Revised Part L published

clarification I received from SEI . no answer from DOE yet as to when revised
TGD L 2008 will issue

“The HARP database is a resource for new and existing dwellings therefore it will continue to display all products regardless of seasonal efficiency.

The HARP website will be updated to include information on the new Part L requirement in the next week.

The DEAP methodology is currently being reviewed to include amendments made in the Building Regulations Part L 2007, and it will be published as soon as possible after TGD L 2008 is published.”

glad to hear new regs will be introduced so swiftly, no point beating around the bush wit a topic like this.

On another point with regard guidelines etc. does anyone have a copy of know where to get a copy of the DoEHLG guidelines for sight lines in rural areas? ie for an 80 km road what is the required clear visibility left and right when exiting the site. I have tried my local county council, dept of DoE; transport etc even an Bord Pleanála.
Was onto Bord Pleanála yesterday as many of their refusals are based on the site not satisfying the ‘DoEHLG guidelines for visibility / sightlines’ yet they do not seem to have a copy!

any help would be greatly appreciated as i’m currently looking at a site and would prefer to have all my bases covered before investing further time and money in it.

regards,

macm

cheers henno

macm

The DEAP calculations need to be done, probably, prior to commencement….. the BER is done after completion, which would be too late to calculate compliance with regs.
I think the simplest way for certifiers to enact this is to either (a) do a course in DEAP or (b) engage a BER assessor to do a prelim BER assessment after the construction method is selected.

The days of just looking into a cavity and checking off insulation is gone…. thank god!

But i was under the impression that, under these new regs about to come in in July, that a dwelling cannot be certified to comply with Part L unless a DEAP calculation is done on it???
Thats what it states in the new SI……… maybe im picking it up completely wrong….

I agree totally with what you are posting, and i know ive had this argument on another forum, but the compliance with Part L, as calculated using DEAP, is completely separate to the BER certificate calculations, even though the same software is used.

Any certifier that certifies without using DEAP will be incorrect. How will they prove a 40% efficient in CO2 emissions without using DEAP?? Also that 25% glazing reg is flexible when other elemental u values are taken into account.

Two sets of regs

Reg 1
SI 666 2006 is the Irish response to EPBD . It requires BER certs – prepared using DEAP
Effective dates are

At point of sale or letting ….

for new dwellings effective date 01 01 07 ( BUT transitional – PP on or by 31 12 06 – substantial completion 30 06 08 – exempt ) . I think this is the date you are thinking of ?

for new buildings not dwellings 01 07 08 ( ( BUT transitional – PP on or by 30 06 08 – substantial completion 30 06 10 – exempt )

for all existing buildings – 01 01 09 THIS is when assessors will become VERY busy ( IF SEI get there act together and agree methodology and issue software in time )

Reg 2

SI 854 2007 is the new Part L ( TGD still awaited )
effective date 01 07 08 ( transitional – PP on or by 30 06 08 – substantial completion 30 06 09 – exempt )
Revised DEAP will be required to calculate energy requirements / CO2 emmisions – ( to rates to be set out in TGD L 2008 when it issues )

@wearnicehats wrote:

I’m completely confused – I thought these new regs were only to do with boiler efficiency.

NO – revised Part L ( Thermal Insulation Building Regulations) – for dwellings

Boilers is only tiny part of it – kicking in first

Is it just me or is anyone else not surprised that apart from henno the only inputs have taken the thread off topic ?

@keating wrote:

Part L Regulations can be satisfied by showing that the calculated CO2 emissions per annum (kg CO2 /m2/per annum) for an actual dwelling, as designed and constructed, are less than the calculated annual emissions for a similar reference dwelling.

Any building sent for planning after 1 July 2006 need to demonstrate CDER complies with the max permitted figures. CDER + MCDER are calculated by DEAP.

Yes, and the new revised upcoming regulations must show at least 40% efficiency greater than the MPCDER.

I would be interested to know exactly what percentage of dwellings certified under current part L were calculated using the DEAP software. I would think it would be a tiny percentage.

@sinnerboy wrote:

When are the DEAP calcs needed and for whom? Sorry , rhetorical question . Hundreds of codes of practices and calcucations methods are referenced in TGD’s . It is not the routine practice for them to be required at planning . ( Soil tests and calcs for drainage excepted ) Or even at commencement notice time . What do you honestly expect the local building control to be able to with DEAP calcs print outs ? Even if they are looked for .

Designers OUGHT to be using DEAP ( same as any other pertinent design codes ) . But with self certification / no meaningful ( I mean compared to UK for example ) building control regime I think in practice designers will find they wont HAVE to .

I reckon the only time DEAP calcs will be required ( I mean in a quasi enforcement sense ) will be at BER time – sale or letting

What I reckon is that nobody knows anything about this topic so perhaps we should stop speculating until the new regs appear