Elastomeric SBS Modified Liquid Applied Waterproofing
BITUFLEX PLUS is an SBS modified bituminous liquid membrane composed of elastomers, bitumen, resins and additives dissolve in solvent. It is a thixotropic paste easily applicable horizontally and vertically. Once dried it forms an elastic, continuous, waterproofing membrane resistant against thermal changes, UV rays and acid rains.
n ASTM C 309 – 96
n BS 6949:1991
1.1 kg/m² per mm of thickness
BITUFLEX PLUS is supplied in metallic containers of 20 liter and 200 liter drums.
Keep in covered area away from direct sunlight and in tightly sealed containers. In these conditions BITUFLEX PLUS maintains its characteristics for 12 months.
The surface of the concrete shall be sound, clean and uncontaminated.
This preparation shall be such as to leave a sound exposed concrete surface free from dust, loose particles and any deleterious matter. If the concrete surface is defective or has laitance, it must be cut back to a sound base.
Oil, grease, varnishes, rust, dust and mould on metal surfaces shall be removed by wire or stiff brushing and grit blasting then wiped with SOLVENTE prior to priming.
Moss and lichen must be removed physically followed by treatment with fungicidal wash. After treatment, it must be washed down thoroughly with clean water and allow to dry.
Highly porous concrete or concrete containing microsilica will require priming with a coat of thin coat of BITUFLEX PLUS. The primer shall be applied at a rate of 5-6 m²/L and left to achieve a tack-free condition to dry before applying the topcoat. A second coat of primer may be required if the substrate is excessively porous.
Two coats of BITUFLEX PLUS shall be applied by brush or squeegee at a rate of 0.87 m2/liter giving a total dry film thickness of 2.0mm thick membrane. For large structural areas, variable mechanical loads, and moving cracks, fibre mesh shall be fixed between the coats.
The two coats must be applied at right angles to one another with a minimum of 6 hour intervals between each application at 25°C. Each coat must be completely dry before the next coat is applied.
A third coat can be applied blinded with clean sand as a protection against foot traffic and/or to provide a good key for top screed.
Do not apply subsequent applications if the membrane is punctured or damaged.
BITUFLEX PLUS is a solvent based flammable product. Keep away from fire sources during application. Protect eyes during application by using goggles. Splashes to eyes should be washed immediately with abundant water and seek medical treatment.
The information in this Technical Data Sheet is based on Colmef Monneli’s experience. Colmef Monneli does not accept any liability arising from the use of its products as it has no direct or continuous control over where or how its products are applied. All Colmef Monneli’s Data Sheets are updates on regular basis. It is the user’s responsibility to obtain the latest version.
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