Roof-Over vs. Standard Roof Replacement: Which One Is Best?

If you are planning on getting a new roof, a few roofing contractors may have offered the options of a roof-over instead of a standard roof replacement. But what’s the difference between the two?

Roof-Over

Also known as reroofing or roof overlay, a roof-over is a process where roofers install a new roof right over the old one. Its key benefit is the cost savings: by eliminating teardown and disposal, it helps reduce labor costs. It also helps cut down on installation time, which can be a critical factor if the roof is getting replaced under less-than-favorable conditions, such as during rainy seasons. The extra roofing layer may also provide additional impact resistance.

Roof-overs also have their drawbacks, which should be considered when choosing between the two methods. Firstly, there are certain conditions that must be met before an existing roof qualifies for a roof-over. Since a new layer essentially doubles the weight of the roof, a roof-over is not suitable for very old or compromised roofing structures. The old roof will also need to be thoroughly inspected by a roofing contractor because there will not be an opportunity to address hidden problems once the new roof is installed.

Standard Roof Replacement

The key difference between a roof-over and a replacement is that the latter involves tearing off the old roof before a new one can be installed. It essentially gives your roof a new start because it allows roof installers full access to the structural components and perform repairs as needed. Roofing systems with features like high wind resistance and energy efficiency usually require standard roof replacement methods. Roofs installed this way typically have better warranty coverage and may even fetch better insurance premiums.

When choosing between a roof-over or standard roof replacement, it usually helps to weigh the pros and cons, and consult with a roofing company that has experience with both methods.

Crown Roofing LTD is your leading provider of roofing repairs and installation company. Give us a call at (604) 370-6288. You can also fill out our contact form to schedule an appointment. We serve customers in Surrey and New Westminster.