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NBS Source
illbruck SP525 Frame And Façade Sealant And Adhesive


Primarily used as the standard paste adhesive for illbruck ME501 Duo HD window, door, curtain wall and linear joint sealing membrane. May also be used as a stand alone sealant in its own right for construction joints and glazing perimeters and other applications in facade construction.

Do not apply below +5°C and rising. Apply as a bead of adhesive and not as a contact adhesive. Not compatible with EPDM rubber, bitumen, MMA, PMMA substrates.


SP525 is a low modulus sealant and adhesive formulated using advanced SP Polymer technology. It has high movement capability, excellent primerless adhesion to many substrates and long-term performance.

SP525 is also used as sealant in its own right to form a primary weather in various facade construction joints.

Features and benefits:

  • Cured sealant provides a permanently flexible joint.
  • Does not contain solvents or isocyanates.
  • Excellent resistance to UV exposure, ageing and weathering, suitable for internal and external applications.
  • Low odour.
  • Non-sagging.
  • Meets requirements of EN ISO 11600 F 25LM.
  • Sound insulation up to 61 dB.

For Technical Data Sheets and Safety Data Sheets, please refer to the illbruck website Download Centre.

General information








Any product which has been applied (a) in accordance with Tremco CPG UK Ltd written instructions and (b) in any applications recommended by Tremco CPG UK Ltd, but which is proved to be defective, will be replaced free of charge.



Pr_30_31_76_16 Construction joint sealantsPrimary


L10/75 Sealant joints

L10/810 Sealant joints

L20/80 Sealant joints

L20/820 Sealant joints

Specification data - Construction joint sealants


To EN 15651-1.


Polymer hybrid sealant adhesive.


019 Anthracite.

053 Black.

077 Buff.

105 Concrete grey.

211 Light grey.

219 Light sandstone beige.

237 Medium grey.

278 Oyster white.

332 Sandstone beige.

402 White.

Fire performance

To BS EN 13501-1, Class E.


As an adhesive, always apply SP525 in the proportions stated in manufacturers' method statements and technical data sheets. As a sealant observe directions as per technical data sheet.



Approximately 3 mm/1st day (23°C, 50% RH).


To ISO 11600, 25%.


To DIN EN ISO 8339, approximately 0.7 N/mm².

Application temperature

+5 to +40°C.

Service temperature

-40 to +90°C.

Acoustic insulation

61 dB.

10 mm wide joint.

58 dB.

20 mm wide joint.

56 dB.

30 mm wide joint.


Consult manufacturer's literature for amount of product needed in relation to joint size.


Shelf life

12 months when stored a recommended in original unopened container.


AA956 600 ml Sausage Gun.

All applications.

Smoothing agent AA301.

When used as a sealant.

Smoothing tools AA311.

When used as a sealant.