Wastewater treatment plants - robust surface waterproofing

Key Facts

1 Levelling out voids

Make good small areas of crack damage and defects up to 40 mm with a trowel or lath. Apply ASOCRET-BIS-5/40 “wet in wet“ over an ASOCRET-HS-Flex slurry bonding coat.

2 Evening out surfaces

Apply ASOCRET-BIS-1/6 on to the prepared substrate at the desired thickness – up to 6 mm in one application. Do not post-treat the surface with a wet brush or steel float. For a smooth transition it is possible to rub down the repaired surface with a sponge.

3 Waterproofing wall-floor junctions

At the transition between wall and floor as well as over connecting joints, brush or trowel apply AQUAFIN-2K/M-PLUS and bond the waterproof tape ASO-Joint-Tape-2000-S without voids or folds. Completely cover over with the surface membrane.

4 Transition to flange construction

At the flange construction, apply the special primer ASODUR-SG3-thix by brush or roller over the abraded flange. Once hardened, roller apply a second coat of ASODUR-SG3-thix and broadcast 0.5 - 1.0 mm quartz sand into the surface whilst it is still wet.

5 Quartz sand

Once hardened, apply the second coat of ASODUR-SG3-thix by roller and whilst the primer is still wet, broadcast with 0.5 - 1.0 mm quartz sand.

6 Waterproofing all areas

Apply a minimum of two coats of AQUAFIN-2K/M-PLUS by spray, brush or trowel.