Sika® Pyroplast® Wood P

Independently fire tested and approved to European classification:

• EN 13501-1 (ref: K-3067/776/14-2)

18 months

In originally sealed containers in a cool and dry environment.

Protect against frost!

Max. 80 %, application temperature shall be at least ≥ 3 K above dew point.

During application and drying of total Sika® Pyroplast® Wood coating system including Sika® Pyroplast® Top W as well as transportation special protection measures must be taken against weathering.

For Sika® Pyroplast® Wood P Primer, Sika® Pyroplast® Wood P and Sika® Pyroplast® Top W.

Object temperature not below + 10°C, to max. + 40°C*

* If higher temperatures occur, please consult the Technical department for further assistance.

For Sika® Pyroplast® Wood P Primer, Sika® Pyroplast® Wood P and Sika® Pyroplast® Top W.

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.

For Sika® Pyroplast® Wood P Primer, Sika® Pyroplast® Wood P and Sika® Pyroplast® Top W.

Sika® Pyroplast® Wood P requires a minimum of 24 h drying prior to application with itself.

Overcoatable with topcoat Sika® Pyroplast® Top W after approx. 48 hours.

A complete drying of the fire protection coating prior topcoat application is highly recommended.

Through-drying of Sika® Pyroplast® Wood P can be checked by ‘fingernail-test’.

Prior to further applications possible contaminations must be removed.

Drying/Curing

At approx. + 20°C temperature and 60 % relative humidity.
 

Sika® Pyroplast® Wood P Primer:

Sika® Pyroplast® Wood P:

Sika® Pyroplast® Top W:

Different temperatures, different relative humidity and different fire protection coating thickness have an influence on drying time.

1 × 120 g/m² Sika® Pyroplast® Wood P Primer (depending on wood surface)

1 × ≥ 350 g/m² Sika® Pyroplast® Wood P

plus

1 x 120 g/m² Sika® Pyroplast® Top W (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
            THR_600s ≤ 7,5 MJ

            and

            EN ISO 11925-2 Exposure = 30 s Fs < 150 mm within 60 s
s1        SMOGRA ≤ 30 m² / s2 and TSP_600s ≤ 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 of Sika Deutschland GmbH.

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 sand 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 sand down completely. Timber substrates with wetting difficulties should be roughened thoroughly with 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. 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.

Stir 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 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 application method will provide the requested results.

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® Pyroplast® Wood P to a load of 175 g/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 "
• Whipline 1.5 - 2 m, NW 6, may be used
• Recommended nozzle sizes:
  Sika® Pyroplast® Wood P Primer: 0.27 - 0.34 mm
  (0.011 - 0.017 inch)
  Sika® Pyroplast® Wood P: 0.34 - 0.64 mm
  (0.017 - 0.025 inch)
  Sika® Pyroplast® Top W: 0.27 - 0.56 mm
  (0.011 - 0.023)

• 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 after use with water.