Many renovators of period properties are aware of the importance of using breathable paint on masonry, plasterwork, and render. However, it’s less well known that exterior wood also benefits from breathable paint.
Wooden windows, doors, cladding, or structures like fences and sheds all suffer from the wet British climate. Exterior timber naturally absorbs and releases moisture, and sealing under a plastic based non breathable coating can trap moisture. This leads to paint peeling and cracking, and eventually wood rot.
True breathable paints for exterior wood allow timber structures to breathe, keeping wood healthy and paint finish intact. It’s also better for the environment and non toxic for pets and children.
Why Exterior Wood Needs Breathable Paint
Wood is a material designed and manufactured by nature. It expands and contracts as temperatures and humidity fluctuate. Timber structures draw in and release moisture throughout the year.
Using standard petrochemical based gloss or acrylic paints on exterior wood, it creates an impermeable film on top of the timber.
Plastic based paint on wood causes:
- Moisture to become trapped beneath the surface.
- Paint peeling and blistering.
- Softening and decay of timber, particularly in our damp UK climate.
A breathable paint avoids these issues by working with the natural characteristics of timber rather than against them.
What Is Breathable Paint for Wood?
Breathable paint allows water vapour to pass through its film, helping the wood to regulate moisture naturally. True breathable paints contain mineral or natural ingredients like plant oils, lime, and resins instead of plastic polymers.
Key features of breathable paint for wood include:
- Vapour permeability - the paint allows the wood to release retained moisture naturally.
- Durability - resists cracking as timber expands and contracts.
- Eco friendly - sustainable production methods, low or zero VOCs, natural and non toxic ingredients.
- Compatibility - suitable for heritage joinery and modern wooden structures.
Big brand paints often use the term “breathable” in the product name. Always check the product datasheet for vapour permeability. SD values should ideally be 0.5 or lower.
Choosing the Right Breathable Paint for Exterior Wood
When shopping for breathable exterior wood paints, it’s important to understand what characteristics truly breathable paint has.
Check for:
- Breathability - low SD values on the datasheet.
- Natural Ingredients - avoid vinyl or acrylic; look for plant oils, resins, and mineral pigments.
Best Breathable Paints for Exterior Wood
At Greenshop Paints, we’ve selected high performing, eco friendly paints and finishes that protect exterior wood while letting it breathe.
- Auro Paints - German brand offering plant based and eco friendly paints in a range of durable exterior finishes. Choose from 96 colours. Wood stains and oils also available.
- Osmo Oils, Paints & Stains - known for durable interior and exterior oil products, plus oil based paint in a wide colour palette.
- Check out our range of exterior wood paints and stains.
FAQs
What is the best breathable paint for wooden windows and doors?
Auro and Earthborn paints are excellent choices, while Osmo oils are ideal for a natural wood finish with visible grain.
Can I use breathable paint on exterior cladding and fences?
Yes - breathable paints and oils protect large areas of timber, from weatherboarding to garden fencing.
How long does breathable exterior wood paint last?
Most systems last several years before requiring maintenance, though durability depends on exposure and preparation.
Read More: Best Breathable Paint for Lime Plaster | Breathable Paint for Old Houses | What is Distemper Paint | Best breathable paint for cellar walls | Breathable masonry paint | Breathable paint for lime render
Breathable Exterior Wood Paint Works With Natural Timbers
Using breathable paint for exterior wood is one of the best ways to protect timber from the elements while preserving its natural qualities. By working with the wood’s natural movement and moisture cycle, breathable paints ensure a longer-lasting finish and healthier timber.
If you’d like help choosing the right product, contact us for advice, or order a free colour chart to see our full range.
