Can You Put a New Roof Over an Old Roof?

Dec 10, 2019

New Roof Over Old RoofThe simplest answer to this question is, yes. You can install a new roof over your old system. But should you? The simplest answer to that question is, no. While you may be tempted to simply “re-roof” because it can bring down the cost of the replacement by a good amount, there are myriad problems with this approach and you may end up spending more money fixing those problems than you would have spent on a full-scale roof replacement.

Why You Shouldn’t Add a New Roof Over Your Old One

Some of the most common problems that come with re-roofing include:

  • You won’t be able to inspect the roof sheathing, which can pinpoint certain problem areas on your roof deck that need to be repaired.
  • You will be stuck with the same underlayment as before, which is where many roofing issues begin. For example, water can often escape under your shingles and into the underlayment, which can cause major problems if not properly addressed.
  • Installing another roof on top of your current one doubles the weight, which your home may not be able to handle. (Most homes are only able to handle the weight of one roof.)

Additionally, if you are thinking about a re-roof project, remember that you can’t mix roofing materials. So, if you have a wood shake roof installed right now, you can’t have an asphalt shingle roof installed over it. In fact, the only roofing material that you can re-roof with is asphalt shingles, which are arguably one of the more lower-quality roofing materials.

Turn to Byers for a New Roof

If you need a new roof for your home, make it count and choose a full roof replacement. Byers, a leading home improvement contractor in Northern California, provides full-scale replacements in which we will tear out your old roof, carefully inspect your roof sheathing, and expertly install a new roof on your home. Give us a call today to schedule a free consultation.