Sikafloor®-315 N

12 months in unopened container

Store dry between 40° - 90°F (4°- 32°C)

Pull-off Strength - Primed Concrete

Please consult Sikafloor Technical Services.

1 : 2

Precondition material for at least 24 hours between 65° to 75 °F (18° to 24 °C)

Minimum/Maximum 50˚/85˚F (10˚/30˚C)

Minimum ambient humidity 30%
Maximum ambient humidity 75% (during application and curing)

Beware of condensation!
The substrate must be at least 5˚F (3˚C) above the Dew Point to reduce the risk of condensation, which may lead to adhesion failure or “blushing” on the floor finish. Be aware that the substrate temperature may be lower than the ambient temperature.

Minimum/Maximum 50˚/85˚F (10˚/30˚C). Substrate temperature must be at least 5˚F (3˚C) above measured Dew Point.

Mixing and Application must adhere to Material, Ambient and Substrate temperatures listed above or a decrease in product workability and slower cure rates will occur.

*Do not apply after indicated Pot Life is exceeded. End of Pot Life is not visible. Material will appear liquid, but is unusable and will result in poor adhesion.

Cure times may be significantly decreased with the use of Sikafloor-372 Urethane Accelerator. Refer to the Sikafloor-372 Urethane Accelerator for complete technical information.

Before applying second coat of Sikafloor®-315 N allow:

Coverage of materials on a primed or prepared substrate will vary depending on the porosity or density, profile and texture of the substrate. The theoretical coverages are:

Gloss Finish: Sikafloor®-315 N Clear applied at 4 - 10 wet mils (160 - 401 sq. ft./gal) per coat

Textured Semi-Gloss Finish: Sikafloor®-315 N applied at 2 - 4 wet mils (401 - 801 sq. ft./gal) per coat. Note: This requires the addition of the Part C wear additive. Product will not cure properly if applied at excessive thickness.

Mixing for Clear Application = Part A Clear + Part B
Mix Ratio: 1 Part A : 2 Part B by Volume
Premixing of Part A is necessary to ensure product uniformity. If mixing a partial unit, it is essential that the Part A component be mixed immediately prior to measuring out. Material separates quickly, measure out necessary quantity immediately after mixing. Empty the entire contents of the Component B (Hardener) into the Component A (Resin) in a clean bucket/container large enough to accommodate the mix size quantity. Mix at low speed for 3 minutes (300 - 450 rpm). Be careful not to introduce any air while mixing. Make sure the contents are completely mixed to avoid any weak or partially cured spots in the coating. During the mixing operation, scrape down the sides and bottom of the container with a flat or straight edge tool at least once to ensure complete mixing.

Note: Care must be taken not to use product beyond its recommended pot life. Material will appear liquid, but is unusable and will result in poor adhesion.

Semi-gloss Finish: Requires use of the wear aggregate. Premix as above. Empty the entire contents of the Component B (Hardener) into the Component A (Resin) into a clean bucket/container large enough to accommodate the mix size quantity. Mix at low speed for 1 minute (300 - 450 rpm). Slowly add the Component C (Wear Aggregate) to the mix material under agitation. Mix for 2 minutes.

Note: Do not dump wear aggregate into mix! Be careful not to introduce any air bubbles while mixing. Make sure the contents are completely mixed to avoid any weak or partially cured spots in the coating. During the mixing operation, scrape down the sides and bottom of the container with a flat or straight edge trowel at least once to ensure complete mixing.

Do not mix more material than can be applied within the working time limits (i.e. Pot Life) at actual temperature.

Do not hand mix Sikafloor materials. Mechanically mix only.

Do not thin this product. Addition of thinners (e.g. water, solvent, etc.) will slow cure and reduce ultimate properties of this product. Use of thinners will void any applicable Sika warranty.

General Requirements: It is extremely important to thoroughly clean the primed surface before application of Sikafloor®-315 N. Dust particles, dirt, steel shot and other contaminates will be permanently sealed into the cured film appearing as surface defects on high gloss, thin mil coatings. Roller covers should be low nap, lint free and of high quality to minimize the appearance and frequency of entrapped roller fibers.

Application of Sikafloor®-315 N for Glossy Finish using a Roller:
Sikafloor®-315 N is applied with an 18 inch (454 mm) roller, 1/4 or 3/8-inch (6 - 10 mm) nap, solvent resistant roller cover at a thickness of 4 - 10 mils. The floor area to be coated should be divided into sections that can be done completely in one application sequence. Sections should be divided at expansion joints or doorways when possible. The end of a section should be taped off to form a straight, clean edge for an adjacent section. Pour the material into a roller tray and saturate the roller, remove the excess material by lightly rolling it in the tray. Apply 3 pairs of 8 - 10 foot long paths on to the floor. Spread the material with roller passes perpendicular to the originally applied paths. This material may be aggressively rolled to even out the application. It is extremely important to apply the coating at a rate of 4 - 6 mils to achieve proper appearance, texture, and color stability. If material is applied too heavy, the coating may create microblisters. If the material is applied too thin, the coating gloss levels may vary. Product will not cure properly if applied at excessive thickness. Do not exceed 10 mils.

Application of Sikafloor®-315 N for Glossy Finish using a Flat Squeegee, only for use without wear aggregate:
Pour a thin ribbon, approximately 6’’- 8’’ wide of Sikafloor®-315 N onto the floor surface. Using a flat squeegee spread the material at the 160 - 400 sq. feet per gallon. Avoid leaving puddles of the Sikafloor®-315 N on the floor surface. Using a 3/8’’ nap roller, back roll the material in the opposite direction that it was squeegee applied. Continue to back roll the material to achieve even coverage across the floor. It is extremely important to apply this material at a rate of 4 – 10 mils (WFT). To finish, the Sikafloor®-315 N should be cross rolled; uninterrupted across the entire width of the floor. This will help reduce roller marks. If material is applied too heavy, the coating may create micro-blisters, if the material is applied too thin, the coating gloss levels may vary. Product will not cure properly if applied at excessive thickness. Do not exceed 10 mils.

Application of Sikafloor®-315 N for Semi Gloss Finish using a Roller, Use of the Wear Aggregate required:

Sikafloor®-315 N is applied with an 18 inch (454 mm) roller, 3/8-inch (10 mm) nap, solvent resistant roller cover at a thickness of 2 - 4 mils (0.075 mm). The floor area to be coated should be divided into sections that can be done completely in one application sequence. Sections should be divided at expansion joints or doorways when possible. The end of a section should be taped off to form a straight clean edge for an adjacent section. Pour the material in a roller tray and saturate the roller, remove the excess material by lightly rolling it in the tray. It is important to apply the coating uniformly at a rate of 2 - 4 mils to achieve proper appearance. If material is applied too heavy, the coating may create micro-blisters or result in loss of aggregate texture. If material is applied too thin, the coating gloss level may vary. Do not exceed 4 mils. It is very important to remix the material often with the roller in the tray to keep the aggregate from settling at the bottom of the mixing container. It is important to remix the remaining material in the mixing container before the material is poured into the tray. This will ensure that the Wear Aggregate is evenly dispersed in the Sikafloor®-315 N. Cross roll the entire area with straight uninterrupted passes across the entire width of the floor. This will reduce roller marks. If appearance is still not uniform after a few of these passes, repeat this procedure.

Note: Care must be taken not to use product beyond its recommended pot life. Material will appear liquid, but is unusable and will result in poor adhesion.

Application: Apply the coating to the prepared substrate which should be pore-free and pinhole-free. If necessary, apply an additional coat of a suitable material to ensure the substrate is pore-free and pinhole-free and provides uniform and complete coverage over the entire substrate.

• Do not apply while ambient and substrate temperatures are rising, as pinholes may occur. Ensure there is no vapor drive at the time of application. Refer to ASTM D4263, may be used for a visual indication of vapor drive.
• Sikafloor®-315 N UV blocking aliphatic polyurethane coating may not completely prevent discoloration of underlying coatings in some applications.
• Do not apply Sikafloor to concrete substrate containing aggregates susceptible to ASR (Alkali Silica Reaction) due to risk of natural alkali redistribution below the Sikafloor product after application. If concrete substrate has or is suspected to have ASR (Alkali Silica Reaction) present, do not proceed. Consult with design professional prior to use.
• Any aggregate used with Sikafloor systems must be non-reactive and oven-dried.
• This product is not designed for negative side waterproofing.
• Typically not recommended for exterior slabs on grade where freeze/thaw conditions may exist.
• Use of unvented heaters and certain heat sources may result in defects (e.g. blushing, whitening, debonding, etc.).
• Mechanical, chemical & physical properties will be fully achieved at full cure.
• Beware of air flow and changes in air flow. Introduction of dust, debris, and particles, etc. may result in surface imperfections and other defects.
• For professional use only by experienced applicators.The previous version of Sikafloor®-315 is not compatible with this new formulation. Do not mix components from Sikafloor®-315 and Sikafloor®-315 N.