B-s1,d0 fire protection for wood
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Transparent fire-retardant wood impregnation
SPFR100 is designed for a wide range of timber and wood-based materials. Its published EuroClass B-s1,d0 reaction-to-fire classification under EN 13501-1 applies to the certified spruce configuration; other configurations require project-specific verification.
Tintable in all shades according to any color chart.
Exterior formulation designed for weather-exposed timber.
Reaction-to-fire class B-s1,d0 (EN 13501-1), certified for the spruce configuration
Water-based, pH-neutral, corrosion-free and formaldehyde-free
Certified B-s1,d0 reaction-to-fire performance at a total application of 240 g/m² (approximately 210 ml/m²).
Suitable for industrial fire protection treatment in an autoclave.
The right shade for every project
Tinted fire protection enhances the natural beauty of wood while providing effective fire safety. As the color is part of the fire retardant, no additional varnishes or topcoats are required.
SPFR100 gives you the freedom to perfectly match fire-protected wood with any architectural color palette. We can tint almost any shade based on widely used color charts according to your project.
Upon request, we will help select the most suitable color solution for your project.
Request a project-specific colour
Why settle for ordinary paint or stain when you can cost-effectively use tinted SPFR100 fire protection treatment?
Certified total application - 240 g/m² (approximately 210 ml/m²)
SPFR100 achieves its certified B-s1,d0 classification at this total application rate within the certified spruce configuration.
Problems with unprotected wood:
SPFR100 protects wood by significantly slowing ignition and preventing fire spread. This gives people more time to evacuate and emergency services more time to respond.
Product information
Suitable for use on
- Wooden facades and cladding boards
- Structural timber (battens, frames, rafters, etc.)
- Cross-laminated timber (CLT)
- Glued laminated timber structures (e.g., beams, columns)
- Plywood and multi-layer panels
- Cellulose-based decorative panels
- Log walls
Packaging
- 5, 10, and 25 liter canisters
- 300-1000 liter IBC containers
Application methods
- Brush
- Spray
- Dipping
- Industrial application (e.g., flow coating, vacuum impregnation)
SPFR100 is available in a formulation designed for exterior timber exposed to changing weather conditions. Exterior performance depends on the substrate, application quality, construction detailing, exposure, inspection and maintenance. Follow the current Technical Data Sheet and maintenance guide for each project.
Frequently Asked Questions
Find answers to your wood protection questions.
Wood fire-retardant impregnation is the treatment of wood with a special fire-protection agent that penetrates into the wood, reduces its ignitability, and slows down the spread of fire. Its purpose is to improve the fire performance of wood and help achieve the required fire classification.
SPFR100 developed by Solid Protect is one such solution.
SPFR100 is a transparent, water-based fire-retardant impregnation for absorbent wood, intended for interior and exterior applications. Its published EN 13501-1 B-s1,d0 classification applies to the certified spruce configuration stated in classification report K16/2024 and certificate ET-0388-24. Other substrates and configurations require project-specific verification. SPFR100 has a viscosity of 12.75 mPa·s.
SPFR100 is a transparent wood impregnation treatment that preserves the natural appearance of wood and does not form a whitish layer or a heavy surface coating. It is well-suited for projects where maintaining the natural aesthetic of wood is important.
The main difference between intumescent paint and a wood impregnation treatment lies in how they protect the wood and what kind of finish they leave behind.
Intumescent paint forms a covering layer on the surface of the wood. It usually changes the appearance of the surface, covers the wood grain, and is generally more suitable when a painted finish is desired. In many cases, it is a multi-layer system that includes a primer and a topcoat.
A wood fire-retardant impregnation treatment, by contrast, penetrates into the wood and usually does not form a heavy surface coating. Its advantage is that the natural appearance of the wood is preserved better and the surface remains more natural-looking. SPFR100 is a transparent wood impregnation treatment designed for the fire protection of wood and wood-based materials.
SPFR100 is used for the fire protection of wood and wood-based materials. It is particularly well suited to softwood species such as spruce, pine, and larch, and is used on facades, cladding boards, structural timber, plywood, CLT, and log houses in both industrial applications and construction projects.
Yes. SPFR100 can be tinted according to colour charts, allowing you to choose a shade that suits the project while maintaining the desired visual appearance.
In tinted solutions, we use high-quality iron oxide- and titanium dioxide-based pigments that help ensure good color stability in outdoor conditions.
SPFR100 has a formulation designed for exterior use on absorbent timber. Project suitability should be confirmed against the exposure conditions and current technical documents, and treated surfaces must be inspected and maintained according to the maintenance guide. SPFR100 does not currently claim an EN 16755 EXT durability classification.
Interior surfaces and structural timber treated with SPFR100 generally do not require separate renewal of the fire protection. Exterior surfaces should be inspected and, where necessary, renewed every 5-10 years, especially in areas exposed to weather. The typical maintenance coat consumption is approximately 120-140 ml/m².
The typical drying time of SPFR100 is 24-48 hours at around +20 °C and average relative humidity. Drying time is mainly affected by temperature, wood type, moisture, and ventilation.
Yes. SPFR100 is a solvent-free, formaldehyde-free, halogen-free, VOC-free, pH-neutral, and non-corrosive solution that meets M1 indoor air quality requirements and is well-suited for projects where health and environmental safety are important.
View M1 Certificate →
EN 13501-1 is the European standard used to classify the reaction to fire of construction materials. B-s1,d0 means:
B - the material is very limited in its contribution to fire
s1 - very little smoke is produced
d0 - no flaming droplets or particles are produced
The required reaction-to-fire classification and its applicability must always be verified against the project fire strategy and the product's certified configuration.
SPFR100 works on wood and wood-based materials, and is particularly well suited to common softwoods such as spruce (Picea abies), pine (Pinus sylvestris) and larch (Larix decidua), as well as plywood, CLT and log timber. Each species has different density, hardness and natural durability, which affect how it is used in facades, cladding and structures.
For a detailed reference table of wood species and engineered wood products — including density, hardness, strength and durability — see our Wood Species Guide →
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