Guide the scribing tool along the floor to transfer its unevenness onto the second rail.Draw a short reference line onto the second rail, then widen the legs of the scribing tool to span from the floor up to the reference mark.Shim the second rail level with the first, then adjust the scribing tool to the height of the second rail.Fasten the rail to the slab with masonry nails, then lay a second 2×4 rail across the floor, setting one end on top of the first rail.It’s important to pre-bore these holes to avoid splitting the rail. Bore pilot holes through the rail and into the concrete using a hammer drill fitted with a carbide-tipped masonry bit.Press the scribed rail into the slab and secure it with construction adhesive.Set the scribed 2×4 rail back into position on the floor and check to see if it’s level.Next, cut the rail along the scribed line with a circular saw.Match the scribe bottom to the surface of the floor this will allow you to trace the uneven contour of the slab.Slip shims under the low end of the 2×4 rail until it’s perfectly level, then use a scribing tool to transfer the unevenness of the floor onto the rail.To resurface an uneven concrete slab, begin by laying a long, straight, 2×4 wooden rail across the concrete-slab floor, with one end positioned on the high point in the room.Step-by-Step Instructions for Leveling a Concrete Floor Before you pour, give the existing slab a thorough cleaning with a degreaser to remove any contaminants that might interfere with achieving a strong bond. The only places you’ll lose any appreciable headroom will be in the slab’s low spots.įor basements, you should use a compound that contains Portland cement rather than gypsum because it won’t be affected by moisture. The material flows out like thick syrup, then hardens into a smooth, perfectly level surface, sometimes in less than an hour. The easiest way is to use a self-leveling compound, also called liquid floor underlayment or floor resurfacer, within sections of level-cut rails. Happily enough, leveling uneven concrete slabs has an easy fix that won’t sacrifice your headroom. If you have any questions regarding the way Fosroc ANZ handles your personal information or wish to seek access to, or correct, personal information we hold about you, please contact our Privacy Officer via call +61 3 9263 5678.The first step to making the most of any basement is to achieve a level floor. It contains further details about: (i) the personal information we collect (ii) what we do with it (iii) where we send it (iv) how you can access and correct it (v) how you can lodge a privacy complaint regarding the handling of your personal information (vi) how we handle those complaints (vii) online privacy and (viii) the types of service providers we use. Please refer to our Privacy Policy, available on our websites, or on request. We may also exchange your personal information with other related companies and our service providers, such as delivery companies and technology providers. If you do not provide the personal information requested, we will not be able to fulfill your request. Fosroc ANZ may disclose the information to contractors, market research organisations, marketing and communications agencies and related bodies corporate for this purpose. Fosroc ANZ (and its marketing and communications agencies on its behalf) may also use your name and contact details to send you information for these purposes. Your privacy is important to us: Fosroc ANZ will use the information you submit and may disclose it to third parties to respond to your enquiry. Fosroc (“Fosroc ANZ”) is sold under license in Australia and New Zealand by Parchem Construction Supplies Pty Ltd, a wholly owned subsidiary of DuluxGroup Limited (ABN 133 404 065).
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