Varnishes

About Varnishes

Varnishes are essential protective finishes that enhance and preserve wood surfaces, providing a durable barrier against moisture, UV damage, scratches and everyday wear. Available in multiple sheen levels from high gloss to matt, varnishes penetrate and seal wood whilst highlighting its natural grain and colour. MyToolShed.co.uk stocks a comprehensive range of interior and exterior varnishes suitable for furniture, flooring, joinery, marine applications and decorative woodwork projects.

Whether you're a professional decorator, joiner or DIY enthusiast, choosing the correct varnish finish is crucial for both aesthetics and longevity. Our selection includes specialist floor and yacht varnishes formulated for high-traffic and harsh environments, alongside traditional wood varnishes in gloss, satin and matt finishes. All varnishes at MyToolShed.co.uk meet rigorous quality standards, delivering professional results for both trade and domestic applications.

Applications

Varnishes are widely used across numerous trades and applications:

• Joiners and carpenters – protecting bespoke joinery, staircases, doors and window frames
• Decorators and painters – finishing furniture, cabinets and interior woodwork
• Flooring specialists – sealing hardwood, parquet and engineered wood floors
• Boat builders and marine trades – weatherproofing decks, spars and wooden vessels
• Shopfitters – finishing retail fixtures and commercial interiors
• DIY enthusiasts – renovating furniture and protecting garden woodwork
• Restoration professionals – preserving antique and period timber

Choosing The Right Varnishes

Selecting the appropriate varnish depends on several key factors:

• Location: Interior varnishes differ from exterior formulations. Marine and yacht varnishes offer superior UV and water resistance for outdoor or marine environments
• Sheen level: Gloss varnishes provide high shine and maximum durability, satin offers a mid-sheen balance, whilst matt varnish delivers a contemporary, low-lustre finish
• Traffic levels: Floor varnishes contain harder resins designed to withstand heavy footfall and abrasion
• Wood type: Different timbers absorb varnish at varying rates – hardwoods typically require fewer coats than softwoods
• Application method: Consider whether you'll brush, roller or spray – some varnishes are formulated specifically for certain application techniques
• Drying time: Fast-dry formulations suit time-sensitive projects, whilst traditional varnishes allow better flow and self-levelling

Safety Information

Many varnishes contain flammable solvents and produce strong fumes during application. Always work in well-ventilated areas and avoid naked flames or sparks. Wear appropriate PPE including gloves and eye protection when handling. Store varnishes in cool, dry conditions away from heat sources and direct sunlight. Dispose of used brushes, rags and containers responsibly according to local regulations, as solvent-soaked materials can pose fire hazards.

Frequently Asked Questions

How many coats of varnish should I apply?

Most applications require a minimum of three coats – two base coats and one finishing coat. Floor varnishes often benefit from four or more coats for enhanced durability. Always sand lightly between coats with fine-grade abrasive paper for optimal adhesion.

What's the difference between varnish and polyurethane?

Polyurethane is actually a type of modern varnish containing plastic resins that offer superior durability and water resistance. Traditional varnishes use natural resins and oils, providing a warmer finish but less protection in demanding environments.

Can I apply varnish over stained wood?

Yes, varnish works excellently over wood stain once the stain has fully dried. Ensure the stained surface is clean, dry and lightly sanded before applying your first coat of varnish for best results.