Sadolin Polyurethane Extra Durable Varnish

Description

Sadolin Polyurethane Extra Durable Varnish offers all the benefits of a water borne varnish – low odour, quick drying and a fast recoat time. The inclusion of combined polymer chemistry gives a tough, hard wearing finish; resistance to stains and spills; an easy to clean surface.

General Timber Advice

• Timber surfaces must be suitably prepared.
• The moisture content should not exceed 18% prior to coating.
• Resinous deposits should be removed.
• Degrease any exposed bare timber by wiping with a clean, lint free cloth dampened with methylated spirits, frequently changing the face of the cloth.
• Allow the solvent to fully evaporate.
• Abrade sound timber surfaces in the direction of the grain using medium/medium fine grade (P180/P240) pads/abrasive paper (nothing metallic), taking care not to damage or scratch across surfaces.
• Remove dust.
• “Knotting agents” should not be used with Sadolin systems.
• Use Sadolin Woodfillers to make good any minor surface defects. General or all purpose fillers are not suitable.
• We recommend the use of non-ferrous screws, nails and fixings. Exposed ferrous items may corrode and break the coating film over time if not suitably primed/treated prior to decorating.

New Timber

• All surfaces must be sound, suitably dry and free from anything that will interfere with the adhesion of the materials to be applied.

Previously Coated Timber

• All surfaces must be sound, suitably dry and free from anything that will interfere with the adhesion of the materials to be applied.
• Remove all defective coatings.
• Organic growths should be treated with a suitable fungicidal solution and removed.
• Remaining sound surfaces should be cleaned with warm water and mild detergent, rinse thoroughly with clean water and allow to dry.
• Lightly abrade in the direction of the grain, taking care not to break the surface coating.
• Remove dust.
• Apply coats as required to clean, prepared, sound surfaces.
• Localised damage, or severe deterioration of coating requires thorough sanding back to sound substrate.
• Work to a suitable edge/end of board, treat as new.

Application

• The final colour and sheen of translucent coatings are dependent on timber species, colour, cut and presence of existing coating amongst other factors.
• We recommend a trial application in an inconspicuous area prior to commencement of work to check for colour accuracy.
• Always intermix (box) packs for colour consistency.
• On new wood: For a clear finish apply 3 coats of Sadolin Polyurethane Extra Durable Varnish. For a coloured base apply 1 coat of Sadolin Classic, allow to fully dry for 72 hours, followed by 3 coats of Sadolin Polyurethane Extra Durable Varnish.
• Maintenance coats 1-2 on suitably clean, prepared, sound surfaces.
• Apply in full flowing coats, laying off in the direction of the grain, ensuring all surfaces and end grains are fully coated.
• For best results use a good quality, synthetic fibre bristle brush.
• Avoid over brushing as this will cause brush marks and result in a poor quality finish.
• Carefully denib between coats using a fine grade nylon abrasive pad or a fine grade (P240 or finer) wet or dry silicone carbide abrasive paper in the direction
  of the grain.
• Do not break through the surface coating.
• Remove all dust.