Foundations
Basement and foundation wall waterproofing
Foundation walls need protection before backfilling so ground moisture does not pass into the concrete and interior spaces.
Problem
Moisture often starts from the ground
The outer side of foundation walls is exposed to water, moisture and salts. The waterproofing must be continuous, protected and coordinated with drainage where required.
Where it is usedNew constructionProtection before backfilling, floors and final layers. Existing basementsLocal repairs and combination with internal systems where needed. Technical projectsClear scope and material system for large foundation surfaces.
Foundations, walls and underground envelopes
The solution applies to new builds and repairs where external wall access exists or internal reinforcement is needed.
SystemConcrete protectionReduces moisture and salts entering the structural element. Fewer internal defectsLimits future dampness, odours and finish failures. Correct sequenceWaterproofing is coordinated before access is closed.
Waterproofing, drainage and foundation wall protection
Depending on the project, liquid systems, membranes, cementitious waterproofing, drainage layers and protective boards may be selected before backfilling.
Process
Apply before access is lost
For foundation walls, timing matters because repair is harder after backfilling.
- InspectionConcrete, cracks, joints and penetrations are checked.
- PreparationSurfaces are cleaned, repaired and detailed.
- WaterproofingThe system is applied continuously with correct overlaps.
- ProtectionProtective layers are added where required before backfilling.
FAQ
Foundation wall FAQ
The solution depends on access, construction and moisture level.
When should foundation walls be waterproofed?
Ideally before backfilling and before access to the outside face of the foundations is lost.
Is drainage needed?
In many projects it helps significantly. The need is decided after checking soil, level and water flow.