How To Build An Exterior Wall On Concrete Slab

The bulk of the work for a new slab is in the excavation and form building.

How to build an exterior wall on concrete slab.

Remember to check out the full diy construction video on our website. Use an impact driver to drive a 3 tapcon screw through the wood and into the floor. Learn how to build a low wall from concrete breezeblocks. An exterior wall must be placed on the outside edge of the slab so the exterior siding laps down and over the edge of the slab.

Make sure the braces are level and lay down a barrier of wire mesh over the existing concrete inside of the barrier. Repeat at the other end of the board. Your local building code may call for the wall to be anchored to the slab with threaded rods. To lay new concrete sweep and clean the old concrete and saturate the old concrete with water.

Then build a perimeter or a wood brace that is the same height as you want the concrete to be. If you have to level a sloped site or bring in a lot of fill hire an excavator for a day to help prepare the site. This prevents water from leaking under the bottom of the wall to the inside of the building. Run a chalk snap line between the marks and snap the line against the slab to lay out the position of one of the wall s sides.

Consider a wood shed floor treated lumber joists and plywood. With simple materials and readily available tools the novice carpenter can lay out build and anchor walls on concrete slabs. Width will work with a 2 4 wall on top. Walls are built from the ground up.

Use a hammer drill with 3 16 masonry bit to drill a hole through the wood and into the concrete floor. Cut pressure treated 2 x 4 boards to length and lay them along the chalk line. If this is the case drill through the curb and into the slab with a roto hammer every few feet. Step 1 stretch a tape measure across the concrete slab and mark the position of the wall s ends.

Then figure on spending a day building the forms and another pouring the slab.