Product Data Sheet Show all documents

Sikaflex®-11 FC

One-part polyurethane adhesive sealant for building

Sikaflex®-11 FC is an one-part polyurethane high modulus flexible sealant/adhesive. It is suited for indoor and outdoor application.

  • One component, ready to use
  • Non-sag consistency, good application property
  • Very good adhesion to many construction materials
  • High tear strength
  • Can be over painted, can be sanded
Product Data Sheet Show all documents

Usage

Joints in the construction industry, particularly where a higher modulus and lower movement capacity are required for joints with low or medium movement
  • Connection joints between floor/stair and wall
  • Connection joints between floor and machinery (such as door, window etc..)
  • Seam sealing/sealing of pipe ducts/ventilation systems
  • Multipurpose in metal and wood construction work
 

Advantages

  • One component, ready to use
  • Non-sag consistency, good application property
  • Very good adhesion to many construction materials
  • High tear strength
  • Can be over painted, can be sanded

Packaging

600 ml foil pack, 20 foil packs per box

Colour

white, grey, black

Product Details

Product Information

Composition

1-part polyurethane, moisture curing

Shelf life

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.

Storage conditions

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.

Density

1.26 kg/l approx.
Technical Information

Shore A hardness

   

39 approx.     (23ºC / 50%r.h. after 28 days)

Movement capability

    

20HM

Elastic recovery

>70%   (23°C / 50 % r.h.)(DIN EN ISO 7389 B)

Service temperature

-40°C to +90°C

Chemical resistance

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.

Joint design

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

Design values

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.

Application

Application Information

Sag flow

0 mm, very good

    

Ambient air temperature

+5ºC to +35ºC
 

Substrate temperature

+5ºC to +35ºC

Substrate moisture content

Dry

Curing rate

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

Skinning time

60 min approx.     (23ºC / 50% r.h.)
Application steps

SUBSTRATE PREPARATION

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.

CLEANING OF EQUIPMENT

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

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