Smoothing Concrete Block Walls

Just will not bond well enough even with a bonding agent under it.

Smoothing concrete block walls.

Mix the portland cement in a bucket using an. Allow the area to dry. Pour half of the. Apply a coat of the mixture to your concrete wall before plastering it and allow it to dry for a day.

Place an old screen over a wheelbarrow. Cover landscaping grass or flooring with plastic drop cloths. Tape a one foot by one foot square of plastic sheeting plastic kitchen wrap will do to the concrete wall in your basement with duct tape and leave it in place for 24 hours. Wash down the concrete wall with a pressure washer to get rid of dirt debris and oil stains.

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. To help achieve this you need to make dash by mixing one part cement to 1 1 2 parts coarse sand and add enough water so the mixture has a runny consistency. Do not try to make the wall level. Then remove the tape.

Sand any particularly bad areas of concrete with rough grit sandpaper. Pargeting is the traditional way of covering up concrete blocks. A simple parge coat a thin layer right over the block or concrete like you are talking about will start to peel off in a few years at most if it gets at all wet from sprinkler rain etc. Move any indoor or outdoor furniture away from the wall or cover it with plastic.

Pour about 10 pounds of dry sand on the screen and shake it back and forth to. Scrape the wall with a drywall knife to remove loose cement or grout. Apply the quikwall sbc in the same manner as described earlier. Here is a photo of what commonly happens with a troweled or sprayed on parge coat.

Roll liquid concrete bonding agent over the surface of the wall in fairly straight lines using a short napped. Spray away most debris with water from a garden hose. Clean debris off the wall with water and a sprayer. Trowel a 3 8 inch.

Also try mixing 1 cup 240 ml of a mild dish soap into about 5 us gal 19 000 ml of hot water to scrub off tough stains with a concrete brush. How to smooth a concrete wall finish 1. This material is made of lime sand and water and is essentially the same product as what is put between the blocks when the wall is built. Remove as much debris as possible from the wall so the concrete bonds cleanly to it.

If the silo walls are smooth and nonporous use quikrete concrete acrylic fortifier as part of the mix water.