SikaHyflex®-402 Connection

• Conformity with LEED v4 EQc 2: Low-Emitting Materials
• VOC emission classification GEV-Emicode EC1^PLUS
• VOC emission classification of building materials RTS M1

• CE Marking and Declaration of Performance to EN 1565-1 - Sealants for non-structural use in joints - Facade elements
• EN ISO 11600: Building construction - Jointing products - Classification and requirements for sealants.

Silane terminated polymer

12 months from the 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 1565-1: F EXT-INT CC 25 LM
• EN ISO 11600: F 25 LM

−40 °C to +70 °C

The joint width must be designed to suit the movement capability of the sealant. The joint width shall be ≥ 10 mm and ≤ 35 mm. A width to depth ratio of 2:1 must be maintained.

Standard joint widths for joints between concrete elements

All joints must be correctly designed and dimensioned in accordance with the relevant standards and codes of practice. 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 rods.

+5 °C to +40 °C

The substrate must be sound, clean, dry and free of all contaminants such as dirt, oil, grease, cement laitance, old sealants and poorly bonded coatings which could affect adhesion of the sealant.

The substrate should be of sufficient strength to cope with the stresses induced by the sealant during movement.

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

All dust, loose and friable material must be completely removed from all surfaces before application of any activators, primers or sealant. Where joints in substrate are saw cut. After sawing, all slurry material must be flushed away and joint surfaces allowed to dry.  

SikaHyflex®-402 Connection adheres without primers and/or activators.

For optimum adhesion, joint durability and critical, high performance applications such as joints on multi-storey buildings, highly stressed joints, extreme weather exposure. The following priming and/or pre-treatment procedures shall 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, cleaned 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. Allow a further waiting time of > 30 minutes (< 8 hours) before sealing.

Porous substrates
Concrete, aerated concrete and cement based renders, mortars and bricks. Prime surface using Sika® Primer-3 N applied by brush.

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

For more detailed advice contact Sika Technical Services for additional information.

Note: Primers 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.

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