Can anyone tell me the Compressive Strength of Rigid Insulation as I want to put a load onto a roof with rigid insulation on it, there is no issues with the roof structure itself. I am concerned about water pooling around the load if the insulation is compressed and subsequent rupture of the outer membrane.
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Compressive strength of rigid insulation
- Thread starter PhoenixP
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DaveAtkins
Structural
I just completed a project using Geofoam, under a mat footing, and we had to limit the bearing stress to around 500 psf, in order to limit the compressive strain in the Geofoam to 0.5 percent. I think Geofoam is similar to rigid roof insulation.
DaveAtkins
DaveAtkins
This link gives some ranges for various insulation board material.
For low density boards, you may consider using cover boards to spread the impact loads.
Ponding loads, if you calculate to psi unit, will be very low.
For low density boards, you may consider using cover boards to spread the impact loads.
Ponding loads, if you calculate to psi unit, will be very low.
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