There are a lot of mistakes that roofing installation contractors commonly make when installing the roofs. As a homeowner, you need to know these mistakes for purposes of inspection when the work is complete because if the roof is not done the right way, it can get damaged after a short time. Some of the common mistakes to check are outlined below.
Choosing roofing materials that are not designed to accommodate the slope of your roof leaves your house susceptible to penetration of water. The minimum slope of four units of rise for every twelve units run advisable when installing, tile shingles, shakes, wood, and asphalt.
Incorrect installation of starter shingles
Most roofing contractors make this mistake. It is critical that you lay down the starter shingles along the eaves otherwise water can easily evade the sheathing and hence cause serious damage to your roof as well as the house.
Improper use of nails
Shingles can blow off or slip if they are not nailed properly and in the right manner or if the nails used are too few. You need to use at least five nails for every shingle and six nails if the roof has steep grades. Check the local codes to know if the area in which you live experiences high winds that may require the six-inch nails.
Insufficient securing of valley flashings
Roof valleys are the areas on the roof that are most susceptible to leaks since they handle large volumes of runoff water. When installing metal flashing in the roof valley, not using enough securing materials or sealant can be a cause of buckling and cause water leaks.
Not allowing attics and ceilings to vent
When laying the roof shingles, it is important to ensure that air can escape from the ceiling and attics. Otherwise, moisture may build up with time and prematurely weaken the shingle material.
Shingles not sealed down
Most of the shingles are usually self-sealing. If you install them in severe cold, or dirt is blown below the shingle during installation, then they may not seal down. Winter application shows that if the surface temperature is very low, then you must use an adhesive must be placed between the shingles.
Most roofing contractors know these mistakes however they tend to be in a hurry to finish the work thus making these mistakes. As a homeowner, you need to check these mistakes to ensure your roof is firm and safe.