Sikafloor®-2540 W

• Conforms with LEED v4 MR credit: Building product disclosure and optimization — Environmental Product Declarations (option 1)

• Conforms with LEED v4 MR credit: Building product disclosure and optimization — Material ingredients (option 2)

• Conforms with LEED v4 EQ credit: Low-emitting materials

• Environmental Product Declaration (EPD) in accordance with EN 15804. EPD independently verified by Institut für Bauen und Umwelt e.V. (IBU)

• VOC emission classification GEV Emicode EC1^plus

• French regulation on indoor VOC emissions class A+

• CE marking and declaration of performance based on EN 1504-2:2004 Products and systems for the protection and repair of concrete structures — Surface protection systems for concrete — Coating

• CE marking and declaration of performance based on EN 13813:2002 Screed material and floor screeds — Screed material — Properties and requirements — Synthetic resin screed material

• Particle Emission ISO 14644-1, Sikafloor®-2540 W, CSM Fraunhofer, Approval No SI 1212-624

• Particle Emission EU GMP Annex 1, Sikafloor®-2540 W, CSM Fraunhofer, Certificate No SI 1212-624

• Outgassing Emissions VOC VDI 2083-17, Sikafloor®-2540 W, CSM Fraunhofer, Certificate No SI 1212-624

• Biological Resistance ISO 846, Sikafloor®-2540 W, CSM Fraunhofer, Certificate No SI 1212-624

• Decontamination DIN 25415, Sikafloor®-2540 W, ILF, Certificate No 170119

Water based epoxy

12 months from date of production

The Product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +30 °C. Always refer to packaging.

Refer to the current Safety Data Sheet for information on safe handling and storage.

~55 %

~43 %

IMPORTANT

Exposure to moist or wet heat

This product, can resist short-term moist or wet heat of up to +80 °C, if the exposure is only temporary (less than 1 hour). However, during exposure to moist or wet heat, do not also subject the Product to chemical and/or mechanical strain, as it may cause damage.

Resistant to many chemicals. Contact Sika technical service for specific information

Part A : Part B = 72: 28 (by weight)

75 % maximum

Beware of condensation. The substrate and uncured applied product must be at least +3 °C above dew point to reduce the risk of condensation or blooming on the surface of the applied product. Low temperatures and high humidity conditions increase the probability of blooming.

When performing application work with Sikafloor® 2540 W, the substrate moisture content must not exceed 6 % pbw measured by:
Test method: Sika®-Tramex meter, CM - measurement or Oven-dry-method.
No rising moisture according to ASTM (Polyethylene-sheet). Osmosis caused by rising moisture is notcovered by the product warranty.

Before overcoating Sikafloor^®-2540 W allow: 

Note: Times are approximate and will be affected by changing ambient conditions, particularly temperature and relative humidity.

~0.2–0.3 kg/m² applied as a roller coating

Note: Consumption data is theoretical and does not allow for any additional material due to surface porosity, surface profile, variations in level, wastage or any other variations. Apply product to a test area to calculate the exact consumption for the specific substrate conditions and proposed application equipment.

Select the most appropriate equipment required for the project:

SUBSTRATE PREPARATION

• Abrasive blasting cleaning system

• Planing machine

MIXING

• Electric double paddle mixer ~700 W (300–400 rpm)

• Scraper

• Clean mixing containers

APPLICATION

• Mixed material carrier

• Short pile (12 mm) nylon rollers

Cementitious substrates (concrete / screed) must be structurally sound and of sufficient compressive strength (minimum 25 MPa) with a minimum tensile strength of 1.5 MPa.

Substrates must be clean, dry and free of all contaminants such as dirt, oil, grease, coatings, laitance, surface treatments and loose friable material.

Use industrial vacuuming equipment to remove all dust, loose and friable material from the application surface before applying the Product.

TREATMENT OF JOINTS AND CRACKS

Construction joints and existing static surface cracks in substrate require pre-treating before full layer application. Use Sikadur® or Sikafloor® resins.

MECHANICAL SUBSTRATE PREPARATION

IMPORTANT

Exposing blow holes and voids

When mechanically preparing the surface, make sure to fully expose blow holes and voids.

1. Remove weak cementitious substrates.
2. Prepare cementitious substrates mechanically using abrasive blast cleaning or planing / scarifying equipment to remove cement laitance.
3. Before applying thin layer resins, remove high spots by grinding.
4. Use industrial vacuuming equipment to remove all dust, loose and friable material from the application surface before applying the Product.
5. Use products from the Sikafloor®, Sikadur® and Sikagard® range of materials to level the surface or fill cracks, blow holes and voids.

Contact Sika® Technical Services for additional information on products for levelling and repairing defects.

SUBSTRATE PREPARATION OF NON-CEMENTITIOUS SUBSTRATES

For information on substrate preparation of non-cementitious substrates, contact Sika technical services.

1. Prior to mixing all parts, mix Part A (resin) using an electric double paddle mixer. Mix liquid and all the coloured pigment until a uniform colour and mix has been achieved.
2. Add Part B (hardener) to Part A.
3. Mix Part A + B continuously for ~2 minutes until a uniformly coloured mix is achieved.
   Note: Avoid excessive mixing to minimise air entrainment.
4. To ensure thorough mixing, pour materials into another container and mix again for at least 1 minute to achieve a smooth and uniform mix.
5. During the final mixing stage, scrape down the sides and bottom of the mixing container with a flat or straight edge trowel at least once to ensure complete mixing.

IMPORTANT

Indentations

Under certain conditions, underfloor heating or high ambient temperatures combined with high point loading may lead to indentations in the resin.

IMPORTANT

Temporary heating

If temporary heating is required, do not use gas, oil, paraffin or other fossil fuel heaters. These produce large quantities of both carbon dioxide and water vapour, which may adversely affect the finish.

• For heating, use only electric powered warm air blower systems.

IMPORTANT

Ventilation in confined spaces

Always ensure good ventilation when applying the Product in a confined space.

IMPORTANT

Temporary moisture barrier

If the substrate moisture content measured with the CM-method is > 4 % by weight or > 6% using the Sika®-Tramex meter , apply a temporary moisture barrier consisting of Sikafloor® EpoCem®.

• Contact Sika technical services for more information.

PRIMER

1. Pour mixed primer (2540W + 5% water) onto the prepared substrate and apply by brush, roller or squeegee.
2. Back roller in two directions at right angles to each other.
   Note: Ensure a continuous, pore free coat covers the substrate. If necessary, apply two priming coats.
3. Confirm waiting / overcoating time has been achieved before applying subsequent products. Refer to individual primer Product Data Sheet.

COATING

1. Apply the Product onto the prepared substrate using a short-piled roller in two directions at right angles to each other.
   Note: A seamless finish can be achieved if a ‘wet’ edge is maintained during application.

Clean all tools and application equipment with water immediately after use. Hardened material can only be removed mechanically.