You can also use a hose to spray water over your wall after about 10 minutes, which will help even out all of your textures on top of each other. Wait until it is completely dry before adding another layer of concrete, but don’t wait too long: if you let the cement sit for too long, it will dry into an uneven surface and make it difficult to level again. Use a trowel to smooth and level out the wet cement as soon as you are done laying it down. If necessary, add more until every part is covered and level with one another (or even slightly higher). Once enough cement has been added to cover most of your molding surface, check that level with a ruler or straight edge. Add it from the bottom up, so that it fills in any gaps at the bottom of your molds. Add the cement slowly and carefully in order to avoid making any messes. When you’re ready to pour the cement onto the molding surface, use a long-handled shovel or trowel. Pour the cement onto the molding surface. You also don’t want any debris or moisture on this surface since these things could cause irregularities in how your block molds turn out. You’ll want to make sure that the surface is flat and large enough for the size of your block molds.Ī level surface will help ensure that all of your blocks come out uniform in size, so it’s important to use a board or plank that’s cut from lumber that has been flattened by being sanded or planed down to be perfectly flat. Prepare the molding surface.īefore you can make your retaining wall blocks, you need to prepare the molding surface. If you have access to one of these types of floors, great! But if not then don’t worry we’ll be working with a garage floor that has been recently installed in this tutorial video: …. Ideally, you will use a concrete slab as your mold making platform, but any other type of solid flooring is acceptable, including wood surfaces such as unfinished or sealed concrete floors or tile floors (just make sure to check with the manufacturer’s instructions for applying sealer prior to pouring). You will need to work on a smooth, level surface for this project. Wood glue or another adhesive (if mixing concrete by hand).You may also want some extra materials on hand:.Be sure that this material can withstand prolonged exposure to moisture such as rain or snow melt during construction season!
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