Sikaflex® Construction

ISO 11600 (Type F Class 25HM / 20LM)

1-part polyurethane, moisture curing

12 months from date of production if stored in undamaged original sealed containers.

Sikaflex® Construction shall be stored in dry conditions, where it is protected from direct sunlight and at temperatures between +5 °C and +25 °C.

1.30 kg/l approx.

−40 °C to +70 °C

The joint width must be designed to suit the joint movement required and 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 (for exceptions, see table below).

Standard joint widths for joints between concrete elements as per DIN 18540 / Table 3:

Minimum joint width for perimeter joints around windows: 10 mm

All joints must be properly designed and dimensioned by the specifier and the main contractor in accordance with the relevant standards, because changes are not usually feasible after construction. The basis for calculation of the necessary joint width are the technical values of the joint sealant and the adjacent building materials, plus the exposure of the building, its method of construction and its dimensions.

Approximate consumption

Backing: Use only closed cell, polyethylene foam backing rods.

Use only closed cell, polyethylene foam backing rods.

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

+5 °C to +40 °C

Dry

Approximate consumption

Clean and dry, homogeneous, free from oils and grease, dust and loose or friable particles. Cement laitance must be removed.

Non porous substrates: E.g. metals, powder coatings, etc. have to be cleaned with a fine abrasive pad and Sika® Aktivator-205 by using a clean towel / cloth. After a flash off time of at least 15 min, apply Sika® Primer-3N by using a brush. Before sealing allow a flash off time of at least 30 min. (max. 8 hrs.). For PVC use Sika® Primer-215. Before sealing allow a flash off time of at least 30 min. (max. 8 hrs.).

Porous substrates: E.g concrete, aerated concrete and cementitious renders, mortars, brick, etc. have to be primed with Sika® Primer-3N by using a brush. Before sealing allow a flash off time of at least 30 min. (max. 8 hrs.).

Important note: Primers are only adhesion promoters. They neither substitute for the correct cleaning of the surface nor improve their strength significantly.

Primers improve long term performance of a sealed joint.

For further information refer to the Sika® Primer Table.

Clean all tools and application equipment with Sika® Remover-208 / Sika® TopClean T immediately after use. Hardened / cured material can only be mechanically removed.