• Resistant to penetration of water both under:
  a. Hydrostatic pressure
  b. Capillary action.
• Initially alkaline, has no corrosive effect on reinforcement in mass concrete
• Is water retentive and thus aids curing, ensuring maximum strength
• Reduces attack by water-borne aggressive conditions.
  
• Improves cohesive properties of concrete reducing segregation
  and bleeding.
• Aids in achieving better surface finish.

CEMPROOF Integral Waterproofer contains a blend of specialized chemicals which when incorporated in concrete reduces permeability and facilitates the construction of water tight structures. It makes the concrete waterproof of resist both hydrostatic pressure and capillary absorption.

Waterproofing Sructures against Ground Water Pressure

Rendering should be composed of 2-1/2 to 3 parts and sharp sand to 1 part cement by volume. Add 200ml. (1Kg) CEMPROOF INTEGRAL WATERPROOFER per 50 kgs cement and guage the mix as stiff as possible to reduces to the minimum the risk of cracking of the rich mix.Never apply a strong mix on a weak backing.

Apply renderings in two coats at a total thickness of between 20 to 25 mm
(approx. ¾ " to 1")200 ml of Cemproof Integral Waterproofing liquid or 1 kg Cemproof Integral Waterproofing powder should be added to each 50 kg cement (approx. 1 ¾ pts./1 cwt) and the mix should be gauged dry. Apply the first coat of rendering and extend over floor for a distance of approx. 30 cm.(I foot) from the internal wall floor angle. Scratch to form a key.

Apply the second coat rendering and butt joint to floor forming a cove at the internal angle. The finishing coat of rendering should be closed with a steel trowel. It is not possible to apply the first rendering coat over the total wall area in one day,necessitating the formation of joints, the joints should be formed at least 60 cm (approx. 2 ft) away from the internal wall angles ,and in the application of the finishing wall rendering coat, joints in same should be staggered away from joints in the first rendering coat .

For normal conditions mix proportions at 1 part O.P.C , 2 Parts Zone 2 concreting sand to 4 parts coarse agregate plus 200 ml of CEMPROOF INTEGRAL WATERPROOFING LIQUID(1 kg Cem W/P Powder ) per 50 kg of cement. Where water pressure is high include Cemproof Conflo in a similar mix to increase density taking care to reduce the water content (water/cement ratio) of the mix. It is absolutely essential to keep the water content Joints in the concrete should be stepped and a P.V.C water bar used where appropriately.

Apply a rendering 18-20 mm (approximately 3/4" thick) in two coats a mix comprising one part OPC to three parts clean, sharp washed sand adding, CEMPROOF 200ml INTEGRAL WATERPROOFING LIQUID (or 1 kg comproof waterproofing powder) per 50 kg cement.Use CEMPROOF INTEGRAL WATERPROOF at a rate of 200 ml (1kg)/50 kg cement. It is possible to scrape finish waterproofed renderings to minimise any tendency to crack.