Questions tagged [air-sealing]

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Air-sealing basement slab weeping tile access for radon

I have a pretty high levels of radon in the basement (~400 Bq/m3 when windows are not open), so I want to seal obvious entry points, one of which is what looks like a 10 inch weeping tile cleanout ...
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44 views

How are attached buildings air sealed together?

I am a condo owner in a building that is structurally independent but abuts directly against another building. As a result the 2 buildings move somewhat as they settle or have changes in temperature. ...
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29 views

Is it ok to boost finished attic kneewall insulation with rigid foam board over the batts?

Have a finished attic with fiberglass batts (poorly) installed between the kneewall studs--the batts are faced and the facing is on the inside. I want to put an airtight, taped layer of rigid ...
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1answer
70 views

How can I find all the air leaks and insulation gaps in my finished attic?

I have a finished attic which gets hot very quickly, requiring running the central AC excessively and due to the imbalance, the downstairs tends to get too cold while the finished attic is still too ...
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0answers
66 views

Sealing sheathing to an ICF foundation

I am in energy Zone 4 and have a stick frame home on an EPS ICF foundation built in 2007. The rim board is currently just insulated with batting and it is a little drafty and I a little worried that ...
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2answers
196 views

How to patch hole in furnace pipes?

I recently bought a house and the heating bill has been unusually high. I discovered there is a big hole leading to the outside that the previous owner hid, but isn't sealed properly. Their patch was ...
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2answers
184 views

How to air-seal apartment breaker box and range hood duct

I live in an apartment on the top floor. It's the dream apartment for me except for the heavy cooking smell from neighbors entering the unit. I believe the main culprit is the bathroom fan without ...
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2answers
237 views

Adding house wrap behind existing board and batten siding

I live in south-central Illinois, and the house is on top of a hill, so we get a lot of wind. The house is cold in the winter - partly because it is on slab and partly because it is pretty drafty. ...
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2answers
171 views

Is it possible to seal an interior barn door to provide an acceptable level of insulation between a conditioned and an unconditioned space?

I'm finishing a storage room in my house. General layout, room is 12' x 12', door on one wall, window on opposite wall, roof peak ~12' above the axis between the door and the window. Roof slopes ...
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3answers
3k views

Should I caulk the top and bottom of my windows on the outside?

Lots of ladybugs in the house today, and I read that they're getting in through the windows, so I went to inspect. One window in particular has a large gap at the bottom. All of the windows on my ...