Waterproofing & Sealing Products

Holderchem offers a wide range of cementitious-based waterproofing products for new construction and repair works. The products can be divided as per the following:

1- Waterproofing by crystallization slurries: These incorporate various active chemicals, which react with the free lime and moisture present in the capillary pores of the concrete to form insoluble crystalline complexes that form crystals that block the capillaries and minor cracks, thus preventing any further water ingress.

2- Cementitious-based waterproofers: These are used for various waterproofing applications, and are applied against active or passive water pressure. They are rapid setting to stop instantly the ingress of water, efflorescence free, non-shrink, self-leveling, and offering adequate resistance towards abrasion.

3- Sealants including multi-purpose elastomeric polyurethane sealants, polysulphide sealants and surface hardeners.

• Polyurethane sealants, which are versatile and therefore suitable for various fields of use, such as floor and wall joints around windows, doors, floor joints exposed to different chemicals, joints in waste water and sewage treatment plants, joints in box culverts and tunnels, joints in pedestrian and vehicular traffic areas such as walkways, decks, and parking garages.

• Polysulphide sealants, which are two component synthetic rubber-based sealants. They cure by absorption of atmospheric moisture to form a permanently flexible seal. They are suitable for use within the construction industry on all joints where above average repeated movement is encountered over a wide temperature range. They provide outstanding resistance to weathering and chemical attack from solvent, alkalis, dilute acids, oils and grease.

• Surface hardeners designed to penetrate, seal and harden the concrete surface, and make concrete surfaces more abrasive resistant while reducing damages caused from water and oil borne contaminants. They are generally used to provide long lasting protection of concrete surfaces in warehousing, distribution and car parks.

• Water-repellents designed to repel water, reduce staining and spalling of substrates and provide effective concrete protection from de-icing salt attacks.

4- Bituminous membranes and coatings: They are used to create a watertight surface to protect buildings. They include flexible and vapor-proof protective coatings, atactic polypropylene (APP) and styrene butadiene styrene (SBS) protective membranes.

5- Insulation products and tapes: These include polyethylene foam products to insulate pipes and fill-in joints, waterstops and rubber sealing tapes.