Hail Size To Damage Roof

The more extreme the wind the larger hailstones will be.

Hail size to damage roof. Therefore as hailstones get bigger wind damage should also be considered. When hail is combined with high wind speeds roof damage can be even more severe. Concrete roofs are broken or destroyed wooden walls are damaged large trees are split or knocked over people are at risk of fatal injuries. What size hail causes roof damage.

On average it takes a 1 or above diameter hail stone to cause damage to common asphalt shingles. The size and the material damage are related to each other and can be illustrated in the chart below. A single 1 inch hailstone probably won t necessitate a repair effort. Dime to quarter sized hail 3 4 to 1 inch.

Most storms produce hail that is less than two inches in diameter. When referring to hail sizes here are a few common objects to compare. The amount of hail damage to your roof may also be related to the number of shingle layers if you re dealing with a shingled roof. If you live in a region where more extreme hail is common you may need to consider a metal roof that has ribs or striations to deflect hail blows.

However it should be noted that hail is produced by wind updrafts shooting raindrops higher into the atmosphere where it freeze before it falls to your roof. Of course it depends on several factors including the duration of the storm the amount of hail that fell and so forth. Roofs with multiple shingle layers may be damaged by smaller hail stones due to a softer support surface directly under the top shingle layer. Marble sized hail can also fall into this safe zone and not normally cause damage to a roof.

If your roof contains one layer of common asphalt shingles it usually takes a 1 or above diameter hail stone to cause damage roof hail damage. 1 inch hailstones 3 tab shingles of asphalt 1 25 inch cedar shingles 1 75 inch concrete tiles 2 inch gravel roofing built up. If a storm brings hail that is over one inch in diameter the hail damage to your roof will probably be obvious. Generally speaking any hail above 1 inch in size has a high likelihood of causing damage to common roofing and siding materials.

Roofing made from soft metals such as aluminum and copper typically show dents that indicate the size of the individual hailstones. It s likely that you will be able to see signs of damage such as cracked or broken windows damaged siding or dented gutters. Gutters are also susceptible to hail damage. 4 inches and up.