How To Maximize The Life You Get From Your New Metal Roof

Posted on: 4 March 2016

You can expect to get up to 80 years of protection from that new metal roof you just had installed. A yearly inspection by a roofing contractor and some routine maintenance by you will keep your roof looking good and protecting your home for decades. Here are some of the maintenance tasks you can do to make this the last roof you'll have to put on your home.

1. Keep the roof clean.

This is not just for looks. Anything that keeps water trapped on the roof can be a source of rust. Clean off leaves, sticks, dirt and other debris from the roof as soon as you spot them. These will let water pool on your roof. If the debris is sitting on a place where a metal sheet has become scratched or over a loose or missing screw, rust can start and water may get under the metal sheet. Use a broom and garden hose to clean off the debris. If using a power washer, only use the low setting and angle the nozzle at the roof so you don't damage the roof coating.

2. Keep the gutters in good condition.

Clean the gutters out so they don't clog up and hold water. If the water laps up against the edges of the metal roof, rust can begin. Where the sealer has weakened between the metal sheet and the house, water can seep under the sheet.

Fix any bent or twister gutters quickly. This is especially the case if part of the gutter is touching the metal roof and is made of a different material than the roof. A chemical reaction can occur when dissimilar metals touch, which accelerates corrosion. For example, a galvanized steel gutter touching a copper roof can create corrosion and eventually rust.

3. Tighten loose connectors and replace missing screws.

A screw that is backing out of its hole allows water to travel down the threads and under the sheet. Missing screws provide a way for a lot of water to make its way under the sheet. Check the roof for these problem areas, especially after a storm where winds may have put pressure on the metal sheets and screws.

4. Make sure all flashings are properly sealed.

Every opening in the metal roof will have another metal sheet around it that seals the opening from leaks. Vents, skylights, utility entry points and your fireplace chimney will all have flashings around them. Check that the flashings are secured to the roof and the sealer under and around them is intact. If the sealer has dried out or is missing, force some sealer from a tube or caulking gun under the flashing.

If a large area of sealer is missing or the flashing is damaged, replace or repair the flashing. First, pull up the old flashing. Straighten it out if it can be repaired. Coat the bottom of the flashing with sealer and nail it back into place around the opening. If the flashing is severely damaged, have a roofer replace it with a new metal piece.

5. Have your metal roof re-coated periodically.

The metal coating on your roof keeps it looking nice and protects it from ultraviolet rays from the sun. Constant exposure to the weather thins out the coating. Debris on the roof can scratch and wear down the coating.

To learn more, contact a company that specializes in roofing services by T & N Roofing