Thermoplastic membranes like pvc and tpo can withstand impact from hailstones up to 1 inches in diameter depending on the condition of the roof system.
Hail damage to tpo roofs.
Hailstorms can cause catastrophic damage to roofs especially when they are made from materials that aren t designed to hold up to high impact debris.
Hail damage on these types of roofs will be round strikes and indented pretty good.
Asphalt and or mat that appears shiny.
The most effective way to minimize hail damage is to choose durable hail resistant roofing materials.
Loss of granules which may expose the roof felt.
Here are the top hail resistant roofing options.
Random damage with no discernable pattern.
Asphalt and composition shingles hail damage.
The loss of protective granules exposes underlying asphalt to damaging sun rays.
Top 3 hail resistant roofing options.
Random damage with no discernable pattern.
Hail hits that are black in color.
Hail hits that are soft to the touch like the bruise on an apple.
Tpo although i can t say i ve personally seen a hail damaged tpo but i have seen hail damaged pvc and i would expect it would act similar.
Wood shingles hail damage.
Gutters are also susceptible to hail damage.
Roofs with multiple shingle layers may be damaged by smaller hail stones due to a softer support surface directly under the top shingle layer.
This is due in part to the fact that the top layer of the material is laminated.
Hail damageto tpo pvc membranes is typically evidenced byconcentric circular fractures or star shaped fractureswithin the top ply of the membrane.
Displacement of granules occurs when granules have been knocked off by the impact of hail stones hitting the roof.
Frontier roofingstar shaped fracture to thermoplastic membranefrom hailstone impact.
Tpo compounds have changed in recent years so it is impossible to say how long current roofs will last but a general estimate puts a tpo roof between 10 and 20 years.
Hail is a powerful force of nature that can even damage roofs made with concrete tiles if the stones are large enough and wind speeds are high.
If your roof contains one layer of common asphalt shingles it usually takes a 1 or above diameter hail stoneto cause damage roof hail damage.
Because seamless gutters are frequently feature aluminum or copper construction the signs of hail damage include telltale denting.