is a liquid applied, latex modified bituminous elastomeric waterproofing membrane which, when fully cured, forms a permanently flexible waterproof lining to most building surfaces including reinforced concrete, block work, brick work and cement render. Single component, user friendly. Simple application - brush, roller or spray. Excellent elasticity. Seamless. Low odour, non toxic water based. Fast curing.
Polyurethane Retaining Wall Liquid Membrane:
Kemseal PU Membrane is a fast cure, liquid applied,
polyurethane elastomeric waterproofing membrane which when fully cured forms a
permanently flexible waterproof lining to most building surfaces including reinforced concrete, block work, brick work,
cement render, plaster board, fibre-reinforced cement sheets, particle board
flooring and plywood etc. Single component. Simple application- liquid applied.
Excellent elasticity. Seamless- no joints or cracks. Fast cure- recoat in 2-4
hours. Smooth, Easy to Apply Formulation. Non sag- Vertical and Horizontal
Application. USE AREAS: Planter boxes. Tanking. Retaining Walls. Balconies and
Decks. Shower Recesses. Flashings. Wet Areas. Walls.
Solvent Free Rubberized Liquid Membrane:
Kemseal P14-Fibre is a liquid applied polyurethane
modified copolymer waterproofing membrane containing a fibrous filament
reinforcing. When fully cured, Kemseal P14-Fibre forms a Class III flexible
waterproof lining to showers and wet areas as described in AS 4858- 2004.
Waterproofing Wet Areas within Residential buildings. Kemseal P14-Fibre
may be applied to most building materials including reinforced concrete, cement
render, wet area plasterboard, compressed fibre-cement sheeting, plywood and
particleboard wet area flooring. USE AREAS: Shower Recesses. Wet Areas. Flashings.
Balconies and Decks. Exposed Roof. Walls
.
Water based Latex Rubberized Liquid Membrane:
Wrimco Acrylic is a water based, polymer emulsion waterproofing membrane which incorporates micro fibres thereby internally reinforcing the product. It is a modified Acrylic membrane with the addition of the micro reinforcing fibres. It meets the criteria of AS4858:2004 Wet Area Membranes. It is an elastomeric, environmentally friendly membrane designed for both internal and (non-exposed) external application. It cures to form a durable, odourless, impervious, seamless membrane that resists re-emulsifying after it has fully even if immersed in water. It is available in white, black, grey and blue,minimum quantities apply, does not stain grout or tiles and has excellent resistance to hydrostatic pressure.
Sikalastic
-1K is a one component, flexible, fibre-reinforced mortar, based on cement
modified with special alkali-resistant polymers. It also contains fine fillers,
selected graded aggregates, plus special waterproofing additives to produce a
flexible mortar that is ideal for waterproofing surfaces subject to flexural
strain. Sikalastic -1K is suitable for application by brush, roller, trowel or
spray equipment. Uses:Protection of concrete surfaces according to EN
1504-9, principles 1: protection against penetration (coating); 2: control of
moisture (coatings); and 8 increasing resistivity (coating). Waterproof
protection of concrete structures including tanks, basins, pipes, etc. Waterproofing
external wall surfaces to be backfilled in ground. Internal waterproofing of
walls and floors, in basements. Waterproofing of terraces and balconies over concrete
or prepared existing tiles. Flexible protection coating for reinforced concrete
structures against the effects of de-icing salts, freeze-thaw and carbon
dioxide swell consolidation
.
Sheet Membrane for Basement, Retaining Walls
Wrimco 3mm Torch Sheet Membrane
It is ideal for installation as a roofing or tanking membranes, offering an optimal adhesion on a variety of substrates. It can be used on flat, vertical or pitched surfaces. It is available in 3mm and 4mm plain (either Sand or PE film topside), as well as a 4mm mineral in a natural Slate Grey.
NP180 Base Torch Sheet Membrane
Modified PLUS NP180p/p Base Sheet is designed for use as the base or first ply in a high performance two-ply modified bitumen system, or as a single ply when not exposed, and for fillets and detailing. Main applications are for tanking, balconies and roofing and for waterproofing of planters.
Sopralene Flam 180 Torch Sheet Membrane
It is a high quality, elastomeric, sheet waterproofing membrane composed of Styrene-Butadiene-Styrene (SBS) thermoplastic rubber with non-woven polyester (180g/m2) reinforcement and high quality bitumen. The top and bottom surfaces are covered with a thermofusible plastic film thus facilitating its installation using a propane torch. It is designed to be the base sheet ply in two-ply modified bitumen systems or as a single-layer system when double layers of the material are used at all transitions, drains and corners. Typical applications include decks, tanking, podiums, planters, roofs and bathroom floors.
Retaining walls are very similar to planters but without the bases. They may be critical such as when the other side is a habitable room, or relatively non-critical such as a garden wall to stop the paint cracking off. Here the membrane is on the outside of the wall rather than on the inside but the same principles generally apply as for planters.
New Retaining Walls Construction
A core filled blockwork wall is normally open at the top when waterproofing is required. The first thing to do is to cement flush where the core fill has shrunk and waterproof on top with virtually any membrane to hand as this helps to reduce the porous block from becoming saturated every time it rains.
Liquid applied membranes will only work if the mortar is properly struck and flush. Vertical grade pure urethane such as Multithane HV or bitumen urethanes such as Duroproof PU have the best properties but water based SBR latex, latex bitumen and acrylic/cements are very popular. However torch applied SBS is safest and very long lasting and has the advantage with expansion joints, and also where the face of the blockwork wall is flush with the face of the footing as all that is required is an extra strip over the cold joint.
Membrane can be protected by: Cuspated protection board, XPS Polystryene board, Corflute board and Geotextile drainage sheet.
Where drainage sheet is used, terminate it at the top with a flashing profile to help hold in place and to keep water from travelling between the dimples and the membrane. Wrimco supplies 8mm and 10mm dimpled drainage sheet with integral filter, the 10mm has a higer flow rate and volume.
Repair leaking retaining walls
Assuming it is impractical to excavate the dirt and start all over again, or there was insufficient room to apply the membrane externally, then the wall has to be made watertight from the inside. If blockwork is used and the wall is saturated, then you just have to wait for it to become reasonably dry for the crystalline type coatings and special cements to bond and seal the surface; and similarly with the acrylic cements which will also handle a degree of movement or cracking in the substrate. Water based epoxies (WBE) also find application here either on their own or as a primer for the acrylic cement.
Unfortunately none of the normal membranes such as SBS, APP, PVC or any of the liquid applied membranes or urethane sealants remain adhered to a wall that is permanently damp unless first primed with WBE.
