WELCOME TO OUR UNDERGROUND WATERPROOFING PROJECT
This project is presented by www.lectros.com
Summary: Underground Waterproofing. Waterproofing walls below damp proof course
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 www.lectros.com with full specifications of their Techno SBR latex Liquid.
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 Delta system will solve the damp problems of most underground situations and as you can see above, can be boarded out and plastered without fear of any further damp penetration.
Top Tools
Click on a tool below for additional information.
 Adhesive Trowel 11 |
 Belle Mini Mix 150 Concrete Mixer 240V |
 Damp Proof Membrane 1000Ga 4 x 15M |
 Draper Damp Detector |
 UniBond Waterproof PVA 5Ltr |
 Walton Shiplap Double Door Apex Shed 6'10.3" x 6'11.7 |
Much more construction information is available in our bookstore. All the tools and fittings you need in the toolstore.
Forums
BARN CONVERSION
BASEMENT - USING AS UTILITY ROOM
BASEMENT CONVERSION
cold and damp spots
CONDENSATION - Our Guide
CONSERVATORIES (TIMBER)
CONSERVATORIES (UPVC)
CONSERVATORY FOUNDATIONS
Damp in a chimney breast
DAMP OR MOULD
Dealing with damp
Digging a basement
Foundations
Safety Workwear and Clothing
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