Bostik Self Leveling Cement 50LB
Bostik SL-150 is a high compressive strength, selfleveling, cement-based underlayment used to repair, smooth and level concrete as well as existing ceramic,terrazzo or approved plywood subfloors prior to the installation of carpet, vinyl, VCT, laminate, solid and
engineered hardwood flooring,ceramic or natural stone.
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Q:can I use this to level a low spot in a wood sub floor before nailing down a solid hardwood floor
A:No. Subfloor for solid hardwood or naildown engineered needs to be within 3/16" in 10’ or 1/8" in 6' variance. Options are Sand high areas or joints, use wood shims wedged between joists and the subfloor to raise it. Protruding nails/staples should be ground flat. Build-up low spots with layers of 15 lb builders felt, old vinyl, plywood or shims (do not use cement leveling compounds).