FEATURES

• Receives finishes after 1½ hours regardless of thickness
• Slump free - ideal for vertical and horizontal repairs
• Ideal for the rapid repair of internal concrete, screeds, renders and concrete steps
• Other applications include forming ramps, falls and coves, patching around fittings/pipework, and filling cracks and gaps

USE

R - 61F is ideal for : - Repairing and refacing internal concrete - stairtreads and risers, cement and sand screeds, concrete floors.
- Filling and patching cracks in walls, ceilings and soffits.
- Making good around pipework, door and window frames.
- Forming ramps from a feather edge to normal screed thicknesses.
- Forming coves.
- If using R - 61F as a wearing surface a suitable covering / coating is required.

SUBSTRATE PREPARATION

R - 61F can be applied to dry or moist screeds providing they are set and hardened and the surface is sound and free of dust, grease, oil and other surface contamination. Worn or trafficked surfaces should be abraded (wire brush, angle grinder etc.) to remove contamination and expose a clean surface to ensure good adhesion. Very dense, smooth impervious surfaces should be primed with CLI N 18 Primer. Priming is not usually necessary on concrete, cement / sand, brickwork etc, unless the surface is extremely porous. Direct to earth sub-floors must have an effective damp-proof membrane. Such as CLI SLP - 14E Surface Damp Proof Membrane.

MIXING

The R - 61F powder is added to the required amount of water in a clean mixing container and mixed thoroughly to obtain a lump-free and slump-resistant mortar.

The mix proportions are:-
11kg R - 61F powder to 2½litres of water: i.e. approximately 3 part powder to 1 part water by volume.

Avoid using too much water. The mixed mortar has a working time of 10 to 15 minutes at 27±1°C, this time being extended at lower, and reduced at higher temperatures.

For thicknesses over 5mm, but not exceeding 20mm, the R - 61F mortar can be bulked out with 1/3 volume of sharp sand (0 - 5 mm grading), or up to an equal volume of 3 mm single sized aggregate / chippings. For localised thicknesses exceeding 20 mm, e.g. filling deep holes and cracks, incorporate up to an equal volume of 10 mm single sized coarse aggregate, in the R - 61F mortar.

APPLICATION

Repairs

Apply the mortar with a trowel to holes, cracks and damaged areas, ensuring that the mortar "wets" the surface by trowelling in firmly, leaving the repair proud. After about 15 minutes trim off excess and finish off with a wet trowel, sponge or sponge float to obtain a smooth surface. As soon as the R - 61F repair has hardened, the surface of the floor, stairtread etc., can be levelled, if necessary, with an CLI sub-floor compound.

Smoothing and Refacing

Apply the mixed mortar with a trowel to the required thickness taking into account the short working time. The material may be finished with a wet trowel after 15 to 20 minutes to provide a finish suitable for direct application of floor covering. High aggregate content mixes may require a second application of 'neat' R - 61F. Apply at temperatures above 5°C.

CLEANING

R - 61F can be removed from tools and equipment by washing in clean water immediately after use. Any hardened material will need to be removed mechanically.

PROPERTIES

The values shown are typical of results obtained in the laboratory at 27 ± 1ºC. Actual performance values obtained on site may vary from those quoted.

CHARACTERISTICS

COVERAGE ESTIMATES

NOTE: These figures are theoretical, due to the wastages and the variety and nature of substrates practical coverage figures may be reduced.

STORAGE AND SHELF LIFE

R - 61F must be stored in unopened packaging, clear of the ground in cool dry conditions and be protected from excessive draught. If stored Correctly, as detailed above, the shelf life of this product is 12 months from the date shown on the packaging.

PRECAUTIONS

R - 61F is considered non-hazardous in normal usage. The presence of cement in the product gives an alkaline mortar which may cause some local irritation if prolonged contact with the skin takes place. Care should be taken to avoid inhalation or ingestion of dust and prevent contact with the eyes.

DISPOSAL / SPILLAGE

Spillage of any of the component products should be absorbed onto sand or other inert materials and transferred to a suitable disposable vessel. Disposal of such spillage or empty packaging should be in accordance with local waste disposal authority regulations.

CONDITIONS OF SALE

Sold subject to the Company's conditions of sale which are available on request.

NOTE

The information supplied in this datasheet is based upon extensive experience and is given in good faith in order to help you. Our Company policy is one of continuous Research and Development; we therefore reserve the right to update this information at any time without prior notice. We also guarantee the consistent high quality of our products; however as we have no control over site conditions or the execution of the work, we accept no liability for any loss or damage which may arise as a result thereof.