To achieve a Grade 3 environment you can combine two or more types of protection. Combining a Type A, B and C is the most reliable system as it controls and manages the water/water vapour entering the structure. To help slow down the ingress of water into the structure a Type A system can be used, ideally on the external walls and on new builds underneath the slab, as well as using water bars and a crystallization system at construction joints (Type B protection). Click the technical drawing on the right to view a typical external Type A detail.
For existing structures this can not always be achieved, access to the external walls is sometimes restricted or too costly to excavate, therefore in this case applying a Type A system internally would be sufficient.
The Type A and B protection reduces the amount of water entering the Type C system lowering the pumping cycles saving electricity and maintenance costs.
Click the technical drawing on the left to view a typical internal Type C system.
For any queries on cellar drainage equipment, basement waterproofing solutions or structural waterproofing systems please contact us.Get in touch