Sikafloor®-376
Crack-bridging, self-smoothing, phthalate-free, polyurethane flooring resin
Sikafloor®-376 is a 2-part polyurethane, coloured, low-viscosity, phthalate-free flooring resin for medium to heavy wear conditions. It provides a hard-wearing finish and a slip-resistant finish when broadcast with different aggregate grades.
- Good crack-bridging ability
- Good mechanical resistance
- Impermeable to liquids
- Low maintenance
- Easy to apply
- Low VOC emissions
Usage
The Product is used as a:- Broadcast, slip-resistant wearing course with good crack-bridging ability
- Interior and exterior use
- The Product may only be used by experienced professionals.
Advantages
- Good crack-bridging ability
- Good mechanical resistance
- Impermeable to liquids
- Low maintenance
- Easy to apply
- Low VOC emissions
Packaging
Container Part A | 9 kg |
Container Part B | 21 kg |
Container Part A + Part B | 30 kg |
Refer to the current price list for available packaging variations.
Colour
Part A | Light brown, liquid |
Part B | Transparent, liquid |
Cured appearance | Smooth, matt finish |
Cured colour | Light brown |
Product Details
ENVIRONMENTAL INFORMATION
-
Contributes towards satisfying Indoor Environmental Quality (EQ) Credit: Low-Emitting Materials under LEED® v4
-
Contributes towards satisfying Materials and Resources (MR) Credit: Building product disclosure and optimization — Environmental Product Declarations under LEED® v4
-
Environmental Product Declaration (EPD) in accordance with EN 15804. EPD independently verified by Institut für Bauen und Umwelt e.V. (IBU)
-
Sikafloor®-376 is listed on the Eco-Product Directory as environmentally friendly product choice for green building initiatives. (application no.: PL-01565-2023)
APPROVALS / STANDARDS
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
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
Product Declaration
EN 1504-2: Surface protection product for concrete - Coating
EN 13813: Resin screed material for internal use in buildings
Chemical Base
Polyurethane
Shelf Life
12 months from date of production
Storage Conditions
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.
Density
Mixed Product | 1.19 kg/l |
Solid Content by Weight
100 %
Solid Content by Volume
100 %
Shore A Hardness
Cured 14 days at +23 °C | ≥ 60 |
Tensile Strength
≥ 5,0 N/mm2 (14 d / 23 °C / 50 % r.h.) | (DIN 53 504) |
Tensile Adhesion Strength
> 1.5 N/mm² (failure in concrete) | (EN 1542) |
Thermal Resistance
Dry heat in the short term +80 °C
Application
Mixing Ratio
Part A : Part B (by weight) | 30 : 70 |
Product Temperature
Maximum | +30 °C |
Minimum | +10 °C |
Ambient Air Temperature
Maximum | +30 °C |
Minimum | +10 °C |
Relative Air Humidity
Maximum | 80 % r.h. |
Dew Point
Beware of condensation. The substrate and uncured applied product must be at least +3 °C above dew point to reduce the risk of condensation on the surface of the applied product.
Substrate Temperature
Maximum | +30 °C |
Minimum | +10 °C |
Substrate Moisture Content
Refer to the individual primer Product Data Sheet.
Pot Life
+10 °C | 60 minutes |
+20 °C | 30 minutes |
+30 °C | 15 minutes |
Curing Time
Before applying Sikafloor®-376 on Sikafloor®-156/161 allow:
Substrate temperature | Minimum | Maximum |
+10 °C | 1 day | 3 days |
+20 °C | 12 hours | 2 days |
+30 °C | 6 hours | 1 day |
Before applying Sikafloor®-377 on Sikafloor®-376 allow:
Substrate temperature | Minimum | Maximum |
+10 °C | 1 day | 2 days |
+20 °C | 15 hours | 1 day |
+30 °C | 8 hours | 16 hours |
Before applying top coat on broadcast Sikafloor®-376 allow:
Substrate temperature | Minimum | Maximum |
+10 °C | 1 day | -* |
+20 °C | 15 hours | -* |
+30 °C | 8 hours | -* |
* No maximum waiting time with broadcast surfaces.
Times are approximate and will be affected by changing ambient conditions particularly temperature and relative humidity.
Applied Product Ready for Use
Times are approximate and will be affected by changing ambient conditions particularly temperature and relative humidity.
Temperature | Foot traffic | Light traffic | Full cure |
+10 °C | 1 day | 5 days | 10 days |
+20 °C | 15 hours | 3 days | 7 days |
+30 °C | 8 hours | 2 days | 5 days |
Consumption
Filled | 1.2 kg/m² per mm thickness |
EQUIPMENT
MIXING EQUIPMENT
Electric double paddle mixer (>700 W, 300 to 400 rpm)
APPLICATION EQUIPMENT
Pin leveller
Trowels, including serrated
Spiked roller
SUBSTRATE QUALITY
IMPORTANT
Incorrect treatment of cracks
The incorrect assessment and treatment of cracks may lead to a reduced service life and reflective cracking.
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.
SUBSTRATE CONDITION
Cementitious substrates must be structurally sound and of sufficient compressive strength (minimum 25 N/mm2) with a minimum tensile strength of 1.5 N/mm2.
Substrates must be clean, dry and free of contaminants such as dirt, oil, grease, coatings, laitance, surface treatments and loose friable material.
SUBSTRATE PREPARATION
MECHANICAL SUBSTRATE PREPARATION
IMPORTANT
Surface defects due to voids in the substrate
Voids and blow holes in the substrate will weaken the surface and damage the covering Product if not repaired during the preparation process.
- Fully expose blow holes and voids during surface preparation to identify the required repairs.
- Remove weak cementitious substrates.
- Prepare cementitious substrates mechanically using abrasive blast cleaning, abrasive planing or scarifying equipment to remove cement laitance.
- Before applying thin layer resins, remove high spots by grinding.
- Use industrial vacuuming equipment to remove all dust, loose and friable material from the application surface before applying the Product.
- 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.
MIXING
- Mix Part A (resin) until the coloured pigment is dispersed and a uniform colour is achieved.
- Add Part B (hardener) to Part A.
- IMPORTANT Do not mix excessively. Mix Part A + B continuously for ~3 minutes until a uniformly coloured mix is achieved.
- If required add the quartz sand and mix for a further 2 minutes until a uniform mix has been achieved.
- To ensure thorough mixing, pour materials into another container and mix again to achieve a smooth and uniform mix.
- 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.
APPLICATION
IMPORTANT
Strictly follow installation procedures
Strictly follow installation procedures as defined in Method Statements, application manuals and working instructions which must always be adjusted to the actual site conditions.
IMPORTANT
Protect from moisture
After application, protect the Product from damp, condensation and direct water contact for at least 24 hours.
IMPORTANT
Uncured material reacts with water
Uncured material reacts with water of any kind, which leads to foaming.
- During the application, wear head and wrist bands to avoid sweat falling onto the uncured material.
IMPORTANT
No application on rising moisture
Do not apply on substrates with rising moisture.
IMPORTANT
Damaged finish due to heating with fossil fuel heaters
Fossil fuel heaters powered by gas, oil or paraffin produce large quantities of both carbon dioxide and water vapour, which may adversely affect the finish.
- For temporary heating, use only electrically powered warm air blower systems. Do not use gas, oil, paraffin or other fossil fuel heaters.
IMPORTANT
Surface exposure
Do not leave the surface of the Product exposed, application of a seal coat is mandatory.
SELF-SMOOTHING WEARING LAYER
- Pour the mixed Product onto the substrate. Note The consumption is specified in Application Information.
- Apply the Product evenly over the surface with a serrated trowel.
- To achieve a smooth finish, smooth the surface with the flat side of a trowel.
- Back roll the surface in two directions at right angles with a steel spike roller.
SLIP-RESISTANT BROADCAST LAYER
- Pour the mixed Product onto the prepared substrate.
- Apply the Product evenly over the surface with a serrated trowel.
- Back roll the surface in two directions at right angles with a steel spike roller.
- Broadcast the surface with quartz sand or silicon carbide, lightly at first, then to excess.Note The aggregate is dependant on the system build-up. Refer to the relevant System Data Sheet.
- Allow the Product to initially cure and use vacuum extraction equipment to remove all loose sand.
CLEANING OF TOOLS
Clean all tools and application equipment with Sika® Thinner C immediately after use. Hardened material can only be removed mechanically.