Polyvine Heavy Duty Extreme Varnish

Description

Polyvine Heavy Duty Extreme Varnish can be used for interior or exterior use and comes in a Satin or Dead Flat Matt finish. It can be used for Interior wood, worktops, doors and furniture, where high water and UV resistance is required. For exterior use, it can be used on marine, concrete paving, un-glazed tiles, slate, brick and Flagstones. Polyvine Heavy Duty Extreme Varnish creates a Waterproof varnish that dries in minutes and cures in 16 hours to a tough durable finish. It is water-based cross-linked polyurethane with advanced resin technology brings high single pack protection. The latest UV filters and absorbers reduce greying, aging and deterioration of surfaces. Biocides protect against mildew, mould and fungus.

How to use Polyvine Heavy Duty Extreme Varnish

Preparation on External Building materials

1. Clean the surface.
2. To ensure that the Polyvine Heavy Duty Extreme Varnish, the surface must firstly be cleansed of all moss, mould, lichen, carbon deposits, oil stains and airborne dirt.
3. Thoroughly wash the paving using a pressure washer, ideally with an output pressure of 2500 to 3000 psi and a spray lance equipped with a “turbo‐jet” nozzle or specialist rotary attachment designed for cleaning paved surfaces.
4. Alternatively, the surface can be cleaned manually with a max strength patio cleaner and a stiff bristle deck scrubbing brush. Allow to dry.
5. After cleaning (once dry) the paving should be thoroughly sprayed with Biocidal Wash Treatment This is applied by low pressure sprayer (as for weed killer etc.) to the entire paving surface and is left to dry out (do not rinse). This is an extremely important phase in the process because it will greatly reduce the possibility of moss or lichens re‐establishing. The pressure washing process leaves the paving looking clean but the moss root systems and mould/lichen spores are still present in hundreds of microscopic crevices and especially in the joints. Spraying the paving ensures that the paving is sanitised and inert.
6. Note: Some paving materials occasionally exhibit corrosive efflorescence (salting) and where this occurs it can cause coatings to de‐laminate.

Preparation on Timber

1. Where surfaces do not come into contact with abrasion use Polyvine Wood oil.
2. For surfaces subject to abrasion use heavy duty extreme. Ensure the surface to be coated is clean and free from grease, wax or polish.
3. White spirit or sugar soap should be used as cleaning agents. Sugar soap should be rinsed off well with clean water and allowed to dry.
4. If water has been used on bare wood this would raise the grain. The surface then needs to be sanded and vacuumed before coating.
5. Painted wood, must be stripped using a hot air gun or a chemical paint stripper, sanded and cleaned prior to coating.
6. On oily Hardwoods such as Iroko or Oak please note – the open grain texture of Oak will cause film failure. Varnishes are prone to failure when applied to Oak externally and Oily hardwoods like Iroko. Polyvine advise the application of their Wood Oil. The coating integrity cannot be guaranteed on green oak.

Application of Polyvine Heavy Duty Extreme Varnish 

1. Polyvine Heavy Duty Extreme Varnish can be applied by brush, spray or roller.
2. Apply 3 coats . Allow 2 hours in between coats and 24 hours after final coat before full use.
3. Do not use in temperatures below 10 degrees C/50degrees F or in very high humidity. Lower temperatures will slow the final cure time.
4. On porous surfaces dilute the first coat 10% with water.
5. Dead Flat finish For increased durability and stain resistance first apply 3 coats of Heavy Duty Extreme Varnish Satin followed by 1 coat of Heavy Duty Extreme Varnish Dead Flat. This will result in a slightly brighter finish than using Heavy Duty Extreme Varnish Dead Flat only.

Maintenance

Inspect yearly for signs of wear or damage. Clean surface thoroughly and wash of all cleaning solution. A maintenance coat should be applied every 1 / 3 years on exposed areas, 3 / 4 years on less exposed or sheltered areas. New wood can be contaminated during preparation, or in the machine shop. Weathered wood can already have contaminants on the surface. All contaminants and millwork must be removed from the surface by sanding, 80/120 grit for vertical, 60/80 grit for horizontal surfaces. Fungus, pollen or spores not removed and trapped below the clear varnish will discolour the surface of the timber when exposed to moisture. If contamination is suspected treat timber with a proprietary preservative treatment as recommended by the manufacturer. For precoating, fill all joints, Cracks, and nail holes with a good quality Polyurethane or acrylic filler prior to coating Polyvine Heavy Duty Extreme Varnish.

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Please note

• Always apply to a test area before starting work, check for adhesion to the substate.
• Appearance may vary according to the colour and type of wood and the number of coats.
• Apply dead flat finish sparingly and brush out well, over application could result in misting.
• Test dead flat finish for misting over dark colours.
• Do not apply over uncured oils.

COVERAGE – coverage 10-20 sq m per litre

Drying time – 30-60mins recoat time 1-2 hrs. Cure time is 16 hours in ideal conditions. Allow 48 hours before heavy use eg. furniture dragging, and several days before covering with carpet.

STORAGE – Store in unopened containers in a cool dry place away from direct sunlight.

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Health and Safety

Non-hazardous. Ensure good ventilation. Keep out of reach of children. Contact with eyes-wash immediately with warm water. Remove excess from tools and mixing vessels before washing in warm soapy water. Do not empty containers into drains or watercourses

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Safety Data Sheets

• Safety Data