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The basic gauge of the performance of any insulation is its R-value. Insulation is made to stop the flow of heat. Learn further on our partner website - Click here close remove frame. The more warmth the insulation stops, the larger the R-value of this insulation. When compared to fibreglass batt insulation, spray foam insulation features a higher R-value at a given depth. In other words, 2 inches of spray foam will insulate your top better than 2 inches of fibreglass batts. Cellulose fill, often blown-in or applied manually, also offers an increased R-value than fibreglass batts at the same thickness. But, again, the R-value of spray foam insulation is practically twice as high as cellulose fill insulation of the same depth. As essential as R-value is in how effectively insulation works, its not the only thing to consider when choosing the most effective roof insulation. Water can cause both cellulose and fibreglass batts fill to lose R-value. Also minor humidity, which you cant see or feel, can reduce the R-value of fibreglass batts. Neither fibreglass batts or cellulose load efficiency may close every hole in your roof. Heat can move across the open spaces and even though the R-values detailed for fibreglass or cellulose dont just take this into consideration, this decreases the R-value of the warmth. In other words, the particular R-value of installed fibreglass batt or cellulose complete roof insulation is leaner compared to listed R-value. Spray foam insulation isnt afflicted with humidity. In reality, it could stop slight leaks because, when it is applied, spray foam insulation advances to close your top and fill every hole. Pollutants and other airborne irritants that might cope with the gaps left by batts and load are kept out by spray foam insulation. Perhaps best of all, insulating your ceiling with spray foam insulation costs about the same as other insulations. The spray foam top insulation experts at Foam Comfort possess the knowledge you need to obtain the most from your insulation..