Roof Replacement Basics – Is It A Good Idea To Lay New Shingles Over Old Ones?

roof replacementA lot of people are still wondering if they can install new roof shingles over old ones. The short answer is, yes. However, it’s not the perfect idea that comes to mind about a roof replacement. Building over something isn’t what you would call a replacement. Although it has some benefits, it’s not always the case.

Why should you add new shingles over old ones?

There are two main reasons for this which are convenience and cost. First of all, you don’t really need to rip off the old roof to begin the installation. If you’re in a rush to get a new roof installed, this is one way of doing so. It will not set you back a few days or a week to have all the old shingles stripped off. The other factor is cost. You will be needing a lot of man-hours to remove all the old shingles. This tear-off process is quite laborious and will take some time. However, there are just two benefits to doing this process and nothing more. Most experts like NMB Roofing Pros don’t recommend re-roofing and advise homeowner to go with a full roof replacement instead.

Should you go for a full roof replacement or layover old shingles?

The short answer is, no. Roofing contractors don’t recommend this process. It’s better to just go with the normal process of roof replacement North Myrtle Beach. Why? There are a lot of downsides to laying new shingles over old ones. Here are some reasons why you are better off with a complete roof overhaul than taking a shortcut:

  1. Shingles add weight – any kind of roofing material you install will add weight. The roofing structure can only withstand a certain amount of pressure. Over time, the added pressure that laying over shingles provide will cause the roof structure to deteriorate much faster. In simpler terms, laying over old tiles is just a quick fix with no real long-term benefit. It’s best to start with a clean slate and add a new roof.
  1. Replacing the underlayment will be a pain – the building paper that’s installed between the shingles and the roof sheathing is there to serve as a barrier against water. Over time, this barrier weakens and will need to be replaced. However, installing new tiles over old ones will make it impossible to reach the old building paper without tearing apart the new set of shingles. It also isn’t a great choice for residential roofing.
  1. Re-roofing won’t add to resale value – if there’s one thing that you don’t want to do its hurting your home’s resale value. If you’re planning on selling your house in the future, you might want to take a step back and think things through. Re-roofing might offer you upfront convenience and savings but it will hurt the valuation of your home in case you sell it. In general, you’re better off considering roof repair before going down the re-roofing path.

Call NMB Roofing Pros if you want to make sure that you are working only with a reputable and experienced roofing company.

NMB Roofing Pros
North Myrtle Beach, SC 29582

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