When thinking about roof repairs, the most common options are re-roofing and roof replacement. Sometimes people rush to replace their roofs when the best solution is actually re-roofing. Before you consider re-roofing, here are things you need to bear in mind.
Putting a Second Layer
While many building codes permit you to have two layers of asphalt shingles, it may not be a good idea to strip down everything, including the plywood sheathing. It is much faster and less costly to nail new shingles on top of existing ones. Tearing off the old roof is expensive because of the labor and materials involved.
However, the downside of adding a new layer is you cannot assess the sheathing for signs of water damage. Therefore, if your roof has some damage on one side or has lost some shingles, you should think of adding a second layer. This is also a viable option if you only have one layer on your roof.
Whether Re-Roofing Will Add Excessive Weight on Your Roof
Another consideration you should consider before re-roofing is the weight on your roof. Installing a layer of shingles over your roof can lead to serious problems if it is not strong enough to support an additional load. You need to have your roof inspected to determine whether it can bear additional weight.
Your roofing expert will determine whether adding an additional layer to your roof can lead to structural damage. Furthermore, your roof may even cave in or collapse because of the additional weight. Excess weight can also lead to leaks.
After you have chosen to re-roof, you should ensure you choose an experienced roofer. This is because the re-roofing should be done according to the instructions of the manufacturer. Failing to follow the manufacturer's instructions will mean your warranty is null and void.
For example, installing new shingles over brittle ones may compromise the structural integrity of the roof. Therefore, make sure you are familiar with the manufacturer's instructions. Also, ensure you take time to look into the credentials of the professional you are hiring to ensure they are fit for the job.
It's not all the time that a roofing issue is resolved with a new roof installation. The other option your roofer will recommend is re-roofing. It is not only cheaper, but it takes a shorter time. It also involves less labor and materials. Consult widely before deciding whether to re-roof or install a new roof.
For more information about roofing, contact a local roofer.