Gather your supplies
- 100 x 15 x 1800mm H3 treated pine palings (6)
- 70 x 35 x 1200mm H3 treated pine batten
- Construction adhesive; 25mm galvanised screws
- Masonry drill bit
- Speedbor or spade bit
- Non-toxic pond sealer
- Fine-grit sandpaper
- Concrete screws
- DynaBolt
- Geo-textile fabric
- Potting mix
- Plants
Note: Box measures 1800 (L) x 130 (W) x 200mm (H). Consider strength of wall, as potting mix adds weight.
Here’s how
Step 1
To make front and back panels, lay 2 palings side-by-side. On a separate paling, measure eight 100mm intervals and cut into blocks.
Step 2
Mark 15mm in from both ends of front panel. Position 1 block on each marking to sit evenly over top and bottom palings. Evenly space 2 blocks in between these blocks. Glue all blocks down and screw to palings. Repeat to make back panel.
Step 3
To make end panels, measure 185mm and 370mm along trimmed paling and cut. Clamp sides and ends and screw together.
Step 4
Position remaining paling on top and screw into place. Using Speedbor bit, drill drainage holes into paling.
Step 5
Screw offcut (slightly shorter than box height) in centre for added strength.
Step 6
Coat interior with non-toxic pond sealer. Sand exterior. Cut ends of batten at a 45° angle.
Step 7
On wall, measure and mark where base of box will rest. Drill evenly spaced clearance holes into batten. Using central hole as a guide, drill into brickwork. Insert concrete screw slightly loose, level batten, bore holes and insert other screws.
Step 8
Drill 4 evenly spaced clearance holes in back of box. Position box, mark holes on wall, remove box, then drill through wall. Secure box to wall with DynaBolt.
Step 9
Drive screws through bottom of box into batten. Line box with fabric. Fill with potting mix and plant up with a selection of plants.
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