Inverted Roof Membrane Assembly (IRMA)
A protected membrane roof system where the waterproofing is placed beneath insulation and ballast. ‘IRMA’ and ‘Styrofoam’ are trademarks of Dow Chemical.
A protected membrane roof system where the waterproofing is placed beneath insulation and ballast. ‘IRMA’ and ‘Styrofoam’ are trademarks of Dow Chemical.
