Understanding the Feasibility of Metal Roof Installation Over Asphalt Shingles
When considering upgrading your home’s roofing, the question often arises: Is it possible to install a metal roof over existing asphalt shingles? The answer is a resounding yes, but the process involves more than a straightforward yes or no. This article delves into the intricacies of this roofing method, offering insights and guidance for homeowners.
The Rising Popularity of Metal Roofing
Metal roofing has gained significant traction in the residential sector, offering a robust alternative to traditional asphalt shingle roofs. This shift in preference brings us to the critical question of whether it’s advisable to overlay a metal roof on existing asphalt shingles.
Overlay vs. Total Roof Replacement
Overlaying involves installing new metal roofing directly over the existing shingles, while a total roof replacement entails removing the old roofing material before installing the new roof. Each approach has its unique advantages and considerations.
Evaluating Your Current Roof’s Condition
Before deciding on an overlay, it’s crucial to assess the condition of your existing asphalt shingle roof. Factors such as previous damage, repairs, and overall roof health play a pivotal role in determining the suitability of an overlay.
When is an Overlay Appropriate?
An overlay might be a viable option under certain conditions:
- The existing asphalt shingle roof is in good, undamaged condition.
- There are no more than two layers of old roofing.
- The structural integrity of the current roof can support the weight of the new metal roofing.
Pros and Cons of Metal Roof Overlays
While a metal roof overlay can be an attractive option for some homeowners, it’s essential to weigh its advantages and disadvantages.