How To Clean Brick Fireplace For Painting

How to Deep-Clean a Brick Fireplace Before Painting

Whether you're updating the look of your fireplace or simply want to give it a fresh start, painting brick is a great way to transform its appearance. However, before you start painting, it's essential to thoroughly clean the brick surface to ensure a smooth, even finish.

Step 1: Remove Loose Debris

Start by removing any loose dirt, dust, or cobwebs from the brick using a soft-bristled brush or a vacuum cleaner with a soft brush attachment. Be sure to get into all the nooks and crannies.

Step 2: Wash the Brick

Next, create a cleaning solution by mixing 1 cup of trisodium phosphate (TSP) or heavy-duty cleaner with 4 gallons of warm water. Apply the solution to the brick using a sponge or a soft brush, working in small sections at a time. Allow the solution to sit on the brick for 10-15 minutes, then scrub vigorously with a stiff-bristled brush to remove any remaining dirt or stains.

Step 3: Rinse Thoroughly

Once you've scrubbed the brick, rinse it thoroughly with clean water to remove any cleaning residue. Use a hose with a spray nozzle to get into all the tight spaces, and then allow the brick to air dry completely before proceeding.

Step 4: Remove Efflorescence

If your brick fireplace has efflorescence (white or powdery deposits), you'll need to remove it before painting. Mix equal parts white vinegar and water in a spray bottle and spray the solution onto the affected areas. Let it sit for a few minutes, then scrub with a stiff-bristled brush. Rinse thoroughly with water and allow to dry.

Step 5: Repair Cracks and Holes

Inspect the brick for any cracks or holes. If you find any, repair them using a masonry repair mortar or caulk that is specifically designed for outdoor use. Follow the manufacturer's instructions for application and allow the repair material to cure completely before painting.

Step 6: Protect Surrounding Areas

Before you begin painting, protect the surrounding areas from paint splatters by covering them with drop cloths or plastic sheeting. This includes the floor, walls, and any furniture or fixtures that may be nearby.