Why It Happens Here
Worse from up here than it looks from down there.
Kelowna’s wind comes off the lake and up the benches, and it arrives in gusts that load one slope of a roof much harder than the rest. Asphalt shingles hold on with a strip of adhesive that seals in the sun the summer they were installed. Once that seal is broken, by age, by heat cycling, or by one gust that lifted the tab and dropped it back, the next gust gets under it and peels the course. That is why storm damage runs in bands across a slope, like the photograph, and why the shingles that stayed on around the bare patch are usually not fine either.
Hail does its damage without taking anything off the roof. It knocks the granules out of the mat in a bruise the size of a coin, which lets UV at the asphalt underneath, and that spot cracks through in a year or two. From the ground a hailed roof looks untouched. Trees do the opposite: obvious damage on top, and cracked decking underneath that nobody sees until the next rain comes through it.
When the Tower Ranch windstorm stripped shingles across the neighbourhood, Castanet spoke to Premium Roofing’s crews as they worked through the repairs. Same crews, same phone number.