Sika® Pyroplast® Wood T with topcoat Sika® Pyroplast® Wood Top T New

• Complies with German AgBB, French VOC (A+) and Scandinavian M1 as coating system

Independently fire tested and approved to major European and national standards including:

• EN 13501-1 (ref: K-3067/776/14-1)
• BS 476- 6 (ref: 264398), part 7 (ref: 264397)
• DIN 4102-1 (ref: Z-56.313-91)
• ASTM E84-08a (ref: 01.15209.01.077b)

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® Wood Top T New as well as transportation special protection measures must be taken against weathering.

For Sika® Pyroplast® Wood T Primer, Sika® Pyroplast® Wood T with topcoat Sika® Pyroplast® Wood Top T New and Sika® Pyroplast® Wood Top T New.

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 T Primer, Sika® Pyroplast® Wood T and Sika® Pyroplast® Wood Top T New.

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 stabilize at in use.

For Sika® Pyroplast® Wood T Primer, Sika® Pyroplast® Wood T and Sika® Pyroplast® Wood Top T New.

Overcoatable with topcoat Sika® Pyroplast® Wood Top T New after approx. 48 hours.

Prior to further applications possible contaminations must be removed.

Drying/Curing

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

Sika® Pyroplast® Wood T Primer:

Sika® Pyroplast® Wood T with topcoat Sika® Pyroplast® Wood Top T New and Sika® Pyroplast® Wood Top T New:

Different temperatures, different relative humidity and different fire protection coating thickness have an influence on drying time.
Do not stack timber components treated with Sika® Pyroplast® fire protection coatings.

1 x 60 g/m² Sika® Pyroplast® Wood T Primer (depending on wood surface)

1 x 300 g/m² Sika® Pyroplast® Wood T (Woodclass D > 13 mm)
or
1 x 350 g/m² Sika® Pyroplast® Wood T (Woodclass D > 10 - 12 mm)
plus
1 x 50-60 g/m² Sika® Pyroplast® Wood Top T New (mandatory)

Consumption rates are based on fire performance according EN 13501-1
B         EN 13823 FIGRA ≤ 120 W/s and 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 und TSP_600s ≤ 50 m²
d0       No flaming doplets/particles in EN 13823 within 600 s

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, i.e. 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 rubbed 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 T Primer may be used to allow sufficient adhesion or avoid diffusion of wood ingridients 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

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 ¼ " may be used
• Recommended nozzle sizes:
  Sika® Pyroplast® Wood T: 0.28 - 0.38 mm
  (0.011 - 0.015 inch)
  Sika® Pyroplast® Wood Top T New: 0.28 - 0.38 mm
  (0.011 - 0.015 inch)
• Solvent resistant hoses must be used for Sika® Pyroplast® Wood  Top T New!

Apply two coats of Sika® Pyroplast® Wood T to a 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 recommend (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 undiluted
• Load natural fine bristle brushes or short pile lambswool rollers are recommended
• Application of two coats of Sika® Pyroplast® Wood T to a load of 175 g/m² each coat is recommended

Sika® Pyroplast® Wood T Primer and Sika® Pyroplast® Wood T:
Immediately after use with warm water.

Sika® Pyroplast® Wood Top T New:
Immediately after use with Sika® Unitherm® Thinner.