Water-based injection cream for professional wall treatment

In summary

RC Drygel 80 is a highly concentrated, low-solvent, water-based injection cream for professional treatment of rising damp. With 80% active substances (alkoxysilane + siloxane) and a unique gel → vapour phase technology, the product distributes optimally throughout the wall’s capillary network, including microcracks, hollow blocks and pores. The result is a horizontal, water-repellent barrier that is waterproof yet remains vapour permeable. Safe, low-odour and suitable for all common wall types. Ideal for architects, contractors, renovation specialists and facility managers.

What is a water-based injection cream?

A water-based injection cream is a gel-form injection product formulated on an aqueous basis, as opposed to traditional solvent-based systems. The active substances are stabilised in a water-based formulation, resulting in reduced odour, low emissions and safer on-site application. The cream is injected horizontally into drill holes at the base of the wall. The unique principle is based on the gel → vapour phase transition:

Gel phase: the thixotropic cream remains in the drill hole and initiates capillary penetration.
Vapour phase: the active substances (alkoxysilane and siloxane) gradually evaporate and distribute throughout the entire porous network, including microcracks, hollow blocks and pores.

Result: a continuous hydrophobic barrier that blocks rising damp while maintaining the wall’s vapour permeability.

Chemical mode of action

Injection creams for rising damp use various active chemical components to interrupt capillary moisture transport in porous masonry. The choice of active substances largely determines the effectiveness, durability, environmental impact and application range of the system.

Thanks to the specific formulation of RC Drygel 80, the product combines reactive alkoxysilanes for deep chemical anchoring with siloxanes for flexibility and long-term durability. Through the use of emulsifiers, this system is stabilised in water, resulting in a low-solvent injection cream.

Alkoxysilane: alkoxysilanes chemically react with moisture present in the masonry’s capillary network. Through hydrolysis and condensation, they polymerise into a hydrophobic silica structure that bonds firmly to the mineral pore walls.
Siloxane: siloxanes are polymeric compounds that enhance the hydrophobic effect of silanes. They form a flexible, water-repellent film along the capillaries.

After injection, the active system migrates through the capillary network via the gel and vapour phases. Subsequent polymerisation creates a horizontal, hydrophobic barrier that is vapour permeable yet water-resistant. The product is low-odour and suitable for residential, industrial and historic buildings.

Ease of use

RC Drygel 80 is designed for professional applications where reliability and ease of use are essential. In addition to the gel → vapour phase technology, the practical packaging of the thixotropic cream in 600 ml cartridges allows for easy yield calculation and minimal product loss. Furthermore, this injection cream is compatible with all common wall types, including solid masonry, hollow concrete blocks, rapid construction blocks and natural stone.

Number of cartridges

Wall thickness (cm)	5 m	10 m	15 m	20 m	25 m	30 m	35 m
10	1	2	3	4	4	5	6
20	2	4	6	7	9	11	12
30	3	5	8	10	13	15	18
40	4	7	11	14	18	21	24

‍

RC Drygel 80 combines highly concentrated active substances, gel → vapour phase technology and optimised usability, making it one of the most effective water-based injection creams for the long-term control of rising damp. The product is safe, low in solvents and user-friendly for professionals such as architects, contractors, renovation specialists and facility managers.