Several Calgary homeowners say reflected sunshine is causing their vinyl siding to melt.
The phenomenon happens when some types of reflective glass — often double-paned, energy efficient windows — bounce sunlight onto the siding, usually from an adjacent house, according to the U.S.-based Vinyl Siding Institute.
Contractor Helene Raymond gets calls a few times per year from people whose siding has melted.
“One time there was a guy who put his boat on the side of the driveway, and the reflection of the windshield of the boat was getting the siding all melted above his garage door. So any kind of reflection could create that,” she said.
Homeowner Chris Christie's skylight acts as a magnifying glass, melting her neighbour's vinyl siding.
But what burns her most is that the previous owners never told her — or her neighbour — about the problem, she said.
“It will happen again because that was repaired when he moved in, they told him it was hail damage, and as soon as summer hit it started happening again,”
Chris Christie, whose siding on his northwest Calgary home has been damaged, is looking for a solution, and for someone to pay for it.
“After we moved in we noticed it melted, so we thought, 'Is it the siding manufacturer's responsibility? Is it the homeowner? Is it the homebuilder?' And I noticed that no one wants to take responsibility, even the homebuilder,” he said.
“It shouldn't be our responsibility to take care of it,” he added.
Experts at the Vinyl Siding Institute suggest coating the offending glass to reduce its reflective intensity.