Although archways can be erected in the garden quickly and easily using a metal arch kit, you may prefer to build something a little more study.

Method

Gather your timber together; the four uprights should be at least 10x10 cm, whilst the overhead supports (2 crossbeams to go across the path and 4 rafters to run alongside) need only be 10x5 cm. Make sure the crossbeams are long enough to allow for a 20 cm overhang on each side of the supports.

Mark out where you want to place the upright posts using pegs and string, checking any right angles with a builder's square.

Dig a hole for the first post - this must be deep enough for about a quarter of the post to be underground. Fill the base of the hole with a 15 cm (6 in) base of hardcore, then stand the post in the hole and pack it round with more hardcore to hold it in position. Pour in concrete and tamp down. Check that it is upright with a spirit level, and then leave to set for a couple of days before fixing the crossbeams.

Alternatively, you can use metal post supports sunk into the ground, and insert the wooden posts into them. This will reduce the length of the wood needed for archway posts and keeps them out of contact with the soil, thus prolonging the life of the wood. Use a sledgehammer to drive the metal support directly into the ground, periodically checking it is level. Insert the post into the socket at the top of the support and secure it by tightening the clamping bolts or fixing it with nails or screws through the slatted holes. For added strength, metal post supports may also be set in a foundation of hardcore and concrete.

Saw the ends of the crossbeams and rafters so that they will produce an angled overhang. The crossbeams will be placed alongside the uprights, then the rafters will be placed over the crossbeams at right angles, joined together in a square using notches.

Lay the crossbeams and rafters on the ground, positioning them so that you can mark and cut notches in the top of the crossbeams and the bottom of rafters, allowing them to be fitted together.

Get some help to lift the crossbeams up to the top of the posts and position them so there is an equal overhang at each end. Use T-shaped metal brackets and screws to secure the crossbeams to the inside of the uprights. Set the rafters over the crossbeams, the notched joints will hold them in place, but you can fasten them more securely with nails.

Paint the structure with at least two layers of garden woodstain, which will provide an attractive surface and protect the wood from surface moulds and algae. When the wood is dry, fix supporting wires to the uprights and crossbeams using screw-in vine-eyes.

Plant the climbers on the outside of the archway, approximately 20-30 cm (8-12 in) away from the uprights. Guide and train the young stems to the wires.