Slate Roof And Hail

Hail damage to other types of roofing systems shingles might be the trickiest type of roof to assess for hail damage.

Slate roof and hail.

Fm 4473 class 4 the highest class rating for hail impact resistance. Original slate was poor quality the installation was a side lap single layer of slate and the size of the hailstones. However there are a number of factors that could cause damage such as. 1 very large hail.

A hailfire roof protects against weather and climate conditions better than any other roof. A roof with a single layer of slate is more likely to develop leaks as the result of a hailstrike. And 3 slates installed in a side lap style where much of the roof has only a single layer of slate. But metal clay and slate roofing can also be difficult.

Hail damage to a slate roof is easily identifiable. 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. The damaged slates should simply be replaced. 2 thin soft or deteriorated slates that are relatively fragile such as older pennsylvania soft black slates.

Genuine vermont slate a natural stronger alternative to synthetics astm s1 quality the highest available slate rating for strength and longevity. In deciding whether damage is from hail it s important to look at the overall pattern of damage across the 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. After that it reverts to the standard warranty for hail of two inch diameter or less for 30 years.

The first section of the video shows poor repair work from previous contractors on the vermont slate roof. External impacts are not limited to hail but may be from windborne or thrown rocks golf balls or even bullets. The second section of the video shows the affects of hail damage on slate roof. Hail damage is primarily displayed as holes with sharp edges in the slate although it can include slates with broken corners or edges.

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. However unlike these other roofing materials vermont slate hp is factory warrantied against hail impact damage of any size for the first 20 years. In most cases slate roof tiles are resistant to hail damage and other impact damage. This is the only product available that offers a warranty against any size hail.