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SP525
Frame and Façade Sealant & Adhesive

SP525 is a low modulus sealant with high movement capability, excellent primerless adhesion to many substrates and long-term performance. It is also used for the bonding of ME500 & ME501 Intelligent Window Membranes.

Usage/Purpose

SP525 is ideal for sealing joints in façades, rainscreens and curtain walls, perimeter joints around windows, doors and rooflights, and high movement joints  (e.g. modular building). It is also used for the bonding of ME500 & ME501 Intelligent Window Membranes. SP525 will enhance the acoustic performance of a joint, providing up to 61 dB sound reduction.

  • Meets the requirements of EN ISO 11600 F 25LM
  • Formulation based on advanced SP polymer technology
  • High movement, rapid curing and extremely low risk of staining*
  • Excellent long-term resistance to weathering, ageing and UV
  • Low modulus formulation ensures minimum stress at joint faces
  • High strength bonding of ME500 & ME501 Intelligent Window Membranes
  • Weather and airtight sealing of ME500 & ME501 Intelligent Window Membranes
  • Provides up to 61 dB sound reduction in a 10 mm wide joint

Technical data

Property Test Method Results 
Composition  Advanced SP polymer formulation 
CategoryEN 15651 part 1Type F-EXT-INT-CC, class 25LM
Fire ClassificationEN13501-1Class E
Specific Gravity DIN 52451-A1.6
Consistency EN 27390, 20 mm profile Non-sagging
Shore A Hardness DIN 5350525
Skin Forming Time at +23°C, 50% RH ~ 30 minutes 
Cure Rate at +23°C, 50% RH ~ 3 mm /first day 
Tensile Strength DIN EN ISO 8339 Method A~ 0.7 N/mm²
Modulus at 100% Elongation DIN EN ISO 8339 Method B 0.4 N/mm²
Elongation at Break DIN 53504 S2  ~ 550% 
Maximum Movement CapacityISO 11600~ 25%
Elastic Recovery BS EN ISO 7389 method A ~ 74%
Acoustic Insulation 

61 dB in a 10 mm wide joint
58 dB in a 20 mm wide joint
56 dB in a 30 mm wide joint

Application Temperature  +5°C to +40°C 
Service Temperature -40°C to +90°C 
Storage  Store in dry conditions between +5°C and +25°C
Shelf Life  12 months when stored as recommended in original unopened containers
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