If the paint is old it may be lead based.
Painting exterior concrete basement walls.
Select paint appropriate for your outdoor project.
How to paint concrete block basement walls step 1.
Clean the concrete wall.
Allow it to dry for four hours or for the time indicated on the sealer.
Making over a basement wall oftentimes requires a little more work than a standard interior wall.
Most importantly you ll need to check that your walls are waterproof before heading to the paint store.
You can check by purchasing a lead paint test kit online or at a home center.
Concrete is porous and it is not unusual for basement walls to absorb water from the ground and pass it into the house.
Painting your basement with a quality paint can help control some of the seepage.
Locate any sources of moisture and correct the problem before starting your paint job.
When you set out to paint concrete the process.
You may also use a pressure hose to.
Exterior house paint can crack and peel on concrete.
Masonry paint 20 per gallon can be tinted and is much thicker than exterior paint.
This can include ensuring.
Choose paint for your project.
All it takes is time and some very careful preparation.
Repair any cracks or blemishes in your wall with concrete patch.
With proper preparation painting surfaces like these can be simple and the end result will be worth the effort.
Apply it with a masonry brush 5 to 8 a high capacity 3 4 inch or higher roller or a texture roller 5 50.
Patch gouged or otherwise damaged areas with concrete filler.
Masonry paint also called elastomeric paint or elastomeric wall coating is a good choice for concrete painting because it contains binders that contract and expand with the concrete.
Using a solution of trisodium phosphate tsp and warm water clean the.
You will need a paint that is.
For exterior projects use a power washer to rid the wall of all dirt and dust.
Remove any mildew with a mildew remover following the product instructions.
Paint the entire wall with a thin coat of a concrete sealer or concrete primer.
Step 1 clean the surface as with most painting projects preparation is the biggest key to your success.
Some masonry paint is thicker than exterior paint and.
Assess the condition of the walls.
If there is a previous coat of paint you ll need to remove it if you want to repaint with concrete paint because concrete paint needs to adhere to a porous surface.
Clean the concrete surface with tsp.
Apply an even coat with a wide paintbrush.