I have enclosed my back porch or garage and need to bring the new surface level with the interior floor, what product do I use?
Exterior slabs like porches or garage floors, are sloped for drainage and need to be built up and leveled before tile or stone can be applied. First, make sure the existing slab is clean, dry, structurally sound and free from any bond-inhibiting materials. Because of the slope, the new leveling layer will be thicker on the side away from the house or in the area of the original garage opening. Use TexRite La-O-Tex Special 3-1 underlayment to build-up to 1-1/2 with a single lift. Additional lifts can be applied a 24 hour drying period and priming for the second lift. Some garages and especially porches were constructed without a moisture barrier underneath the slab. This can allow excessive moisture flow through the slab that can create moisture and efflorescence problems with a ceramic tile installation if steps are not taken to correct the situation. Slabs without moisture barriers beneath the concrete should be treated with a moisture barrier above the leveling material prior to the
