Sikalastic®-859 R Ultimate
TWO-COMPONENT SPRAY APPLIED ROOF WATERPROOFING MEMBRANE
Sikalastic®-859 R Ultimate is a two component, elastic, crackbridging, rapid-curing modified polyurethane/ polyurea- hybrid membrane. Sikalastic®-859 R Ultimate is applied by two compontent hot spray equipment.
- Friend of the environment - does not contain VOC
- No weight losses
- No secondary reaction products
- Resistant to atmospheric agents
- Low permeability values
- Application at temperatures between +5 °C and + 40 °C
Usage
- For use as waterproofing membrane on new roof structures and for refurbishment of old roofs
- For use on fully exposed roofs to UV, protected by the use of an topcoat
- For use as protective coating (EN1504-2) for concrete structures on non-trafficked areas or use as a waterproofing membrane
- For other concrete structures and on non-trafficked concrete areas with an additional top coat for UV-protection.
Advantages
- Friend of the environment - does not contain VOC
- No weight losses
- No secondary reaction products
- Resistant to atmospheric agents
- Low permeability values
- Application at temperatures between +5 °C and + 40 °C
Packaging
Sikalastic®-859 R Ultimate systems are typically supplied in two components:
Part A (ISO) in drums of 225 kg.
Part B (RESIN) in drums of 205 kg.
Colour
Grey
Product Details
APPROVALS / CERTIFICATES
CE marked according to the product standard EN 1504-2: 2004 - Products and systems for the protection and repair of concrete structures.
The product is CE marked in accordance with attestation system 4 with reference to the use of physical resistance.
Composition
Modified Polyurethane/ Polyurea-Hybrid
Shelf life
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. Higher storage temperatures may reduce shelf life of product. Reference shall also be made to the storage recommendations within the safety data sheet.
Density
| Part A (ISO) | 1,11 - 1,12 kg/l |
| Part B (RESIN) | 1,05 – 1.10 kg/l |
All density values at +25 °C
Viscosity
| Part A (ISO) | 500 - 800 mPas |
| Part B (RESIN) | 300 - 500 mPas |
Viscosity values determined at +25°C
System structure
Exposed Roof Waterproofing
Sikalastic®-859 R Ultimate is applied in one coat and sealed with one coat Sikalastic®-701
| Layer | Product | Consumption |
| 1. Primer | please refer to substrate pre-treatment | please refer to PDS of the primer |
| 2. Waterproofing | Sikalastic®-859 R Ultimate | ≥ 1,6 kg/m2 |
| 3. UV Protection | Sikalastic®-701 | ~0,3 kg/m2 |
Non-Exposed Roof Waterproofing
Sikalastic®-859 R Ultimate is applied in one coat
| Layer | Product | Consumption |
| 1. Primer | please refer to substrate pre-treatment | please refer to PDS of the primer |
| 2. Waterproofing | Sikalastic®-859 R Ultimate | ≥ 2,1 kg/m2 |
Note: These figures are theoretical and do not include for any additional material required due to surface porosity, surface profile, variations in level and wastage.
Shore A hardness
| 90- 94 | UNI EN ISO 868:2005 |
Shore D Hardness
| 38- 42 | UNI EN ISO 868:2005 |
Abrasion resistance
| approx. 100 mg | EN 5470-1:2001 |
Tensile strength
| 13 - 16 MPa | ISO 527-1:2012 |
Tear strength
| 100- 130 KN/m | UNI ISO 34-1:2010 |
Chemical resistance
High resistance to a wide range of chemicals. For more information contact our Technical Department.
Service temperature
min. -30oC / max. +140oC
Dry film thickness
Exposed Roof Waterproofing
| Waterproofing | ~1,6 mm |
| UV Protection | ~0,2 - 0,5 mm |
| Total* | ~1,8 - 2,1 mm |
* depending on the top coat selection
Non-Exposed Roof Waterproofing
| Waterproofing | ~2,1 mm |
Application
Mixing ratio
Part A : Part B = 1 : 1 (by volume)
Product temperature
| Part A | +60 to +80 °C |
| Part B | +60 to +80 °C |
| Hose | +60 to +80 °C |
Ambient air temperature
+5 °C min. / +40 °C max.
Dew point
≥3 °C above dew point
Substrate moisture content
≤ 4 % pbw moisture content.
Test method: Sika®-Tramex meter, CM - measurement on Oven-dry method No rising moisture according to ASTM (Polyethylene-sheet).
Substrate pre-treatment
| Substrate | Primer |
| Cementitious substrates | Sika® Concrete Primer or Sika®Primer EP-20TR lightly broadcast with quartz sand, 0,3–0,8 mm |
| Ceramic tiles (unglazed), and concrete slabs | Sika® Concrete Primer |
| Bituminous felt | Sikalastic® Metal Primer |
| Bituminous coatings | Sikalastic® Metal Primer |
| Metals Ferrous or galvanised metals, lead, copper,aluminium, brass or stainless steel | Sikalastic® Metal Primer |
For the consumption rates and waiting time / overcoating please refer to the PDS of the appropriate primer. Other substrates must be tested for their compatibility. If in doubt, apply a test area first.
Waiting time to overcoating
Before applying Sikalastic®-859 R Ultimate on Sika®Primer EP-20TR allow:
| Substrate temperature | Minimum waiting time | Maximum waiting time1 |
| +10 °C | 24 hours | 1 month |
| +20 °C | 12 hours | 1 month |
| +30 °C | 8 hours | 1 month |
| +45 °C | 6 hours | 1 month |
Before applying Sikalastic®-859 R Ultimate on Sikalastic®-859 R Ultimate allow:
| Substrate temperature | Minimum waiting time | Maximum waiting time2 |
| +10 °C | 5 minutes | 7 hours |
| +20 °C | 5 minutes | 6 hours |
| +30 °C | 5 minutes | 5 hour |
| +45 °C | 5 minutes | 5 hour |
Before applying Sikalastic®-701 on Sikalastic®-859 R Ultimate allow:
| Substrate temperature | Minimum waiting time | Maximum waiting time2 |
| +10 °C | 1 hour | 24 hours |
| +20 °C | 1 hour | 24 hours |
| +30 °C | 1 hour | 24 hours |
| +45 °C | 1 hour | 24 hours |
1 Assuming that any dirt has been carefully removed and any contamination is avoided.
2 If the maximum waiting time is exceeded, Sika® Concrete Primer has to be applied with a consumption rate of 100 g/m2 as an adhesion promoter between the layers.
Gel time: Approx. 5-7 sec. (+25oC)
Note: Times are approximate and will be affected by changing ambient conditions particularly temperature and relative humidity.
Applied product ready for use
When applied correctly the Sikalastic®-859 R Ultimate:
- Develops its rain resistance in ~ 5 minutes
- Can be used for maintenance and next layer applications as stated in the "Waiting Time / Overcoating"
Note: Times are approximate and will be affected by changing ambient conditions particularly temperature and relative humidity.
SUBSTRATE PREPARATION
The surface must be sound, of sufficient strength, clean, dry and free of dirt, oil, grease and other contamination. Depending on the material the substrate must be primed or mechanically cleaned. Grinding may be necessary to level the surface. Suitable substrates are such as: Concrete, bituminous felts and coatings, metal, brickwork, asbestos cement, ceramic tiles.
MIXING
Dose and mix with suitable two-component spray equipment. Maintain recommended product and hose temperature.
Ensure equal pressure of part A + B. The accuracy of pressure, mixing and dosage must be controlled regularly with the equipment.
APPLICATION
Prior the application of Sikalastic®-859 R Ultimate the priming coat if used must have cured tack-free. For the Waiting Time / Overcoating please refer to the PDS of the appropriate primer. Damageable areas (handrails etc.) have to be protected with tape or plastic wrapping.
Waterproofing:
Spray apply Sikalastic®-859 R Ultimate with suitable two-component hot spray equipment. Possible suppliers of spray equipment are Gama, Graco, Isotherm, WiWa, Reaku etc.
UV Protection:
One layer of Sikalastic®-701 applied either by roller or airless spray. For more detailed application engineering information pls. refer to the appropriate method statement.
CLEANING OF EQUIPMENT
Clean all tools and application equipment with Thinner C immediately after use. Hardened and/or cured material can only be removed mechanically.