Sikaflex® AT Connection

• Conformity with LEED v4 EQc 2: Low-Emitting Materials
• VOC emission classification GEV-Emicode EC1^PLUS, license number 1830/20.10.00

• CE Marking and Declaration of Performance to EN 15651-1 - Sealants for non-structural use in joints in buildings - Facade elements - F-EXT-INT CC
• CE Marking and Declaration of Performance to European Technical Assessment ETA 17/0980, based on EAD 350141-00-1106 - Fire stopping and fire sealing products, linear joint and gap seals
• ISO 11600-F Class 25HM, Sikaflex AT-Connection, SKZ, Report, No 102557/12-II
• Cleanroom Suitability Sikafloor®, Fraunhofer IPA, Report No. SI 1008-533

Silane terminated polymer

12 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 15651-1: F EXT-INT CC

ISO 11600: F Class 25HM

−40 °C to +70 °C

The joint dimensions must be designed to suit the movement capability of the sealant. The joint width must be a minimum of 10 mm and a maximum of 35 mm. A width to depth ratio of 2:1 must be maintained (for exceptions, see table below).

Typical joint dimensions for joints between concrete elements:

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 rods

+5 °C to +40 °C

+5 °C to +40 °C, min. +3 °C above dew point temperature

* Sika Corporate Quality Procedure

Consumption depends on the roughness and absorbency of the substrate.

These figures are theoretical and do not allow for any additional material due to surface porosity, surface profile, variations in level or wastage etc.

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

Sikaflex® AT 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 and / or water 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, 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. 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).

Glass must be cleaned with Isopropanol before application

Porous substrates
Porous substrates must be primed using Sika® Primer-3 N applied by brush. For more details such as application and flash-off times, refer to the most recent Product Data Sheet of the respective pre-treatment product.

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.

For more detailed advice and instructions contact Sika Technical Services.

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.

1-part ready to use

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