F.R.MICRAFLEX - fibre reinforced UV stable, waterproofing membrane
F R MICRAFLEX is a fibre reinforced, UV stable, waterproofing membrane. It provides a tough, seamless membrane without the general use of reinforcement mat other than joints. F R MICRAFLEX bonds to a variety of substrates when applied according to directions. Its resilience remains stable over a large temperature range and allows for considerable movement in bridging cracks.
F R MICRAFLEX provides chemical and mechanical damage resistance due to its high build and high solids characteristics. F R MICRAFLEX when fully cured will withstand ponding water and is resistant to mould, mildew and microbiological attack.
- All substrates must be sound, dry and free of dirt, oil, grease and other contaminants.Defects must be made good to give a smooth surface. New concrete must cure for a minimum of 28 days. New brickwork and render must be left for 7 - 14 days.
- For Internal Wet Areas compliance to the Building Code of Australia (BCA) and AS 3740/ 2004 - Waterproofing to Internal Wet Areas is required. Timber flooring substrates should be avoided. If a timber substrate is unavoidable then over sheeting with 6mm fibre-cement sheet is a preferred option. Substrates should be screw fixed – not nailed.
- Because of the wide variety of substrate types and site conditions it is always advisable to check adhesion to the substrate by testing on a sample area before commencement.
- Seal all joints and gaps with a suitable low modulus polyurethane sealant in accordance with the manufacturers instructions;
- Reinforcing cloth – 150mm width centrally located and wet embedded over joint, is required in all situations where movement may occur. For example: shrinkage or structural cracks, penetrations and outlets,prepared joints or areas of high stress, corners and flanges, joints in sheets, etc.
Most surfaces should be primed with MICROL ACRYLIC PRIMER. Use MICROL SOLVENT PRIMER for bituminous felts, and metal primers for metal. Alternatively prime porous surfaces using FLEXIPRO diluted; 1 part to 2 parts water, allow 1 hour to dry.
- The membrane may be applied by brush or roller.
- Apply multiple coats to achieve the desired thickness and allow to fully dry between coats.
- Material usage should be 1.25 – 1.5 litres per square metre.
- Application should not be started if rain is expected to commence within 12 to 24 hours. If rain damage occurs re-coat damaged sections when dry.
- Water borne membrane products must be allowed to cure completely and in depth prior to the application of tiles or similar products. Because environmental conditions fluctuate it is impossible to be concise when forecasting the curing time of the membrane. A minimum of 7 days must be allowed for external applications in cool, humid or wet weather. Lack of complete curing may result in the membrane re-emulsifying under paving.
- Tile and other paving mediums may be laid over the cured membrane surfaces on a cement mortar bed or with a 2 part water based adhesive.
- Membranes are best laid to falls with suitable drainage allowance.
Clean with water while wet & use paint stripper when cured.
Apply at least 2 coats ensuring a minimum coverage of 1litre per square metre.
F.R. Micraflex is available in 15 litre and 5 litre pails
12 months in dry cool conditions in sealed container
Colour: Grey ; Tensile Strength: U/T Elongations at break = 250 % ; Drying time @ 25°C = 2-4 Days ; Curing Time @ 25°C = 4 Days ; Application Temp: 10°C - 30°C ; Chemical Resistance: Good; Alkalis, Salt Solutions, Bleach, Detergents.