PAL


Most New Zealand roofs are made of either galvanised iron or Zincalume. The method and tools for painting either is the same. But there’ll be a few differences when painting a new roof, an older/weathered roof and a previously painted roof. Cleaning & Preparing New Galvanised/Zincalume Roofs Wash the roof using a roof wash and paint cleaner. Be sure to wash spouting too. Then rinse these products off thoroughly. Apply an appropriate primer. Ask your paint store salesperson for advice if you live near the water as you’ll need a special primer to deal with salt. You’ll also need to wash away salt build-up after your first coat of primer, before applying a second coat. Older/Weathered Roofs (Unpainted) Wash the roof using a roof wash and paint cleaner. Be sure to wash spouting too. Then rinse these products off thoroughly. Strip back old flaking layers of paint. Brush with a Masterflow® wire brush for corrugated roofs or a standard Masterflow® wire brush. Spot prime any bare areas and treat rusty spots with a rust remover. Apply an appropriate primer. Again, ask your paint store salesperson for advice if you live near the water as you’ll need a special primer and will need to apply two coats. Previously Painted Roofs Apply a moss and mould killer and leave on for up to 2 days. You may need to repeat this process if the moss or mould is really stubborn. Scrape to remove lichen with a Masterflow® Burn off scraper. Then wash or water blast the roof using a roof wash and paint cleaner. Give it a good scrub down with a Masterflow® Wire Brush for corrugated roofs or a standard Masterflow® wire brush for non-corrugated roofs. Spot prime any bare areas and treat rusty spots with a rust remover. Apply an appropriate primer. Again, ask your paint store salesperson for advice if you live near the water as you’ll need a special primer and will need to apply two coats. Painting Type Of Paint The best paint to use on roofs is a special galvanised water-based roof paint. A lot of these have UV resistant pigments and tough polymers, so they’re designed to wear the exposure to sun and rain. You’ll usually need 2 coats, but this type of paint is fast-drying. Best applicators for the job: If your roof is corrugated, make your job easier with a ROOF Master ® Corrugated Roller Kit. Use the PAL® Legend brush if you’re painting a longrun or trough section roof. For any other type of roof, try PAL®’s ROOF Master® brush. It’s made of hog bristle and has pre-finished bristle tips. That means it’ll work the paint in almost from the first stroke. If using any other kind of roller, an extension handle will make the job easier overall. Handy Hints If you’re painting several exterior sections of your home, always start with the roof. Then move onto eaves, then walls, then windows and then doors. Keep in mind that painting roofs ruins the quality of your brush. You’ll need another set of brushes for your other exterior projects. Paint the ridge, hip and valley flashings with a brush. Then you can fill in the larger areas with a roller. Check how the paint looks around nail and screw heads. If it needs touching up, use a brush.