Painting Old Tin Roof

If you re not sure what kind of roof you have ask a professional roofer to inspect it before you paint it.

Painting old tin roof.

This step removes mildew dirt and any loose bits of old paint that can cause adhesion problems. If you have a terne metal roof like this one then it has probably been repainted several times over the years. You ll also need to purchase a primer designed for metal roofs. Not using a sealant.

Another mistake is to forget or ignore using a sealant before the application of the metal paint. It is very rare to find an actual tin roof. Sand the entire metal roof surface very lightly with your wire brush or sandpaper. Make sure to use a putty knife to scrape and scratch away all loose pealing paint.

The first incarnation of the tin roof was a sheet of steel with a tin coating on the surface to prevent oxidization. Try to achieve a slightly abraded texturized finish as this helps your new paint bond with the roof finish. Whether your roof has been painted previously or not powerwash just before you start painting. Generally a tin roof is referring to one of two things.

Just before painting wash the roof with a power washer at a pressure of 2 500 pounds per square inch whether it is a new or an old one that requires re painting. This is why when you are considering painting your metal roofing it makes sense to go for specific paints for the metal roof. For pricing and availability. If you re planning to paint a brand new raw tin roof you don t need to do much preparation work.

Water resistant metal roofing paint for example can be of great value if you live in a rainy area. If you want to paint a new metal roof though you can prepare it by washing with a weak acid such as diluted vinegar to remove oils and residue first. To paint a metal roof you ll need to use an oil based paint if you have a terne metal roof or an acrylic based paint if you have a galvanized metal roof. The term tin is a misnomer in this situation.

Terne tin is a little trickier to determine. Be extremely careful not to pierce the metal when scraping. Black jack silver seal 300 4 75 gallon aluminum reflective roof coating 3 year limited warranty item 12035.