Cut plasterboard linings to fit the soffit and window reveals, and attach them before you apply the boards that line the wall. Align the front edges of the window linings with the faces of the battens or allow for dabs of plaster.

Apply evenly spaced dabs of plaster adhesive to the back of the soffit lining, press it into place (1) and prop it there while the adhesive sets. If the lining bridges a wide span, support it with a wooden board before you prop it. Fit the reveal linings in the same way (2).

Working away from the window, fix the wall linings so that the paper- covered edge of the board laps the cut edge of the reveal lining.

The panels for above and below the window are cut and fitted last. Sand off rough edges of paper and leave a 3mm (I/8in) gap between boards for filling.

Fix wooden furring battens or plasterboard pads close to the corner. Whenever possible, place the cut edges of the plasterboard lining into an internal corner.

Line the reveals and soffits of doorways in exterior walls as described for window openings (see far left).

In the case of interior door openings, screw-fix timber furring battens or bond plasterboard pads level with the edge of the wall, then nail the plasterboard linings in place.

Fit a new door lining (or modify the old one) and cover the joint with an architrave moulding.

Attach furring battens or plasterboard pads as close to the corner as possible. Use screws and wall plugs to fix the battens so as to prevent the corner breaking away. At least one board should have a paper-covered edge, which should lap the other.

Depending on the type of fitting, chase the wall or pack out the mounting box for an electrical switch or socket outlet so that it finishes flush with the face of the plasterboard lining. Screw-fix short lengths of furring batten at each side of the box or use dabs of adhesive.

Cut the opening for the box before fixing the board. If you find it difficult to mark the opening accurately by transferring measurements, remove the fitting from its mounting box and take an impression by placing the board in position and pressing it against the box.

Fix the plasterboard panel in place and replace the electrical fitting.

Cut plasterboard linings to fit the soffit and window reveals, and attach them before you apply the boards that line the wall. Align the front edges of the window linings with the faces of the battens or allow for dabs of plaster.

Apply evenly spaced dabs of plaster adhesive to the back of the soffit lining, press it into place (1) and prop it there while the adhesive sets. If the lining bridges a wide span, support it with a wooden board before you prop it. Fit the reveal linings in the same way (2).

Working away from the window, fix the wall linings so that the paper- covered edge of the board laps the cut edge of the reveal lining.

The panels for above and below the window are cut and fitted last. Sand off rough edges of paper and leave a 3mm (I/8in) gap between boards for filling.

Fix wooden furring battens or plasterboard pads close to the corner. Whenever possible, place the cut edges of the plasterboard lining into an internal corner.

Line the reveals and soffits of doorways in exterior walls as described for window openings (see far left).

In the case of interior door openings, screw-fix timber furring battens or bond plasterboard pads level with the edge of the wall, then nail the plasterboard linings in place.

Fit a new door lining (or modify the old one) and cover the joint with an architrave moulding.

Attach furring battens or plasterboard pads as close to the corner as possible. Use screws and wall plugs to fix the battens so as to prevent the corner breaking away. At least one board should have a paper-covered edge, which should lap the other.

Depending on the type of fitting, chase the wall or pack out the mounting box for an electrical switch or socket outlet so that it finishes flush with the face of the plasterboard lining. Screw-fix short lengths of furring batten at each side of the box or use dabs of adhesive.

Cut the opening for the box before fixing the board. If you find it difficult to mark the opening accurately by transferring measurements, remove the fitting from its mounting box and take an impression by placing the board in position and pressing it against the box.

Fix the plasterboard panel in place and replace the electrical fitting.