Commercial roofing membranes last a long time, but the rubber or plastic degrades at some point. When that happens, you'll need to get a roof replacement. It's common to put new roofing over an old membrane, but that's only if your roof doesn't have too much moisture damage. Your roofer will probably do a moisture survey to determine if the deck needs to be replaced. Here are some more things to know about a commercial roof replacement.

It's Best To Install Membranes In Mild Weather

All types of membrane roofing can be installed in the winter, but the installation process may take more time because of the precautions that are needed. Time may be needed to allow cold membranes to relax before they've adhered. Special steps might be needed for storing and applying the adhesive so it is warm enough to bond well.

These issues can be avoided by having your new roof put on during the spring, summer, or fall. However, if you need a new roof to make it through the winter, it's possible for commercial roof replacements to be done when it's cold as long as the necessary precautions are taken.

New Insulation Boards Go Over The Old Membrane

When your roofer puts a new membrane roof over an old membrane, they'll probably put down new insulation boards first. Since the old membrane is covered up, you can put any type of membrane on when you get your new roof and not worry about whether it will adhere well or be compatible.

If you had a lot of problems with your old rubber roof, talk to your contractor about the right type of roof replacement to get so you have better results. You might want to try TPO or PVC if your contractor agrees they would be good.

A commercial roof replacement membrane is often chosen to match the environmental surroundings, such as the type of gases or grease that vents from your roof, so your contractor might advise you to keep the type of membrane you already have.

Moisture Damage Should Always Be Repaired First

If moisture damage on the deck and old insulation boards isn't removed and replaced with dry materials, your roof could rot. Then your roof replacement wouldn't last very long, and that would be a waste of money. It's worth the investment to have a thorough moisture survey done. This identifies the areas with moisture damage so they can be removed to eliminate the risk of mold and rot affecting your new roof.

For more information on commercial roof replacement, contact a professional near you.