Repairing crumbling cement walls is accomplished through a process known as pargeting. Pargeting involves covering the crumbling wall with a layer of plaster. The new plaster layer not only gives the wall a smoother, cleaner appearance, but also serves to prevent water seepage.Continue Reading
Place a plastic sheet at the base of the wall along the crumbling area to catch any loose material or dripping plaster. Use painter's tape to secure the sheet to the wall.
Use a wire brush to remove any crumbling material from the concrete surface. Brush downward with long, overlapping strokes to break away any loose pieces from the wall. The removal of the loose material helps the plaster adhere to the wall.
Create a concrete mix to plaster the wall, using 1 part Portland cement, 3/4 part limestone and 2.5 to 4 parts sand. Mix the plaster materials in a large bucket using a wooden painting stick, adding water to the dry mix until the plaster is the consistency of pancake batter.
Dampen the crumbling wall section with water, and then spread the plaster over the wall with a trowel. If the plaster fails to adhere to the wall, it is too thin and should be remixed using less water.
Place the drip edge under the first row of shingles along the bottom of the roof, and secure the drip edge with roofing cement. Further secure the drip edge with roofing nails at each end if necessary.Full Answer >
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Repair cracked or broken cement roofing tiles by cleaning the crack carefully and filling it with silicone caulk or roofing repair cement. Such repairs are usually easier than replacing the damaged tile. When working on a tile roof, use a foldable extension ladder to reach tiles you cannot reach from a ladder on the ground. Extend the fold of the ladder over the peak of the roof, and use the rungs to distribute your weight to prevent breaking more tiles.Full Answer >
Remove a cement slab by scoring the surface using a saw with a diamond bit and breaking the slab with a jackhammer or large sledgehammer. If the slab is reinforced with steel, you must cut the steel to release the sections.Full Answer >