Epoxy Waterproofing

Monneli Epochim PWT

Solvent Free Epoxy Coating for Potable Water Tank

EPOCHIM PWT is mainly used in internal reservoir waterproof coating for potable water, concrete or metal tanks.
It can also be used as an impervious chemical resistant coating for floors and walls in food factories, dairies, canning and bottling factories and breweries.
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Technical Information
Product Description

EPOCHIM PWT is a two component, 100% solids, epoxy protective coating for concrete and steel. The cured film is resistant to corrosion, abrasion and chemical attack and is listed.

  • Approved to use with potable water
  • Eco-friendly - No VOC
  • Waterproof and protective coating with good aesthetic appearance
  • High chemical and abrasion resistance
  • Excellent adhesion to most building materials (concrete, steel) thereby providing maximum corrosion resistance
  • Application friendly
Packaging, Coverage / Consumption

Keep the product in dry and sheltered place at temperature between +5⁰C to +25⁰C. In these conditions and in closed original containers, the product will have a shelf life of 12 months.

Consumption: 5m²/Liter at 200 micron DFT (Dry Film Thickness)

Shelf Life & Storage

Keep the product in dry and sheltered place at temperature between +5⁰C to +25⁰C. In these conditions and in closed original containers, the product will have a shelf life of 12 months.

Technical Properties
Chemical Resistance

Resistant to dilute acids, alkalis, solvents, oils, petrol, effluents, sea water

Service Temperature

-5°C to +80°C

Application Temperature

+5ºC to +35 ºC

Full Cure at 25⁰C

7 days

Initial cure at 25⁰C

24 hours

Pot life at 25⁰C

30 minutes

Adhesion Strength (ASTM D4541)

> 2 N/mm2

Tensile strength (ASTM C307)

11 N/mm2

Flexural strength (ASTM C580)

40 N/mm2

Compressive strength (ASTM C579)

80 N/mm2


8.0 g/L

Mix density at 25⁰C

1.58 kg/L


Liquid coating



Application Information
Instructions for use


Highly porous concrete or concrete containing microsilica must be treated with PRIMER POXY FF, a Solvent-free high performance Epoxy Primer.
In that case the primer should be applied by brush or roller on to the cleaned surface area (particularly hidden surfaces) at a rate of 4-6 m2/L.

The primer should be left to achieve a tack-free condition before applying the top coat. A second coat of primer may be required if the substrate is excessively porous.
In case of Metal substrates, they shall be cleaned by sand blasting up to the white metal, and then treated with one coat of PRIMER POXY FF before the oxidation process occurs.


EPOCHIM PWT is supplied in two pre-weighed components. Thoroughly stir the contents of the base can. Pour component B hardener into Component A pail and mix well with a mechanical jiffytype mixer operated at low speed (200-300rpm).  Scrape the side of the pail to ensure the entire product has been properly mixed.


Apply EPOCHIM PWT immediately after mixing by a shorthanded brush, good quality rollers or by airless spray, to the surface ensuring a continuous coating of uniform thickness.

The second can be applied as soon as the first coat has dried (within 12 to 16 hours), depending on the ambient and surface temperatures. If the over coating time has exceeded, the previous coat must be thoroughly abraded to give an adequate mechanical key & solvent wiped.


All tools used in the preparation and application of EPOCHIM PWT must be cleaned with SOLVENTE 10 before hardening.

Surface Preparation

Concrete Substrates

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. Excess laitance deposits are best removed by light mechanical scrabbling, grinding or grit/captive blasting followed by vacuum cleaning to remove dust debris.
Any blowholes, chipping or similar surface imperfections shall be repaired using EPOFINISH, a solvent free epoxy resin repair mortar. Expansion joints shall be repaired using EPOMORT HS, a High strength solvent free epoxy mortar.
New Concrete or cementitious surfaces should be at least 28 days old and have moisture content not exceeding 5%. Old or existing floor should be refurbished mechanically to ensure clear sound substrate.

With Metal Substrates

All metal substrates should be blast cleaned to achieve a minimum of Sa2 ½ standard of cleanliness, an angular amplitude of at least 75 microns for pedestrian traffic and 100 microns for vehicular traffic. The slurry must be applied over the blasted steel surface immediately. If the standard of the surface falls below Sa2 ½ then the steel must be reblasted.

Additional Information
Health & Safety

The product must be handled with caution. Use gloves, protective creams and goggles to avoid the contact with eyes and skin.

In case of skin contact clean immediately with a resin removing cream, followed by soap and water. In case of contact with eyes, use clean water to wash the eyes and seek doctor medical attention immediately.

If swallowed, seek medical attention immediately.

Important note

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.

additional materials
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Technical Properties Sheet
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Monneli Primer A 16

Synthetic Resin Primer

PRIMER A16 is used for the preventive treatment prior to laying of ceramic tiles with the cement adhesive on gypsum boards. Such application on the supports avoids the chemical reaction between the gypsum sulphates and the cement aluminates contained in the adhesives for ceramic tiles, which in case of humidity presence could provoke breakaway of tiles.
It can be also used at gypsum or very porous supports before painting with acrylic or vinyl paints, to avoid too fast drying.
PRIMER A16 is used on light weight plaster and other porous surfaces such as asbestos boards, on wood, hardboard, chipboard, and so on, before fixing ceramic wall and floor tiles in the usual way.
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