Sikafloor®-158 W Fast Barrier
RAPID-DRYING HYDROSTATIC MOISTURE & INCONTINENCE BARRIER
Sikafloor®-158 W Fast Barrier is a rapid-drying, 2-component, water based epoxy resin that chemically cures to form a permanent hydrostatic barrier.
- Very Low VOC
- Very Low Moisture Vapour Transmission 1 coat = (3.7gm/m2/24hrs) as per ASTM E96
- Water-based - User Friendly
- Green Star Certified
- Very low odour during application
- Single application on most substrates
- Solvent free
- Non DG storage
- Great penetration into porous construction materials
- Easy mix ratio 2:1 A-B
- Rapid drying 2-3hrs @ 23°C
- Highly fluid and easy to apply
- Resist up to 4 bar negative water pressure
- Suitable for use with underfloor heating
Usage
Applied in combination with suitable materials from Sikafloor®, SikaBond®, Sikadur®, SikaTite® & Davco® ranges.- To stop rising moisture in concrete on grade
- To stop rising moisture on green concrete
- To bind/consolidate a weakened or damaged concrete surface
- To act as an incontinence barrier for concrete in Aged & Health Care facilities
- Can be used under Sikafloor Epoxy Flooring System
- Designed for use in conjunction with Sikabond® wood flooring adhesives
Advantages
- Very Low VOC
- Very Low Moisture Vapour Transmission 1 coat = (3.7gm/m2/24hrs) as per ASTM E96
- Water-based - User Friendly
- Green Star Certified
- Very low odour during application
- Single application on most substrates
- Solvent free
- Non DG storage
- Great penetration into porous construction materials
- Easy mix ratio 2:1 A-B
- Rapid drying 2-3hrs @ 23°C
- Highly fluid and easy to apply
- Resist up to 4 bar negative water pressure
- Suitable for use with underfloor heating
Packaging
2.8kg part A & 1.4kg part B = 4.2kg kit (3.9L)
12kg part A & 6kg part B = 18kg kit (16.66L)
Colour
Wet - White
Cured - Transparent (CLEAR)
Product Details
APPROVALS / CERTIFICATES
- Water Vapour Transmission (ASTM E96)
- Green Star (VOC-SCQMD Rule 1168)
- Negative Hydrostatic Pressure - MTC test report
Composition
2-Component, water-based, epoxy resin
Shelf life
Sikafloor®-158 W Fast Barrier has a shelf life of 15 months from the date of production, if stored properly in undamaged, original, sealed packaging.
Storage conditions
Sikafloor®-158 W Fast Barrier should be stored in cool dry conditions at all times. Protected from direct sunlight and keep at temperatures between +5 °C and +35 °C.
Density
~1.08 kg/l (mixed)
Volatile organic compound (VOC) content
4 grams per litre
Application
Mixing ratio
Component A : Component B = 2:1 (by weight)
Substrate temperature
+10°C min. / +30°C max.
Substrate moisture content
- In-situ probe test up to 100% RH
All testing/readings should conform with relevant AS/NZ standards
Pot Life
| +15°C | 40min |
| +23°C | 30min |
| +30°C | 15min |
Note, Mixed Sikafloor®-158 W Fast Barrier stays liquid when pot life is
over. Only mix the amount of product that will be consumed directly.
DO NOT USE mixed material after pot life has expired and product begins to thicken.
Waiting time to overcoating
Over-coating with a suitable Sika® - Non-porous primer, Adhesive or a second coat of Sikafloor®-158 W Fast Barrier may be applied no sooner
than 2hrs @ +23 °C.
Note:
Drying is dependent on temperature, air flow & relative humidity. Increased air flow will help with drying speeds in cooler temperatures.
Applied product ready for use
2hrs+
Consumption
| Smooth concrete surface | 4-6m2/L, |
| Smooth cement based compound | 4-6m2/L, |
| Mechanically profiled or very porous surface may require 2 coats | 4-6m2/L, on first coat 6-8m2/L on second coat |
Consumption average is dependent on the absorbency of the substrate.
EQUIPMENT
- Low speed electric drill and mixing paddle required for 18kg kit
- ~10mm nap roller
MIXING
4.2kg kit:
Plug the component B upright on the component A can and wait until the component B is empty, then close the cap of the component A can. After combining component A and component B in the correct ratio, shake the can thoroughly. A minimum shaking time of 1 minute is required. Re-shake is required if the mixture appearance is still inhomogeneous.
18kg kit:
Pour 12kg part A into 6kg part B (2:1) then mix with an electric drill and paddle (Paint Mixer Type) at a low speed to reduce air entrapment. Using a paint stick or similar is not sufficient to mix the product. A mixing time of 2-3 minutes shall be observed. Mixing shall continue until a homogeneous mix has been achieved. Scrape sides and bottom of pails to ensure all contents are thoroughly mixed together. Unmixed material applied to the floor will not cure properly.
APPLICATION
Porous Surface
Apply 1 generous coat of Sikafloor®-158 Fast Barrier to the substrate using a 10mm nap roller, ensuring that a continuous coat is achieved over the entire surface (MUST produce a wet reflective appearance-CLEAR). On particularly porous sections where the initial coat is absorbed immediately, re-apply directly.
Very Porous Surface
On very porous or mechanically prepared surfaces a second coat is recommended.
| Application | Coatings | Result |
| Moisture Barrier | Minimum 1 coat | Wet reflective appearance (CLEAR) |
| Incontinence Barrier | Minimum 1 coat | Wet reflective appearance (CLEAR) |
| Substrate Consolidation | Minimum 1 coat | Wet reflective appearance (CLEAR) |
| Moisture Barrier Consolidation | Minimum 2 coats | Wet reflective appearance (CLEAR) |
Note:
Waiting time between coats is no sooner than 2hrs. Subsequent applications of Sikafloor Systems - Refer to relevant System Method Statement.
For use with Sikafloor Epoxy Systems
Sikafloor®-158 W Fast Barrier Can be used in double primer applications where required, For Self Levelling and roller Epoxy or PU flooring applications, Sikafloor ®-158 W Fast Barrier must be over coated with Sikafloor 161 Roller applied epoxy before any further applications of subsequent products can be applied Sikafloor®-158 W Fast Barrier can be re coated with Sikafloor 161 Roller applied epoxy @ 3hrs @ 23degrees C, the subsequent flooring system can then be applied.
Example System Builds can be seen below:
| Moisture Barrier/Primer, Penatrative selaer Sikafloor®-158 W Fast Barrier | 1 x layer | Wet reflective appearance (CLEAR) |
| Primer: Sikafloor 161, In either roller applied or scrach coat application | 1 x layer | 0.3kg/m2 Minimum (As Required) |
| Body Coat: Sikafloor Epoxies: 264, 264T, 263SL or Sikafloor Polyurethane: 376, 377 can now be applied | 1 x layer | as required by System Data Sheet |
CLEANING OF EQUIPMENT
Clean all tools and application equipment with water immediately after use.