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How to insulate a steel beam

Phobos| Posted inGreen Building Techniqueson

I am self building towards a passiv house standard. I have a 6m triple glazed patio door and a steel beam over (likely to be an rsj). How would you insulate the beam either side so that I avoid condensation inside. The walls are 350mm block work cavity with 100mm insulation, plaster on the inside and rendered on the outside.

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  1. Expert Member
    Michael Maines||#1

    Phobos, it's best to have the steel entirely on the interior of the thermal layer, or as close as possible. Is your wall insulation on the interior or exterior?

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