
Sikalastic®-632 R
Sikalastic®-632 R is a polyurethane, 1-part, rapid cure, cold-applied, moisture cured, crack- bridging, liquid applied membrane. Provides a seamless, chemical resistant, durable waterproofing solution for flat or sloping roofs, external balcony and terrace decks.
- Resistant to root penetration
- Rapid curing
- 1-part, cold applied
- Resistant to chemical exposure
- No mixing, ready to use
- Seamless
- Moisture triggered chemistry (MTC)
- Moves with normal thermal movement
- Reinforced system provides waterproofing complex detailing of roof or deck penetrations
- Rain resistant almost immediately on application
- Vapour permeable, allows substrate to breath
Usage
Waterproofing for both new construction and refurbishment of:- Flat and sloping roof structures
- External balcony and terrace decks
- Roofs with numerous details such as penetrations, drains, roof lights and complex geometry
- Failing roofs to extend service life
Advantages
- Resistant to root penetration
- Rapid curing
- 1-part, cold applied
- Resistant to chemical exposure
- No mixing, ready to use
- Seamless
- Moisture triggered chemistry (MTC)
- Moves with normal thermal movement
- Reinforced system provides waterproofing complex detailing of roof or deck penetrations
- Rain resistant almost immediately on application
- Vapour permeable, allows substrate to breath
Packaging
21 kg container
Colour
Light grey
Product Details
APPROVALS / STANDARDS
- International and local test results are available upon request.
Chemical base
Aromatic polyurethane
Shelf life
9 months from date of production
Storage conditions
Product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +10 °C and +30 °C.
Always refer to packaging.
Density
~1,40 kg/l | (EN ISO 1183-1) |
Value at +23 °C
Solid content by weight
~90 % (+23 °C / 50 % r.h.)
Solid content by volume
~82 % (+23 °C / 50 % r.h.)
Volatile organic compound (VOC) content
≤ 150 g/L | (ASTM D2369-98 / USEPA Method 24) |
System Structure
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 systems | Roof Coating systems |
SikaRoof® MTC-05 UV AP | SikaRoof® Pro -1 AP |
SikaRoof® MTC-08 UV AP | SikaRoof® Pro -3 AP |
SikaRoof® MTC-10 UV AP |
Consumption of Sikalastic®-632 R base coats within the systems:
System | 1st base coat | 2nd base coat |
SikaRoof® MTC-05 UV AP | ≥ 1,05 kg/m2 | ≥ 0,70 kg/m2 |
SikaRoof® MTC-08 UV AP | ≥ 1,05 kg/m2 | ≥ 1,05 kg/m2 |
SikaRoof® MTC-10 UV AP | ≥ 1,40 kg/m2 | ≥ 1,05 kg/m2 |
SikaRoof® Pro -1 AP | ≥ 1,05 kg/m2 | ≥ 1,70 kg/m2 |
SikaRoof® Pro -3 AP | ≥ 1,05 kg/m2 | ≥ 1,05 kg/m2 |
Shore A Hardness
~62 | (ASTM C836-03) |
Tensile Strength
Removing air inside fresh material before producing cure film(*) |
≥ 3.5 MPa | (ASTM D412) |
Without removal of air inside |
≥ 2.0 MPa | (ASTM D412) |
(*): Refer to Sika Method Statement SK_02091501
Tensile Adhesion Strength
≥ 1.0 N/mm2 | (ASTM D4541) |
Tear Strength
Removing air inside fresh material before producing cure film(*) |
≥ 15 N/mm | (ASTM D624) |
Without removing air inside |
≥ 10 N/mm | (ASTM D624) |
(*): Refer to Sika Method Statement SK_02091501
Crack Bridging Ability
2 mm (no cracks) | (ASTM C836) |
Service temperature
–35 °C min. / +80 °C max.
Dry film thickness
Refer to the individual System Data Sheet.
Application
Ambient Air Temperature
+10 °C min. / +40 °C max.
Relative Air Humidity
5 % min / 85 % max.
Substrate Temperature
+5 °C min. / +60 °C max.
Dew Point
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.
Substrate Moisture Content
Refer to Product Data Sheet of the appropriate primer
Substrate Pre-Treatment
Reference must be made to the Sika® Method Statement: Sikalastic®-632 R.
Substrate | Primer |
Cementitious including concrete slabs | Sikalastic® U Primer / Sikafloor®-161 HC |
Brick and Stone | Sikalastic® U Primer / Sikafloor®-161 HC |
Ceramic tiles (unglazed) | Sikalastic® U Primer / Sikafloor®-161 HC |
Bituminous coatings (aged) / Bituminous felt (aged) | Sikalastic® Metal Primer |
Metals * | Sikalastic® Metal Primer |
Existing SikaRoof® MTC System | Sika® Reactivation Primer |
Wooden substrates** | Sikalastic® Primer C / Sika® Bonding Primer. |
* 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
Pot Life
Product will cure rapidly in high temperatures combined with high air humidity. Skin formation starts after ~1 hour (+20 °C / 50 % r.h.).
Waiting Time / Overcoating
Ambient temperature | Relative humidity | Minimum |
+10 °C | 50 % | ~12 hours |
+20 °C | 50 % | ~6 hours |
+30 °C | 50 % | ~3 hours |
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.
Drying time
Ambient conditions | Rain resistant * | Touch dry | Full cure |
+20 °C / 55 % r.h. | 2 hours | 2 hours | 6 hours |
+30 °C / 85 % r.h. | 1 hour | 1 hour | 3 hours |
* 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.
SUBSTRATE PREPARATION
Suitable substrates: Cementitious, brick, stone, aged bituminous coatings and felts, metals*, asbestos cement, ceramic tiles (unglazed), wood. *Ferrous or galvanised metals, lead, copper, aluminium, brass or stainless steel, factory coated metal.
Reference must be made to the Sika® Method Statement: Sikalastic®-632 R
MIXING
Mixing is not required, however if the product has separated, stir gently by manual or mechanical equipment thoroughly to achieve a uniform colour. Stirring gently will minimise air entrainment.
APPLICATION
Strictly follow installation procedures as defined in method statements, application manuals and working instructions which must always be adjusted to the actual site conditions.
Reference must be made to the Sika® Method Statement: Sikalastic®-632 R for full application details.
CLEANING OF TOOLS
Clean all tools and application equipment with Thinner C immediately after use. Hardened material can only be removed mechanically.