Unlimited effects over time
Topcoat for intumescent varnish for wood – Vi Bois
Non-degrading transparent finish for intumescent varnish.
Available in a 20L format. Made in France. Ready to use. PV included.
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In stock
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Delivery from €4.99 excluding VAT
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M1 fireproofing certificate provided
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Made in France
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Commandez avant minuit pour etre livre Monday 15 June
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Delivery within 24 business hours
Product manufactured in France
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What is the precise role of the finishing varnish and its technical composition?
This finish is designed to protect the Vi Bois primer against mechanical wear, scratches and everyday stresses while maintaining a neat appearance of the substrate.
The finishing varnish acts as an additional protective layer over the intumescent primer. Its role is not to replace the active layer, but to preserve it when the treated wood is to remain exposed over time.
This is a transparent, water-based, non-intumescent lacquer. Its solvent-free formulation is suitable for interior projects where air quality and ease of application are important factors in the choice of system.
| characteristic | Description |
|---|---|
| Product type | Clear lacquer |
| Function | Protection of the intumescent primary |
| Aqueous | Phase |
| Fire behavior | Non-intumescent |
| Solvent- | free |
| Packaging | 20L container |
- Protects the intumescent layer from mechanical damage
- Maintains a transparent finish on wood
- Suitable for exposed indoor use
- Integrates into the Vi Bois system as a finishing layer
Is the finishing varnish mandatory to obtain the M1 classification, i.e. B-s1,d0?
Key points
Fire rating is ensured by the Vi Bois primer correctly applied at 200 g/m².
Recommended use
Finishing is recommended when the surface needs to be more resistant to wear or moisture.
No, applying this finishing varnish is not essential to validate the B-s1,d0 fire rating. The performance is achieved thanks to the Vi Bois primer when applied according to the specified weight.
However, this finish becomes relevant when the treated wood is intended to remain visible and withstand greater wear and tear. It does not add fire resistance, but it helps to preserve the layer on which it is applied.
- Classification ensured by the Vi Bois primary school
- Finishing touches not required for initial validation
- A useful finish to protect the active layer
- Recommended finish for areas exposed to scratches and moisture
To find out all the specifics of the system, you can consult the page dedicated to intumescent varnishes.
How is this finishing varnish applied and what is its coverage for a 20L container?
The finishing varnish should only be applied after the Vi Bois primer has completely dried. The primer must first reach a workable state, which takes approximately 3 to 4 hours depending on ambient conditions.
| Checkpoint | Information |
|---|---|
| Packaging | 20 liters |
| Indicative yield | Approximately 240 m² |
| Appearance | Satin, transparent |
| Recommended application | Paint gun |
| Pre-treatment | Primer for dry wood |
A 20L container can cover large areas, making it a suitable solution for projects where the primer protection needs to be homogeneous on several wooden elements.
- Wait until the primer is dry enough to handle.
- Apply evenly over the entire surface
- Use a spray gun for a uniform finish.
- Preserve the natural appearance of the wooden support
If your project also involves other wood fireproofing treatment systems,
you can consult the dedicated range.
In what cases is this finish particularly recommended?
This finish is recommended when wood treated with intumescent primer remains exposed to contact, friction or more demanding usage conditions.
Furniture
Tables, counters, work surfaces exposed to frequent contact.
Passage areas
Surfaces that are likely to be scratched or rubbed regularly.
Damp interiors
Environments where active layer protection is useful.
In these configurations, the finish acts as additional protection and improves the overall durability of the system over time.
What precautions are specific to this water-based finishing lacquer?
Even though the product is solvent-free, the usual precautions should be observed during application.
- Wear gloves and protective eyewear
- Apply in a well-ventilated area
- Do not dispose of the product in the environment
- Plan for disposal at an approved center
- Clean the tools with water after use
These precautions help to secure the application while maintaining simple implementation on site or in workshop.
How should the finishing varnish be stored?
The finishing varnish must be stored with the same general precautions as the Vi Bois primer in order to maintain its characteristics before application.
| Storage conditions | Recommendation |
|---|---|
| Duration | 1 year |
| Packaging | Original packaging |
| Temperature | Protect from frost and extreme heat |
| Light | Store away from light |
Why can this finish play a role in the validity of the M1 over time?
The M1 validity of the system depends primarily on the quality of application of the intumescent primer. However, when the active layer is subjected to wear, its surface protection becomes a point of concern.
The finishing varnish protects this layer from everyday external damage. In this way, it helps to preserve the system’s integrity over time, especially when the treated wood is subjected to regular use.
- Protection of the intumescent layer against scratches
- Reduction of the risk of mechanical damage
- Better performance in more humid environments
- A useful addition for the overall sustainability of the system
The finish alone does not guarantee fire classification, but it helps to maintain the conditions of a well-protected system over time.
To learn more, you can also consult our wood treatment service as well as our range of wood fireproofing solutions.
