Sikaflex® PRO-3

• Conformity with LEED v4 EQc 2: Low-Emitting Materials
• VOC emission classification GEV-Emicode EC1^PLUS, license number 3206/20.10.00

• CE Marking and Declaration of Performance to EN 15651-4 - Sealants for non-structural use in joints in buildings - Sealants for pedestrian walkways. Classification: PW EXT-INT CC 25 HM
• CE Marking and Declaration of Performance to EN 14188-2 - Joint fillers and sealants - Cold applied joint sealants
• Chemical Resistance. DIN EN 14187, SKZ, Test report No. 127980/17-IV
• Performance Test EN 15651-4, SKZ, Report, 94931/11-I-E
• Biological Resistance, ISO 846, Fraunhofer, Certificate, No SI 1103-544
• Cold applied sealants, EN 14188-2, SKZ, Report, No 94931/11-IV
• Determination of staining, ASTM C 1248-04, SKZ, Report, No 98947/11-V
• Determination of staining, ISO 16938-1, SKZ, Report, No 98947/11-II
• ISO 11600 F-class 25 HM, SKZ, Report, No 94931/11-II
• Standard specification for elastic joint sealants, ASTM C920-11 Class 35, ASTM, Report, No 0314920-SIKA
• Migration behaviour EN 1186, EN 13130, CEN/TS 14234, ISEGA, Certificate No. 48644 U 18
• Outgassing TVOC, CSM procedures, Fraunhofer, Certificate, No SI 1103-544
• Resistance against diesel and jet fuel, DIBt Guidelines, SKZ, Test report No. 94931/11-V
• Sealants in waste water systems, DIBt Guidelines, SKZ, Report, No 94931/11-III

Polyurethane i-Cure® Technology

15 months from date of production

The product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +25 °C. Always refer to packaging.

EN 15651-4: PW EXT-INT CC 25 HM

EN 14188-2 - Joint fillers and sealants - Cold applied joint sealants

For chemical resistance refer to the following report: Chemical Resistance. DIN EN 14187, Sikaflex® PRO-3 (SL), SKZ, Report, 127980/17-IV

For resistance against water and salt water refer to the following report: Performance Test EN 15651-4, Sikaflex® PRO-3, SKZ, Report, 94931/11-I-E

−40 °C to +70 °C

The joint width must be designed to suit the movement capability of the sealant. The joint width must be ≥ 10 mm and ≤ 40 mm. A width to depth ratio of 1:0,8 must be maintained (for exceptions, see table below).

Typical joint widths for joints between concrete elements for interior applications

Typical joint widths for joints between concrete elements for exterior applications

All joints must be correctly designed and dimensioned in accordance with the relevant standards and codes of practice before their construction. The basis for calculation of the necessary joint widths are the type of structure, dimensions, technical values of the adjacent building materials, joint sealing material and the specific exposure of the building and the joints.

For larger joints, contact Sika ® Technical Services for additional information.

Use closed cell, polyethylene foam backing rod

+5 °C min./+40 °C max.

+5 °C min./+40 °C max. Minimum +3 °C above dew point temperature

* Sika Corporate Quality Procedure

The substrate must be clean, dry, sound and free from oils, grease, dust, cement laitance and loose or friable particles.

Removal techniques such as wire brushing, grinding, grit blasting or other suitable mechanical tools can be used.

Damaged joint edges can be repaired with suitable Sika repair products

Where joints in substrate are saw cut: after sawing, all slurry material must be flushed away and joint surfaces allowed to dry.

All dust, loose and friable material must be completely removed from all surfaces before application of any activators, primers or sealant.

For optimum adhesion, joint durability and critical, high performance applications such as joints on multi-storey buildings, highly stressed joints, extreme weather exposure or water immersion / exposure, the following priming and/or pre-treatment procedures must be followed:

Non-porous substrates
Aluminium, anodised aluminium, stainless steel, PVC, galvanised steel, powder coated metals or glazed tiles: slightly roughen surface with a fine abrasive pad. Clean and pre-treat using Sika® Aktivator-205 applied with a clean cloth.

Before sealing, allow a waiting time of > 15 minutes (< 6 hours).

Other metals, such as copper, brass and titanium-zinc: clean and pre-treat using Sika® Aktivator-205 applied with a clean cloth. After a waiting time of > 15 minutes (< 6 hours). Apply Sika® Primer-3 N applied by brush. Before sealing, allow a waiting time of > 30 minutes (< 8 hours)

PVC has to be cleaned and pre-treated using Sika® Primer-215 applied with a brush. Before sealing, allow a waiting time of > 30 minutes (< 8 hours).

Porous substrates
Concrete, aerated concrete and cement-based renders, mortars and bricks surfaces must be primed using Sika® Primer-3 N or Sika® Primer-210 applied by brush.

Before sealing, allow a waiting time of > 30 minutes (< 8 hours).

Adhesion tests on project specific substrates must be performed and procedures agreed with all parties before full project application.

Note: Primers and activators are adhesion promoters and not an alternative to improve poor preparation / cleaning of the joint surface. Primers also improve the long-term adhesion performance of the sealed joint.

Contact  Sika®  Technical Services for additional information.

1-part ready to use

Clean all tools and application equipment with Sika® Remover-208 immediately after use. Hardened material can only be removed mechanically. For cleaning skin, use Sika® Cleaning Wipes-100.