ᐅ Create an insulated utility room for the gas boiler in the attic.

Created on: 28 Sep 2019 05:57

Hello everyone.
A new neighbor in our development is installing their gas boiler and hot water tank in the uninsulated attic.
In other words, they have a cold roof, just like us.
They said they will build an insulated “box” around the equipment.

Is that possible? If so, it could be an idea for us as well! What should the wall construction of this box be like to ensure effective insulation?

Has anyone here had any experience with this?

Golfi903 Oct 2019 20:51

#43

Tina mit K schrieb:

Nope. Not that I know of.

Well, of course that’s mandatory!

Tina mit K3 Oct 2019 20:57

#44

Golfi90 schrieb:

Well, that is of course mandatory!

Yes, the owner really let a lot slide here. But it was never intended as a rental property, only for personal use, and you can tell. I'll only be here until the end of the year, and hopefully then it will be moving into the house.

Golfi903 Oct 2019 21:18

#45

Nordlys schrieb:

This is a worst-case scenario, and having the boiler in the ground floor utility room is definitely better.
Regarding the membrane: apply a generous continuous bead of this membrane adhesive onto the boards. The bead should be seamless. That way, it will be airtight enough.

But if I just stick the membrane onto the tongue-and-groove boards, air could still get behind the membrane... So it wouldn’t be completely airtight then...

Nordlys3 Oct 2019 21:42

#46

From where? Probably not from the inside. From the outside, air always reaches the insulation. We seal between the warmer and colder areas.

Golfi905 Oct 2019 21:19

#47

Don’t you think that air or moisture could pass through the tongue-and-groove boards and then get into the insulation?

Joedreck5 Oct 2019 21:35

#48

Basically, yes. However, if a climate membrane is really used together with the vapor-permeable underlayment, it is rather uncritical.

Nevertheless, I would still stick it to the masonry, or apply it in a way that no cold air can flow behind it. (with or without h?)

But seriously... It’s just an attic with heating... The only important thing is to prevent any mold growth.

ᐅ Create an insulated utility room for the gas boiler in the attic.

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