Chipboard is made of course sawdust and resin. It’s often used by developers as a sub-flooring material. It’s less expensive than other materials. It’s also referred to as particle board. This type of sub floor is ideal for all types of flooring, including tile, slate, carpet and vinyl. You can buy chipboard that’s treated for termites and fungus. This type is perfect if the home is in a damp location.
Decide what kind of chipboard you'll need. The tongues are colour-coded. Yellow Tongue and Red Tongue are both all-purpose interior flooring designed for fitted flooring or platform construction. Yellow Tongue is 19 mm (3/4 inch) thick and Red Tongue is 22 mm (7/8 inch) thick. Blue Tongue is thicker, at 25 mm (1 inch) and is made for buildings with greater floor loads.
Measure the area of the room you'll be working on. The typical size of a sheet of chipboard flooring is 3,600 mm (12 feet) long and 600 mm or 900 mm (2 or 3 feet) wide. Divide the total area by the size of the board, to determine how many sheets you'll need.
Lay out the chipboard. The edges of the panels are fitted with colour-coded tongues made of PVC. This ensures the sheets will fit together easily and tightly.
Fit the chipboard panels together and nail them down. Use 5 cm (2 inch) ribbed nails to attach the flooring to the joists.
Lay down as many pieces as you can, covering the majority of the floor. Nail them into place.
Measure the remaining chipboard flooring to fit the corners and edges of the floor. Using your saw, cut them to the right size and nail into place.