Airtightness

[Sparrowhawk]

10 hours ago, PNAmble said:

Wow.  Purple paint isn’t like by this forum.  Sorry I mentioned it. House finished time to leave the forum. 

That's... quite an overreaction.

 

Airtightness paint is useful. It's available from at least 3 manufacturers. Pick the one you want, everyone has their opinion.

[Nick Laslett]

11 hours ago, PNAmble said:

Wow.  Purple paint isn’t like by this forum.  Sorry I mentioned it. House finished time to leave the forum. 

Don’t let them intimidate you. Worst feature of all forums is loud voices crowding out debate. There is no one way to do most things. Best thing you mentioned was the builder had a contractual obligation to hit a certain ACH. 
 

Anyway congratulations on finishing your own build. I’m sure you are benefiting from excellent airtightness, and the freedom to fix anywhere on the walls without having to worry about puncturing a membrane or the screws getting loose over time. 
 

*Edit: What did I use for my airtightness strategy; ICF walls, Siga Wigluv & Fentrim tapes, Illbruck FM330 expanding foam (love that stuff), Triton TT gas and water liquid membrane around windows, ProClima Intello Plus for dormer cheeks, ProClima & Siga pipe sealing grommets, one for outside tape, the other for water softener pipe. Actually getting very close to air testing on my build, will be pretty disappointed if I don’t hit 0.6 ACH as the materials cost a fortune and the time spent was excessive. 

Edited November 10 by Nick Laslett

[Nic]

2 hours ago, Nick Laslett said:

Don’t let them intimidate you. Worst feature of all forums is loud voices crowding out debate. There is no one way to do most things. Best thing you mentioned was the builder had a contractual obligation to hit a certain ACH. 
 

Anyway congratulations on finishing your own build. I’m sure you are benefiting from excellent airtightness, and the freedom to fix anywhere on the walls without having to worry about puncturing a membrane or the screws getting loose over time. 
 

*Edit: What did I use for my airtightness strategy; ICF walls, Siga Wigluv & Fentrim tapes, Illbruck FM330 expanding foam (love that stuff), Triton TT gas and water liquid membrane around windows, ProClima Intello Plus for dormer cheeks, ProClima & Siga pipe sealing grommets, one for outside tape, the other for water softener pipe. Actually getting very close to air testing on my build, will be pretty disappointed if I don’t hit 0.6 ACH as the materials cost a fortune and the time spent was excessive. 

Let us know what you get in the test 👍🏼

[Iceverge]

3 hours ago, Nick Laslett said:

Don’t let them intimidate you. Worst feature of all forums is loud voices crowding out debate. There is no one way to do most things. Best thing you mentioned was the builder had a contractual obligation to hit a certain ACH. 
 

Anyway congratulations on finishing your own build. I’m sure you are benefiting from excellent airtightness, and the freedom to fix anywhere on the walls without having to worry about puncturing a membrane or the screws getting loose over time. 
 

*Edit: What did I use for my airtightness strategy; ICF walls, Siga Wigluv & Fentrim tapes, Illbruck FM330 expanding foam (love that stuff), Triton TT gas and water liquid membrane around windows, ProClima Intello Plus for dormer cheeks, ProClima & Siga pipe sealing grommets, one for outside tape, the other for water softener pipe. Actually getting very close to air testing on my build, will be pretty disappointed if I don’t hit 0.6 ACH as the materials cost a fortune and the time spent was excessive. 

 

Make a DIY airtighess fan. You can troubleshoot at your leisure then as doing it on the day with the man with the fan won't give you enough time.

 

I found loads of pinhole leaks on ours that were quickly solved with a dab of sealant. 

 

 

[Gone West]

7 hours ago, Nick Laslett said:

What did I use for my airtightness strategy;

Timber I-beam portal frame using 15mm OSB3, 350mm Icynene with plasterboard and skim. No tapes or membranes at all. Airtightness was 0.47ACH.