In most cases, yes. A full tear-off adds a day of work, but it is usually the right way to install a new roof.
By the numbers
- Under the International Residential Code, a roof that already has two or more layers of roofing must be torn off before a new roof goes on.
- A tear-off is also required when the existing roof or decking is water-soaked or too deteriorated to be a solid base.
- Most residential tear-offs and installs in the Memphis area take 1 to 2 days on site.
Why we remove the old roof
- See the decking. Rotted or soft wood under the shingles can only be found and replaced once the old roof is off.
- Install the system correctly. New underlayment, ice-and-water shield, drip edge, and flashing need to go on a clean deck.
- Avoid extra weight. A second layer of shingles adds weight to the roof structure.
- Protect your warranty. Manufacturer system warranties generally require installation to their specifications, and some enhanced warranties require a tear-off.
What about roofing over the old shingles?
Laying new shingles over old ones can cost less up front, but it can hide damage, trap moisture, and shorten the life of the new roof. Local building codes also limit how many layers a roof can have.
What to expect
Most residential tear-offs and installations in the Memphis area are completed in one to two days on site. Learn more about our roof replacement process or schedule an estimate.
