jonnykerry
Registered User
- Messages
- 39
- insulated raft. 200 mm cavity (150 mm internal/ 100 mm external block ground floor & brick exterior and 100 mm block for upper floors)
- upper exterior being brick.. 140 mm areobord full fill insulation
- set to the outer part of the cavity
- with 50 mm of foam (Basf Walltite) injected to the remainder part of the cavity.
- Provisionally it gives a "real world" u-value of 0.138,
- an airtight seal on inner wall from foam and at the wall plate the whole cavity (down 400/500 mm) will be
- foam to provide stability to the cavity.
- MHRV primarily for air quality and secondly
- to remove moisture due to the fact the foam is none breathable as far as I understand.
ok go with a wide cavity and pump it with grey beadHi Low C02,
Thanks for the informed reply.
Had a look at the Thin-R-CT-PIR, grand insulation but just have serious reservation's about it's full life insulation values when it is going to be constantly getting wet due to brick work weeping due to being on the west coast!
ok, suit yourself, so why ask the following :So I know it's not as good inch for inch but I think the aerobord is the best long term bet.
EPS is 0.034wmk approx with PIR/PUR in the region of 0.023wmk thats it! take it or leave itYou don't know of a full fill aerobord type insulation that would give a better u-value.
it is not a good product for installing in a cavity. and you haven't shown me where in its certification it does any of things you stated in the OPIn regard to the foam I talked about it is Basf walltite and "sitting on the fence" it looks to be a good product but it is closed cell,
rubbish (sorry but there's no other word for it)thus why I stated the MHRV would be vital as my understanding is that it will prevent moisture moving from the inside of the inner block work to the cavity, so the MHRV will play a important duel role= fresh air and prevent damp on inner wall's.
(when you are building a new structure) you need to study up on thermal bridging & interstitial condensationprevent moisture moving from the inside of the inner block work to the cavity, so the MHRV will play a important duel role= fresh air and prevent damp on inner wall's.
bare in mind I ain't a "house basher" dreamer or clown, just because I ain't preaching on this form like other's doesn't mean I don't know what I'm talking about. I'm an Engineer and time served trades man
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?