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Application

Suitable for internal and external applications. It adheres well to a wide variety of substrates and is especially compatible with foamed polystyrene foams (XPS).

Description

Sikaflex®-508 is a low emission one-component isocyanate free sealant based on the Sika Silane Terminated Polymer (STP) technology. Sikaflex®-508 meets the most severe environment, health and safety standards and sets a new benchmark in this technology. The product cures on exposure to atmospheric humidity to form a durable elastomer. 


Features and benefits:

  • Very low emission.
  • Compatible with foamed polystyrene (XPS).
  • Bonds well to a wide variety of substrates without the need for special pre-treatments.
  • Easy to process.
  • Low odour.
  • Isocyanate, phthalate, plasticizer, solvent and PVC free.

General information

Color

Black

Material

Polymer

Shape

Formless

Uniclass

Pr_30_31_76_16 Construction joint sealantsPrimary

CAWS

M41/455 Sealant movement joints with metal edgings

L10/75 Sealant joints

M40/75 Sealant movement joints

H43/150 Profiled plastics sheet

H43/160 Profiled plastics sheet

H30/160 Profiled plastic sheet rooflights or wall lights

H31/240 Lining

H31/241 Lining

M40/815 Sealant movement joints

M40/805 Sealant movement joints with metal edgings

F30/76 Movement joints with sealant

L20/80 Sealant joints

H31/160 Profiled plastics sheet

H32/110 Plastics

H51/610 Sealant joints

H51/630 Movement joints

H11/777 Weathersealing for structural sealant/ bonded glazing

H11/772 Curtain walling joint assembly sealants

H13/740 Sealant joints

H30/246 Steel lining

H30/247 Steel lining

H30/234 Gutters

H31/110 Metal

H31/120 Metal

H31/234 Gutters

H32/120 Plastics

H41/655 Sealant jointing proprietary system

H43/234 Gutters

L10/810 Sealant joints

L20/820 Sealant joints

F11/116 Mortar jointed, sealant pointed glass block walling

F11/121 Sealant jointed glass block walling

F11/141 Sealant jointed glass block walling

F11/410 Perimeter/ Expansion joints with sealant

F30/610 Movement joints with sealant

H42/661 Sealant joints

Product range

Sealant

Specification data - Construction joint sealants

Material

Silane terminated polymer.

Colour

Black.

Manufacturer guidance

CQP001-1.

Cure

Moisture-curing.

Manufacturer guidance

Cure mechanism.

Cure speed

-

Manufacturer guidance

CQP049-1.

Consult manufacturer's literature for details.

Density

1.5 kg/L.

Manufacturer guidance

(Uncured).

SAG

Good.

Manufacturer guidance

Non-sag properties.

Application temperature

5–40°C.

Manufacturer guidance

(Ambient).

Shrinkage

1%.

Manufacturer guidance

CQP014-1.

Shore A hardness

35.

Manufacturer guidance

CQP023-1/ ISO 7619-1

TensileStrength

1.5 MPa.

Manufacturer guidance

CQP036-1/ ISO 527.

Elongation at break

250%.

Manufacturer guidance

CQP036-1/ ISO 527.

Tear resistance

4 N/mm.

Manufacturer guidance

Tear propagation resistance, CQP045-1/ ISO 34.

Service temperature

-50 to +80°C.

Manufacturer guidance

CQP513-1.

Shelf life

9 months (drum); 12 months (unipack).

Guidance for specification option:

Storage below 25°C.

Manufacturer guidance

CQP016-1.

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