Sikaflex®-11 FC

1-part polyurethane, moisture curing

Sikaflex®-11 FC has a shelf life of 12 months from the date of production, if it is stored in undamaged, original, sealed packaging, and if the storage conditions are met.

Sikaflex®-11 FC shall be stored in dry conditions, where it is protected from direct sunlight and at temperatures between +5 °C and +25 °C.

-40°C to +90°C

Resistant to fresh water, seawater, limewater, sewage effluent, diluted acids and caustic solutions; temporarily resistant to fuels, mineral oils, vegetable and animal fats and oils; not resistant to organic acids, alcohol, concentrated mineral acids and caustic solutions or solvents.

Min. width = 10 mm / max. width = 30 mm

The joint width must be designed to suit the movement capability of the sealant. In general the joint width must be ≥ 10mm.

Minimum joint width for perimeter joints around windows: 10mm.

All joints must be properly designed and dimensioned by the specifier and the main constractor 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.

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

+5ºC to +35ºC
 

+5ºC to +35ºC

Dry

4mm / 24 hrs approx.     (23ºC / 50% r.h.)

60 min approx.     (23ºC / 50% r.h.)

Substrate Quality

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

Substrate Preparation / Priming

Non porous substrates:

E.g. metals, powder coatings etc. have to be cleaned with a fine abrasive pad and Sika® Cleaner-205 by using a clean towel / cloth.

After a flash off time of at least 15 min, apply Sika® Primer-3 N by using a brush.

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, bricks, etc. have to be primed with Sika® Primer-3 N 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 be removed mechanically.