Water-repellent and more stable
As it cools, linseed oil bonds with the wood pores. Less moisture uptake — less warping and cracking through year-round temperature swings.
Puuseppmeister · protection that reaches deep
Wood heat treatment & deck boards
Deck boards heat-oiled in an autoclave with linseed oil — protection into the pores, not just the surface.
Deck boards only
Installation on request
Autoclave linseed oil
From €22.32/m²
Why heat-oil treatment
Protection inside the board, not only on top
Autoclave heat-oiling gives deck boards long-lasting protection without damaging the natural wood structure.
We use linseed oil, driven into the board pores under vacuum and pressure at up to +65 °C. The result is a water-repellent, UV-tougher and mould-resistant deck board that handles Estonian rain, snow and sun better than a single surface oiling.
- Autoclave linseed oilVacuum and heat carry the oil into the pores — protection does not stay on the surface alone.
- Deck boards onlyPressure-treated pine, larch, thermopine — we treat before installation.
- Installation on requestNeed the full build? We can construct the whole terrace from one place.
+65 °C
Linseed oil temperature in the autoclave — vacuum and pressure drive oil into the pores
22.32 €
Heat-oiling from €/m² (incl. VAT) — exact price after volume and tone are set
1–2 wks
Typical lead time from order to ready boards
28×120 mm
Most popular grooved deck board in Estonia
What you get
Why autoclave treatment beats surface oiling
Surface oiling mainly coats the outside. In an autoclave the protective agent is driven deep into the board — fuller protection and a longer maintenance interval.
Mould and UV protection
Treatment reduces water absorption and slows greying. Tone holds longer; the terrace stays cleaner.
Natural linseed oil, tone options
A renewable protective agent — wood texture stays visible. Graphite brown, grey, dark brown, brown, dark red or yellowish.
How the work runs
Heat-oiling in four steps
The autoclave method differs from surface deck oiling — the protective agent reaches deep into the board.
1
Deck board selection
We choose suitable timber — spruce, pine, larch or thermowood. Before treatment we check quality and dryness.
2
Heat treatment under vacuum
In the autoclave, linseed oil is heated above +65 °C. Vacuum and pressure help the oil penetrate the board pores.
3
Cooling and fixation
As it cools, the oil locks firmly into the wood. An even, water-repellent protective layer forms.
4
Ready boards or installation
We check tone uniformity and coverage. If needed we install the terrace — see terrace construction.
Material and sizes
Which deck boards suit heat-oiling?
Heat-oiling is ordered for pressure-treated pine AB-grade boards, larch, thermopine or other outdoor timber. On the Estonian market the most common sizes are 28×95 mm and 28×120 mm.
| Profile | Character | Typical size |
|---|---|---|
| Grooved | Groove on one face — water runs off, less slip. Most common choice for home terraces. | 28×95 or 28×120 mm |
| Wide deck plank | Wider and heavier, often brown-treated. Suits higher-load terraces and steps. | Heavier profile |
| Double longitudinal groove | Grooves on both faces — water clears faster, boards dry more evenly. | Often 28×120 mm |
Guide prices for pressure-treated boards
Pressure-treated boards priced per linear metre (lm); heat-oiling calculated per m². Exact quote after profile and volume are confirmed.
| Thickness | Width | Price approx. |
|---|---|---|
| 28 mm | 95 mm | ca €1.70 |
| 28 mm | 120 mm | ca €2.15 |
| 28 mm | 145 mm | ca €2.59 |
| 33 mm | 95 mm | ca €2.00 |
| 33 mm | 120 mm | ca €2.53 |
| Thickness | Width | Price approx. |
|---|---|---|
| 28 mm | 95 mm | ca €1.78 |
| 28 mm | 120 mm | ca €2.25 |
| 28 mm | 145 mm | ca €2.72 |
| 33 mm | 95 mm | ca €2.10 |
| 33 mm | 120 mm | ca €2.65 |
UC3 treatment and AB grade
UC3 means outdoor protection without direct ground contact — for deck boards and railings. AB grade refers to wood quality: fewer knots, more even profile. Green treatment gives the classic green-yellow tone; brown suits architectural terraces better.
Standard lengths: 3600, 3900 and 4200 mm. 4800 mm on order — fewer joints. Heat-oiling for the same boards from €22.32/m² (incl. VAT). Installation, transport and custom sizes quoted separately. Order from the shop or request a quote.
Comparison
Pressure-treated vs heat-oiled deck board
| Property | Pressure-treated board | Heat-oiled board |
|---|---|---|
| Treatment | Chemical impregnation at production (UC3) | Autoclave linseed oil vacuum treatment |
| Protection | Good value for durability | Protection driven deep into the wood |
| Maintenance | Regular oiling | Longer maintenance interval |
| Tone | Green or brown impregnation | Richer tone range (graphite brown, grey and more) |
Samples
Heat-oiled boards and profiles
Click an image to enlarge.
FAQ
Frequently asked questions
What is a heat-oiled deck board?
A deck board treated in an autoclave with linseed oil. Vacuum and heat drive the oil into the wood pores — the result is a water-repellent, UV-tougher surface.
How does heat-oiling differ from regular deck oiling?
Surface oiling mainly coats the outside. In an autoclave the protective agent is driven deep into the board — protection is more thorough and longer-lasting.
Which deck board size is most popular?
28×120 mm grooved deck board is the most common in Estonia — a strong balance of price, durability and ease of installation. 28×95 mm suits smaller terraces.
What does UC3 treatment mean?
UC3 is the treatment class for outdoor timber (decks, railings) without direct ground contact. AB grade marks wood quality — fewer knots, more even surface.
What is the difference between UC3 and thermally modified wood?
UC3 is chemical impregnation. Thermally modified wood is heat-treated without additives — more dimensionally stable, even dark tone, longer service life. Heat-oiling is separate: pressure-treated or other boards get deep linseed oil treatment in an autoclave.
Which tones are available?
Graphite brown, grey, dark brown, brown, dark red and yellowish / natural.
How much does heat-oiling cost?
Price is calculated by m², wood species and tone. Treatment from about €22.32/m² (incl. VAT). Exact quote after your enquiry.
How long does treatment take?
Usually 1–2 weeks from order to ready deck boards. Exact schedule depends on volume.
Can you treat an already installed terrace?
The surface must be clean and dry before treatment. Usually it is better to treat boards before installation — we advise per project. For maintenance of an installed terrace, see also terrace oiling.
Do you also install terraces?
Yes — we provide terrace construction, so you get the full build from one team.
See also
Related services and shop
Need heat-oiled deck boards?
Tell us board species, area (m²) and preferred tone — we usually send a quote within 1–2 business days.
- Autoclave linseed oil treatment
- Usually reply within 24 h
- Installation with the terrace
Or write: info@puuseppmeister.ee