Tapered Angle Frame
The Tapered Angle Frame can be used in either new construction or renovation projects. The frame can be set on the concrete substrate and fastened with tape or screws. Mounting the frame using this method requires the mat to be surrounded by tile, terrazzo or other hard surface material. Another method is to recess the frame in the concrete floor using a block out (see block out definition below). Whichever method is chosen, it is import that the substrate be smooth and without defects for proper mat installation.
The block out is made of lumber prior to the concrete floor pour. The exact measurement of the mat/grid and its frame must be calculated and the lumber dimensions added to the outer dimensions.
At the time of installation of the mat/grid the lumber is removed and the frame is installed. After the frame has been installed there will be a gap in the block out area. The gap should be filled with a non-shrinking grout.