Mortar joints in the brickwork, cracks in the masonry, gaps along the damp proof course or water rising from the ground. Mortar can be repointed to fill any gaps and cracks.
Water Resistant Sealants
These can include the use of silicone sealants around door and window frames, or anywhere where there may be small gaps which would let water in. It also includes sealants that can be painted on to porous materials such as bricks and mortar to prevent water penetrating them.
Water Proofing Treatment
Floodsense can if specified, use a water proofing treatment on building exterior walls such as masonry to increase its resistance to flooding. Usually this will be specified in the surveyors report carried out on all buildings being protected. It is usually specified because there may be concerns as to the porosity of the outer wall of a building.
To ensure that the protective measures taken have the best possible chance of preventing water ingress into a building, all possible weak points are identified and remedied; this may include re-pointing, filling in of cracks and applying a water proof sealing agent.
External Tanking and Damp-proof Membranes
A range of loose laid, self-adhesive, torch and liquid applied solutions can be specified, designed and supplied to accommodate almost any scenario. For further reassurance we can use Monarflex Geomembranes (part of the Icopal Group) our installation service is backed by a guarantee of up to 20 years. These industrial strength membranes are used in the oil and gas industry.
Floodsense uses a flexible membrane tanking system, and creates a cavity between damp masonry and a new wall surface. The base of the wall carries a drain channel which normally runs to a sump pump or manhole, thus relieving water pressure.
The system can be either dry lined or plastered directly on to, to achieve a smooth plastered finish. This method of tanking:
- Eliminates the risk of condensation associated with cement render tanking.
- Is not affected by structural movement or vibration from traffic.
- Manages the water pressure by allowing the water to drain away, eliminating the risk of pushing the water elsewhere.
Basement Level Solutions
The waterproofing solution will mainly depend on the intended use of the basement or area being waterproofed. Other considerations are the condition of the surface being water proofed and method of construction.
BS 8102, Code of Practice for protection of structures against water from the ground, identifies four categories in table one of this document:
- Grade 1 – car parking, plant rooms, workshops
- Grade 2 & 3 – Domestic and office use
- Grade 4 – Archives and stores
Subject to requirements our solutions will include:
- Cementitious renders and slurries
- Cavity membranes
- Resin injection (localised repair)