Slate Roof And Hail

On june 6 2018 hailstones the size of baseballs hit parts of north texas from carrollton to coppell to arlington with significant property damage.

Slate roof and hail.

Hail damage to a slate roof is easily identifiable. Genuine vermont slate a natural stronger alternative to synthetics astm s1 quality the highest available slate rating for strength and longevity. External impacts are not limited to hail but may be from windborne or thrown rocks golf balls or even bullets. This is the only product available that offers a warranty against any size hail.

Hail damage is primarily displayed as holes with sharp edges in the slate although it can include slates with broken corners or edges. After that it reverts to the standard warranty for hail of two inch diameter or less for 30 years. Natural slate hail testing results the testing was conducted on north american produced s 1 rated natural roofing slate by architectural testing of southlake texas in accordance with factory mutual fm 4473 specification test standard for impact resistance testing of rigid materials by impacting with freezer ice balls. However unlike these other roofing materials vermont slate hp is factory warrantied against hail impact damage of any size for the first 20 years.

And 3 slates installed in a side lap style where much of the roof has only a single layer of slate. Original slate was poor quality the installation was a side lap single layer of slate and the size of the hailstones. The damaged slates should simply be replaced. A hailfire roof protects against weather and climate conditions better than any other roof.

Although slate tends to be durable and resistant to hail damage there are three primary conditions that will maximize hail damage to a slate roof. 1 very large hail. It has been beat to death by the hail but only a few of the slates have been damaged. Fm 4473 class 4 the highest class rating for hail impact resistance.

Note the aluminum vent above. In most cases slate roof tiles are resistant to hail damage and other impact damage. But metal clay and slate roofing can also be difficult. In deciding whether damage is from hail it s important to look at the overall pattern of damage across the roof.

Clay and slate roofs will usually have cracks or gouges when the stones hit while metal roof repair will show dents from the impact of the hailstones. 2 thin soft or deteriorated slates that are relatively fragile such as older pennsylvania soft black slates. A roof with a single layer of slate is more likely to develop leaks as the result of a hailstrike. Hail damage to other types of roofing systems shingles might be the trickiest type of roof to assess for hail damage.