WELCOME TO OUR UNDERGROUND WATERPROOFING PROJECT
This project is presented by www.lectros.com
Summary: Underground Waterproofing. Waterproofing walls below damp proof course
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In these days of soaring house prices, more and more home owners are looking to extend their properties and make as much use as possible of existing space. This includes waterproofing cellars etc to make either additional living rooms or extra storage space.
Tanking:
To achieve a dry internal area, two main methods are used. Firstly under some circumstances, a "skin" of cement and very high strength adhesive, mixed in the correct proportions to form a slurry membrane, can be applied to the walls to prohibit the ingress of water into the building. In its simplest form this can be represented by a mixture of ordinary portland cement and a latex solution called SBR (Styrene Butadiene Copolymer). SBR is available from all builders merchants, and for very light areas of underground damp, may prove the answer when mixed with cement and brushed on in two coats at right angles to each other. Preparation is absolutely vital for this kind of waterproofing and a diy approach is not recommended. Your masonry will doubtless contain salts which may react with any any slurry applied on top of them and this will waste a great deal of time and money. SBR latex is liquid which allows surface application of cement and sand mixes to be much thinner than normal sand/cement applications.
For a guaranteed job, a multi-coat waterproofing plastering system is recommended, utilising SBR in all, or some of several thin coats.
Technical data sheets can be downloaded from the following location www.lectros.com containing full details of the Lectros damp proofing system
Cavity membranes:
The second method of ensuring a dry basement is the cavity membrane system. A new internal wall surface is created using a very strong, very versatile, high density polyethylene.
This material can be fixed mechanically, using special fixings, to the substrate of the building, and the water allowed to run behind it. Depending totally on the flow of water, various systems are available, and the cavity, or space between the membrane and the wall, can be ventilated if appropriate, or sealed with the water running, behind the walls, to a new sump position where it can be pumped away. The new surface can be plastered or decorated, and again technical specifications, along with help on choosing the correct application, can be found at www.lectros.com .
The versatile Lectros system will solve the damp problems of most situations and as you can see above, the treated area can be boarded out, plastered and finished without fear of any further damp penetration.
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