How to insulate an existing metal building roof with success
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Rigid foam boards come in different material compositions, varying thicknesses and different insulating. A benefit of this insulation is that it will fill the corner of the building better and reduces the potential for leakage. The other option is to spray the back of the roofing with closed cell polyurethane foam.
Measure the area of the walls and ceiling.
It would probably be easier to insulate from the inside and add false architectural elements if you have the headroom of course. Take your foam board panels and place them on the inside of the sheathing. Below are some tips that will help you achieve your desired metal roof insulation, and materials you need include foam board, paper wrap, staples, and panels. When installing a metal roof over an existing roof, insulate the spaces between the wood strips with rigid insulation to prevent condensation before installing the roofing.
