Oil, Stain or Glaze? The Differences Explained

Oil, stain and glaze are three of the most commonly used wood protection products. They sometimes appear similar, but their behaviour, durability and appearance differ significantly. This guide explains the differences clearly so you can choose the right product for every situation.

1. What is oil?

How it works

• penetrates deeply into the wood

• forms no film

• nourishes and stabilises the surface

• preserves a natural appearance

Properties

• highly vapour‑open

• very easy to maintain

• limited UV protection (pigment improves this)

Best applications

• cladding

• decking

• garden furniture

• interior wood

2. What is stain?

How it works

• forms a semi‑film‑forming layer

• protects against UV and moisture

• available in transparent, semi‑transparent and opaque versions

Properties

• colourfast

• good UV filtering

• less vapour‑open than oil

Best applications

• window frames

• doors

• fences

• exterior cladding

3. What is glaze (lazur)?

How it works

• forms a thin film

• keeps the wood grain visible

• provides decorative and UV protection

Properties

• thin, flexible layer

• good UV filtering

• less suitable for horizontal surfaces

Best applications

• façades

• joinery

• decorative elements

• interior applications

4. Comparison Table

5. Decision Tree: Which Product Should You Choose?

A. Do you want a natural, matte appearance?

→ Yes → Oil → No → Go to B

B. Does the wood need strong UV protection?

→ Yes → Go to C → No → Oil or Glaze

C. Do you want a semi‑opaque or opaque colour?

→ Yes → Stain → No → Glaze

D. Is the surface horizontal and walkable?

→ Yes → Oil (never stain or glaze) → No → Go to E

E. Is low maintenance important?

→ Yes → Stain → No → Oil or Glaze

6. Summary

• Oil → deep penetration, natural look, ideal for cladding and decking

• Stain → semi‑film, colourfast, perfect for joinery and fences

• Glaze → thin film, decorative, great for façades and detailed woodwork

Your choice depends on appearance, maintenance expectations, UV exposure and whether the surface is horizontal or vertical.