From the plywood, cut a piece 600mm high x 596mm (the width of the panel) for the back wall, three 582mm-wide x 300mm-deep floors, and four 400mm high x 300mm wide pieces for the sides and doors. Along the 596mm width of the plywood, measure up 200mm and mark the centre to cut a triangle for the roof front. Save the offcuts to make the internal walls.
Position the roof front at the top of the back piece as a template to mark out the top of the triangle, then cut with a handsaw. Smooth over all the pieces with 180-grit abrasive paper, removing any breakout from along the cuts, wiping away dust with a cloth.
To assemble, use set squares with clamps to stand the side pieces up, run adhesive along the back edges, then position the back piece and secure with bullethead nails at 100mm intervals.
Tips: Tap the nails 20mm in from the ends to avoid splitting the timber, pulling the plywood into position as you go. When working with PVA adhesive, have a clean damp cloth on hand to wipe away excess as you go, to avoid drips and smudges.
To install the base and rooftop floor, apply adhesive around the back and side edges, positioning them inside and flush with the end of the walls, securing from outside with nails.
Tip: Trim self-adhesive film to size with a utility knife and cover the floors before installing.
Install the middle floor by marking 200mm up the inside and outside of the walls. Apply adhesive around the back and side edges, tap into position and secure from the outside with nails.
Tip: Stick wallpaper onto the back wall before adding the floor.
Make the internal walls from the plywood offcuts, cutting two 250mm x 193mm pieces, sliding them onto the ground floor and middle floor.
Tip: If they don't wedge snugly, apply adhesive to the top, back and base, slide into position, clamp and leave to dry.
To hang the doors, position them flush with the top floor. Mark 10mm in from the edges to position hinges at the top and base, using a screwdriver to secure with 6mm screws. Use 6mm screws to install a magnetic catch to the under-side of the middle floor, with the supplied magnets positioned on the inside of the doors.
Clamp the roof front to a stable surface, mark centre and 72.5mm up from the base and use a 92mm hole saw to drill the round window. Position the roof front against the back wall, clamp, mark centre and 22mm down from the point and use a 22mm hole saw to drill both rafter holes. Sand smooth.
Apply adhesive around the rafter holes and along the base of the roof front. Position the dowel in the holes and angle the base of the roof front to sit on the top floor, flush with the front. Clamp, secure with nails up through the rooftop floor, then leave to dry.
Ladder: Make a ladder from 12 pieces of 8mm dowel cut to 50mm long. Drill holes either end with a 2mm bit. Thread 3mm macramé cord through one end of each, add an eye hook then thread back through the opposite side. Space the rungs 30mm apart, dab with adhesive, knot the ends and leave to dry. Twist the eye hook into the underside of the top floor.
Swing: On a plywood offcut of 40mm x 70mm, drill 2mm holes in the corners. Thread macramé cord through holes and over the dowel rafter, then knot the ends.
Surfboards: Cut surfboard shapes from 5mm balsa wood, smooth the edges with abrasive paper and apply two coats of paint with a flat craft brush.
Asbestos, lead-based paints and copper chromium arsenic (CCA) treated timber are health hazards you need to look out for when renovating older homes. These substances can easily be disturbed when renovating and exposure to them can cause a range of life-threatening diseases and conditions including cancer. For information on the dangers of asbestos, lead-based paint and CCA treated timber and tips for dealing with these materials contact your local council's Environmental Health Officer or visit our Health & Safety page.
When following our advice in our D.I.Y. videos, make sure you use all equipment, including PPE, safely by following the manufacturer’s instructions. Check that the equipment is suitable for the task and that PPE fits properly. If you are unsure, hire an expert to do the job or talk to a Bunnings Team Member.