Slate Roof And Hail

2 thin soft or deteriorated slates that are relatively fragile such as older pennsylvania soft black slates.

Slate roof and hail.

Hail damage is primarily displayed as holes with sharp edges in the slate although it can include slates with broken corners or edges. Note the aluminum vent above. Genuine vermont slate a natural stronger alternative to synthetics astm s1 quality the highest available slate rating for strength and longevity. The second section of the video shows the affects of hail damage on slate roof.

However unlike these other roofing materials vermont slate hp is factory warrantied against hail impact damage of any size for the first 20 years. Original slate was poor quality the installation was a side lap single layer of slate and the size of the hailstones. 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. 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.

The first section of the video shows poor repair work from previous contractors on the vermont slate roof. 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. But metal clay and slate roofing can also be difficult. External impacts are not limited to hail but may be from windborne or thrown rocks golf balls or even bullets.

A hailfire roof protects against weather and climate conditions better than any other roof. Hail damage to other types of roofing systems shingles might be the trickiest type of roof to assess for hail damage. In most cases slate roof tiles are resistant to hail damage and other impact damage. After that it reverts to the standard warranty for hail of two inch diameter or less for 30 years.

It has been beat to death by the hail but only a few of the slates have been damaged. Hail damage to a slate roof is easily identifiable. A roof with a single layer of slate is more likely to develop leaks as the result of a hailstrike. In deciding whether damage is from hail it s important to look at the overall pattern of damage across the roof.

The damaged slates should simply be replaced. 1 very large hail. And 3 slates installed in a side lap style where much of the roof has only a single layer of slate. Fm 4473 class 4 the highest class rating for hail impact resistance.