Natural Gas And Foam Roof Insulation

Murmurs and hearsay about open cell spray foam insulation have been gaining traction for a while.

Natural gas and foam roof insulation.

Spray polyurethane foam insulation can achieve air tightness of 0 10 to 0 20 air changes per hour. It should not be confused with the old uf foam insulation. Flat roofs are only practical to re insulate when replacing the roof. There are urethane foam products designed to spray directly on top of existing flat roof surfaces and then have a gravel ballast or membrane seal applied over the foam.

Air tight homes require sealed combustion hvac appliances and mechanical ventilation. Not long ago someone even told me that in florida roofing companies won t let their workers go up on roofs with open cell spray foam because the roofs are so spongy the guys fall right through. Liquid natural gas insulation lng insulation polyisocyanurate insulation mechanical insulation iso c1 lng pipe insulation and equipment insulation dyplast s iso c1 polyisocyanurate mechanical insulation is the optimal insulation for the vast majority of cold temperature systems within an lng facility. There are several new types of spray in place foam insulation.

The good news is that some installers understand this problem and seek to address. It rots roofs people have told me. Most often the attic is sealed by installing spray foam insulation at the roofline thus bringing the attic inside the building enclosure and turning it into conditioned space directly or indirectly. Rigid board insulation is made to be used in confined spaces such as exterior walls basements foundation and stem walls concrete slabs and cathedral ceilings.

Especially for roofs and attics. One a new type of spray in foam is calledicynene foam. Sealed combustion appliances fueled with natural gas cost less to operate than electric ones. A while back i wrote about the incompatibility of putting an atmospheric combustion furnace in a sealed attic.