eandg Posted January 25, 2021 Share Posted January 25, 2021 How have you detailed/insulated (or avoided having to) piercing the envelope of the kit - for ASHP, MVHR, outside lighting etc? Link to comment Share on other sites More sharing options...
SuperJohnG Posted January 30, 2021 Share Posted January 30, 2021 On 25/01/2021 at 01:24, eandg said: How have you detailed/insulated (or avoided having to) piercing the envelope of the kit - for ASHP, MVHR, outside lighting etc? Good question @eandg following this with interest. I think it'll be around a mix of tapes and compriband type solutions. I have the ASHP and MVHR to punch through the wall along with a WBS direct air feed. For all the electrics and cables I have a load of ducts coming out through the insulated foundation. Link to comment Share on other sites More sharing options...
Iceverge Posted January 30, 2021 Share Posted January 30, 2021 On 25/01/2021 at 01:24, eandg said: How have you detailed/insulated (or avoided having to) piercing the envelope of the kit - for ASHP, MVHR, outside lighting etc? Avoid making any holes if at all possible. Service cavities in all external walls and ceilings. Duct in services through the slab and backfill with fine sand around cables pipes etc. MVHR ducts were solid ducts and taped/ airtight painted to the walls inside and out. For the cables to the attic I drilled holes for each wire in a piece of ply and placed sealant around each hole. Link to comment Share on other sites More sharing options...
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