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| Tile can be laid
over prepared wood, plywood and concrete floors and subfloors, and underlayment . If one room has a wood floor and the
adjacent room is to be tiled, a base or underlayment is placed under
the tile floor to keep it level with the wood floor. Concrete and wood
subfloors are cleaned, smoothed and leveled, and their cracks and holes
are filled, before tile and/or underlayment is applied. Tile is
generally placed over No. 15 or 30 saturated lining felt that is bonded
to the surface of a wood or plywood underlayment. Underlayment panel
joints are staggered and spaced so that a 1/2 mm of expansion width,
the width of a match book cover, lies between each panel. Tile is laid
over the underlayment or subfloor with the joints lying midway
between underlayment or subfloor joints. Underlayment panels
are nailed with coated or ring grooved nails every 100 mm along the edges and face. |
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