

Adjusted gross margin

%22.1% 23.1% 23.9% 24.1% 23.6%

28

BMC STOCK HOLDINGS RECONCILIATION OF NON-GAAP ITEMSADJUSTED EBITDA

($ths) FY 2013 FY 2014 FY 2015 Q1 16 Q2 16 Q3 16 Q4 16 FY 2016 Q1 17 Q2 17 Q3 17 Q4 17 FY 2017 Q1 18

Net income (loss) 21,655 94,032 (4,831) (6,756) 17,982 9,236 10,418 30,880 3,744 17,596 18,443 17,642 57,425 15,359

Pre-merger SBS (loss)

income from continuing

operations

(5,036) 10,087 6,842 - - - - - - - - - - -

Interest expense 22,579 29,774 30,189 8,231 8,121 7,668 6,111 30,131 6,088 6,495 6,377 6,076 25,036 5,982

Income tax expense

(benefit)9,147 (59,237) (9,974) (3,940) 8,891 4,982 4,333 14,266 973 9,380 9,553 4,496 24,402 4,639

Depreciation and

amortization25,827 28,799 39,251 16,682 17,139 17,276 17,583 68,680 16,813 17,558 17,625 17,221 69,217 15,681

Merger and integration

costs- - 37,998 2,836 3,597 4,655 4,252 15,340 4,441 6,324 2,574 1,997 15,336 1,687

Restructuring expense 141 73 383 - - - - - - - - - - -

Inventory step-up

charges- - 10,285 2,884 - - - 2,884 - - - - - -

Non-cash stock

compensation expense3,474 6,079 5,452 1,889 1,804 1,851 1,708 7,252 1,231 2,154 1,366 2,018 6,769 1,775

Loss on debt

extinguishment- - - - - 12,529 - 12,529 - - - - - -

Headquarters

relocation- 2,054 3,865 - - - - - - - - - - -

Insurance deductible

reserve adj. and fire

casualty loss

1,772 669 3,026 - - - - - - - - - - -

Loss on portfolio

transfer- - 2,826 - - - - - - - - - - -

Acquisition costs and

other items12,995 1,828 4,216 - - - - - 273 44 2,950 (1,884) 1,383 2,057

Impairment of assets - - - 11,883 - - 45 11,928 - 26 409 - 435 -

Adjusted EBITDA 92,554 114,158 129,528 33,709 57,534 58,197 44,450 193,890 33,563 59,577 59,297 47,566 200,003 47,180

Adjusted EBITDA

margin3.8% 4.4% 4.6% 4.6% 7.2% 7.1% 5.9% 6.3% 4.4% 6.7% 6.7% 5.7% 5.9% 5.7%

29

BMC STOCK HOLDINGS RECONCILIATION OF NON-GAAP ITEMS ADJUSTED NET INCOME AND ADJUSTED EARNINGS PER SHARE

(in $ths, except per share amounts) Q1 2018 Q1 2017

Net income 15,359 3,744

Merger and integration costs 1,687 4,441

Non-cash stock compensation expense 1,775 1,231

Acquisition Costs (a) 234 273

Other Items (b) 1,823 -

Tax effect of adjustments to net income (c) (1,304) (2,039)

Adjusted net income 19,574 7,650

Diluted weighted avg. shares used to calculate Adjusted net income per diluted share 67,664 67,186

Adjusted net income per diluted share $0.29 $0.11

30

(a) For the three months ended March 31, 2018, represents costs incurred related to the acquisition of W.E. Shone Co. For the three months ended March

31, 2017, represents costs incurred related to the acquisitions of Code Plus Components, LLC and Texas Plywood and Lumber Company, Inc.

(b) Represents severance and executive search costs incurred in connection with the departure of the Company’s former chief executive officer and the

search for his permanent replacement.

(c) The tax effect of adjustments to net income was based on the respective transactions’ income tax rate, which was 23.6% and 37.3% for the three months

ended March 31, 2018 and 2017, respectively. The tax effect of adjustments to net income exclude non-deductible Merger and integration costs of $0.5

million for the three months ended March 31, 2017.