I always have a roll of tape for the standard (usual)  penetrations and do my own but I write on my quote that all penetrations that require specialised sealants are the responsibilility of the builder to arrange with the applicaticator eg roofer etc. I am not and cannot be expected to be a specialist in every type of fancy coating, nor will I carry 2000 types of sealant in 400 colours each. Perhaps someone can give us the low down on the legalities

it would depend on the licensed building practitioner strand wouldn't it?

ie as a plumber we gain cladding strands in profiled metal as well as brick/block?

we would be responsible for the penetration in the vapour barriers - would make sense wouldnt it? we make penetrations in timber studs we seal them dont we albeit for different reasons?

I'm not sure if hebel would be included as brick/block as it is in my opinion a specialized product? Not sure about that though as I have seen everyman and his dog have a crack at it - our builders install it in my neck of the woods...

yeah I dont know - I hear what ya sayin, we wouldnt want the builders to get too carried away with it though aye?

when you say waterproof slab penetrations are talking about sealing the penetration through the poly? - if so I say no way thats up to whoever installs said poly

my general rule of thumb has been if my pipes are poking through wall prior to cladding then whoever clads seals - but if my pipe goes in after something has been clad then yeah I would make an effort to seal my penetration - then of course if pipe goes in after everything - ie renovation or such then how are you supposed to seal vapour barrier anyway? surely no one expects a plumber to open a hole up to gain access to cavity to tape it up?!?



interesting topic, alot of times on commercial jobs it is spec'd who seals penetrations etc



probably a case of rules/regs/legislation saying/inferring one thing but in reality the practicalities and logistics of it all would make it extremely inefficient and productivity would surely fall?!?

seems to be the trend these days though where the government are always blowing on about NZ's need to be more productive but then introducing rules/regs/legislation that completely inhibit that!!!

True, cost and time is a big factor, do I now have to add "waterproofing not included" in my quotes just to be on the safe side? In regards to the penetrations, we did an under-slab and the 100mm sewer pipe comes out the side of the building envelope through the concrete block (Hebel goes on top of that), I assume water proofing is only required to the outside. I'm a bit puzzled about this not sure whether the board of even council can answer this question.

On large commercial builds the responsibility lies with the main contractor - but it is a murky area I think with domestic - to be on the safe side I would tag out.  I have a nagging feeling there might be something in the deeming sections around LPB's and plumbers - I might have to look at the documentation I have on Monday - there is stuff about penetrations and flashings... just can't recall exactly what it was...

just looke up E2 fig 68 (b) gives the details I require , as long as the pipe has a slope to the outside and solid blocked we dont need to tape the pipe as he has requested , this detail was amended August 2011 I hope it is current ,