Quick one hopefully. In a garage above the upvc door and above the garage door (2m wide steel swing door) there are steel beams on the inner brickwall. These beams both have small holes and bits of polystyrene inside but both are very cold to the touch. I want to insulate these steel beams but need to preserve airflow to prevent condensation buildup. Maybe gluing a layer of breathable roofing membrane to the beam before using expanding foam/kingspan block insulation?
Steel beam insulation
- Thread starter TryAgain1
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Warm moisture air meets cold surface you get condensation.
Inside a painters van with wet sponges and paint creates moisture that forms on cold van roof.
Look how they insulate a camping van roof by sticking foam sheets.
Do the same.
Anyway.
The insulation feels warm as if reflects heat back to skin. It's not actually warmer.
Are your heating garage?
Inside a painters van with wet sponges and paint creates moisture that forms on cold van roof.
Look how they insulate a camping van roof by sticking foam sheets.
Do the same.
Anyway.
The insulation feels warm as if reflects heat back to skin. It's not actually warmer.
Are your heating garage?
Sounds like a proprietary steel lintel, not a beam.
You could probably fill the void with some expanding foam. However, air is an insulator, and there may already be cavity insulation installed.
Alternatively or in addition, if possible, fit foil- backed insulation board to the recess or face before any plasterboard.
No need to mess about with any membrane, or try to deal with any non existent air flow issues.
You could probably fill the void with some expanding foam. However, air is an insulator, and there may already be cavity insulation installed.
Alternatively or in addition, if possible, fit foil- backed insulation board to the recess or face before any plasterboard.
No need to mess about with any membrane, or try to deal with any non existent air flow issues.
Attached is a pic of the black painted and holed I beam, it does have small holes in. It is positioned on the inner brick wall and is 2.4m high. I can see inside the steel beam and there is a bit of polystyrene insulation but it's still cold in winter. The face of the steel beam in the cavity gap should get airflow from within the cavity.
Can I fill the void with expanding foam and then fit block (not foil backed as I fear the foil will condense cold air and rust the beam) insulation onto the beam from inside the garage?
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