Planter Box Remedial Work
One of the most popular design features in multi-dwelling residential construction is the use of planter boxes around liveable spaces. Unfortunately, the majority of installations in Melbourne are not constructed to comply with AS4654.2; section 2.13 Planter Boxes and, as a result, they fail. All AIW members will have received technical drawing which clarify Australian Standards. One excellent reference is diagram number 023B – PLANTER BOX CONSTRUCTION.
We see so many numerous failures, that planter boxes in good working order are the
exception, not the rule. The photos attached are a recent example in the seaside suburb
of Elwood. This example typiﬁes common errors:
- Construction substrate choice of using block work masonry with very low water tightness
- Poor internal drainage system
- Lack of ventilation to take water out of drains
- No provision for overflow
- Poor choice of plants for root damage to membrane
- Soil fill level too high, with consideration for mulch
- External exposed walls of the planter box not waterproofed to prevent internal wall membrane damage
- Flashings inadequate.
As your material supplier for products to cover a comprehensive multi-defence strategy.
- Planter boxes bordering the balcony over car park ceiling. Photo shows blistered render from water exiting from wall / slab joint. Entrance to building.
- Planter box at opposite end to photo 1 showing same failure at wall / slab joing.