Blown-Off Shingles: The Main Causes

When severe weather condition makes roof shingles to blow off a roofing, most homeowners fast to call somebody to repair the damages. While this stops any type of prompt damages or exposure to the roof deck, it ignores the more crucial question: why did the shingles start to blow off? Addressing this question will reveal the hidden problems that could be impacting your roof covering.

Usually, the shingles have a wind rating of 110– 130 miles per hr. This indicates they are expected to remain on your roofing and function properly during severe gusts. According to the National Hurricane Center, these are the winds  of the second and third category, that basically come with moderate to major storms. Simply put, you may start worrying that roof shingles might blow off only in case of significant weather events such as storms or hurricanes. If this is not the instance, then there is likely a material defect or structural issue.

There are two ways in which shingles are connected to a roof covering. First, roof nails hold individual shingles firmly and securely to the deck. There are many different nails of various sizes and materials, yet roof nails are usually recognized for having wide, flat heads and short shanks with sharp points. This makes possible for the nail to fasten the roof shingles without damaging the wood or ripping the shingle. Another way for attaching the roof shingles is by using the  adhesive strip put on the back bottom side. These adheres to the shingle below it, creating a seal by joining all the shingles together. This provides a strong, water-tight roof.

Why Shingles Blow Off?

There are a variety of reasons for roof shingles to blow off and most require a visual evaluation by a certified roofing professional. Roofing Chattanooga serves both residential and commercial roof coverings, and will inspect your roof even in a case of emergency.

The most typical reasons are:

Incorrect Installment

A common problem is nails being placed too high up on the shingle instead of across the nailing strip. This decreases the holding power of the shingles and they can be ripped from the nails easily after.


The life-span of the ordinary asphalt roof is approximately last 10– 15 years, depending on aspects consisting of the high quality of the materials and direct exposure to the elements. When a roofing is too old and its life-span is nearly over, there are several indicators that it needs substitute. One such sign is when adhesive seals no longer join shingles. The shingles performance quickly decreases and the chance that the shingles will be blown off during the next storm increases when the seals no longer hold the shingle in place.

Roof Damage

Loose roof shingles may additionally be a sign of significant underlying roof damages. The usual roof deck consists of OSB board, plywood sheathing, corrugated metal, or similar durable material. The function of the deck is to provide a base for roofing coverings as well as membrane layer to be attached to. If water i able to penetrate the roof through shingles, the deck can become compromised. If it rots or warps, shingle nails can pop, causing shingles to be easily blown off the roof.

Roof Was Installed Recently

If the roofing system is new, it is possible that not enough time has passed for the seal strips to set properly. Depending on the quality of the shingles, temperature level and amount of sunlight, this can take four-six weeks. Our professionals will certainly change blown-off shingles for free if the roof was installed recently. The challenge for the homeowner is to determine if the damage is due to the sealing or because the shingles may have been installed improperly.

It should be clear that missing shingles are truly a sign of other, much more severe issues with your roof. You have 2 choices when it comes to roofs: repair or replace. Call Roofing Chattanooga for professional advice and inspection!

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