Product Data Sheet Show all documents

SikaSwell® S-2

Polyurethane hydrophilic swellable sealant

SikaSwell® S-2 is a 1-part polyurethane hydrophilic sealant which swells in contact with water to seal all types of construction joints and penetrations in concrete.

  • 1-part, easy and fast to apply
  • Highly economical joint sealing solution compared to other systems
  • Versatile solution for joints and details
  • Optimised expansion rate, no damage to fresh concrete
  • Permanently water resistant (wet & dry cycles)
  • Good adhesion to various substrates
Product Data Sheet Show all documents

Usage

Joint sealing:
  • Construction joints
  • Pipe and steel work penetrations through walls and floor slabs
  • Around all types of penetrations and construction joints
  • Construction joints in cable ducts, etc.
Fixing / Adhering swellable profiles:
  • SikaSwell® A Profiles
  • SikaSwell® P Profiles
 

Advantages

  • 1-part, easy and fast to apply
  • Highly economical joint sealing solution compared to other systems
  • Versatile solution for joints and details
  • Optimised expansion rate, no damage to fresh concrete
  • Permanently water resistant (wet & dry cycles)
  • Good adhesion to various substrates

Packaging

300 ml cartridges

12 cartridges / box

600 ml unipacs

20 unipacs / box

Refer to current price list for packaging variations

Colour

Oxide red

Product Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

  • Water Pressure Resistance and Durability tests, SikaSwell® S-2, BBA, Test certificate No.13/4994
  • Water Tightness SikaSwell® S-2, Vattenfall, Test report No. 1278-10
  • Sealing test Building Rules List A, SikaSwell® S-2, WISSBAU, Test report No. 2017-313
     
Product Information

Composition

1-part polyurethane, moisture curing

Shelf life

9 months from the date of production

Storage conditions

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.

Density

1,24 kg/l (at +23 °C)

(ISO 2811)

 
Technical Information

Shore A hardness

Non-swollen (7 days / +23 °C / 50 % r.h.)

30–50

Change of volume

1 day in tap water

< 25 %

7 days in tap water

< 100 %

Swelling properties in salty water will be reduced and delayed.

Application

Application Information

Sag flow

< 2 mm (+23 °C / 50 % r.h.)(ISO 7390)

Substrate moisture content

Dry or matt damp

Curing rate

1 day (+23 °C / 50 % r.h.)

~2,0 mm

10 days (+23 °C / 50 % r.h.)

~10,0 mm

Skinning time

60 minutes (+23 °C / 50 % r.h.)

(EN 15651)

Place SikaSwell® profiles onto SikaSwell® S-2 within a maximum of 30 minutes.

Ambient air temperature

+5 °C min. / +35 °C max.

Substrate temperature

+5 °C min. / +35 °C max.
Consumption

Consumption

Size of triangular section

300 ml cartridges

600 ml unipacs

12 mm   4,1 m 8,2 m

15 mm

3,1 m

6,2 m

20 mm

1,8 m

3,6 m

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.
Application steps

SUBSTRATE QUALITY

The substrate must be sound, clean, dry or matt damp and free from all surface contaminants that could affect adhesion of the sealant.

SUBSTRATE PREPARATION

Existing Concrete

All loose particles, release agents, laitance, paint, rust and other poorly adhering materials must be removed by hand or mechanical preparation.
 

Freshly cast concrete

Surfaces which are excessively rough can be susceptible to leaking. It is recommended to smoothen the freshly cast concrete with a batten where the sealant is to be placed.

CLEANING OF EQUIPMENT

Clean all tools and application equipment immediately after use with Sika® Colma-Cleaner. Hardened material can only be removed mechanically.

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