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Visualisation of waterproofing within existing masonry

Which waterproofing
is right for your wall?

wetBLOC, wall sawing, injection resins and water-repellent treatments compared — from operating principles to intervention in the masonry.

Compare methods
AI-generated visualisation

How the four methods work

wetBLOC

Horizontal and vertical waterproofing against rising damp and lateral moisture ingress. 45° drill holes at the base of the wall form the lower barrier. Further rows of packers distribute the gel across the treated wall surface.

Wall sawing method

A barrier layer in the horizontal saw cut above the lowest course of masonry forms the barrier. No protection against lateral moisture. Gaps can allow moisture through.

Injection resins

Resin is injected from the front and forms a horizontal barrier zone above the lowest course of masonry. No protection against lateral moisture. Gaps can allow moisture through.

Water-repellent treatment

The product is injected from the front and forms a horizontal water-repellent zone. No protection against lateral moisture. Gaps can allow moisture through.

Waterproofing methods compared directly

CriterionOur systemSwellable polymer gelWall sawing methodInjection resinsWater-repellent treatment
How it worksSimplified illustration
  • Blue: moistureWater and damp areas in the masonry.
  • Turquoise: gel zoneHorizontal and vertical waterproofing zone with wetBLOC gel.
  • Red: barrier levelHorizontal barrier used by the comparison methods.
Horizontal and vertical waterproofing against rising damp and lateral moisture ingress. 45° drill holes at the base of the wall form the lower barrier. Further rows of packers distribute the gel across the treated wall surface.
A barrier layer in the horizontal saw cut above the lowest course of masonry forms the barrier. No protection against lateral moisture. Gaps can allow moisture through.
Resin is injected from the front and forms a horizontal barrier zone above the lowest course of masonry. No protection against lateral moisture. Gaps can allow moisture through.
The product is injected from the front and forms a horizontal water-repellent zone. No protection against lateral moisture. Gaps can allow moisture through.
Minimal High Medium Minimal
Very good Good Conditional Low
High High Medium Medium
Yes Yes No Yes
Yes Yes Yes Yes
Yes No No No
360° Horizontal Limited Limited
15 years Variable Variable Variable

The table provides a general classification of the applications described, not an assessment of every product within a method category. Properties and suitability depend on the specific product, masonry and execution. The wetBLOC warranty applies in accordance with the warranty terms, subject to professional planning and execution.

Frequently asked questions about the method comparison

What matters when choosing waterproofing for your building.

How do I find the right waterproofing method?

The starting point is an examination of the building: Where does the moisture come from, how is the wall constructed and which areas are affected? Your specialist partner interprets the findings and recommends a suitable renovation concept. The table helps compare the methods.

What is the difference between a horizontal and a vertical barrier?

A horizontal barrier is intended to interrupt upward capillary moisture transport. Vertical waterproofing addresses lateral moisture ingress through the wall surface. The measures required depend on the actual moisture pathway.

How does wetBLOC differ from water-repellent treatment?

Water-repellent agents change the wettability of capillary walls. wetBLOC uses existing moisture to spread within the pore system, where swelling and crosslinking form a capillary-sealing zone. Suitability must be assessed for the existing masonry in each case.

Why is vapour permeability important when choosing a method?

Water vapour diffusion and capillary water transport are different processes. Vapour-permeable waterproofing continues to allow water vapour through. Subsequent drying also depends on the wall construction, surfaces, indoor climate and remaining moisture load.

Is every method suitable for every type of masonry?

No. Building material, voids, wall thickness, moisture saturation and masonry condition influence the selection. Products also differ within a method category. The findings and technical documentation for the intended system are decisive.

Is remediation complete after waterproofing?

Depending on the findings, drying, treatment of affected surfaces and a suitable plaster system may also be needed. These works should already be included in the remediation plan and quotation.

How can quotations be compared meaningfully?

Compare the same scope of work: investigation, waterproofing area, preparation, materials, execution and agreed follow-up work. Also clarify which warranty conditions apply and who will carry out each service.

The right waterproofing
for your building

Have your existing properties assessed and discuss the next steps with a wetBLOC specialist partner.

Request a consultation