As experts in structural waterproofing, Smith Damp Proofing Ltd is here to offer professional services to everyone in Barnet, London, and the local area. Our cellar waterproofing services and everything else we offer ensure that moisture is dealt with effectively. For a great service that never lets you down, call our specialists now!
Old cellars and basements will usually require waterproofing if they are to be used as habitable areas. In the UK, cavity drainage systems (Oldroyd Xv) are the most popular waterproofing option for old basements. These redirect water to a sump and pump rather than physically holding it back, so preparation of the old brick substrate is less critical than when using traditional waterproofing systems.
It should be noted that BS 8102 states that “The outer leaf of the exterior wall should be capable of controlling the quantity of water that can pass through it, in order not to exceed the drainage capacity of the system”. For this reason, localised repairs or traditional “tanking” (e.g. using Vandex Unimortar 1 or Vandex BB75) may be necessary to improve the primary resistance of the basement wall. For similar reasons it is normally recommended that a new floor slab is poured using reinforced concrete and waterproofed using Vandex Super.
The Oldroyd membrane system is particularly suited to waterproofing the Victorian basements commonly encountered in the UK as it does not rely on the soundness of the underlying substrate for its effectiveness. The membrane is sealed to walls and ceilings by means of special sealed fixing plugs, whilst on the floor there is normally no need for any form of fixing.
For a eco-friendlier solution, Oldroyd Xv Black can be used instead of Oldroyd Xv Clear. Oldroyd Xv Black contains between 56 and 70% recycled plastic. Oldroyd membranes can be covered with a variety of internal finishes.