We first need to get a comparison system. The ‘R-Value’ system is outdated and does not reflect the benefits of Spray Foam. When viewed in a list with just a price, Fibreglass seems to be the logical ‘cheap’ choice and that is just what it is, it’s ‘1-dimensional. Fibreglass has a R-Value of 3. Spray Foam has a R-Value of 6 plus: adds 300% structure strength resists mould water resistant monolithic (no seams) insect resistant Fibreglass will slow cold down but Spray Foam stops the cold, adds to the structure, resists mould, rodents and insects, stops air infiltration. Spray Foam is a multi-dimensional system that the old ‘R-Value’ system does not take into consideration. Spray Foam costs more upfront but is more cost effective over time making it the inexpensive...
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