Roofing Underlayments
After the old shingles are removed and repairs are made your clean roof deck is ready for its underlayment.
Underlayment is installed under your new shingles. It consists of leak barrier that is required in the most vulnerable
areas of your roof (valleys, pitch changes, low slopes, flashing runs, pipe penetrations, skylights and chimneys) and felt paper
that covers the rest of your roof deck.
Leak barriers are just that a barrier against leaks. The most trusted name in underlayments has always been GAF Manufacturing Corporation. StormGuard is GAF's thickest [60 mils], most tear-resist [up to 86 lbs] leak barrier.
Felt paper function is more complicated. It acts as a vapor barrier for your roof's deck or nailing surface. The permeance of this paper allows air flow [insuring a dry deck] and blocks liquid penetration. Felt comes in organic or synthetic forms.
Synthetic felt paper is becoming more popular, it ensures flatter nailing surfaces and stronger weather resistance. Builders and contractors are using these new products as temporary protection prior to roofing. However, these new synthetics tend to have a low permeance rating. This flaw can be fatal to a roof deck in a moist, humid Georgia climate.
GAF's felt paper known as Shingle-Mate is the perfect fit. GAF had our climate in mind, while most synthetics have a severe drop off with permeance Shingle-Mate is the exception. Shingle-Mate scored twice that of any competitor and 5.66 times higher than traditional paper.
Cranor Roofing uses StormGuard and Shingle-Mate on all roof projects ensuring long term superior performance.
If you have any questions about roofing underlayments, contact us today.
