Cromar Acrypol Metal-Kote is an environmentally friendly, oil based waterproof roof coating. It is specifically formulated for the protective coating or re‐coating of metal roofs, including those which may be suffering from the effects of corrosion.

This particularly affects overlaps, in the case of plastic coated varieties (Plastisol), where the corrosion enters through the unprotected edges, causing widespread damage to the roofing panels. It is a well‐known fact that metal is one of the most difficult surfaces to coat and seal.

Other coating systems are not waterproof, require total rust removal, primers, multiple coats and break down after a short life span. Plastic coated varieties of metal roofing panels (Plastisol) are difficult to overcoat without the use of special primer/sealers.

Metal-Kote can be applied directly in a single coat over the aforementioned surface types, and does not require priming ‐ It seals and waterproofs all metal roofs in just one coat.

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• Features & Benefits
• Surface Preparation
• Application
• Spray Application
• Patch Test
• Cleaning
• Limitations

Features & Benefits

• Seals in One Coat
• Coats Rust with No Priming
• 100% Waterproof Formula
• Outstanding Adhesion
• Temperature range for application 5°C‐35°C. (Do not apply within 3°C of dew point)

Surface Preparation

Mix thoroughly before use, either by stirring or mechanical agitator. Do not thin. Temperature range for application 5°C‐35°C. (Do not apply within 3°C of dew point).

All metal surfaces must first be power washed, taking care not to cause further damage to areas where corrosion has occurred.

Check and tighten or replace loose and rusty metal fasteners. If nails or screws have been used, replace all loose, rusting or failing hardware and use larger fasteners to ensure a tight seal.

Remove loose, flaking rust and rust residue. Loose rust particles that are not removed prior to coating may be trapped in the Metal-Kote and could migrate through the coating, causing discolouration and stains. Wash rusted areas thoroughly. Ensure any existing coatings are firmly adhered to the roof deck or substrate; remove poorly adhered material before coating. Clean off by sweeping, brushing, blowing or water blasting. Remove all traces of mould or mildew by scrubbing the roof with bleach solution or fungicide and rinse thoroughly with water.

In the event of coating non‐weathered or new galvanised steel, copper, aluminium, tin (or if in doubt), these surfaces should be scrubbed with a proprietary detergent and rinsed with water. This process will remove the greasy film that may be present on these surfaces, and, if not removed, would prevent the Metal‐Kote from adhering.

Prior to coating, the surface should be clean, sound and dry. Correct surface preparation is the key to the successful performance of Metal-Kote.

Application

Apply one coat of Metal‐Kote by brush or heavy duty sprayer (best results will be achieved by spraying where possible). Avoid uneven application, especially on corrugated surfaces. If using a brush, be sure the coating is applied uniformly to avoid pooling or puddling in the low spots and/or thin areas on the tops of the corrugation ridges.

Recommended coverage is 1.7m²/litre at 600 microns wet film thickness. Owing to the fact that the Metal‐Kote resin is formulated for immediate bonding, the product sets up quickly, forms an instant watertight barrier and skins over in ½ – 2 hours. Final dry time is dependent on thickness of application, air movement and weather conditions, but on average will take up to 7 days.

Spray Application

Please note metal‐kote is a heavy duty coating – not a paint

Petrol Unit to be changed and cleaned every 5 drums (approximately 150m²) to prevent blocking in the tip. It can take approximately 30‐60 seconds to change the filter and a spare filter is recommended to avoid delay.

For further details on application by spray, please refer to the product data sheet.

Patch Test

Acrypol Products strongly recommend doing a test patch if you have any doubts or questions about the stability of the roof, compatibility of the coating, adhesion or feasibility of repair.

Apply the coating to a small representative section of the roof approximately 30cm². Check for signs of bubbling or blistering immediately after application. Wait until the patch has thoroughly cured, approximately 3‐4 weeks. If there are any signs of bubbling, blistering, lifting, curling or separation, do not use Metal-Kote on that particular application.

Cleaning

Clean tools and equipment with Acrypol cleaner or white spirit.

Limitations

• Metal-Kote should not be used over bituminious or asphalt coated surfaces.
• Air conditioning vents should be sealed for a minimum of 24 hours during and after the application of Metal-Kote.
• It is the user’s responsibility to ensure suitability for use. Safety Data available on request.
• Read the label carefully for essential health and safety information prior to use.