Silicone Sealants

Bostik 5CLM

Bostik 5CLM is a high joint movement Silicone sealant suitable for new construction work or remedial applications on façades work, including metal / aluminium composite panels.

Even on building that have high joint movement Bostik 5CLM places minimum stress on the adhesion bond, between the silicone and the substrate, in working joint application.


  • Excellent prime less adhesion too many building substrates*
  • Excellent elongation movement capabilities +100%/-50%
  • Excellent UV stability
  • The thixotropic nature of this product ensures that it will not slump in typical construction joints
  • Bostik 5CLM has excellent natural ageing stability
  • It will maintain its elastomeric joint sealant properties permanently, even under harsh conditions and temperature extremes

*Substrate test is always recommended first.

Recommended Uses

  • All types of building facades restoration and weatherproofing
  • Curtainwall joints
  • Marble & Granite joints**
  • Expansion and control joints
  • Precast panels
  • Concrete panels
  • Weatherseal / weatherproofing of coated metal & Aluminium composite panels
  • Anodized aluminium
  • Coated copper & brass plaques
  • Sealing of polycarbonate sheeting
  • Splashbacks
  • Expansion joints on pavers

**Stain testing must be carried out first before use on any project.