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Integral Water Proofing Powder

Integral Water Proofing Powder

Perma Seal Admix



  • Perma Seal Admix is an integral waterproofing compound in powder form which acts by crystallization method to seal capillaries in concretes and mortars. Perma Seal Admix is added to the concrete or mortar at the time of batching. Perma Seal Admix is a free flowing powder, composed of ordinary Portland cement, selected treated fillers and proprietary active chemical ingredients. In concrete the active ingredients of Perma Seal Admix react with the products of cement hydration in presence of moisture to activate catalytic reaction which produces non soluble
  • crystalline formations which block the capillaries effectively and permanently.

Perma Seal Admix is used effectively as an integral waterproofing compound in
concrete during construction of all water retaining structures, underground and overhead water tanks, swimming pools, water treatment plants, basements, podium slabs, roof slabs and all RCC members around toilets and bathrooms in a building structure. It is also used as integral waterproofing compound in mortars which go as renderings on all these structures. Since leakages corrode the reinforcing steel in RCC structures thereby reducing the life of structure itself, it is a good to use a good integral waterproofing compound in all concrete produced for use in RCC structures.


  • Perma Seal Admix becomes an integral part of the concrete and waterproofs it.
  • Once used as an integral waterproofer Perma Seal Admix resists hydrostatic pressures from both positive and negative sides of the structure.
  • This waterproofing system allows the concrete to breathe normally, thereby keeping the concrete healthy for ages.
  • Simple dosing into the concrete batching mixers as there is no separate application cost involved.
  • Perma Seal Admix works by crystallization process. Unlike other integral waterproofers this is not a mere plasticizing admixture hence it ensures good waterproofing success during concreting itself.
  • Perma Seal Admix does not alter the setting time of the cement in any way. This can be used in any season irrespective of temperature conditions which are within recommendation of the concreting practice codes.
  • Perma Seal Admix is alkaline in nature hence it preserves the alkaline nature of concrete surrounding the reinforcing steel.

Perma Seal Admix is composed of Ordinary Portland Cement selected and treated fillers and proprietary active chemicals. In contact with the moisture these active chemicals catalyze the reaction of products of cement hydration to form insoluble micro-fine crystals which effectively block the capillary structures in the concrete body blocking the passage of water. Thus the concrete becomes permanently sealed against any penetrating water or liquids.

Perma Seal Admix is recommended at a dosage of 2% by weight of cement. Perma Seal Admix is added to the dry mix of concrete or mortar at the recommended dosage and mixed before addition of designed amount of water. Perma Seal Admix does not alter the water requirement of the concrete. Mixing, placing, compacting and curing of concrete is expected to go as per usual practice and no special care or requirement is needed because of Perma Seal Admix addition to the concrete mix.


  • For achieving good quality waterproof concrete the following guidelines are recommended:
  • Concreting when ambient temperatures are over 33oC or below 4oC is not recommended.
  • Minimum cement content in concrete for achieving good waterproof quality is 300Kgs/ M3 .
  • Pouring of the concrete after its initial or final setting time of the concrete has lapsed is not recommended.
  • For a waterproof concrete water/cement ratio should be maintained at 0.43 or leff depending upon grade of concrete.
  • Control joints in big structures need to be incorporated as per the requirement and the design of a competent structural engineer. Any deformations, cracks and structural failures arising out of want of control joint design will nullify all waterproofing treatments and create more problems.

Perma Seal Admix is recommended to be added to the dry concrete mix at a dosage of 2% by weight of cement

Perma Seal Admix is available in 20Kg bags.

Perma Seal Admix has a shelf life of 12 months from the date of manufacture..


  • PERMA warrants that all products are free from any defects of manufacture and comply with the specifications given in their respective technical data sheet. No warranty can be given as to the results of use because conditions of use, such as site conditions, surface preparations, workmanship, weather, structural issues and other factors are beyond the control of PERMA. Purchaser agrees to seek the advice of qualified professionals to carry out tests & take trials to determine the suitability of products for their intended purpose prior to full scale usage of PERMA products and assumes all risks.
  • The company does not assume any liability for unsatisfactory results, arising from the use of our products. Purchaser’s sole liability is limited to replacement of product or refund of the purchase price paid if any product proven defective. No other warranties, express or implied, shall apply including any warranty of merchantability or fitness for a particular purpose.
  • PERMA shall not be liable for any consequential damages arising from the use of our products for unsatisfactory results.
  • The information supplied in this datasheet is based on our experience through extensive research and is given in good faith in order to help prospective users. We reserve the right to update the information provided in our technical data sheet at any time without prior notice within the scope of technical progress or new developments.

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