Whether or not you end up with expensive roofing repairs to make depends on how well your roof was installed. You can avoid costly problems by making certain that the best practices are followed when your new shingles are put on.
Covering Old Shingles
You can save time and money by having new shingles nailed on over the old, problem shingles. Unfortunately, this process allows excess dirt and moisture to collect in numerous places, shortening the life of your new shingles. You may pay more in labor to have the old shingles removed, but it will be worth it in the long run. If installed correctly, your new roof should last between fifteen and thirty years.
Not Enough Slope
A knowledgeable roofing company will not shingle an area that has no slope. If the roof doesn't provide enough inclination naturally, a good roofer will create enough slope to ensure proper water drainage. If shingles will not work in some areas, the professional roofer will use other, low-slope materials to protect your roof.
Nails that are inserted at an angle can tear the shingle and allow water to penetrate it. If the air compressor pressure is set too high, it can "over-drive" the nail and tear the shingle. In both of these cases, the shingle needs to be replaced. If these damaged shingles are not removed, your new roof is likely to leak sooner rather than later. Another possible mistake is "high nailing," which means the roofer places the nails too high up on the shingle, allowing the lower part to become loose and even fall off the roof. A reputable roofer will not make these mistakes, but you might if you plan a DIY job.
Reusing Roof Flashing
You may be tempted to save money by recycling those metal strips and putting them on your new roof. Even if the flashing is currently in decent shape, it will not last as long as the rest of your "new" roof, meaning you will either have to replace it in a few years or risk having water pool on your roof. You would be wiser to buy new flashing at the time of your shingle-install.
Whether you or a professional installs your roof, taking shortcuts can hurt you a few years down the line. You want your new roof to be problem-free for at least fifteen years, so do everything the correct way, and do not ask your roofer to cut corners.
Is the roof on your home ready for replacement? If so, do you know what type of roofing you are going to have installed to replace it? Will you have the existing roof removed, or just have the home re-roofed? You will face several decisions while you work to replace the roof on your home. Scroll through my site to find a great list that can help you decide what product and method of installation will be best for your home. Hopefully, the information provided will take some of the confusion and stress out of this big, important home improvement project.