Product Data Sheet Show all documents

Sikaflex® + Construction Sealant

One-component, all purpose, non-sag polyurethane sealant

Sikaflex® + Construction Sealant is a moisture-cured, 1-component, polyurethane-based, non-sag elastomeric sealant.

  • High elasticity – cures to a tough, durable, flexible consistency with exceptional cut and tear resistance
  • Stress relaxation
  • Can be applied to green/new concrete 24 hours after cure
  • Can be applied on concrete that has been wet 1 hour after water source has stopped
  • Excellent adhesion – bonds to most construction materials without a primer
  • Excellent resistance to aging, weathering
  • Non-staining
  • Urethane-based; suggested by EPA for radon reduction
  • Paintable with water, oil and rubber-based paints
  • Capable of ±35 % joint movement
Product Data Sheet Show all documents

Usage

  • Designed for all types of joints where maximum depth of sealant will not exceed 1/2”.
  • Suitable for vertical or horizontal joints.
  • Has many applications as an elastic sealant between materials with dissimilar coefficients of expansion.
  • Available in 6 colors (Limestone, White, Capitol Tan, Dark Bronze, Aluminum Gray, Black)
Ideal for:
  • Weatherproofing of joints between brickwork, blockwork, masonry, wood, and concrete or metal frames
  • Sealing joints in walls, floors, balconies, around window or door frames
  • Sealing expansion joints
 

Advantages

  • High elasticity – cures to a tough, durable, flexible consistency with exceptional cut and tear resistance
  • Stress relaxation
  • Can be applied to green/new concrete 24 hours after cure
  • Can be applied on concrete that has been wet 1 hour after water source has stopped
  • Excellent adhesion – bonds to most construction materials without a primer
  • Excellent resistance to aging, weathering
  • Non-staining
  • Urethane-based; suggested by EPA for radon reduction
  • Paintable with water, oil and rubber-based paints
  • Capable of ±35 % joint movement

Packaging

10.1 fl. oz. (299 ml), moisture-proof composite cartridges, 12/case

Color

White, Limestone, Capitol Tan, Dark Bronze, Aluminum Gray, Black

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

  • ASTM C 920, Type S, Grade NS, Class 35, use NT, T, O, M, G
  • Federal specification TT-S-00230C Type II, Class A
  • Canadian Standard CANICGSB 19.13-M87

  

Environmental:

  • LEED® EQc 4.1 SCAQMD
  • Rule 1168
  • BAAQMD, Reg. 8, Rule 51
 
Product Information

Chemical Base

Polyurethane

Shelf Life

12 months in original, unopened containers

Storage Conditions

Store at 40 to 95 °F (4 to 35 °C). Condition material to 65 to 75 °F (18 to 24 °C) before using
Technical Information

Shore A Hardness

45±5 (21 days)

(ASTM C-661)

Tested at:

73 °F (23 °C)

50 % R.H.

Tensile stress at specified elongation

Curing time

Tension

21 days

25 %35 psi (0.24 MPa)
21 days50 %60 psi (0.41 MPa)
21 days100 %85 psi (0.59 MPa)

Movement Capability

+/- 35 %

(ASTM C-719)

Adhesion in peel

SubstratePeel StrengthAdhesion Loss
Concrete
Aluminum
Glass

20 lb. (9 kg)

20 lb. (9 kg)

20 lb. (9 kg)

0 %

0 %

0 %

Tear Strength

55 lb./in.

(ASTM D-624)

Service Temperature

-40 to 170 °F (-40 to 77 °C)

Chemical Resistance

Good resistance to water, diluted acids, and diluted alkalines

Resistance to Weathering

Excellent

 

Application

Application Information

Ambient Air Temperature

40 to 100 °F (4 to 38 °C). Sealant should be installed when joint is at midrange of its anticipated movement.

Substrate Temperature

40 to 100 °F (4 to 38 °C). Sealant should be installed when joint is at midrange of its anticipated movement.

Cure Time

Final cure: 5–7 days (depending on temperature and humidity)

Tack Free Time

3–6 hrs (depending on temperature and humidity) 
Consumption

Coverage

10.1 oz (299 ml) Cartridge: Yield in Linear Feet

Depth 1/4"

Depth 3/8"

Depth 1/2"

Width

1/4"24.3

3/8"

16.210.8
1/2"12.18.16.1
3/4"8.15.44.0
1"3.0
Application steps

SUBSTRATE PREPARATION

Clean all surfaces. Joint walls must be sound, clean, dry, frost-free, and free of oil and grease and any other contaminants. Install bond breaker tape or backer rod to prevent bond at base of joint.

  

Priming

Priming is not usually necessary. Most substrates only require priming if testing indicates a need. Consult Sikaflex® Primer Product Data Sheet or Technical Service for additional information on priming.

CLEANING OF TOOLS

Uncured material can be removed with approved solvent. Cured material can only be removed mechanically. For spillage, collect, absorb, and dispose of in accordance with current, applicable local, state, and federal regulations.

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