Preformed Concrete Plank or Sections

Subfloors & Underlayments

Preformed Concrete Plank or Sections

Because of the joints between the sections, this type of subfloor requires finishing with a concrete topping before flooring is installed. The topping prevents the finished floor from cracking or loosening from the subfloor due to movement of the concrete. Trowelable underlayments are not satisfactory for smoothing preformed concrete subfloors. Concrete toppings on precast concrete must be tested for moisture as for ordinary concrete floor slabs.

Updated on August 16, 2022