Built up vs SPF roofing?

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Old 06-20-13, 02:51 PM
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Built up vs SPF roofing?

I have a house in Arizona with a built up roof system on a low slope roof. The roof decking is plywood on top of 2x8 beams and no attic space. There are insulation bats and then the interior sheetrock. There are 2 ft overhangs on all sides of the house with the beams and roof decking exposed. The attached garage also has the beams and roof decking exposed. The roof is probably close to 20 years old. The coating is badly deteriorated. 2 1/2 years ago I got 3 bids each recommending a reroof using a built up 3 ply system with Elastek coating. I just learned of SPF roofing- spray polyurethane foam and got an estimate for it- main advantages seem to be greater R value and 10 year warranty with no maintenance required for 10 years. Built up roofs have 4 year warranty and need recoating every 4- 5 years. Any opinions on the built up vs. the spray foam would be appreciated.
 
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Old 07-19-13, 05:39 AM
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Spray foam roofing is an interesting roofing material consisting of two different liquid materials that combine to form a seamless roofing material. One of the most popular techniques being used in roof insulation and roof repair is the spray foam roofing system. This technology has been around for many years and has been growing in popularity because of the many outstanding benefits and advantages over other types of roofing applications. When it comes to the foam material being used, most roofing contractors recommend polyurethane foam.
 
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