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Single component, water-based fire protective coating system for use on most interior soft and hardwoods, including plywood, chipboard, fibre insulation board, hardboard and veneering. Can be overcoated with Pyroplast Top WB to colour.
- Formerly known as Sika Pyroplast Wood P
- For Professional Use Only
- Independently fire tested and approved to European classification: EN 13501-1 (ref: K-3067/776/14-2)
- Simple to apply, halogen-free. Pyroplast Wood P reduces the ignitability of soft and hardwood ≥ 10 mm thickness, as well as other timber derivatives e.g. plywood, chipboard, fibre insulation board, hardboard, and also on veneering ≥ 13 mm thickness.
- Delays the inflammation of natural wood and wood derivates
Sherwin-Williams Pyroplast Wood P is an ecological water-based fire protection coating for interior use which forms a carbon char under the effect of heat.
The product is tested to provide spread-of-flame protection and delays the inflammation of natural wood and wood derivates. Pyroplast Wood P emphasizes the interior design of timber structures and provides an attractive option to architects, builders and end-users.
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- Features & Benefits
- Product Information
- System Information
- Application Information
- Ecology, Health & Safety
- Application Instructions
Features & Benefits
- Ecological water-based coating system
- VOC Pyroplast Wood P: < 1 g/l
- VOC Pyroplast Top WB: < 48 g/l
- Free of halogens and aromatic solvents
- Low material consumption
- Simple application
- No additional statical load of coating
- Individual coloration possible with a topcoat of Pyroplast Top WB
- Insulates against heat, checks fire, prevents propagation of fire and spread of flame and diminishes fluegas temperatures.
Product Information
Packaging |
Pyroplast Wood P Primer: 5 kg net. Pyroplast Wood P: 25 kg and 5 kg net. Pyroplast Top WB: 11 kg and 3L net. |
Appearance & colour | White |
Shelf life | 18 months |
Storage conditions | Store in originally sealed containers in a cool and dry environment. Protect against frost! |
Density |
Pyroplast Wood P Primer: ~1.29 g/cm³ Pyroplast Wood P: ~1.29 g/cm³ Pyroplast Top WB: ~1.26 g/cm³ |
Flash point | N/A |
Solid content |
Pyroplast Wood P Primer: ~52 % by weight Pyroplast Wood P: ~65 % by weight Pyroplast Top WB: ~52 % by weight |
System Information
- Tie coat (depending on wood surface): Pyroplast Wood P Primer
- Intumescent coating: Pyroplast Wood P
- Topcoat (optional): Pyroplast Top WB
Application Information
Consumption |
1 × 120 g/m² Pyroplast Wood P Primer (depending on wood surface) 1 × ≥ 350 g/m² Pyroplast Wood P 1 x 120 g/m² Sika Pyroplast Top WB (optional) Consumption rates are based on fire performance according EN 13501-1 B EN 13823 FIGRA ≤ 120 W/s und LFS < edge of specimen and s1 SMOGRA ≤ 30 m2 / s2 and TSP600s ≤ 50 m2 d0 No flaming droplets/ particles in EN 13823 within 600 s (As entire coating system. If no Topcoat is applied, classification Bs2d0 is met!) If consumption rates for alternative standards are requested, please consult the Technical Department at 0113 2455450. |
Relative air humidity |
Max. 80 %, application temperature shall be at least ≥ 3 K above dew point. During application and drying of the total Pyroplast Wood coating system including Pyroplast Top WB, as well as transportation, special protection measures must be taken against weathering. |
Substrate temperature |
Object temperature not below + 10°C, to max. + 40°C* * If higher temperatures occur, please consult the Technical department for further assistance. |
Substrate moisture content | At high moisture content of the timber (> 15%), the coating is unlikely to dry satisfactorily and blooming may result. Therefore the moisture content of the timber should be, as near as possible to the level it will stabilise at in use. |
Waiting time to overcoating |
Pyroplast Wood P requires a minimum of 24 h drying prior to application with itself. Overcoatable with topcoat Pyroplast Top WB after approx. 48 hours. A complete drying of the fire protection coating prior topcoat application is highly recommended. Through-drying of Pyroplast Wood P can be checked by a ‘finger-nail test’. Prior to further applications possible contaminations must be removed. |
Drying time |
At approx. + 20°C temperature and 60 % relative humidity: Touch dry after ~6 h Overcoating after ~24 h with itself Overcoating after ~48 h with Pyroplast Top WB Different temperatures, different relative humidity and different fire protection coating thickness have an influence on drying time |
Ecology, Health & Safety
User must read the most recent corresponding Safety Data Sheets (SDS) before using any products. The SDS provides information and advice on the safe handling, storage and disposal of chemical products and contains physical, ecological, toxicological and other safety-related data.
Application Instructions
Pre-Treatment:
Substrate must be dry, free from dust, oil, wax, grease, dirt, resin, etc.; Existing coatings with poor adhesion have to be completely removed, e.g. with solvent-based paint stripper or to be sanded down. Surfaces that have been treated with non-acid resistant coatings or release agents such as emulsion paints containing lime, chalk or lithopone should be sanded down completely.
Timber substrates with wetting difficulties should be roughened thoroughly with abrasive paper. The moisture content of the timber should be below 15 %.
If resistance to wet rot, fungi or insect attack is requested, the manufacturer recommends using commercial preservative agents based on oil-alkyd resins provided they are compatible with the Pyroplast fire protection system.
Apply Pyroplast fire protection coating system only after the preservative treatment is completely dry. The moisture content of the timber should be below 15 %. Sika Pyroplast Wood P Primer may be used to allow sufficient adhesion or avoid diffusion of wood ingredients on resinous wood.
Mixing:
Stir thoroughly prior to application, ensuring the product is free of lumps.
Application:
The method of application has a major effect on achieving uniform thickness and appearance. Spray application will give the best results. The indicated dry film thickness is easily achieved by airless spray. In case of application by roller or brush, additional layers may become necessary to achieve the required coating thickness, depending on type of construction, site conditions, colour shade etc. Prior to application a trial on site may be useful to ensure that the selected ap- plication method will provide the requested results.
Brushing & Rolling:
- Material shall be applied in supply viscosity
- Load natural fine bristle brushes or short pile lambswool rollers are recommended
- Application of two coats of Pyroplast Wood P to a load of 175g/m² each coat is recommended
Airless Spraying:
- Material shall be applied undiluted
- Airless spray equipment with pressure ratio ≥ 30 : 1
- Filters should be removed
- Hose diameter not below ⅜ "
- Whip line 1.5 - 2 m, NW 6, may be used
- Recommended nozzle sizes:
- Pyroplast Wood P Primer: 0.27 - 0.34 mm (0.011 - 0.017 inch)
- Pyroplast Wood P: 0.34 - 0.64 mm (0.017 - 0.025 inch)
- Pyroplast Top WB: 0.27 - 0.56 mm (0.011 - 0.023 inch)
- Hoses must be used for water-based products only
Above data shall be used as a guideline with variations being made to suit local conditions. Immediately clean equipment after use with water.
IMPORTANT FIRE PRODUCTS NOTICE: The information displayed on this website should be used as a guide ONLY and our Technical Department should be contacted to obtain a tailored specification and any advice necessary before you place an order for fire protection products. Fire protection products are non-returnable except in accordance with Condition 8 of the Terms and Conditions and should be applied only by an individual with the necessary expertise and experience. We will not be held liable for any resulting damage to property, human life or monetary costs incurred due to the incorrect specification you have prepared or use of fire protection products caused by your negligence, including your failure to have contacted us to obtain the relevant advice/specification.
Data sheet
- Manufacturer
- Sherwin-Williams
- For Use By
- Professional Use
- Interior / Exterior Use
- Interior Use
- For Use On
- Wood
Plywood
Chipboard
Hardwood
Fibre Insulation Board
Veneer - Application Method
- Brush
Roller
Airless Spray - Single, Two or Three Pack
- Single
- Touch Dry (at 20°C)
- ~6 hours
- Dry to Recoat (at 20°C)
- ~24 hours
- Max. Application Temperature
- +40°C
- Min. Application Temperature
- +10°C
- Density
- ~1.29 g/cm³
- Dry for Topcoat (at +20°C)
- ~48 hours
- Consumption
- ≥ 350 g/m²
- Base Type
- Water-Based
- Suitable For Use On
- Fibre Insulation Board
- Suitable For Use On
- Wood
- Suitable For Use On
- Hardwood
- Suitable For Use On
- Veneer
- Suitable For Use On
- Plywood
- Suitable For Use On
- Chipboard
- Finish
- Matt
- Application Method
- Brush
- Application Method
- Airless Spray
- Application Method
- Roller
- Manufacturer
- Sherwin-Williams
- Components
- 1K
- Usages
- Fire Resistance
- Product Usage Type
- Midcoat
- Product Range
- Pyroplast
- Colour Family
- White
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IMPORTANT SHIPPING & DELIVERY INFORMATION
Sherwin-Williams Pyroplast Wood P is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.
Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.
Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.
All delivery costs below are excluding VAT
Sherwin-Williams Pyroplast Top WB
A single component water-based topcoat in 345+ colours for fire protection coatings on wood, specially designed for Pyroplast intumescent fire protection systems against humidity and mechanical strain. Pyroplast Top WB has no impact on the foaming reaction of intumescent coatings. Formerly known as Sika Pyroplast Top W May only be used by...
Sherwin-Williams Pyroplast Wood P Primer
Pre-treatment agent for use in conjunction with Pyroplast Wood P, a water-based fire protective coating system for use on interior wooden surfaces. Simple to apply, halogen-free. Pyroplast Wood P Primer insulates against heat, checks fire, prevents propagation of fire and spread of flame and diminishes fluegas temperatures, and can be...