Roof Shingle Blow Off

Roof Shingle Blow Off

Do you have missing shingles which have blown off your roof?

“How do winds cause shingle blow off?”

There are several causes of shingle blow off (aka roof blow-off):

1) Incorrect installation … usually caused by improper placement of the nails securing the singles.

2) Too much air-pressure from the nail gun sinking the nail too far in causing the shingle to tear making it insecure. (This can also eventually cause roof leaks.)

3) Missing shingles can also be due to the seal failure of the shingle.

4) Shingle blow off can be caused by severe Denver Colorado winds which exceed the manufacture rating of the roof shingle.

When American Roofing finds a roof which has a few shingles missing, and there haven’t been damaging winds over 60 mph, we usually replace the missing and damaged shingles.

We carefully remove the damaged shingles still remaining, then we reinstall new shingles matching the color and style as closely as possible, and properly nailing them per manufacturer’s specifications.

Next, we apply roof cement between the layers of shingle to insure that the old shingles bond with the new shingles.

(Of course, we thoroughly clean up any job related debris when the repair is completed.)

Shingle wind damage

One caveat about roofs which have sustained this type of damage. Even more roof shingles may blow off in other areas of your roof in the future. Unfortunately, there is no accurate way to predict or prevent this or to determine whether or not it will even occur.

Your best bet is if you’ve had two instances or more of shingle blow off on your roof, consider full roof replacement.

With Colorado’s winds, it’s a necessary “evil” to get your roof thoroughly inspected for wind damage every year. If it needs replacement, it will be covered as a loss on your homeowners insurance.

Remember to occasionally look at every section of your roof. Missing shingles may not cause a roof leak right away, but it will eventually because the roof felt will deteriorate.

Also, why not do your neighbor a favor if you see some missing shingles on their house, and let them know? Sections of their roof may be more visible from your property than theirs, whereas they can’t see the damage. They will thank you.

American Roofing does both one-day roof repair and roof replacement, and we specialize in getting insurance claims approved where other roofers couldn’t.

You can call me (Mike) at (303) 681-9199, and I’ll come out and give you a 20-point roof inspection for free without any obligation. (Or fill out our form online)

We’ll help you nip shingle blow off in the bud so it prevents future roofing system problems in the future.


Pros & Cons of Types of Roofing Materials

Select a roof cover for your home that will perform better in high winds and hail storms.

Step 1

Understanding the characteristics of roof covering materials

When choosing roofing to address hail and high wind risks:

Look for materials rated by UL 2218 or FM 4473 as Class 3 or 4, which indicates they have been tested and found to stand up to increasing levels of hail damage.

Make sure the roof cover you choose is rated for the wind speed in your area. For example, shingles meeting the ASTM D 3161 Class F standard are rated for wind speeds up to 110 mph, while shingles meeting the ASTM D 7158 Class H standard are rated for wind speeds up to 150 mph.

Proper installation is a critical step in ensuring optimal performance in high winds.

Asphalt Shingles:

Relatively low cost, light weight, and easy to install
Good fire resistance (usually Class A)
UL 2218 Class 3 and 4 impact resistance is available, should be used in hail-prone regions
Available with wind warranties up to 130 mph, if installed in accordance with manufacturer’s high wind requirements
Look for products that meet ASTM test standards for wind

Metal Roofing Material

Long life
Popular for low and steep-slope roofs
UL 2218 Class 4 products rated for impact resistance are available, but often receives cosmetic damage from hailstorms
Products available with Class A fire rating
Can be installed for high wind requirements

Slate Roofing Material

Very strong
High quality slate can outlast most other roofing materials
Requires special skill and experience for installation, which can affect cost
Heavy weight; your contractor should verify the structure can hold the weight if you are replacing another kind of roofing material
Can meet FM 4473 Class 3 or 4 impact resistance depending on slate

Look for products with a Class A fire rating

Tile Roofing Material

Solid, long-lasting product
Products available with FM 4473 Class 3 or 4 impact resistance
Can be more permeable than other products if exposed to blowing rain and requires a high quality, well sealed underlayment
Heavy weight; your contractor should verify the structure can hold the weight if you are replacing another kind of roofing material
Proper installation is critical in high wind areas
Look for products with a Class A fire rating

Wood Shakes

Better in dry climates
Special underlayment installation generally required in areas with high humidity
Thinner products can be susceptible to hail damage, especially after aging
Some building codes limit use because of wildfire concerns;
Some fire retardant treated products meet a Class B fire rating;
Class A “assembly” fire rating can be achieved using a Class B roof covering and fire resistant underlying materials
Often used in wrong climates for cosmetic reasons


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