Sikalastic®-632 R

• Analysis of Paint USEPA Method 24, Sikalastic®-632 R, Material Lab, Test report No. 172075EN171253(1)
• Hardness, Weight loss, Nonvolatile ASTM C 836-03, Sikalastic®-632 R, SGS Korea, Test report No. CMT2017-1028
• Initial Surface Absorption BS 1881 : Part 208, Sikalastic®-632 R, Department of Science Service Thailand, Test report No. 0307/681
• Root Resistance DIN 4062, Sikalastic®-632 R, kiwa, Test report No. P 10565a-E
• Tensile ASTM D 412 - 06a, Sikalastic®-632 R, SGS Korea, Test report No. CMT2018-2265
• Water Vapour Transmission and Permeance ASTM E96/96M, Sikalastic®-632 R, Korean Testing & Research Institute, Test report No. TAK-2018-121232

Aromatic polyurethane

9 months from date of production

Product must be stored in original, unopened and undamaged sealed packaging in dry conditions .

Always refer to packaging.

Value at +23 °C

~90 % (+23 °C / 50 % r.h.)

~82 % (+23 °C / 50 % r.h.)

Sikalastic®-632 R is part of the following roof waterproofing and coating systems.

Reference must be made to the following System Data Sheets:
Roof Waterproofing System
SikaRoof®MTC-10 UV AP

Resistant to many chemicals. Contact Sika Technical Service for additional information.

–35 °C min. / +80 °C max.

Refer to the individual System Data Sheet

+10 °C min. / +40 °C max.

5 % min / 85 % max.

Beware of condensation.
The substrate and uncured applied membrane must be at least +3 °C above dew point to reduce the risk of condensation or blooming on the membrane finish.

+5 °C min. / +60 °C max.

Refer to Product Data Sheet of the appropriate primer

Reference must be made to the Sika® Method Statement: Sikalastic®-632 R.

* Ferrous or galvanised metals, lead, copper, aluminium, brass or stainless steel; Factory coated metal sheeting must be tested for adhesion before proceeding

** Timber based roof decks require a complete layer of Sikalastic® Carrier

Product will cure rapidly in high temperatures combined with high air humidity. Skin formation starts after ~1 hour (+20 °C / 50 % r.h.).

Please refer to above waiting time when applying the top coat, Sikalastic® 571 Eau Top. Times are approximate and will be affected by changing ambient conditions particularly temperature and relative humidity. If the overcoating time exceeds 2 days, the surface must be cleaned and primed with Sika® Reactivation Primer before continuing.
  

* Be aware the impact of heavy rain or rain showers can physically damage the wet applied membrane.

The initial surface tackiness of the cured Sikalastic®-632 R will disappear within 2 weeks of application.

Times are approximate and will be affected by changing ambient conditions particularly temperature and relative humidity.

Concrete Cementitious Substrate
Cementitious or mineral based substrates must be prepared mechanically using abrasive blast cleaning or scarifying equipment to remove cement laitance and to achieve an open textured surface. Loose friable material and weak concrete must be completely removed and surface defects such as blowholes and voids must be fully exposed. High spots must be removed by e.g. grinding.
Repairs to the substrate, filling of joints, blowholes / voids and surface levelling must be carried out using appropriate products from the  Sikaflex®, Sikafloor®, Sikadur® and Sikagard® range of materials.
Outgassing is a naturally occurring phenomenon of concrete that can produce pinholes in subsequently applied coatings. Primer will be used  on porous concrete and cementitious substrates to block outgassing avoiding pin holing.
 

Asphalt / Bituminous Sheet
Power wash as required. All major cracks should be sealed to allow continuity of the Sikalastic®-632 R system. Asphalt must be carefully  assessed for moisture and/ or air entrapment, grade and surface finish prior to any coating works being carried out. Treat blisters by star cutting and removing any underlying water. Allow to dry and re-adhere using torch.

Any other substrate
For any other substrate to be waterproofed with Sikalastic®-632 R please contact Sika Technical Service team for assessment and substrate preparation proposal.

Prior the application of Sikalastic®-632 R the priming coat if used must have cured tack-free. For the waiting time / overcoating please refer to  the PDS of the relevant primer. Damageable areas (handrails, etc) have to be protected with tape or plastic wrapping. Application can be done with a soft bristle brush, or with a solvent resistant, “non-shedding” synthetic nylon roller. Contact Sika Technical Service team for application using airless spray.

Detailing
Always begin the installation with the details prior to the installation of the horizontal areas. Follow same process as reinforced system.

Coating System
Apply the first layer of Sikalastic®-632 R maintaining a wet edge to ensure a seamless membrane. Once the first layer has cured enough (see overcoating time window) apply the second layer of Sikalastic®-632 R.

Reinforced System
Apply the first layer of Sikalastic®-632 R maintaining a wet edge to ensure a seamless membrane. Roll-in the reinforcement Sika Reemat or  Sikalastic® Fleece and overlap by minimum 5 cm. The roller may require only a little bit of extra material to keep wetted but no further significant material is added at this stage. Once the first layer has cured enough (see overcoating time window) apply the second layer of  Sikalastic®-632 R.

Clean all tools and application equipment with Thinner C immediately after use. Hardened and/or cured material can only be removed  mechanically.