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Phoenix Chemicals since its inception has established a name for itself in the construction industry with a wide range of proven and time-tested products. With a special focus on quality, technology, and developing long-term relationships with clients, the organization has developed a track record of excellence.

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PU TopCoat

Product Overview

PU TopCoat - Aliphatic Polyurethane Modified Waterproofing Membrane

PU TopCoat is a high-performance, ready-to-use, cold-applied, single-component, elastomeric liquid waterproofing membrane based on aliphatic polyurethane modified bitumen emulsion. It forms a seamless, highly elastic, and durable film that adheres well to substrates like concrete, cement blocks, wood, and existing roof felts. PU TopCoat is highly resistant to chlorides and sulphates commonly found in soil and offers excellent UV resistance and long-term ageing stability.

Features

Uses & Features

Uses

  • New roofs
  • Balconies, terraces, parking garages, asbestos, and concrete roofs
  • Industrial washrooms and showers
  • Water reservoirs and swimming pools
  • Foundations, cellar walls, retaining walls, and bridge abutments
  • Refurbishing old waterproofing systems, including torch-on membranes
  • Faced damp proofing
  • Waterproofing/curing membrane and protective coating for substructures

Features

  • Single-component and cold-applied
  • Excellent UV resistance and long-term ageing stability
  • Highly flexible cured membranes, even at extreme temperatures (-25°C to 100°C)
  • Excellent vapor barrier
  • Easy to use
  • Non-flammable and non-toxic
  • Environmentally friendly
  • Resistant to chlorides and sulphates commonly present in soil
  • Compatible with cementitious tiling adhesive
Technical Details

Typical Product Characteristics

Sr. No. Parameters Specifications
1 Appearance Thixotropic Black Emulsion
2 Rubber Content 65%
3 Elongation (ASTM D412) 900%
4 Tensile Strength (ASTM D 412) 2 MPa
5 Specific Gravity 1.2
6 UV & Ozone Stability Excellent
7 Temperature Resistance -25°C to 100°C
8 Touch Dry 2 – 3 Hours
9 pH Value >9
ElastoBond product image
Properties

Properties of Dry Film

  • Softening Point R & B (ASTM D36-84): >120°C
  • Water Vapour Permeability (ASTM E96-92): >0.15 g/m²/day
  • Elongation at Break (ASTM D412): >900%
  • Recovery at 350% Elongation (ASTM D412): >50%
  • Resistance to Water (ASTM D2939): No blistering or re-emulsification
  • Protection Against Ground Water: As per BS 102 Code of Practice
  • Curing Membrane: ASTM C 309:1998
Application

Surface Preparation & Application

Surface Preparation

All surfaces should be sound, clean, and free from contaminants. Absorbent surfaces like concrete should preferably be dampened with water. In kitchens, toilets, and other wet areas, all openings should be properly sealed, and weak points such as cracks or around pipes should be reinforced with woven fiberglass mesh between two coats of PU TopCoat.

Application

PU TopCoat can be applied by brush, roller, or squeegee. Hot, dry, or very porous substrates should be dampened with clean water prior to application. When two or more coats are required, ensure the preceding coat is fully dry before applying the successive coat, which should be applied at a right angle to the previous coat. PU TopCoat can also act as a non-degradable curing membrane for concrete substructures immediately after mold removal.

Application Details

Application Rate & Coverage

Application Rate

  • Primer: 1 part PU TopCoat + 1 part water
  • First Coat: PU TopCoat diluted with up to 20% water (max 4 liters per 20 kg bucket)
  • Second Coat: PU TopCoat diluted with up to 10% water (max 2 liters per 20 kg bucket)

Coverage

  • Primer: 0.25 kg/m²/coat
  • Base Coat: 0.5 kg/m²/coat
  • Top Coat: 0.5 kg/m²/coat
Details

Layer Thickness, Packing, Storage & Cleaning

Layer Thickness

Recommended thickness: 1.2 mm. For higher performance, apply glass fiber reinforcement between two coats of PU TopCoat.

Packing

Available in 20 kg containers.

Storage & Shelf Life

Store away from direct sunlight under normal warehouse conditions in tightly closed containers. Shelf life is 12 months from the date of manufacture in unopened factory-packed drums.

Cleaning

Tools may be cleaned with water as long as the product is wet. Once dry, use mechanical means only.

Health & Safety

Use rubber hand gloves, safety shoes, and safety goggles while handling. Avoid skin and eye contact. If contact occurs, wash with plenty of water and seek medical attention immediately.

Resources

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Product Brochure

Learn more about PU TopCoat with our detailed product brochure.

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