Epoxy Screed - Heavy Duty Grade

Product Description

A heavy duty three part resin formulated to provide a topping screed for roofs. The non-porous, non-slip finish is an ideal surface for areas where a high level of protection is required. The rapid strength development enables overcoating within 24-48 hours.

Intended Uses

As with all topping screeds, applied at depths less than 20mm, the general profile or contour of the roof being treated will be followed. The screed allows alterations to 'falls' or 'high spots'. Raising levels the substrate to provide 'falls' should be done using Serba Epoxy Mortar.

Surface Preparation

Surfaces must be clean, dry and free from contamination - grease, oil dirt etc. Remove all loose material and sweep clean. Heavily contaminated areas should be chemically cleaned or power washed to physically remove unsound or badly impregnated sustrate back to a clean base.

Priming

All prepared areas of the substrate must be thoroughly sealed with Serba Tack Primer. On extremely rough or porous surfaces, sealing should be done and allowed to cure overnight prior to the application of the epoxy screed.

Hand Mixing

In a suitable container (plastic), pour in the contents of Pack A (Resin) and Pack B (hardener) and stir well. Slowly pour in the contents of Pack C (Filler) and stir continuously until the entire pack has been added. Stir well until the mix in uniform in colour.

Machine Mixing

Using a Cretangle Mixer or a Metal mixer or similar. Empty the contents of Pack A (resin) into container. Add the contents of Pack B (Hardener) and stir well. When fully mixed, pour into the pan, start the mixer and continue to mix in Pack C (Filler) until the mix is uniform in colour, mix for approx 3 minutes.

Application

Apply the mixed material within minutes of mixing, although the fully mixed material remains useable after 30 minutes @ room temperature. Only apply the material to a well sealed or tacky base. Application is carried out using a trowel.

Properties

Colour Range	Grey, Red, Green, Blue or colour matches for a large quantity order
Packaging	10 kilo and 20 kilo
Coverage	10 kilo will cover 1m² at 5mm
Pot Life	When fully mixed, approximately 30 minuted at 20 °C
Curing Times	Normal cure after 24 hours at 20°C. Extended curing periods at lower temperatures. Do not use at temperatures below freezing.
Shelf Life	12 months in unopened containers stored at normal room temperature.
Chemical Resitance	Resistant to spillages of many chemicals commonly met within industry including petrol, paraffin, alcohols, dilute nitric / sulphuric/ hydrochloric and citric acids, sugar solutions, caustic soda, detergents, bleach solutions etc.
Strength	Tensile: After 24 hrs - 10.34MN/m² After 3 days - 17.20MN/m² After 7 days - 24.12MN/m² Compressive: After 24 hrs - 31.86 MN/m² After 3 days - 50.20MN/m² After 7 days - 91.72MN/m² Flexural: After 3 days - 18.96MN/m² After 7 days - 22.40MN/m²

Health and Safety

As some people find epoxy based products irritant to the skin, all users are recommended to use a barrier cream prior to handling and thoroughly wash hands with soap and water. Avoid contact with skin, eyes and wear protective clothing.

Issue Date August 2002

Chemical Resistant ...

The claims made in this document are made in good faith and are based on exhaustive tests carried out over a long period.
Serba Coatings, their agents and their distributors cannot accept any liability for the behaviour of their materials in individual cases.

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