Spray foam insulation for the attic - thoughts?

NIMAN

Hopefully the correct section.

Anyone ever get the attic sprayed with foam insulation?
If so, where you happy with the job, and did you notice an improvement in heat retention?

Seen this firm online, and they are local to me. Something I might consider in the future if the price was right.
www.bioinsulate.com

freddyuk

Unless you plan to live in the attic the attic should not be airtight but anything below it should within reason. So insulate the attic floor and all lighting fittings and pipes or conduits from the attic into the house. Insulate the pipework and storage tanks if any so you are not heating the attic via your pipes. This will keep your house better insulated and cost pennies to do with a tube of suitable mastic sealer and cheap insulation. Insulating the roof just keeps any warm air already escaped from the house inside the attic where it can condense and cause really serious problems. Also if you need any roof work done your roofer will not thank you for sticking everything together with spray foam. Now if they say they will leave the breather vents clear for airflow (which I think is a building regulation) then what is the point at all?? Any draughts (which need to be across your attic) will cool the attic down.

This is just my opinion and others are more qualified.
So check with a qualified heating engineer before you part with any cash.

NIMAN

tbh I had thought about how the attic is meant to have a decent airflow in it, but they say this stuff is breathable so surely its doesn't block air?

bbam

NIMAN wrote: »

tbh I had thought about how the attic is meant to have a decent airflow in it, but they say this stuff is breathable so surely its doesn't block air?

Does it have a certificate to be used here in Ireland ?

freddyuk

My argument stands - spend a few dollars insulating the house properly and then no need to worry about the attic? I mean where is the heat coming from?

It will cost a fair few pennies and what is that in savings on your heating bill?

gjc

had it done 1 year ago....huge difference in the house....upstairs never needs heating our contracter gave us a copy of NSAI certificate. Also noticed that house remained warm even when doors open, whereas before insulation house rapidly became cold. believe I've benefited even if others knock it.

freddyuk

Agrément certification is designed specifically for new building products and processes that do not yet have a long history of use and for which published national standards do not yet exist. As the Irish national delegate at UEATc (The European Union of Agrément Institutes for construction), the IAB contributes to the development of Agrément product assessment.