Waterproofing Suspended Concrete Slab

Waterproofing Suspended Concrete Slab with Drizoro

When the Suspended Concrete Slab is the inside – Bottom of the ROOF

The video shows how we were waterproofing suspended concrete slab with Drizoro Maxrest, Maxplug the sealed either side of the crack using Maxseal Flex

• Maxrest • Maxseal Flex • Maxmesh • Maxjoint Elastic Express • Maxplug.

Waterproofing Suspended concrete slab from Below the Method used is

1. Remove all loose materials from the suspended concrete slab. (surfaces to be treated). Ensuring a clean and sound surface for the application.

2. Any damage to the slab surface to be repaired using MAXREST. Where there is no running water. Use Maxplug where water is running.

3. Use MAXREST to replace any missing mortar.

4. Fill expansion/construction joints with MAXJOINT ELASTIC. Coat repaired joint with MAXSEAL FLEX and MAXMESH (150 mm joint cover).

5. Maxseal Flex  will Bridge Hairline fractures up to 3.5mm wide without filling.

6. Apply MAXSEAL FLEX To a damp clean surface ensuring even coverage. Allowing the masonry substrate to follow the moisture into the porous surface, overlap 50mm onto MAXSEAL FLEX at the joint.

7. Leave to cure for a period of 3 days minimum before the laying of the tile bed.

Sealing a suspended Concrete Slab From the ROOF TOP  with Drizoro Maxseal Super

Part 1: Waterproofing the Suspended Concrete Slab- This way is to spread the Drizoro Maxseal Super below the slab itself before the pour.

Part 2: the application is carried out on the fresh concrete after levelling. The concrete slab has cured enough to be walked on. But still fresh enough to dampen the surface when troweled.
Spread the Maxseal Super in powder form as supplied. The ratio is 1,5 to 2,5 kg/m2. Endeavour to achieve complete and uniform coverage. Immediately after spraying the surface with water to prevent the superficial drying of the slab and to make the power troweling smoother.
Troweling provides a monolithic waterproof layer. Dampening the surface during this process to improve penetration. This prevents an excessively quick drying, which would prevent proper hydration of Drizoro Maxseal® SUPER.
Treat and seal around all areas such as columns, penetrating pipes, corners, concrete joints, and expansion joints prior to general application.

See below

Reference: Drizoro Maxseal SUPER

Waterproofing the Roof Slab itself

1. Adding CMA Admix to the concrete pour.
2. Surface Coating
   a. CMA Ultra ClearSeal seal cracks to 2 mm
   b. Using Saturants and other Clear Coatings
3. For a fully trafficable coating there Maxseal Traffic or
4. Make the surface waterproof using Maxseal Membranes. Then placing the trafficable surface finish over it.

Protrusions & fixing to Suspended Concrete Slab

Seal around any protrusions using Maxjoint Elastic Express

then coat with Maxseal Flex  and embed Maxmesh. Allow 150 mm joint cover.

When you want to fix bolts, poles or practically anything you can also us Drizoro Maxgrip