Sherwin-Williams Firetex Concrete WB, also known as Sika Unitherm Concrete W, is a water-based fire protection coating system for concrete, masonry and brickwork located in interior situations, e.g. not exposed to weathering.

Sherwin-Williams Firetex Concrete WB forms an insulating carbon char foam under the effect of heat or fire and protects the concrete substrate against heat and fire.

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• Features & Benefits
• Product Information
• System Information
• Application Information
• Ecology, Health & Safety
• Application Instructions

Features & Benefits

• Protection of concrete, masonry and brickwork against fire or heat
• Delays heat transfer through walls in case of fire
• Ecological and efficient water-based coating, lowest material consumption
• Free of halogens and aromatic solvents, VOC < 1 g/l
• Meets CO² D (Class C1) > 50m without any additional coating
• Direct application on concrete. No need of primer or scrim
• Simple and easy application
• Third party approved repair mortars
• Individual coloration possible by use of topcoat

Product Information

System Information

Damaged concrete surfaces:

Suitable repair mortar

Primer:

N/A

Fire protection coating for concrete:

Sherwin-Williams Firetex Concrete WB

Topcoat (optional):

Sherwin-Williams Firetex Top WB, available in all RAL colour shades

Sherwin-Williams Firetex Top SB available in RAL colour shades

Application Information

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

Substrate Preparation:

Surfaces to be coated must be brushed off and vacuum cleaned afterwards. They have to be solid to support any loads, free of sludge, dirt, oil, grease, wax, water-repellent agents and other contamination. Residual humidity in the concrete must be below 4 % according to CM-humidity measuring instrument.

In case of existing coatings, a compatibility test with the fire protection system is mandatory.

Any damage or imperfection (impact, corrosion, etc.) should be repaired prior the coating with the adequate repair mortar.

Mixing:

Stir thoroughly with slowly turning mechanical stirrer, 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 the selected application method will provide the requested results.

Airless spraying:

• Material shall be applied undiluted
• Airless spray equipment with transmission ratio > 45 : 1
• Screens and filters must be removed
• Hose diameter not below ⅜ “
• Whip 1.5 - 2 m, diameter 6 may be used
• Nozzle size 0.46 - 0.61 mm (0.019 - 0.024 inch)
• Hoses must be used for water-based products only

Brushing / rolling:

• Material shall be applied undiluted
• Load natural fine bristle brushes or short pile lambswool rollers are recommended

  Clean equipment immediately 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.