Four Component Polyurethane Coving and Render Mortar. 

abe.®screed PU CG is a four component polyurethane coving and render mortar which is available in a range of colours. 

Uses

abe.®screed PU CG compliments abe.®screed PU by providing a coving and rendering finish to floor screed applications.

abe.®screed PU CG is a heavy-duty, thermally shock-resistant, hard wearing finish with exceptional chemical resistance.

Typical areas of application include food processing factories, chemical processing plants and pharmaceutical production for use in wet and dry process areas where the floor is subjected to hot fluid spillage, steam cleaning, heavy traffic, impact and chemical attack.

abe.®screed PU CG may be applied from a feather edge to 12 mm thick on vertical applications.

Advantages
  • Impact resistant.
  • Steam cleanable at 9 mm thickness.
  • Seamless and hygienic finish, no crevices where dirt and bacteria can collect.
  • Excellent chemical resistance.
  • Easy to clean and sterilize low maintenance requirement.
  • Anti-slip finish.
  • High abrasion resistance.
  • Low odour during installation.
Colours

abe.®screed PU CG is not colour stable and may discolour on ageing; this is more noticeable in light colours. This will not impair its chemical resistance. Where colour matching is required over more than one order or delivery, a.b.e.®’s Technical Department must be contacted prior to placing the order(s) and the requirement stated clearly on all orders relating to the project(s). The colour range includes dark green, mid grey, mustard, cream, blue and red.

Cautionary Note

Variations in aggregates can cause variations in floor colour. Although every effort is made to keep product colours consistent, it is advisable to use product from the same batch in specific areas. Products can be pre-blended to further limit colour variations.

Properties

Surface Preparation

Substrate must be concrete or polymer modified screed above 25 MPa compressive strength. Totally enclosed heavy shot blasting or scarification should be used to remove all residues to provide a dry, dust-free open textured surface with exposed aggregate. For rendering applications anchor grooves, a minimum 8 mm wide x 8 mm deep, must be formed at all perimeter edges. Generally, groove width and depth is twice the screed thickness. If time constraints (or any other) results in application of screed short of these anchor grooves, then cut new grooves to finish off application and start next application with new grooves.

Substrate Requirements

The concrete substrate must be sound and of sufficient compressive strength (minimum 25 MPa) with a minimum pull off strength of 1.5 MPa. Must be free from rising damp. All contamination must be removed, resulting in a clean, dry, open textured surface with exposed aggregate.

Substrate Movement

All vertical surfaces must be of a rigid construction to resist deflection during the application process.

All movement joints need to be carried through the abe.®screed PU CG and properly sealed. Subject to environmental conditions consult your local a.b.e.® representative for the appropriate sealant type.

Construction joints and cracks may be covered but if substrate movement occurs, the abe.®screed PU CG will reflect the cracked areas subject to large temperature changes. The effect of these changes on the substrate movement must be considered.

Bonding / Priming
All substrates must first be primed with abe® PU/HPU primer (tack coat). One or more coats of abe® PU/HPU primer may be required depending upon the condition and porosity of the substrate. For further information on abe® PU/HPU primer please refer to relevant technical data sheet.
Coving
Use relevant coloured abe.®screed PU CG (coving grade) with appropriate primer for coving and/or vertical applications. For high chemical resistance on these areas, the cured coving may be further sealed with several thin film applications of PU/HPU primer.
Mixing
Kit components are pre-weighed for optimum performance. Never split or proportion kits. The prescribed aggregate must be used as supplied in kit form and not substituted with an alternative. Do not mix by hand. A forced action pan mixer is recommended.

The mixer is to be used at slow speed to avoid air entrapment. To the clean mixing vessel add the base component followed by the liquid pigment and mix for 30 seconds, add the hardener component and mix for approximately 30 seconds until the colour is uniform. Finally whilst mixing slowly add the aggregate component to avoid lumps forming and mix for at least 3 minutes, until the mixture is homogenous and uniform.

Coverage
9.7 kg/m2 at 5 mm thick, excluding waste.
Application
Immediately after mixing, spread the mix to approximate thickness and then finish off with the appropriate plastic trowels (the use of a metal trowel will result in discolouration).

Lay abutting mixes within 10 minutes to ensure neat edge.

The still wet surface may be finished off with a structured roller immediately after trowelling. Late or heavy rolling may induce pin holes.

NOTE: For improved high chemical resistance, the cured coving/rendering may be further sealed with several thin film applications of PU/HPU primer.

Cleaning
Use abe® super brush cleaner before material has dried/cured.
Protection on Completion

Protect surface against traffic and spillage until cured.

Temperature & Relative Humidity

abe.®screed PU CG should be applied at material temperatures between 12 °C and 18 °C and ambient temperatures of 5 °C to 30 °C. Temperatures should not fall below 5 °C in the 24 hours after application.

Model Specifications

A high performance four component polyurethane coving and wall render system.

Supplied in pre-measured packs for ease of onsite mixing.

The Coving and Wall Render system will be abe.®screed PU CG, a four component, polyurethane system comprising a resin and activator blended with a pre-packed filler applied in accordance with a.b.e.® Construction Chemicals’s recommendations including all necessary primers (PU/HPU primer).

Packaging

abe.®screed PU CG is supplied in a 15.35 kg kit, consisting of Base, Hardener, Aggregate and Pigment.

Handling & Storage

All abe.®screed PU CG related products have a shelf life of 12 months if kept in a dry, cool store in the original, unopened packs. If stored at high temperatures and/or high humidity conditions, the shelf life may be reduced.

Health & Safety

Product safety information required for safe use is not included. Before handling, read product and safety data sheets and container labels for safe use, physical and health hazard information. The safety data sheet is available from your local a.b.e.® representative.

Important Note

This data sheet is issued as a guide to the use of the product(s) concerned. Whilst a.b.e.® Construction Chemicals endeavours to ensure that any advice, recommendation, specification or information is accurate and correct, the company cannot – because a.b.e.® has no direct or continuous control over where and how a.b.e.® products are applied – accept any liability either directly or indirectly arising from the use of a.b.e.® products, whether or not in accordance with any advice, specification, recommendation or information given by the company.

Further Information

Where other products are to be used in conjunction with this material, the relevant technical data sheets should be consulted to determine total requirements.

a.b.e.® Construction Chemicals has a wealth of technical and practical experience built up over years in the company’s pursuit of excellence in building and construction technology.

Chemical Properties of Dry Screed

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