Sealing of Masonry

WEBAC 1401 is a very low-viscosity PU injection resin with good flow and penetration properties that can be used on dry, damp, or wet masonry. It cures into a volume-stable, elastic resin with minimal foaming. Due to its capillary-blocking and solidifying properties, it is particularly suitable for post-construction damp proof courses (dpc) in accordance with WTA standards, especially for larger masonry cross-sections.

WEBAC 1403 is a long-track-record proven PU injection resin, particularly valued for its safe and controlled application. Upon contact with water, it cures into a closed, waterproof, and dimensionally stable resin with a fine pore structure. It is suitable for sealing, crack injection, and stabilizing masonry and concrete, and is used for post-construction damp proof courses (dpc) against capillary rising damp.

WEBAC 1404 is a low-viscosity PU injection resin that offers exceptional cost-effectiveness. In the presence of moisture, it exhibits only a very slight tendency to foam and cures into a volume-stable resin that seals the capillaries in the masonry. The resin is suitable both as a post-construction damp proof course (dpc) and for filling voids in masonry with high porosity, such as quarry stone.

WEBAC 1405 is a low-viscosity, CE-certified PU injection resin. It cures with constant volume to form an elastic, limited-elasticity resin. Upon contact with water, it forms a uniform, closed, and watertight pore structure. It is used for closing, sealing, and limited-elasticity filling of dry, damp, or water-bearing cracks, as well as for sealing cavities/voids in building construction, civil engineering, bridge construction, tunnel construction, and shaft construction.

WEBAC 1420 is a highly flexible, tear-resistant PU injection resin designed for areas subject to severe biological and chemical stress. Upon contact with water, it rapidly reacts to form a dimensionally stable foam structure and cures into an elastic, volume-stable resin with good elongation. It is suitable for sealing, waterproofing, and making limited-elasticity joints in building components, as well as for sealing water-bearing cracks in both dry and wet areas.

WEBAC 1440 is a highly flexible PU injection resin that forms a tear-resistant foam structure and is particularly suitable for structures with cavities/voids. It cures with constant volume to form a chemically highly resistant resin that stabilizes porous masonry and increases its strength and waterproofing properties. It is used for closing, sealing, and creating limited-elasticity joints between building components and is suitable as a post-construction damp proof course (dpc) against capillary rising damp in various types of masonry.

WEBAC 1610 is a high-strength PU injection resin whose compressive and bending tensile strength is specifically designed for structural bonding in masonry. When mixed with water, it foams slightly; however, under dry conditions, it cures without foaming into a compact, waterproof material. It is suitable for sealing, solidification, and structural bonding of building components, as well as for filling cavities/voids, and is specifically designed for use in masonry.

WEBAC 1660 is a CE-certified PU injection resin with high compressive and bending tensile strength. It foams slightly upon contact with water and, under dry conditions, cures into a virtually pore-free, solid, and waterproof material. It is used for sealing, bonding, and structural solidification of concrete and masonry; for filling cavities/voids and gravel pockets; and for structural bonding of dry voids in rubble masonry and loose rock.

WEBAC 150 is a versatile PU injection foam resin (SPU) that is particularly valued for its safe and easy application. Upon contact with water, it cures with significant expansion to form a surface-tight, firm-elastic foam with a very fine-cell structure. This makes it suitable for the rapid, temporary closure and sealing of pressurized water-bearing cracks, cavities/voids, and leaks in building construction, civil engineering, bridge construction, and tunnel construction.

WEBAC 157 is an elastic PU injection foam resin (SPU) with a very fine-pored foam structure. Upon contact with water, this low-viscosity material forms a surface-tight, adaptable foam. It is suitable for temporarily closing, sealing, and filling cracks, cavities/voids, and gaps in masonry, concrete, and natural stone—e.g., in shaft construction and water management structures—and can also be used where there is limited movement of structural components.

WEBAC 1500 is a CE-certified PU combi injection resin that combines the beneficial properties of S-PU and PU resins. Upon contact with water, it rapidly forms a dense, elastic foam that ensures a permanent seal, but it also cures with constant volume even without water. It is particularly suitable for sealing cracks, cavities/voids, and areas exposed to water.

WEBAC 155 is a moisture-curing, 1C polyurethane (PU) injection resin that is ready for immediate use without mixing or a catalyst. Upon contact with water, it reacts to form an elastic, surface-tight foam that reliably and permanently seals cracks and cavities/voids. This makes WEBAC 155 particularly suitable for crack injection, masonry waterproofing, and building waterproofing, even against rising water.

WEBAC 2100 is a very low-viscosity silicate injection solution. When applied to damp building materials, it reacts to form a capillary-restricting and solidifying silica gel and is suitable for post-construction installation of a damp proof course (dpc) against rising damp in brick, natural stone, and sand-lime brick masonry.

WEBAC 2135 is a WTA-certified, hydrophobic silane injection cream. The active ingredient penetrates capillaries and pores, curing to form a water-repellent barrier while preserving the masonry’s breathability. It is used to create a post-construction damp proof course (dpc) against capillary rising damp in heavily dampened masonry and provides lasting protection for the building structure against moisture damage.

WEBAC 2260 is a slow-expanding, thermally insulating PU casting foam resin. It cures into a pressure-resistant, non-brittle rigid foam with a fine-pored, closed-cell, and hydrophobic structure. It is used to fill voids, cracks, and gaps, e.g., in double-shell masonry or around pipe penetrations, and also serves as a sealant.

WEBAC 240 is a low-viscosity, fast-setting polyacrylate injection gel with National Technical Approval from DIBt (B-concentration 2%). After curing, it forms a waterproof, firm-elastic gel that reliably absorbs dynamic and mechanical stresses. It is particularly suitable for curtain injection—either in the subsoil immediately adjacent to the structural element or within the existing building structure—as well as for subsoil stabilization and waterproofing or damp proof courses (dpc).

WEBAC 250 is a very low-viscosity polyacrylate injection gel with excellent penetrating ability that penetrates even the finest pores of mineral substrates. After curing, it hardens into a waterproof, firm-elastic gel with high elasticity and good adhesion to both dry and wet substrates. It is particularly suitable for post-construction damp proof courses (dpc) and for large-area waterproofing in masonry.

The WEBAC IP 2K-PU is an air-powered 2C double-piston pump designed for dispensing polyurethane resins in a 1:1 mixing ratio. It is characterized by high dispensing accuracy and a robust, site-ready design, and is available with a variety of connection systems and mixing heads. The pump is used for the sealing of foundation pits, as well as for ground injection and the backfilling of cavities/voids.