Actual costs will depend on job size, conditions, and options. Water seeps through the walls and results in mold and rust. . Fill a 5-gallon bucket halfway with water and add skim-coat cement mix. How to Use Thinset Morter to Resurface Concrete. Fill in any cracks and gaps with concrete resurfacer. I have a stone basement in Wisconsin. With multiple uses, the … This method is best suited for walls that are in very good condition and DO NOT need to be patched or repaired extensively. This highly flexible can be used to damp-proof existing block walls, as a scratch and brown or parge coat, or to build block walls without mortar joints – saving labor compared to traditional masonry construction. This process is a good way to prepare a cracked and uneven cement wall for painting or other finishing. Hunker may earn compensation through affiliate links in this story. They can be applied in layers as thin as 20 mils (a mere 0.02 inch), or you can apply several coats to create a textured broomed or troweled finish. Discussion Starter • #1 • Jul 13, 2013. Thin the concrete mix with water to a pancake-batter consistency and skim coat the walls. I have a float and a sponge. The skills involved in actually applying the cement can be practiced on scrap plywood, if desired. Lay plastic drop cloths on the floor to protect it from the skim-coating process. Apply a thick enough coat to cover the surface with an even coat of cement. Pour small portions of … Start with proper surface preparation and move on to creating a durable, attra… We’re working on renovating our basement to turn it into a studio space for me to work in. What Ornamental Grasses Will Soften the Look of a Cement Wall? Skim-coating or resurfacing concrete patios, walkways, driveways, walls and stairs not only renews their appearance, but it extends their lifespan by improving drainage and waterproofing. Spread the cement on the wall in in upward motion, then finish with a circular motion over the same area. 253 Posts . Is the paint causing the blistering? When relining silos, it is very important that the walls be troweled extra smooth to minimize the occurance of small pockets where future acid crusting could originate. I have an old foundation and the appearance on the inside isn't very attractive. I’ve been scraping the loose concrete (sometimes going as much as ¼ of an inch deep) and skim coating with mortar or thin set, but then the blistering migrates to the perimeter of the repaired area. 3. Below are some tips on how to repair drywall and skim coat a wall quickly and efficiently. Use the trowel to scoop cement out of the bucket and onto the trowel. Hello, this is my first time posting on this forum so please excuse my learning curve. Much of the coating has flaked off, exposing the mortar joints, which are disintegrating. You'll spend a fraction of the time and have a much better resulting look than trying to skim coat the entire wall and hoping for good adhesion. Remove excess cement with the edge of the trowel, using a scraping motion. Move any indoor or outdoor furniture away from the wall or cover it with plastic sheeting if it must remain near the wall. Apply 1/8 to 1/2 inch of cement, or enough to cover the grout. Cover any items such as furniture that will remain in the room during the skim-coating. You can use hydraulic cement to prevent such issues, as it is a water-resistant product. Skim coating a wall yourself is relatively easy to do and significantly cheaper than paying someone else to do it. First, we have to find out specifically where it is leaking from. He now writes for the web as well. 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