What To Do If You Spot Rust On Your Metal Roof

Posted on: 5 February 2015

Metal roofs are great choices for many homes because they're remarkably durable and excellent for keeping even the harshest elements outdoors where they belong. Most of today's modern roofs are made from rust-resistant alloys and coated in anti-rusting agents. However, your roof may develop rust if there was a flaw in manufacturing, it was not coated properly, or if it was made before rust-proofing was a primary concern among roof manufacturers.

If you spot rust on your metal roof, follow these steps:

Step 1: Look into your roof's warranty.

If your roof is rather new, the damage may be under warranty. Roofing companies often guarantee that their roofs will not rust for 10 or 20 years, and they will cover the cost of repairing the damage of replacing the rusted portion of the roof if rust appears during this time frame. Of course, if your roof is in the 30 or 40-year old range, you can assume the damage is probably not covered under warranty.

Step 2: Examine the extent of the rust.

Only carry out this step if you feel safe and comfortable climbing up a ladder and possibly even onto the roof. Make sure you have a family member or friend there with you, in case of emergency. Examine the extent of the rust. Is it just a small spot, or is a large section beginning to rust out? Make note of the location and extent of the damage.

Step 3: Attempt to fix a small patch of rust by yourself.

If the rust patch is small and your roof is not under warranty, you might be able to fix it yourself. Use steel wool to buff away all of the rust. Then, apply a rust-retardant primer, followed by a coat of metal roof paint that contains rust inhibitors. This will stop the rust for now, but you will probably want to contact a roofing company and have your whole roof treated with an anti-rust coating. If one spot of rust has appeared, you can bet that other ones will soon appear if you don't take action.

Step 4: Call a roofing company for extensive damage.

If your roof is under warranty, call your roofing company, such as Advanced Seamless Gutter & Roofing Inc., even for small rust patches, since the cost of repairs should be covered. Also call your roofing company if the rust spot is larger than you hand, or if the rust has begun to eat away at the roofing panels. In this case, the roofing panel may need to be replaced rather than repaired, and that's a task best left to the professionals.

Metal roofs typically require much less maintenance than asphalt roofs, but you should keep an eye out for rust spots. If they do appear, taking care of them promptly is important, since rust spreads quickly.