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System Details

The Drythane system comprises three liquid applied layers which are chemically fused together. The three coats are environment friendly since they do not contain any solvent or emit any vapours or smells. They are non-toxic and suitable for lining water tanks. Since there is no solvent, the wet film thickness is equal to dry film thickness and you are not paying for solvent which will simply evaporate. E.g. A product containing 50% solvent will require double the number of litres to get the same thickness as Drythane which has zero solvent. Drythane cures very fast and can be walked on in a couple of hours. It can be left uncovered for normal use or for decorative purposes you may cover with tile or marble etc.

System components are as under:

PIV Primer

Solvent free, 2K moisture tolerant primer with outstanding adhesion to damp and dry concrete. The primer penetrates the concrete surface where it reacts with residual moisture to seal and strengthen the surface. concrete.

Main Coat

Solvent free, 2K polyurethane coating membrane with excellent resistance to water immersion and mechanical strength. Liquid applied using rollers, the product is a seamless membrane bonded very strongly to the concrete. Provides long, trouble free service life.

Optional Heat Reflective Coat

Solvent free, 2K aliphatic, colour fast, Polyurethane Coating. Reflects solar radiation and reduces the indoor temperatures.

Competing products

Presently, the Indian waterproofing market is being served by sub-standard, low performance products such as bitumen based coatings/ sheets and thin film, inferior polyurethane/ epoxy paints. There is universal consensus in the industry that these simply do not work! Some of the issues are:

  • Ineffective - does not prevent 100% the entry of water and dampness.
  • Very weak film which can be easily damaged. Requires protective covering comprising Geotextile/ Concrete Screed/ Sealant. This adds considerable cost.
  • Cannot be used with stagnant water. Hence cannot be used for roof lawns, water tanks, swimming pools etc.
  • Very toxic. Contains carcinogenic tar and similar substances. It cannot be used for lining water storage tanks due to its toxicity.
  • Emits very foul smell and hazardous vapours during application.
  • Very slow curing. Slows project schedule.

See comparative testing video on YouTube at

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