SELAMIX LAJES

TECHNICAL BULLETIN – SELAMIX LAJES

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Characteristics

SELAMIX LAJES is a waterproofing agent, supplied in powder form, in gray color, developed for application on slabs with rustic surfaces, which do not present structural problems and which are not subject to cracking. SELAMIX LAJES performs double fixation, through needling and chemical adhesion. Easy to apply, just mix water in the correct proportion. It has excellent yield per m². After application, SELAMIX LAJES becomes part of the surface. Accepts any type of coating when applied horizontally. For vertical cladding and finishing, a technical assessment of the project must be carried out to verify whether the product meets the necessary requirements.

Use

SELAMIX LAJES is recommended for waterproofing slabs without a subfloor, terraces, balconies, awnings, concrete gutters, window surrounds, water mirrors, floors and walls in cold areas: bathrooms, kitchens and service areas. SELAMIX LAJES can also be applied to water tanks made of bricks, masonry, concrete blocks, stone, cisterns, ground masonry pools, flower boxes, grease traps, basements, elevator shafts, tunnels, retaining walls, pits, manure pits, baldram beams and masonry walls.

Composition

Portland cement, mineral fillers and special additives.

Performance

Minimum consumption of SELAMIX LAJES is 1kg/m²/coat. To prevent humidity, use 3 coats of SELAMIX LAJES. In reservoirs, cisterns, elevator shafts, swimming pools and other forms of water storage, use 4 to 6 coats of SELAMIX LAJES.

Storage

It should be kept at room temperature, in a dry and ventilated place, on pallets.

Shelf life

In its original unbroken packaging, it has a shelf life of 24 months.

Packaging

Plastic package or bucket with 18 kg.

Surface preparation

Clean the surface properly, completely removing loose particles or concrete burrs. The surface must be firm and in good condition, free from dust, grease, mold, mildew or any other contamination that could prevent the normal adhesion of the product. In areas soiled with silt or old concrete, wash well with a brush or high pressure washer. On calfined surfaces, remove 100% of the area. Do not apply SELAMIX LAJES directly on materials with a surface or layer that contain petroleum derivatives, such as: paints, varnishes, asphalt emulsion, asphalt blanket, glue, resin-based waterproofing agents and others, in which case it is necessary to remove them 100% of the area. Never apply SELAMIX LAJES on slabs that have subfloor or cement cream, which must be removed, applying SELAMIX LAJES directly on the concrete of the slab. Do not apply SELAMIX LAJES on smooth surfaces or surfaces with burnt cement, if necessary, 100% of the area must be chipped. For horizontal surfaces, it is important that there is at least 0.5% slope for rainwater runoff. Imperfections in the concrete must be previously corrected with mortar. If there are fissures, cracks, expansion joints, repair them with ELIMINETRINCA first. On walls, with rising damp, remove all plaster at a height of 1.2 m from the baldrame, apply SELAMIX LAJES on the bricks and plaster again, leaving a distance of 1 cm from the floor and fill with SELAMIX LAJES.

Product preparation

Calculate the surface to be waterproofed. Dilute 18kg of SELAMIX LAJES in a maximum of 6 liters of clean water. Mix the product with a mechanical stirrer for 3 to 5 minutes to obtain a dense, lump-free liquid mass. After mixing, let the dough rest for 15 minutes before starting to apply, beat again and after this period, beat the dough every 10 minutes. Prepare only the quantity to be used in each coat, and the excess cannot be used for the next coat. For application on large areas, prepare only the amount of product that you can apply in a maximum period of 1 hour.

Application

Wet the surface well with water, avoiding puddles. Apply SELAMIX LAJES with a broom, passing 8 to 10 times in the same place in an elongated way to close the pores and better compact the product. Once prepared, SELAMIX LAJES must be applied within a maximum of 1 hour. Subsequent coats should be done in the same way, wetting the area and applying the broom repeatedly over the product. SELAMIX LAJES must be applied in cross coats with an interval of 6 hours between applications in normal conditions and 24 hours in humid places or subject to trampling during application, or wait until the product has surface resistance. Do not apply on surfaces with a temperature above 22ºC. Keep the applied area in wet curing during the coats and 48 hours after the last coat is finished, spraying water with a high pressure washer or covering the surface with a plastic sheet. Drying after the last coat is 48 hours of good weather and full cure is 28 days. In water reservoirs for human or animal consumption, wash the surface three times, using water and a multipurpose brush, and discard the first load of water. In fish ponds, check the pH of the water before use.

Comments

Apply SELAMIX LAJES in uniform layers. Excess material applied in corners, depressions or irregularities can cause product cracking and waterproofing failure. Because SELAMIX LAJES is a semi-flexible waterproofing agent, if any cracking occurs in the slab, it may cause the waterproofing layer to break, requiring maintenance in the area that has infiltration problems with ELIMINETRINCA. In areas subject to traffic, wait for at least 5 days to cure after application and perform mechanical protection with a subfloor.

Cleaning

Equipment and tools can be cleaned with water while the product is not dry. After drying, clean the tools mechanically.