How to insulate this door?
Discussion
This is a small unheated room in our house
It’s fully insulated except the large wooden doors.
We rarely open them - only for access very rarely
We are converting the room into a utility with all the plumbing and installing a radiator as a drying space.
Need to insulate these large doors
Would ideally retain the ability to open them
Was thinking mounting celotex board, putting 3mm ply or hardboard over the top and painting so it doesn’t look too awful & retain cut outs so I can access the locks, then hanging a heavy curtain in front or something but just a guess really I’m no builder
anyone able to advise? Thank you
It’s fully insulated except the large wooden doors.
We rarely open them - only for access very rarely
We are converting the room into a utility with all the plumbing and installing a radiator as a drying space.
Need to insulate these large doors
Would ideally retain the ability to open them
Was thinking mounting celotex board, putting 3mm ply or hardboard over the top and painting so it doesn’t look too awful & retain cut outs so I can access the locks, then hanging a heavy curtain in front or something but just a guess really I’m no builder
anyone able to advise? Thank you
As above, airtight is important.
You want the doors pretty air tight and the gap breathing a little to the outdoors if possible.
The insulation could be simply a layer of air trapped by thin ply or hardboard or whatever, or you can add as much foam or rockwool as you care to.
No point going mad once you've got the the point where other heat paths are the vast majority of the room's loss.
You don't want airflow bypassing the insulation.
A simple curtain can work if it stops airflow top, bottom and sides, but it will let water vapour through, potentially giving condensation on the door.
I'd start by doing the maths for an inch of kingspan, as that would be cheap ish and easy to frame around on the doors.
You want the doors pretty air tight and the gap breathing a little to the outdoors if possible.
The insulation could be simply a layer of air trapped by thin ply or hardboard or whatever, or you can add as much foam or rockwool as you care to.
No point going mad once you've got the the point where other heat paths are the vast majority of the room's loss.
You don't want airflow bypassing the insulation.
A simple curtain can work if it stops airflow top, bottom and sides, but it will let water vapour through, potentially giving condensation on the door.
I'd start by doing the maths for an inch of kingspan, as that would be cheap ish and easy to frame around on the doors.
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