Typical Application

Waterproofing
- Building Roof terraces- flat or sloppy, Corrugated AC sheet roofing, sunken portions   of toilet
- Cement Concrete, steel water storage tanks from outside.

 As protective coating
- Building foundation, pipelines, bituminous coating or tar felt.

Features / Advantages

• Tar-Othane is cold applied, no heating is required
• Chemically curing type, no external curing required
• Tar-Othane can be used an existing bitumen / tar felt for repairing.
• Tar-Othane bonds strongly to cement concrete, asbestos and steel surfaces.
• Tar-Othane remains unaffected by UV light and weathering exposure.
• Tar-Othane is resistant to water, dilute acid, dilute alkali and salt solutions
• Tar-Othane cures to a tough, and abrasion resistant coating
• Tar-Othane is resistant to fungus and micro organism growth.
• Tar-Othane gives excellent adhesion on old bituminous surfaces.

Direction for use

Surface Preparation
Surface preparation is of great importance and will affect the degree of adhesion and life of the coating. The surface should be sound, dry, free of oils, greases and dust. Remove the laitance and loose particles by wire brushing. previously applied bituminous compound / coating should be removed to the extent possible. The new concrete / plaster should be cured with water for minimum 28 days. Open the surface crack of more than 1 mm wide into a joint / groove of size 5 mm x 5 mm or 10mm x 10mm.
Clean the dust by washing it with water. Allow the surface to dry. If the structure is too old and saturated with dirt, treatment with15-20% dilute hydrochloric acid is recommended with thorough wire brushing. Wash the surface with water till neutralization. Allow the surface to dry completely.

Direction for use
A. Waterproof of RCC / IPS / Surki Roof terraces - flat or sloppy and parapet walls

1. Seal the cracks and joints with Polysulphide Sealant with Techseal RDL-940/941 and Primer RDL 942. Allow it to cure for min 24hours.

2. Apply one coat of Techoxy, Water Dilutable Epoxy coating as primer coat. Being water based, it penetrates deeply into the concrete surface, seals the porosity, network of microcracks and strengthens the surface.

3. Apply two coats of Tar-Othane by brush at an interval of 10-12 hours (before mixing part II with part I). Stir well in their individual containers.

4. One coat of aluminum paint or Techcoat 61-P can be applied in order to reflect the sun heat.


B. Waterproofing of Asbestos Sheet roofing
1. Seal the cracks, joints of two sheets and ‘J’ bolts with Polysulphide Sealant, Techseal RDL -940 and Primer RDL 942/947. Allow it to cure for min. 24 hours.

2. Apply one coat of Techoxy, Water Dilutable Epoxy coating as primer coat.

3. Apply one coat of Tar-Othane or two coats of Tar-Othane directly (instead of Techoxy)

4. One coat of aluminum paint can be applied in order to reflect the sun heat.


C. Waterproofing of Toilet Sunken Portions
1. Seal the joints of pipes, walls to floors with Polysulphide Sealant, TECHSEAL RDL- 940 and Primer RDL-942. Allow it to cure for min. 24 hours.

2. Apply one coat of Techoxy, Water Dilutable Epoxy coating as primer coat.

3. Apply one coat of Tar-Othane. Sprinkle clean and dry silica sand on wet coat of Tar-OThane. Press the sand with trowel / hand. Allow it to cure for min. 72 hours before doing brick-bat-coba. Use Integral Waterproofer in Cement Mortar of Brick-Bat-Coba.

4. Fix the tiles with a “Fix-A-Tile” adhesive and “Spectrum Tile Mate” for tile joints.

D. Protection of Pipelines and Metal Storage Tanks from External
1. On steel pipes first apply one coat of Zinc Chromate / Zinc Rich / Red oxide Epoxy resin based anti-corrosive primer.

2. Apply two coats of Tar-Othane at an interval of 10-12 hours.


E. Repairing of Old bituminous coatings / felts
1. The basic bituminous coating / felts should be strong enough. Wire brush the surface to remove loose particles and to make the surface rough.

2. On porous surfaces apply two coats Tar-oThane at an interval of 10-12 hours.

3. For repairing cracks of Tar Felt, wire brush the crack and adjoining area. Clean the dirt and dust. Apply one coat of Tar-Othane when in wet condition place glass fibre tissue. Sheet lengthwise on the crack and press it. Then apply additional one coat of Tar-Othane on tissue sheet.

Over Paintability - Tar-Othane can be overcoated by Techcoat 61-P, white P.U. waterproof coating and Aluminium Paint.

Thinner : Tar-Othane is normally supplied at application viscosity. However 5 to 7% of thinner solvent, Toluene can be used to overcome the problem of quicker drying due to hot substrate and sun heat.

Cleaning : Tools and equipment can be cleaned immediately with solvents like xylene, acetone etc.


Storage And Shelf Life
12 months shelf life if stored between -10° to 35°C in unopened container. After opening it should be used immediately.

Packing 5 Litre., 20 Litre

Precautions:
1. Some people are sensitive to tar, resins, hardeners, solvents, and its vapours, so it is advisable to use hand gloves and goggles.
2. While application, proper ventilation should be provided.
3. Avoid application below 10°C temperature of surface. At low temperatures, drying and curing periods will be prolonged.
4. Avoid application on damp or moist conditions as it will create blister for motion problem.
5. Tar-Othane should not be used for coating interior surface of potable water tanks, as it gives a smell of tar.