Parge is a thin coat of mortar applied over the top of vertical concrete to fill surface voids, fissures and small holes. It is intended to refine the look of the concrete, prevent outgassing and improve the overall appearance of the surface. If you apply paint directly over bare parge, poor adhesion will inevitably lead to finish failure in the form of chipping. To promote good coverage and long-term durability, condition the parge with a base primer. Use the proper application tools that will promote better coverage without leaving skip marks throughout the finish.
Things You'll Need
- Pressure washer
- Canvas dropcloths
- Latex primer
- Acrylic primer
- Roller frame
- Roller extension pole
- 1 3/4-inch nap roller cover
- 3-inch nylon paintbrush
- 1-inch nap roller cover
- Latex paint
- Exterior acrylic paint
Wash exterior parge, using a pressure washer; dust interior parge with a broom. Let exterior parge dry for at least two hours.
Position canvas dropcloths beneath the parge.
Coat exterior parge with acrylic primer, using a roller. Add latex primer to interior parge. Equip the roller with a 1 3/4-inch nap roller cover. Roll vertically, moving from the left side of the vertical concrete surface to the right side. Touch up the parge, using a nylon paintbrush. Don't use a polyester brush which is better suited for slick surfaces. Let the parge dry for two hours.
Wash the nylon brush and roller three times, using clean tap water.
Paint the parge just as you primed it. Add two coats, waiting two hours between each coat. Use a 1-inch nap cover to prevent runs. Let the finished parge dry for two hours.
Tips & Warnings
- Use latex paint on interior parge and an exterior acrylic paint when finishing exterior parge. Don't use latex paint on exterior parge; ultraviolet sunlight will cause the finish to fade.
- Be sure to thoroughly clean the parge to prevent tiny dust particles from leading to poor adhesion.
How to Remove Latex Paint from Carpet
That "oops" you heard during that painting project in the other room is bad news - latex paint can ruin a carpet....
How to Paint a Room
Painting your walls can transform the look and feel of your home. You can make a small room look substantially bigger by...
How to Paint the Exterior of a House
If you want to paint your home's exterior, plan to spend as much time prepping as you do painting, and use the...
How to Paint Treated Wood
Pressure-treated wood is made using a high pressure process, which forces various inorganic preservatives deep into the core of the wood. This...
- How to Paint Parking Lot Lines
How to Remove Acid Rain Spots From the Exterior Paint of a Black Car
From the Batmobile to the Bandit car, no auto color looks sleeker, smoother or shinier than black. Unfortunately, coolness comes at a...
How to Parge a Basement
Parging is applying a thin coat of a special, sticky cement over the foundation walls of a basement. Parging a wall can...
How to Mix a Parge Coating
Masons use a parge coat to cover walls made of concrete, brick or block. A parge coat is a smooth coat of...