Painting Old Tin Roof

Terne tin is a little trickier to determine.

Painting old tin roof.

Whether your roof has been painted previously or not powerwash just before you start painting. The first incarnation of the tin roof was a sheet of steel with a tin coating on the surface to prevent oxidization. Sand the entire metal roof surface very lightly with your wire brush or sandpaper. Not using a sealant.

Black jack elasto kool 1000 5 gallon elastomeric reflective roof coating 10 year limited warranty item 139941. If you re planning to paint a brand new raw tin roof you don t need to do much preparation work. You ll also need to purchase a primer designed for metal roofs. 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.

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. If you re not sure what kind of roof you have ask a professional roofer to inspect it before you paint it. Black jack silver seal 300 4 75 gallon aluminum reflective roof coating 3 year limited warranty item 12035. Try to achieve a slightly abraded texturized finish as this helps your new paint bond with the roof finish.

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. Another mistake is to forget or ignore using a sealant before the application of the metal paint. This step removes mildew dirt and any loose bits of old paint that can cause adhesion problems. Water resistant metal roofing paint for example can be of great value if you live in a rainy area.

The term tin is a misnomer in this situation. Generally a tin roof is referring to one of two things. For pricing and availability. It is very rare to find an actual tin roof.

If you have a terne metal roof like this one then it has probably been repainted several times over the years. Be extremely careful not to pierce the metal when scraping. Make sure to use a putty knife to scrape and scratch away all loose pealing paint.