POLYURETHANE BASED ELASTOMERIC WATERPROOFING COATING
Mak Elastothane EMB is a liquid applied, moisture cured, high tensile polyurethane modified, solvent based elastomeric membrane coating. Mak Elastothane EMB when applied on a surface, gives a continuous monolithic film which is rubbery and elastic in nature. The film cures by reaction with atmospheric moisture to give a tough elastomeric waterproof membrane.
Mak Elastothane EMB conforms to the requirements of ASTM C-836 and ASTM C-898
Area of Application
The high elasticity, excellent bond strength with concrete and other substrates, low water permeability of Mak Elastothane EMB makes it ideal membrane coating for a wide range ofwater / vapour proofing applications such as:
- Foundations, Basements, Lift
- Car decks,
- Roof, terraces, Balconies,
- Sewage works and Sunken
The excellent chemical resistance of Mak Elastothane EMB is used as a barrier coating for any part of the external or internal faces of the structures where high degree of waterproofing is required.
Packaging: 20kg.
Consumption: 1.6-1.8 kg/sqm in two coats. It may vary according to the condition of the surface.
Application Procedure
Surface Preparation:
- Clean the surface thoroughly with wire brush, remove all dust, dirt, foreign Particles, fungi, etc.
- Allow surface to be completely Do not apply Mak Elastothane EMB on damp surface.
- All the cracks/voids shall be sealed with rubberized Mak Sealing Compound or Mak Crete MWP mixed with cement and sand.
- Ensure provision of slope in the gradient of 1:100 towards drain by laying PCC admixed with integral waterproofing compound, Mak Plast preferably with galvanized chicken wire mesh.
- Provide fillet 75 mm x 75 mm coving made out of PMC mortar as above, using Mak SBR Latex as bond coat.
Material Preparation:
- Skin formation may happen on the top of material during humid condition. In that event, cut skin from the periphery of the container and remove
- Stir Mak Elastothane EMB by a slow speed mixture fitted with a suitable mixing paddle to ensure a homogenous mix.
- Allow the entrapped air to escape
- Consume within 4 hours of opening the container
Material Application:
- Apply Mak PU Primer on the entire surface to be Alternatively, dilute Mak Elastothane EMB in the ratio of 1:1 with either Xyleneor Toluene. Allow the primerto dry.
- Apply Mak Elastothane EMB by brush or spray @ 500gms to 1kg/sqm on the entire surface and up to 300 mm high on parapet Allow it to dry.
- Apply second coat of Mak Elastothane EMB @ 500gms to 1kg/sqm to achieve total dry film thickness of 5mm.
- Reinforcement of Non-woven Polyester or Glass fiber of 40-50gsm may be provided between the layers for improved tensile
- Extend water proofing treatment upto 300 mm and terminate into groove on the parapet Fill the groove with Polymer modified mortar.
- Minimum 25mm thick wearing course of M15 grade reinforced with chicken wire mesh should be done within 7 days of curing as the coating is not UV resistant.
- Grooves of 6mm x 6mm must be cut on the wearing course in panels of 1.2m x 1.2m and filled with Mak Polyseal Polysulphide sealant
Storage:
Store in cool and dry place. Lid of the container should be properly closed after use. In very cold conditions store inside. Do not attempt to thin.
Once opened Mak Elastothane EMB will start to cure and a skin will form, even in the resealed cans. This can be removed if material is used within approximately one month.
Health and Safety:
- Keep away from sources of ignition Do not breathe vapour/spray Ensure good ventilation during application and drying
- In case of eye contact-wash with plenty of clean water and seek medical advice.
- Avoid prolonged skin contact wear suitable protective clothing and gloveswhile handling/applying.
- Remove from skin with mild solvent/hand cleanser and wash with warm soapy water.
