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Wykamol Conversion Membranes Available Frm Greengates Builders Merchants Accrington, Lancashire

Basement conversions are increasingly popular and everything you need to complete the job is available through Greengates Builders Merchants Accrington, Lancashire.­  The key to success in this field is to make absolutely sure everything is waterproof and with over 70 years of experience in the field Wykamol have produced a range of products which can't be beaten.

Conversions using membranes

No two basements are the same and naturally there are a range of water-proofing solutions suitable for each environment. Here we take a look at how membranes work and how they are applied.

High density polyethylene membranes provide an air gap between the membranes and the wall, which allows any free water to run behind it. The membrane is mechanically fixed to the original sound wall surfaces, usually with treated battens or other framing systems, on to which plasterboard can be fixed. In some circum­stances the battens can be omitted and plasterboard and membrane fixed using special plastics plugs, alter­natively a wet plaster could be applied.

With the introduction of the latest British Standard 8102 (1990) "protection of structures against water from the ground", the use of cavity membranes has been generally accepted in the uk. Wykamol systems can easily deal with aggressive ground water conditions, where basements are liable to flooding, or indeed where simple dampness, conta­mina­tion or salting problems are prevalent. Other more diverse applications include turf covered roofs, barn conversions, tunnel linings or even a barrier against radon gas.

As there is little or no preparation required for the membrane system it is very quick to install. When dry finishes are used the system is a "fast track" solution. Decoration does not need to be delayed and there is no drying process.

The Wykamol membrane system has been used successfully in many situations in the UK - from small domestic basements up to major water­pro­ofing projects such as the London Underground stations. There is rarely a dampness or water ingress problem that falls outside the scope of the capabilities of the Wykamol system.

Why use cavity drain membranes?

Polyethylene cavity drain membranes are the ultimate solution to basement water­pro­ofing. In an ideal situation, water pressure should be removed from the building by lowering the ground levels and diverting water away from the property. As we all know, an ideal situation rarely occurs in the real world. Normally it is impossible to achieve the above due to the fact that the basement is completely below ground.

Cavity membranes create an envelope within the building on the negative side of the water pressure allowing the natural drainage of the ground water to enter the structure and be collected behind the system. This is then dealt with efficiently and silently out of sight.

Traditional structural water­pro­ofing systems allow for the removal of plaster and render to prepare the surfaces for the application of a treatment./ This type of water­pro­ofing relies totally on an adequate bond between the treatment material and the wall surfaces. In many cases, cavity drain systems can be fixed directly to the existing surfaces using special water sealed fixing plugs, saving time, mess and money.

Traditional cement based systems are not effective vapour barriers either and condensation problems can easily arise, in fact, can be created by these systems. Cavity drain membranes are not only water impervious linings, they also provide an efficient vapour barrier , combined with added insulation, making severe, damaging condensation unlikely.

Pressure created by water retaining systems such as cement based tanking inflicts stresses on a structure which can cause additional problems. These types of systems will only have a limited life and can affect other rooms or adjoining properties.

Cavity drainage membranes are unaffected by being in contact with wet surfaces. They are also complete barriers against salt conta­mina­tion. Aggressive sulphate, nitrate and chloride salts are completely isolated from the internal, finished surfaces. Internal finishes to walls and floors can have added insulation performance. Correctly installed and with maintained drainage, the cavity drain system should last the lifetime of the structure.

So why not come and see us and get the help and advice you need to convert your basement.

Greengates Builders Merchants delivering to the whole of Lancashire including: Accrington, Blackburn, Burnley, Clitheroe, Darwen, Great Harwood, Haslingden, Padiham and Pendle.

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