upskilling for site workers external wall insulation, …...joseph little, assistant head of school,...

Joseph Little, Assistant Head of School, Dublin

School of Architecture

Upskilling for site workers

External Wall Insulation, Air Tightness Testing, IT for Site Workers

TGD 2008 (2005 + 40%)

TGD 2011 (2005 + 20%)

TGD 2015 (2005 + 70%)

TGD 2005

TGD 1997 & 2002

(The Boom Regs)

The “low hanging fruit” were

picked a long time ago.

Since 2008 achieving minimum

compliance requires education for

all and great care…

Trying to pluck fruits of minimum compliance under Part L

ha

rde

r & h

ard

er

EPC – improving on specs of the reference dwelling

Section C.1, TGD L(2011): ‘Table C1 in TGD L(2011) is used to define a notional reference

dwelling of the same size, i.e. same floor area and volume, and with the same area of

opaque fabric elements, i.e. wall, roof and floor, as a dwelling being assessed’

We suggest that a good start to ensure overall compliance is to make sure whenever

possible that each element is at least 60% better than the spec. used in Table C1. In that way

some of the ‘heavy lifting’ is shared.

Table C1 value Common spec 60% better than Table

C1

Orientation East-West ? (South for EPC uplift)

Glazing ratio 25% of floor area or

exposed roof + wall

? 15% (not practical,

bigger jump required)

Cyl. insulation.: 35 mm 50 mm 65 mm

Boiler efficiency (min.) 78% 90% (required) 86.8%

Y-value: 0.11 W/m2K 0.08 0.066

Pitched roof 0.16 W/m2K ? 0.064

0.160

W/m

2K

0.064

- 60 %

This jump isn’t economic

or perhaps even

possible, other energy

savings need to be found

Stamford Brook in the UK is an

estate of about 700 dwellings

designed in 2002 and finished

in 2007.

The performance gap at

Stamford Brook was

equivalent to dropping two

standards, so did another

timber frame project studied

What happens when we measure how we actually build?

It was designed to a standard

~15% above the UK Part

L(2006)

A building culture that does not like to measure, record or discuss failures

New programmes

• CPD Certificate in Air Tightness Testing

• CPD Certificate in External Wall Insulation

• CPD Certificate in IT for Site Workers

CPD Certificate in in Air Tightness Testing

CPD Certificate in in Air Tightness Testing

Thermographic image of an attic room… no wind… wind

Images care of

Ecological Building

Systems

CPD Certificate in in Air Tightness Testing

CPD Certificate in in Air Tightness Testing

New programmes

• CPD Certificate in Air Tightness Testing

• CPD Certificate in External Wall Insulation

• CPD Certificate in IT for Site Workers

In terms of external wall insulation, it’s not enough to care about energy

efficiency and controlling costs, we have to care about the quality of built

heritage and preserving the best parts of the physical character of communities

Externally insulating - without losing character

The EU has reflected this focus with the SUSREF, REFURBAN, 3Encult programmes

CPD Certificate in External wall Insulation

Externally insulating - without losing characterCPD Certificate in External wall Insulation

Finding balance between

energy & building conservation

CPD Certificate in External wall Insulation

There are few rendered details that a good contractor

using the right systems can’t faithfully replicate

Donnycarney

Vernon Avenue, Clontarf

CPD Certificate in External wall Insulation

New programmes

• CPD Certificate in Air Tightness Testing

• CPD Certificate in External Wall Insulation

• CPD Certificate in IT for Site Workers

CPD Certificate in IT for Site Workers

CPD Certificate in IT for Site Workers

CPD Certificate in IT for Site Workers

CPD Certificate in IT for Site Workers

Joseph Little, Assistant Head of School, Dublin

School of Architecture

eM: joseph.little@dit.ie

Tel: 01-402 3692

Upskilling for site workers

External Wall Insulation, Air Tightness Testing, IT for Site Workers