The fundamental scale of the performance of any kind of insulation is its R-value. Insulation is made to stop the circulation of warmth. The more heat the insulation stops, the higher the R-value of that insulation.
When compared to fibreglass batt insulation, spray foam insulation has a higher R-value at a given thickness. In shorts, 2 inches of spray foam will insulate your roofing system far better then 2 inches of fibreglass batts.
Cellulose fill, either blown-in or used manually, also has a higher R-value compared to fibreglass batts at the exact same density. However, once again, the R-value of spray foam insulation is practically twice as high as cellulose fill insulation of the exact same thickness.
As vital as R-value is in just how well insulation works, it is not the only point to consider when picking the most effective roofing insulation. Moisture will certainly create both fibreglass batts and cellulose fill to lose R-value. Even small moisture, that you can not see or feel, could reduce the R-value of fibreglass batts.
Neither fibreglass batts or cellulose fill insulation can seal every void in your roofing system. Warmth can travel through the open voids as well as this lowers the R-value of the insulation, although the R-values detailed for fibreglass or cellulose do not take this right into factor to consider. In other words, the real R-value of mounted fibreglass batt or cellulose fill roof covering insulation is less than the provided R-value.
Spray foam insulation is not influenced by moisture. As a matter of fact, it could quit minor leaks considering that, when it is applied, spray foam insulation infects load every space and also seal your roofing system. Pollutants as well as various other air-borne irritants that might survive the gaps left by batts and fill are stayed out by spray foam insulation.
Perhaps most importantly, insulating your roof covering with spray foam insulation costs regarding the like other insulations.
The spray foam roof insulation professionals at Foam Convenience have the encounter you should start one of the most from your insulation.