Water Tanks & Swimming Pools
Terraco has a wide range of waterproofing products that are ideal for structures that store standing water and in few cases, potable water. Below are the products ideal for waterproofing swimming pools and water tanks.
Products for Water Tanks & Swimming Pools
Weathercoat GP
Weathercoat GP is a high quality, versatile, permanent waterproofing system for roofs, facades, wet rooms and water retaining structures.
Ultracrete
Ultracrete is a two component, flexible, positive-negative pressure waterproofer
Pluggit 311
Cement based rapid setting water-stop mortar
Terrabond A
Highly concentrated acrylic bonding agent
P Primer Clear
General purpose clear acrylic penetrating primer
P Primer Pigmented
General purpose pigmented primer suitable for tinting to match the finish colour
Installation guide: How to waterproof a bathroom before tiling
A wet-area waterproofing procedure covering falls, fillets, corner tape, two-coat membrane application and flood testing before tiles go down.
- Typical duration
- 4D
- Tools
- Angle grinder or scabbler for laitance removal, Block brush and 4 mm notched trowel, Spirit level or laser for fall check, Bucket, paddle mixer
- Materials
- Cementitious or flexible waterproof membrane (e.g. Terraseal), Reinforcing tape for corners and junctions, Polymer bonding primer, Non-shrink repair mortar for fillets
- 1
Strip and inspect
Remove old finishes back to sound screed or concrete. Check for cracks, honeycombing and loose sand-cement. Confirm all plumbing rough-in is complete and pressure tested — no penetration may be cut after waterproofing.
- 2
Correct the falls
Verify a minimum 1:100 fall towards the floor waste, and 1:80 inside a shower area. Re-screed flat or ponding areas; a membrane cannot compensate for standing water.
- 3
Form fillets and repair
Cut out cracks, fill with repair mortar, and form a 25 mm cove fillet at every wall-floor junction so the membrane is never asked to turn a sharp 90° angle.
- 4
Prime the substrate
Dampen or prime per the membrane data sheet. Cementitious membranes usually need a saturated surface-dry substrate; acrylic ones need a fully dry, primed one.
- 5
Band the movement points
Bed reinforcing tape into a wet first pass of membrane at all internal corners, wall-floor junctions, drain flanges and pipe penetrations. This detail is where nearly all wet-area leaks begin.
- 6
Apply two coats
Brush the first coat over the full floor and up walls to 1.8 m in showers and 150 mm elsewhere. Once touch-dry, apply the second coat at right angles to the first to eliminate pinholes. Respect the total wet film thickness in the data sheet.
- 7
Flood test
After full cure, plug the drain, flood the floor to 25 mm and hold for 24 hours. Check the ceiling and walls below. Only a passed flood test releases the area for tiling.
- 8
Tile with a compatible adhesive
Use a polymer-modified C2 adhesive over the membrane. Never mechanically fix through the membrane; if a fixing is unavoidable, seal it with membrane and tape.