For the amount of investment that a new roof requires, a property owner must be able to expect a complete and error-free installation of a shingle roof. Because not only a botched roofing job can lead to expensive repairs but it also enhances the risk of roof failure and collapsing.
Here are some of the common shingles roof installation mistakes to avoid.
Mismatched Roofing Shingles.
The use of mismatched shingles is not only an unpleasant sight but can also cause an imbalance in fittings. Ultimately leading to water seepage and wind damages. This obvious mistake occurs when a roofing contractor or a homeowner uses multiple dealers for the supplies. Thus, one can avoid this mistake by selecting a roofing contractor that consistently uses the same roofing supplies distributor.
Improper Installation of Underlayment.
Roofing underlayment is a concept of layering a water-resistant material that is installed directly onto your roof deck. The underlayment gets applied under all other roofing materials as a form of an added layer of protection against severe weather and the elements. Usually, the 3 types of underlayment are;
1. Rubberized asphalt underlayment.
2. Asphalt-saturated felt.
3. Synthetic underlayment.
Multiple Layers of Shingles.
By tearing off the old roofing system to install a new one, your contractor can have a chance to thoroughly inspect the roof’s deck for any weaknesses, gaps, or other potential issues. Furthermore, your roof deck will not have to support the weight of the two systems.
On the contrary, some commercial roofing systems are engineered in such a way that overlays an existing roofing system. However, before this happens, the number of layers gets checked first and the decking is tested for its soundness.
Unsuitable Use of Roofing Nails.
Roofing systems that utilize nails support to secure their position to the roof deck have specific size and usage guidelines. Here are some of the common mistakes that could lead to your insurance company refusing to pay a claim in the event of roof failure;
• Nails without barbed shanks.
• The length of the Nails; too small or too long.
• Not using enough nails for reliable support. i.e. four per shingle and six for higher slopes, on average.
• Nails that are driven above the self-sealing; or into knotholes or gaps in the roof deck.
Missing Starter Shingles.
A starter section of shingles should be laid along the eves; it helps develop a watertight barrier. Without the proper use of starter shingles, water will make its way to the roof deck through the cutouts of the bottom shingles quite easily. Thus, causing damage to the structural stability of your roof.
Incorrect Shingle Overhang at the Eves.
Shingles overhang at the eaves must remain between 6mm to 10mm.
More than a 10mm overhang can result in the shingles being blown off during high winds or severe storms. On the other hand, less than 6mm can result in water infiltration of the roof deck and leaks within the structure.
That’s why all of the roof repair, renovation, or waterproofing procedures must remain carried out by licensed and skilled commercial roofing company queens only.