Ideal for Preventing Lateral Damp through Soil.
Latseal is a pre-mixed formulation of a plastic modified hydraulically setting cement. When mixed with diluted Bondaid Plus and applied to the masonry substrate, silicate salts form at the interacting faces. These salts enter and fill the pores and capillaries of the substrate, forming a monolithic bond that blocks the passage of water and becomes an integral part of
the structure. These properties make Latseal the ideal water-proofing solution for a wide range of situations from reservoirs to tunnels to basements – this data sheet deals only with its use in preventing the ingress of damp through soil-retaining walls. Data sheets covering other applications are available.
Latseal Slurry is ideal for resisting Lateral damp above ground. It can be used for retaining walls, protection of split levels within properties as well as external wall surfaces immediately below the floor slab. It can also be used on boundary walls where no dpc is fitted and where walls are to be plastered.
Latseal should be applied before plastering takes place and before windows, linings, staircases, radiators, brackets, wires, pipes, electrical sockets etc… are fitted.
Preparation of the Substrate
Latseal should be applied only to good, sound substrates.
Pre-dilute Bondaid Plus at a ratio of 1:4 with clean water (Bondaid Plus supplied as part of the Latseal Waterproofing Kit is supplied ready diluted - no further dilution is necessary). Using a clean container, slowly add 25kg Latseal (powder) to 6-8 litres of the diluted Bondaid Plus whilst mixing, until a smooth, workable consistency is achieved. It is possible to mix
Latseal by hand, however, using a mechanical mixing paddle will ensure better consistency.
Wherever there is a chance that the SWS system could come under significant levels of hydrostatic pressure, a FILLET SEAL should be installed as part of the system. When in doubt, ALWAYS install a Fillet Seal.
First Coat – Prime the substrate by lightly dampening the surface. The first full coat can be applied using a hard brisle brush to a thickness of approximately 3mm using horizontal strokes. Where severe dampness is being covered, a few weak spots may be identifiable after the first full coat has dried. Go over the areas in question, allowing a sufficient overlap onto the surrounding drier areas.
Second Coat – Allow the first full coat to dry overnight. Apply the second coat in the same fashion as the first coat to a thickness of approximately 2mm using vertical strokes. Where severe dampness is being covered, a few weak spots may be identifiable after the second coat has dried. Should this occur, a third coat of Latseal should be applied over the
areas in question, allowing a sufficient overlap onto the surrounding drier areas.
Ideally, the waterproofed surface should not be punctured as this creates a point of weakness. Where it is not possible to avoid a fixing, special procedures should be followed (available on request).
*NOTE: Where water pressure exists, the waterproofed surface should not be punctured at all.
Depending on the substrate being covered, 1 x 25kg bag of Latseal will cover approximately 12m²-16m² per coat i.e. 6-8m² for two coats.
Dispose in accordance with local regulations.
Store in a cool, dry place.
Health and Safety
Read material safety data sheet, available on request.