Sikafloor®-305 W
2-part PUR matt coloured seal coat part of the Sika Comfortfloor® flooring range
Sikafloor®-305 W is a two part water based, low VOC, polyurethane, coloured matt seal coat.
- Water based
- Very low odour
- Good UV and yellowing resistance
- Easy to clean
Usage
Matt seal coat for Sika ComfortFloor® flooring range, for smooth Sikafloor® polyurethanes and for the Sikafloor® Multidur epoxy range.Advantages
- Water based
- Very low odour
- Good UV and yellowing resistance
- Easy to clean
Packaging
Part A | 8,5 kg containers |
Part B | 1,5 kg containers |
Part A+B | 10 kg ready to mix units |
Colour
Sikafloor®-305 W is matt after final curing. Available in various colour shades and as substrates for local tinting.
Product Details
ENVIRONMENTAL INFORMATION
VOC Emission certificate according to AgBB und DIBt approval requirements (AgBB – Committee for Health-related Evaluation of Building Products, DiBt – German Institute for Building Technology), Eurofins report No. 769855D
APPROVALS / STANDARDS
- Synthetic resin screed material according to EN 13813:2002, Declaration of Performance and provided with the CE marking.
- Coating for surface protection of concrete according to EN 1504-2:2004, Declaration of Performance 0208010400500000031041, certified by notified factory production control certification body 0620, and provided with the CE marking.
- Fire classification acc. to EN 13501-1, Test reports 08-198, 08-199 and CR-13- 167/1, Ghent University
Chemical Base
PUR
Shelf Life
Part A | 6 months from date of production |
Part B | 12 months from date of production |
Storage Conditions
The product must be stored properly in original, unopened and undamaged sealed packaging, in dry conditions at temperatures between +5 °C and +30 °C.
Density
Part A | ~1,33 kg/l |
Part B | ~1,13 kg/l |
Mixed resin | ~1,18 kg/l |
All Density values at +23 °C
Gloss level
Angle | Value |
85° | < 50 |
60° | < 10 |
Shore D Hardness
~84 | (7 days / +23 °C) |
Abrasion Resistance
<1000 mg | (H22/1000/1000) |
Tensile Adhesion Strength
>1,5 N/mm2 (failure in concrete) | (EN 13892-8) |
Chemical Resistance
Resistant to many chemicals. Contact Sika technical service for specific information.
Application
Mixing Ratio
Part A : Part B = 85 : 15 (by weight)
Ambient Air Temperature
+10 °C min. / +30 °C max.
Relative Air Humidity
75 % max.
During curing the relative humidity should not exceed 75 %. Adequate fresh air ventilation must be provided to remove the excess moisture from the curing product.
Dew Point
Beware of condensation!
The substrate and uncured floor must be at least 3 °C above dew point to reduce the risk of condensation or blooming on the floor finish.
Substrate Temperature
+10 °C min. / +30 °C max.
Pot Life
Temperature | Time |
+10 °C | ~80 minutes |
+20 °C | ~60 minutes |
+30 °C | ~30 minutes |
Caution: End of potlife is not noticeable.
Curing Time
Before overcoating Sikafloor®-305 W allow:
Substrate temperature | Minimum | Maximum |
+10 °C | 24 hours | 4 days |
+20 °C | 16 hours | 3 days |
+30 °C | 12 hours | 2 days |
Based on relative humidity of max. 70 % and good ventilation. Times are approximate and will be affected by changing ambient conditions particularly temperature and relative humidity.
Applied Product Ready for Use
Temperature | Foot traffic | Light traffic | Full cure |
+10 °C | ~30 hours | ~48 hours | ~6 days |
+20 °C | ~16 hours | ~24 hours | ~4 days |
+30 °C | ~12 hours | ~18 hours | ~3 days |
Note: Times are approximate and will be affected by changing ambient conditions
Consumption
~0,13–0,15 kg/m²/layer
This figure is theoretical and does not allow for any additional material due to surface porosity, surface profile, variations in level and wastage etc.
When used in high wear conditions, for example where rolling office chairs occur, a double layer Sikafloor®-305 W is highly advisable. A double layer is increasing the mechanical strength of the system and it resistance against office chairs particularly.
MIXING
Prior to mixing, stir part A mechanically. When all of part B has been added to part A, mix continuously for 3 minutes until a uniform mix has been achieved. During the mixing of the Components A and B add 5–7 % of clean water. To ensure thorough mixing pour materials into another container and mix again to achieve a consistent mix. After mixing give the material a rest for 10 minutes. Over mixing must be avoided to minimise air entrainment.
Mixing Tools:
Sikafloor®-305 W must be thoroughly mixed using a low speed electric stirrer (300–400 rpm) or other suitable equipment.
APPLICATION
Prior to application, confirm substrate moisture content, relative humidity and dew point. Uniformly spread Sikafloor®-305 W by using a short pile nylon roller. Sikafloor®-305 W can also be applied by using airless spray equipment. A seamless finish can be achieved if a “wet” edge is maintained during application.
CLEANING OF TOOLS
Clean all tools and application equipment with water immediately after use. Hardened and/or cured material can only be removed mechanically.