Caulk cracks and kill any mold on the walls.
How to re plaster a concrete wall.
Again re plastering is the only cure.
Use a wire brush to clean stains left by the mold or mortar joints.
Before you begin to plaster your concrete walls you need to remove peeling paint and flaking bits of old plaster.
While plaster is best applied over wooden strips the material can also be applied directly to plywood sheets or concrete.
Repair any cracks in the wall before plastering it.
Step 2 apply a layer of dash.
When you re done wipe the wall with a damp cloth to pick up what you loosened with the brush.
Applying plaster to a concrete wall can change its appearance level it make it more moisture resistant and give you the opportunity to add texture.
Your walls should be free of paint oil and dust so the plaster can bond properly.
The wall could be concrete blocks if its an outside wall use sand and cement render as a base coat but only if you have taken all the old plaster off to the block face if it has a cavity you can use hardwall as a base coat if you intend to plaster over old plaster use pva mixed half and half with water and apply with roller to walls ceilings you intend to plaster good few hours before you.
Drylining consists of covering the wall with sheets of plasterboard usually fixed to a framework of battens.
Conventional plastering covered here or drylining which is a very different method.
Prior to application of the basecoat uniformly pre moisten concrete masonry surfaces to aid in curing of the plaster.
Faced with the need to re plaster you have two choices of how to go about the job.
Plaster is a construction material that was used for finishing walls before drywall became widely used.
Prime over stained areas to ensure the plaster will adhere properly.
Use small amounts of plaster and lots of pressure as this will give the smoothest look.
Spread the plaster upwards as evenly as you can.
However avoid saturating the masonry either by excessive spraying or by exposure of uncovered masonry walls or.
Plastering a concrete wall takes time.
Check out our recommended tools right here.
You will have to prepare the wall and allow for curing and drying time between applications of plaster.
Work in small sections starting at the bottom and finish each section before you move onto the next.
Put some plaster on a hawk board which you can buy here and use that to push the plaster onto the wall.