Sika Pyroplast Clear Intumescent Varnish – Wood T
Sika Pyroplast Wood T is a transparent intumescent water borne, transparent fire protection coating which forms a carbon char under the effect of heat.
Pyroplast Wood T requires the Pyroplast Clear Top Coat to be used over the top to protect it.
Coverage = 3.34m2 per 1kg (This allows for around 2 coats)
Sika Pyroplast’s clear intumescent provides spread-of-flame protection and delays the combustion of internal natural wood derivates.
This intumescent varnish emphasizes the interior design of timber structures and therefore is an attractive option to architects, builders and end-users.
Please note, this product may appear to be white in the tin, however it dries clear when applied under the correct conditions.
Reduction of ignitability of soft and hardwood ≥ 10 mm thickness and other timber derivatives, such as plywood, chipboard, fibre insulation board, hardboard and also on veneers ≥ 12 mm thickness. Pyroplast insulates against heat, checks fire, prevents propagation of fire and spread of flame and diminishes flue-gas temperatures.
Do not use Sika Pyroplast Clear Intumescent in areas of high humidity, heat sources or on surfaces where significant physical impact is likely such as floors, stairs etc.
The Sika Pyroplast Clear Intumescent Varnish has the following properties:
- Water based coating system
- VOC: approx. 40 g/l
- Free of aromatic solvents
- Low material consumption
- Simple application
- No additional statical load of coating
Approval / Standards:
Sika Pyroplast Wood T is thoroughly tested to ensure that the coating performs in all conditions and has been successfully tested and classified to many standards worldwide including EN 13501-1 and BS 476 part 6/7.
Sika Pyroplast Wood T: transparent
Sika Pyroplast Wood Top T: transparent (matt)
Imdg-Code-No Not applicable
SHELF LIFE 18 months, in cool and dry storage conditions and original unopened containers.
Expiry date is noted on the label of each tin.
Protect against frost!
Tie coat (if necessary), Sika Pyroplast Wood T Primer
Intumescent coating, Sika Pyroplast Wood T
Finish Sealer, Sika Pyroplast Wood Top T
Substrate must be dry and clean, free from dust, oil, wax, grease, dirt, resin, etc; Existing coatings with poor adhesion have to be completely removed. We recommend using a solvent-based paint stripper or a sanding belt. Completely rub down surfaces that have been treated with non-acid resistant coatings or release agents such as emulsion paints containing lime, chalk or lithopone. Thoroughly roughen timber substrates with wetting difficulties using abrasive paper.
The moisture content of the timber should be below 15%.
Pre-Treatment with Wood Preservatives:
If resistance to wet rot, fungi or insect attack is requested, we recommend using commercial preservative agents based on oil alkyd resins provided they are compatible with the Sika Pyroplast fire protection system. Apply Sika Pyroplast fire protection coating system only after the preservative treatment is completely dry.
Sika Pyroplast Wood T transparent: approx. 1.33 g/cm3 at +20° C
Sika Pyroplast Wood Top T: approx. 0.98 g/cm3 at +20° C
Solids By Weight:
Sika Pyroplast Wood T: approx. 63% (according to EN ISO 3251)
Sika Pyroplast Wood Top T: approx. 50% (according to EN ISO 3251)
Sika Pyroplast Wood T: not applicable
Sika Pyroplast Wood Top T: approx. +61°C
- 1 x60g/m2 Sika Pyroplast Wood T Primer (if necessary)
- 1 x300g/m2 Sika Pyroplast Wood T (Wood class D > 12 mm) or
- 1 x350g/m2 Sika Pyroplast Wood T (Wood class D > 10 – 12 mm) plus
- 1 x50g/m2 Sika Pyroplast Wood Top T
Consumption rates are based on fire performance according EN 13501-1
B EN 13823 FIGRA ≤ 120 W/s and LFS < edge of specimen and THR600s ≤ 7,5 MJ
EN ISO 11925-2 Exposure = 30s Fs < 150mm within 60 s
s1 SMOGRA ≤ 30 m2 / s2 und TSP 600s ≤ 50 m2
d0 No flaming droplets/particles in EN 13823 with 600 sj; If consumption rates for alternative standards are requested, please consult the Technical Department of Sika Deutschland GmbH.
APPLICATION – how do you apply Sika Pyroplast Clear Intumescent?
Preparation of Material:
Stir the intumescent varnish thoroughly, free of lumps.
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 spraying. When applying the products by roller or brush, additional layers may be needed to achieve the required coating thickness. This depends on the type of construction, site conditions, colour shade etc. Prior to application, a trial on site may be useful to ensure that the selected application method will provide the requested results.
- Material shall be applied undiluted
- Airless spray equipment with pressure ratio ≥ 30:1
- Filters should be removed
- Hose diameter not below 3/8 “
- Whipline ¼ ” may be used
- Recommended nozzle size for Sika Pyroplast Wood T:
- 0.028 – 038 mm or 0.011 – 0.015 inch
- Recommended nozzle size for Sika Pyroplast Wood Top T:
- 0.028 – 0.38 mm or 0.011 – 0.015 inch
- Solvent resistant hoses must be used
Apply two coats of Sika Pyroplast Clear Intumescent to load of 175 g/m2 each coat, in order to obtain a very smooth finish by cutting down wooden fibres. Light sanding after the first coat may be recommended (i.e. with 150 grade paper).
Above data shall be used as a guideline with variations being made to suit local conditions.
Brushing and 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 Sika Pyroplat Wood T to a load of 175 g/m2 each coat is recommended
Sika Pyroplast Wood T Primer, Sika Pyroplast Wood T and
Sika Pyroplast Wood Top T:
Object temperature shall be at least ≥ 3 K above dew point
In case relative humidity exceeds 80% special measures must be taken to prevent the condensation forming while application.
At high moisture content of the timber (>15%), the coating is unlikely to dry satisfactory.
Not suitable for use on all woods. Please contact us for more details.
IMPORTANT INFORMATION ON PURCHASING OF PASSIVE FIRE PROTECTION PRODUCTS NOTICE:
The information displayed about the products on this website is to be used for guidance ONLY. We advise that all customers contact our technical department to obtain a free no obligation specification and quotation before purchasing goods directly from the website.
Products purchased directly from our website without specification will NOT qualify for certification.
Please be aware that any negligence caused by failure to obtain the relevant advice, or availment of our specification and estimation service, will absolve International Passive Fire Ltd from any liability should Passive Fire Protection Products prepared, or used, by the purchaser, or any other parties, result in damage to property or human life, or for any monetary costs incurred due to incorrect usage.
Next day delivery available
peace of mind
14 day returns policy
Call for the best prices
Speak to our experts