Compared to other surfaces, concrete requires a more delicate painting procedure because it has openings, it moves moisture, and it imbibes paint.
You need only 1-2 days to paint a drywall but you may have to clear a week to complete a concrete painting project. I’ve collected tips from house painters Melbourne to help you get through the project with minimal exasperation.
1.Start by Cleaning the Concrete
Get rid of the grease, dirt and debris so paint can adhere well to the surface. Remember that concrete has a porous surface which can make the cleaning process tedious.
You may use trisodium phosphate or a commercially-prepared pre-paint cleaner to do this.
Pull out all the plants that have grown around the foundation. Then, finish off the residual dirt, leaves, roots and stalks using a pressure washer.
A coat of white power can form on the surface due to the movement of salt through the porous structure. Try removing it using phosphoric acid masonry cleaner.
2.Strip Off the Old Paint
You can peel or blister paint using a paint scraper or a wire plus, with the help of elbow grease.
For outdoor projects, consider renting a power washer.
3.Seal the Concrete
The pores of concrete allow water to seep into it which can encourage mould growth. Prevent the dampness by applying a masonry sealer on the surfaces particularly on cracks.
Follow the manufacturer instructions carefully. Never take a shortcut and always prepare proper gear.
4.Prime it Down
Look for a primer clearly marked for concrete applications. This is called a “block primer” which covers openings and levels out your concrete. Make sure to use exterior and interior-grade block fillers accordingly. Generally, they take only 2 hours to dry out. Give it at least 8 hours before painting, but don’t wait further than 30 days.
5.Pick the Right Paint
Concrete experiences contraction and expansion so house painters recommend masonry paint for this project. Also called elastomeric wall coating, it contains more binders that can prevent cracking and peeling.
For a polished outcome, capitalize on a high-capacity roller and a high-quality masonry brush. If you want to spray paint, ask the local hardware for a masonry paint that works well with a sprayer.
Give each coat at least a day to dry before applying another. If you’re not ready for the demands of concrete painting, better hire a professional painter to do it.