Many roofers use 15 or 30 pound felt as their standard because it is cheaper and lightweight. Problems with lightweight felt are that it's more likely to rip. During installation, a 10 mph wind can rip 15 pound felt and the protective oil saturation in the material can dry out much too soon. Once the oil dries out of the felt, the summer heat then sucks oil out of the asphalt shingles causing them to age quicker, crack, curl, and ultimately leak sooner.
Integrity Home Pros Standards
Integrity Home Pros uses only manufacturer approved synthetic underlayment as its standard. It is sturdier, higher grade material, and with the synthetic underlayment it withstands high winds and gives the secondary layer of protection what is needed for a well-built roof. Best practices and manufacturer's specifies using the manufacturer approved synthetic underlayment.
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