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Premium Natural Stone Silicone Matt

FA880 is a one component, low slump silicone completely free of any ingredients likely to cause migratory staining to natural stone. It is neutral curing for safe sealing of stonework and has a matt finish. Contains fungicide. FA880 is classified according to EN15651 for use in cold climates. Please see table below for further classifications.


For Interior and Exterior Use

FA880 has been formulated for the long term elastic sealing of movement joints between natural stone such as granite, slate, terrazzo, porphyry, limestone, travertine, sandstone, quartzite, marble, etc., as well as for joints with other construction materials like concrete, ceramics, metals, glass, PVC and primed wood.

Has been tested to BS 8449 Method A for movement accommodation factor. Achieves 50% MAF.


  • Guaranteed no migratory staining into natural stone
  • 50% movement accommodation factor
  • Superb matt finish
  • Good resistance to UV light, ageing and weathering
  • Contains fungicide to prevent mould growth - suitable for sanitary & swimming pool surround applications
  • Rapid curing formulation - skins within 10 - 20 minutes
  • Chemically neutral and very low odour
  • Compatible with most construction materials

Usage Guidelines

  • Use a high quality geared sealant gun to expel the sealant consistently. Cut cartridge nozzle to desired aperture.
  • Apply sealant slightly proud of desired level, spray on illbruck smoothing agent AA301.
  • Tool off immediately using a jointing tool such as illbruck AA311. 
  • Note: avoid making too many passes with the smoothing tool to avoid polishing the matt finish.


310 ml cartridge (12 per carton)

Technical data

ClassificationEN 15651 part 1F-EXT-INT-CC
EN 15651 part 3XS1
EN 15651 part 4PW-EXT-INT-CC 12.5E
StainingDIN ISO 16938No migratory staining
DensityDIN 52451-A~ 1.3 g/cm3
Skin Formation+23°C, 50% RH~ 15 minutes
Curing Rate+23°C, 50% RH~ 3 mm in 1st day
ShrinkageBS EN 10563~ 6%
Modulus at 100% ElongationBS EN 8339
Method A
 ~ 0.6 N/mm²
Tensile StrengthBS EN 8339
Method A
~ 0.8 N/mm²
Elastic RecoveryBS EN 7389
Method A
~ > 90%
Movement Accommodation FactorBS 8449 Method A50%
Movement CapabilityISO 1160020%
Shore A HardnessBS EN 868~ 35
Application Temperature +5°C to +40°C
Service Temperature -40°C up to +150°C (Short Term)
Storage Store in shaded dry conditions between +5°C and +25°C
Shelf Life 18 months when stored as recommended in original unopened containers
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