Thermoguard Safewood mattwood Anti-Viral Varnish

Safewood Anti-Viral Mattwood is a clear, matt-finish topcoat designed to provide both fire protection and antimicrobial defence for interior timber. Applied over Thermoguard Fire Varnish Basecoat as part of a certified system, it achieves BS EN Class B s2 d0 fire rating while actively killing coronavirus, flu and harmful bacteria on contact.

Ideal for doors, frames, sills and trim in high-traffic areas such as schools, care homes, hospitals and housing, this advanced varnish delivers a durable, decorative finish with built-in protection. It reduces bacteria by 99% in 4 hours and coronavirus by 93.4% in just 2 hours, according to ISO-approved testing.

Whether you’re upgrading existing timber or working on new installations, Safewood Mattwood is a reliable choice for both fire safety compliance and hygiene-critical environments.

Surface Preparation

• Ensure all wood surfaces are clean, dry and sound

• Remove any loose, flaking or suspect coatings

• Abrade smooth or glossy surfaces with 120-grit abrasive to provide a mechanical key

• Degrease with a suitable cleaner and wipe clean

• Previously varnished surfaces must be well abraded and cleaned thoroughly

• For knotty woods or light shades, treat knots with shellac-free sealer if required

Note: Apply only over Safewood Basecoat or Thermoguard Fire Varnish Basecoat for fire-rated performance.

Technical Data

• Finish: Matt (Clear or woodstain)

• Fire Rating: BS EN Class B s2 d0 (when used over approved basecoat)

• Anti-Viral Performance:

  • 93.4% Coronavirus reduction in 2 hours (ISO 21702)

  • 99% Bacteria reduction in 4 hours (ISO 22196)

• Drying Time:

  • Touch dry: 6 hours

  • Recoatable: 12 hours

• Application Temperature: 5°C to 30°C (Max RH: 75%)

• VOC Content: 16g/l (low)

• Shelf Life: 12 months in unopened container

• Pack Sizes: 10m² & 30m²

• Colour Options: Clear & 11 woodstain shades

• Compliance: UKAS and EOTA accredited fire test lab

Directions for Use

1. Stir thoroughly before use - do not shake

2. Apply by synthetic brush or short-pile gloss roller

3. Maintain a wet edge to avoid lap marks

4. Apply 1–2 coats depending on required protection:

   • 1 coat over Fire Varnish Basecoat for fire protection only

   • 2 coats for full anti-viral and anti-bacterial performance

5. Do not apply if condensation is likely before full drying

6. Clean tools with white spirit immediately after use

Data Sheets / Downloads 

Thermoguard Safewood Mattwood Anti-Viral Varnish - TDS

Thermoguard Safewood Mattwood Anti-Viral Varnish - MSDS

Thermoguard Safewood Mattwood Anti-Viral Varnish - Brochure