Sikaflex®-740 Construction

• Conforms with LEED v4 EQ credit: Low-emitting materials

• VOC Test Report, SCAQMD Rule 1168, LEED v4.1, Sikaflex-740 Construction, Eurofins, Report No. 392-2021-00292706_XG_EN

• VOC Emission Test CDPH, Sikaflex®-740 Construction, Eurofins, Report No.392-2021-00292703_H_EN

• Joint Classification, ASTM C920 , Class 35, Sikaflex®-740 Construction

• ASTM C920 - Type S, Grade NS, Movement Class 35, Use T1, NT, M

i-Cure® Technology polyurethane

12 months from date of production

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

The joint dimensions must be designed to suit the movement capability of the sealant. A width to depth ratio of 2:1 must be maintained. Joint widths less than 10 mm are generally for interior connection joints or crack control joints and therefore considered as non-movement joints.

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 adjacent building materials

• Joint sealing material

• The specific exposure of the building and the joints

CALCULATION GUIDELINE FOLLOWING ASTM C1472‐10 WITH A CLASS 35 SEALANT TO ASTM C920

For joint design and calculations contact Sika Technical Services for additional information.

Temperature must be a minimum of +3 °C above dew point temperature

Use closed cell, polyethylene foam backing rod or backing tape.

~3 mm/24 hours (23 °C / 50 % r.h.)

~60 minutes (23 °C / 50 % r.h.) 

~30 minutes (23 °C / 50 % r.h.) 

Note: Consumption data is theoretical and does not allow for any additional material due to surface porosity, surface profile, variations in level, wastage or any other variations. Apply product to a test area to calculate the exact consumption for the specific substrate conditions and proposed application equipment.

1-part ready to use

IMPORTANT

Strictly follow installation procedures

Strictly follow installation procedures as defined in Method Statements, application manuals and working instructions which must always be adjusted to the actual site conditions.

1. Apply masking tape where neat or exact joint lines are required. Remove the tape within the skinning time of the Product after finishing.
2. After the required substrate preparation, insert a backing rod to the required depth.
3. Prime the joint surfaces as recommended in substrate preparation. Avoid excessive application of primer to avoid causing puddles at the base of the joint.
4. The Product is supplied ready to use. Prepare the end of the foil pack or cartridge, insert into the sealant gun and fit the nozzle. Extrude the Product into the joint ensuring that it comes into full contact with the sides of the joint and avoiding any air entrapment.
5. IMPORTANT Do not use tooling products containing solvents. As soon as possible after application, tool the sealant firmly against the joint sides to ensure adequate adhesion and a smooth finish. Use a compatible tooling agent such as Sika® Tooling Agent N to smooth the joint surface.

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.