This treatment is taken up after the casting of Reinforced Cement Concrete (RCC) and RBC roofslabs which starts directly over the slab tops. This system basically has four steps:

1. A layer of ‘Wetroof-cement-mortar’ is laid after laying ‘Wetroof-Cement-Slurry’ over the rough surface.
2. Laying of brick-bats over the wet- mortar leaving sufficient space on all sides so that each and every brick-bat is encased into ‘Wetroof-Cement-Mortar’. Necessary gradient is strictly maintained at this stage for easy flow of rainwater. It is then properly water-cured for a reasonable time.
3. Grouting of void spaces in brick-bats with ‘Wetroof Cement Mortar’ with a layer of approximately 20mm.thickness over it along with finishing the surface with ‘Wetroof Cement Slurry’ and be finished like floors.
4. False marking of 12 inches squares.

Note: The same treatment carried over Lime-Terraced Roofslab and here, the size of brick-bats is reduced to brick aggregates to reduce the load, as the slope is already there in the terrace.

 Advantages of Surface Method

• It renders the surface water-repellent, hard and tough, suitable for normal domestic use as on ordinary floor of the building.
• The surface provides better insulation values as compared to any other bitumastic preparations that are good conductors of heat.
• The surface provided does not require any other finishing works unless the roof is required for aesthetic purpose.
• The surface provided could be rendered and finished in various shades and colors.
• The treatment is based fully on cement based materials with the admixture of our special waterproofing compound(tested as per I.S.2645/1975).
  

2. ‘INJECTION METHOD’ OF "WETROOF PROCESS"

This treatment is suitable for RCC structures like overhead water tanks, reservoirs and basements. It could be started after the casting of the RCC structures. The basic principle is to penetrate and spread the ‘Wetroof-Cement-Slurry’ inside the structure to plug the porous places/voids and this system has four stages:

1. A number of holes shall be chased for sockets through which ‘Wetroof-Cement-Slurry’ is injected under pressure.
2. The sockets are removed and holes are plugged carefully followed by proper water curing.
3. The ‘Wetroof-Cement-Mortar’ is laid over the floors and walls for full heights and at least 18 inches above the adjoining ground level in different layers as per our pattern.
4. The final surface of the floors and walls shall be in cement colors finished with ‘Wetroof-Cement-Slurry’.

Advantages of Injection Method

• The structure is completely impregnable to water from inside as well from outside.
• There is no need for bitumastic felts, polythene sheets or paints which are liable to be damaged or need replacement after an interval of time.
• The treatment is of permanent nature based on fully cement based materials.

The surface could be finished or rendered in various colors, shades or decorative tiles, as per extra requirements of the Clients.

3. "BOX METHOD" OF WETROOF PROCESS"

This method is recommended for the treatment of underground RCC structures like basement floors of buildings, underground water storage tanks and reservoirs, since in such cases the outside water is to be stopped to penetrate into the RCC structures and to effect the inside, and if necessary use injection method as well from inside. In this method the entire structure is encased by the treatment and the subsoil water will not find any access to it. This treatment is taken up during the initial stages of the construction. We will require by the owners at least 6 inches thick cement concrete 1 : 3 : 6 laid even with smooth surface finished on well compacted soil or rubble soling as the case may be, and must be laid in such a way that it should project at least six inches on all sides. The details are as follows:

1. A layer of ‘Wetroof-Cement-Slurry’ over the six inches thick base cement concrete.
2. A layer of ‘Wetroof-Cement-Mortar 1 : 4(cement : sand) with the admixture of waterproof compound 2% by weight of cement about 25 mm. thick. 
3. A layer of stone-tiles about 25 mm. to 40 mm. thick with joints raked and sealed with ‘Wetroof-Cement-Mortar’ and finished with a layer of ‘Wetroof-Cement-Mortar’ finished smooth/rough as per site-requirements. The Stone-Tiles in this way are totally encased into ‘Wetroof-Cement-Mortar’ and makes the surface completely water-repellent. This surface then is superimposed by Owners with RCC structure raft/base and walls and the same treatment is to be carried out all along the walls from outside and finished smooth to make completely water-repellent. After the treatment all along the walls, the excavated trenches are back-filled and compacted thereof. However, during the completion stage of the building injections/pressure grouting can be carried out wherever necessary from the inside.

 Advantages of Box Method

• The RCC structure treated thus is completely leak-proof as the sub-soil water will not have any access to the inside surface.
• The treatment is of permanent nature based fully on cement based materials.
• The inside surface which is to be finished by the owners, could be finished in several decorative finishes.