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How To Paint Exterior Woodstained Or Varnished Surfaces

How to paint exterior woodstained or varnished surfaces

Use Zinsser products to paint over previously stained or varnished exterior wood surfaces – our 3-step guide below shows you how to prepare, prime and decorate, in over 350 colours.

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Zinsser Paint Exterior Stained/Varnished Products

The Benefits

Step 1. Surface Preparation

Step 2. Priming

Step 3. Decoration

More Information

Further Reading

Zinsser Paint Exterior Stained/Varnished Products

Zinsser Mould Killer & Remover

Zinsser Universal Degreaser & Cleaner

Zinsser Cover Stain

Zinsser Allcoat Exterior Satin & Gloss

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The Benefits

Stains and varnishes make the surface of exterior wood less porous, creating adhesion issues when painting over them. This can be an issue to businesses conducting routine maintenance or updating properties to new branding colour schemes, such as:

  • Doors
    • Shop entrances
    • Factory and warehouse doorways
    • Fire exits
  • Door surrounds
  • Windows
    • Windowpanes
    • Window ledges
    • Shutters
  • Soffits
  • Facia and beams, such as on Tudor buildings
  • Cladding
  • Handrails

Zinsser listens to contactors and develops new products – or adds features to existing products – to meet their changing needs, delivering world class products that meet “real world” challenges, providing tried and tested solutions to painting problems, such as painting over stained or varnished exterior wood surfaces.

Step 1. Surface Preparation

Ensure surfaces are clean, dry and free from anything that will interfere or affect the adhesion and application of materials and Zinsser products. Use a scraper or a hot air stripper to remove loose and failing material to a sound edge, and feather with a fine-grade abrasive paper.

Prior to painting, the moisture content should not exceed 12%.

Remove all dust as well as all visible signs of organic growth, treating affected areas with Zinsser Mould Killer & Remover in accordance with the manufacturer’s instructions, and allow to dry.

In any areas with remaining sound paint, wash and clean the surface down with Zinsser Universal Degreaser & Cleaner to remove any contaminants, rinsing thoroughly with clean water to remove all residues, and allow to dry.

Fill any cracks and small surface defects with a suitable filler as appropriate, in accordance with the manufacturer’s instructions, allowing it to dry before rubbing down with a fine grade abrasive paper and remove all dust.

Step 2. Priming

Use Zinsser Cover Stain to prime all prepared areas, in accordance with the manufacturer’s instructions, allowing a minimum drying time of 2 hours (in normal drying conditions) before decorating.

Step 3. Decoration

Decorate the prepared and primed surface with two full coats of Zinsser Allcoat Exterior Satin & Gloss, in accordance with the manufacturer’s instructions, and allow one hour (minimum) between coats to dry. Choose from over 350 colours with which to decorate your exterior, previously woodstained or varnished surfaces, matching existing décor and company branding.

Note: it is recommended to stripe coat edges to promote adhesion.

More Information

If you require more advice on painting exterior woodstained or varnished surfaces, give our technical team a call on 0113 2455450 (option 2) or send a message to [email protected].

Further Reading

Exterior Wood Protection Products for Autumn, Summer, Spring and Winter

Wood Oils: A No Nonsense Guide

A Guide to Weatherproofing Your External Woodwork

How To Paint Knotted And Resinous Timber

Exterior Surfaces, And The Products To Clean Them

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