Planters or containers that are installed on the slab require waterproofing at two locations. Waterproofing at the exterior or underside of the container should be applied in a continuous fashion over the slab. The container is then set over the waterproofing.
Waterproofing at the interior of the container is completed as a typical horizontal waterproofing application. The waterproofing is applied directly to the interior container substrate. Application is completed at all interior vertical and horizontal substrates so that the container is completely lined with waterproofing. A protection board or lead liner is applied to protect the waterproofing from interior fillers including soil and plants. Planters installed in temperate weather zones require the installation of insulation to avoid false plant or tree blooming in winter months.