Epifanes-lakkausopas – oikea lakka ja käytännön vinkit
Lauri Koski
A good varnish finish comes from the right system and unhurried work. Even the most expensive varnish will not hide poor preparation, and one Epifanes varnish is not the right choice for every wooden part of a boat. Start with the wood species, movement in the structure and the condition of the existing finish. This guide helps you choose a suitable varnish and find practical ways to achieve an even surface.
The instructions concern wooden boat surfaces above the waterline.
Which Epifanes varnish suits your job?
| Application or goal | A suitable starting point | Remember during application |
|---|---|---|
| Solid wood that moves and traditional wooden boats | Epifanes Clear Varnish / High Gloss | A flexible one-component system; build the film while allowing the required drying intervals. |
| Teak, iroko and oak | Epifanes Woodfinish Gloss | Thorough cleaning is essential. The need for intermediate sanding depends on the recoating time. |
| Rapid build-up of filling and base coats | Epifanes PP Varnish Extra and a compatible finishing varnish | PP is a two-component product, but its properties differ from hard PU varnish. Choose the complete combination from the manufacturer's system. |
| Dimensionally stable plywood or laminated structures | Epifanes Poly-urethane Clear Gloss | A hard two-component finish needs a suitable, sufficiently stable substrate. |
| A faster-drying semi-gloss treatment | Rapidclear or teak-tinted Rapidcoat | The semi-gloss result differs from a traditional high-gloss varnish finish. |
One or two components? Solid wood that moves needs flexibility; dimensionally stable plywood permits a harder system. The number of components alone is not decisive: the manufacturer also uses flexible PP Varnish Extra in combinations finished with Clear Varnish. Do not transfer the suitability of one two-component product to another.
Practical tips for a smoother varnish finish
1. Keep a good brush exclusively for varnishing
Choose a soft, good-quality varnish brush whose bristles level the varnish gently. Check that it is not shedding before starting. Try the tool on scrap of the same wood species first: you will also see the wood colour and how the varnish flows out. Clean the tool according to the product instructions and keep it free of dust.
2. Work in small areas and stop tipping off in time
Divide a long handrail or large panel into manageable areas beforehand. Apply the varnish evenly and finish with a light stroke along the grain. Move to the next area before the previous edge starts to set. Once the film becomes tacky, do not return to correct a single brush mark: repeated working can leave a more visible mark than the original imperfection.
3. Choose the time around drying, not just free time
Do not start outdoors simply because the rain has stopped. The wood and old film must be dry. Avoid direct sunlight and strong wind. Ideally, let the varnish, wood and workspace reach similar temperatures before starting. Plan so that the fresh finish will not be exposed to evening dew before drying sufficiently. Working under cover makes conditions easier to control.
4. Remove dust before opening the varnish tin
Sand, vacuum and clean the surroundings before varnishing. Do not sand nearby while someone else varnishes. Have a clean working pot ready and close the main tin while working. Small working batches avoid repeatedly exposing the whole tin to dust and evaporation. Mix a two-component product at its own specified ratio and prepare only as much as you can apply within its pot life.
5. Inspect the surface in raking light
Raking light reveals dry patches, runs and uneven application better than light directly from above. Check edges and vertical surfaces as you apply. Do not try to build the entire protective film in one thick pass: several properly applied coats are easier to control.
Roller or brush – what about roll & tip?
The Epifanes Clear Varnish data sheet recommends a soft, long-haired brush. Roller application is not recommended there because of the required wet film thickness. A good brush with a light final stroke along the grain is therefore the practical starting point for this varnish.
Roll & tip means rolling varnish onto a small area and immediately smoothing it with a light brush stroke. Boating forums include positive experiences with the method, but also reports of roller bubbles and orange peel. These do not establish that the same roller or foam brush suits all Epifanes one- and two-component products.
If considering a roller, check the application method in the instructions for the exact product. Also check the tool's solvent resistance and make a test area. Do not copy a forum's thinning percentage into your own application recipe.
Varnishing bare wood step by step
- Identify the wood and structure. Is it moving solid wood, oily teak or dimensionally stable plywood? Choose the whole system before the first coat.
- Remove unsound old coating. Loose or cracked varnish will not become a good substrate beneath new varnish. Repair damaged wood before coating.
- Clean and sand. Remove oil, wax and other contamination according to the chosen system's preparation instructions. Sand along the grain and remove sanding dust.
- Apply the product-specific initial coats. Do not interchange the thinning schedules for Clear Varnish and Woodfinish Gloss.
- Build the finish. Follow drying and intermediate-sanding instructions. Record the application time on masking tape or in a job log.
- Allow the surface to cure before use. The recoating interval and readiness for service are different things.
Clear Varnish: thinning is part of the system
In the manufacturer's EN-001 data sheet system for bare wood, the initial coats are thinned by 50 %, 25 % and 15 %. These are followed by at least four finishing coats thinned by 0–5 %. Greater UV exposure may require additional full finishing coats. Initial coats and protective finishing coats serve different purposes; one general coat count cannot be applied to all varnishes.
The thinning percentage is the amount of thinner added relative to the varnish volume: for example, 50 % thinning means 50 ml thinner added to 100 ml varnish. It does not mean that half of the final mixture is thinner. Use Epifanes Brushthinner and check the current instructions for your packaging.
Woodfinish Gloss: use the recoating window thoughtfully
Woodfinish Gloss is an interesting option particularly for teak, iroko and oak. In the manufacturer's system, the next coat can be applied within a 24–72 hour window without intermediate sanding for adhesion. The window does not eliminate the need for drying: cold and thick films slow drying. After more than 72 hours, sand the surface. Light intermediate sanding can also improve smoothness even when adhesion does not require it at that point.
PP Varnish Extra: fast build, planned finishing coats
PP Varnish Extra is used as a fast-building sealer and filling varnish. An exterior system is finished with a suitable varnish according to the manufacturer's instructions; Clear Varnish, Woodfinish Gloss or Poly-urethane Clear Gloss may form part of such a combination. Finishing coats improve UV protection. PP should therefore not automatically be described as having no UV protection.
PP Varnish Extra and Poly-urethane Clear Gloss require their own thinners. PP 2K Brushthinner and Poly-urethane 2K Brushthinner are not the same product.
Five common varnishing mistakes and what to change
- Small bubbles in the wet film
- Do not immediately add thinner as the solution. Check the tool, application technique and film thickness. Make a new test area with the specified brush. Do not keep agitating a film that is already setting.
- Orange peel
- Check the temperatures of the product, wood and workspace, and the amount applied. Excessive film thickness and unsuitable conditions can impair flow. Let the defective finish dry, sand it level according to the product instructions and adjust the next coat's application.
- A run beneath an edge
- Reduce the varnish left on edges and check vertical surfaces in raking light during application. Do not try to level a dried run with another thick coat.
- The finish remains soft
- Check drying conditions and film thickness. With a two-component product, check the mixing ratio and pot life as well. A new coat will not correct incomplete curing underneath.
- New varnish lifts from the old finish
- Establish the old system, adhesion and cleanliness. Do not put a hard two-component polyurethane varnish over an unknown or ordinary one-component varnish assuming sanding alone will ensure compatibility.
Maintaining an existing varnish finish: not everything needs stripping
Sound but dull: wash, degrease and sand according to the compatible maintenance varnish's instructions. Fresh maintenance coats are often enough when the old film is still well adhered.
Local damage: assess how deep it goes. Repair loose areas and feather the edges before maintaining the entire surface. A finishing varnish alone cannot repair rotten or damp wood.
Flaking and extensive cracking: remove unsound varnish and rebuild the system. Pay particular attention to horizontal surfaces, end grain and handrail edges, which often face the greatest exposure. Maintenance before flaking saves the most work.
Rapidclear, Rapidcoat or a satin finish?
Rapidclear gives a clear semi-gloss finish. Rapidcoat is teak-tinted to even out the wood colour; try the colour on scrap wood first. For a deep high gloss, the manufacturer's system allows the Rapid finish to be prepared and overcoated with Clear Varnish or Woodfinish Gloss.
For an exterior satin finish, one option is Woodfinish Matte over a sufficient gloss base system. Do not confuse it with Rubbed Effect interior varnish: a similar gloss level does not mean the same application.
What you need – choose one complete system
- Clear Varnish / High Gloss and Brushthinner for traditional clear varnishing.
- Woodfinish Gloss and its specified thinner for oily wood species.
- PP Varnish Extra, its own thinner and the chosen system's finishing varnish for fast build.
- Poly-urethane Clear Gloss and its own thinner for a two-component system on a dimensionally stable structure.
- A soft varnish brush, sanding supplies and protective equipment.
These are alternative systems, not a single combined shopping list. Choose the pack size on the product page. Also follow the packaging's protection and ventilation instructions, particularly when handling two-component products.
Read next
- Choosing a boat varnish
- Varnishing a wooden boat step by step
- Epifanes High Gloss brushing instructions
- Epifanes range and product-specific instructions
- Guides and application instructions
Sources
Technical content checked on 13 November 2026. The manufacturer's online data sheets may have publication dates earlier than this check. Your packaging and the current data sheet for the product you are using determine the job-specific values.
- Epifanes Clear Varnish, EN-001 data sheet
- Epifanes Woodfinish Gloss, EN-002 data sheet
- Epifanes: coating systems for wood
- Epifanes PP Varnish Extra
Practical experiences, separately: YBW: rollers and bubbles, brushes and light tipping off and orange peel in PP varnish. Experiences help identify problems, but do not determine thinning, drying times or product compatibility.
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