MARKLY SINGLE ROOF UPGRADE

“Hail storms account for 30 percent of the new roofs,” says Malarkey. Manufacturers are increasingly aware of the importance of making a shingle line that can withstand high winds and hail storms. Impact-resistance is another key element that manufacturers are building into contemporary shingles. Adding polymer to the shingle also increases its resistance to cold weather and thermal shock.” “If the SBS shingle cracks and it’s flexible, it can heal itself. “The flexibility gained by adding SBS in a residential shingle also enables the shingle to heal itself,” says Jenne. Some insurance companies are offering significant discounts to their customers for using impact-resistant shingles in storm prone areas. For example, hip and ridge impact-resistant shingles can be used where hail is prevalent. SBS polymer modified shingles are also useful for hip and ridge work and for impact resistance because of their flexibility.Īccording to Jenne, the use of polymer modification increases the range of conditions and uses where shingles can be marketed. “An inner layer of polymer makes a difference in the shingle’s performance.” “A polymer modified shingle has increased resistance to cold weather and weathers better too,” says GAF’s Jenne.

They don’t wear off or blow off as quickly when the shingles are polymer modified,” says Todd. “The granules reflect the sun’s UV rays and keep the shingles from weathering.

The granules stay on the shingle longer than with conventional blown asphalt.” “We use SBS in our StormMaster line because the SBS provides better adhesion to hold the surface granules better, and it also causes them to weather longer. “SBS causes our shingles to withstand weathering longer,” says Todd. He suggests using 8 to 12 percent SBS for the optimum residential shingle.Įd Todd, Director of Product Management for Atlas Roofing, says their SBS-modified shingles resist cracking and shrinking in both hot and cold weather climates. “Most asphalt shingles are modified with 6 to 7 percent SBS, but more is needed.” “They need to have enough polymer in them,” Malarkey says. Malarkey says SBS shingles are definitely stronger and weather better. We use it in combination with virgin asphalt to produce our premier shingle – the Legacy line.” “We’ve been using SBS in our roofing shingles since 1986.

“SBS makes a dramatically superior shingle,” says Greg Malarkey of Malarkey Roofing Products. We also use polymer modified asphalt in our Capstone hip and ridge product,” says David Jenne, Executive Director, Raw Materials Purchasing for GAF Materials Corporation.īetter weathering and impact-resistance are the two primary benefits of using SBS in asphalt roofing shingles. “Our premier impact-resistant shingles, Timberline ArmorShield, use polymer modified asphalt. “We’re using less neat asphalt and more polymer modified.”Īlthough roofing manufacturers are using more PMA to produce their premium quality shingles, most are still relying on blown asphalt to produce their standard or entry-level shingles. “Asphalt modification is increasing,” says one roofing manufacturer. They also agreed that the use of SBS in residential shingles would increase in the next decade.

Most of the shingle manufacturers that we talked with agreed that the addition of SBS produced a superior shingle.

MARKLY SINGLE ROOF UPGRADE

Asphalt roofing manufacturers are using more polymer modified asphalt (PMA) in their roofing shingles with positive results.Īlthough most standard roofing shingles are still made with blown asphalt, roofing manufacturers are increasingly using PMA, or styrene-butadiene-styrene (SBS) for their upgrade and premium shingles.

Markly single roof