Choosing the right sealant for the task

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Many adhesives may look and feel similar, however not all are up to the task. To help you get the job done, it’s important to know which technology and type is best suited to the project.

Polyurethane sealants (PUs) have been around forever. They are a well proven, hard wearing and cost-effective solution for any project and are mostly used in industrial and commercial situations.

Advantages of Polyurethane sealants

  • Excellent adhesion
  • Weather and UV resistant
  • Chemical resistance to salt water, grease, oils, fuels, detergents, mildew, weak acids and alkalis
  • More flexible than hybrid polymer sealants and silicone
  • Excellent tear and abrasion resistance
  • Paintable

H.B. Fuller PU sealant range

  • FulaFlex 550LM is a highly flexible, low modulus, fast skinning, Class A sealant with excellent joint movement capabilities
  • FulaFlex 570FC is a high modulus fast-curing adhesive/sealant that is pick and abrasion resistant

FulaFlex products are available in grey, white, black 310mL cartridges and 600mL sausages (FF570FC sausage is available in grey only).

FulaFlex 550LM is great for:

  • Building joints with high movement requirements in brickwork, masonry and blockwork
  • Expansion joints
  • Joints in pre-cast and tilt-up concrete elements
  • Perimeter fillets in waterproofing systems as a bond breaker – edge seal between floor and wall
  • Sealing roofing and gutter joints

FulaFlex 570FC is ideal for:

  • Sealing trafficable floor joints in concrete floors – both vehicle and foot
  • Floor joints including saw cuts
  • Pick resistant seals in public spaces
  • Bonding and sealing fibre-cement panels/cladding
  • Sealing pipe and duct penetrations in walls and floors
  • Joints around windows, door frames and walls

Why choose FulaFlex over other brands?

  • Ideal balance between flexibility, hardness and curing rate
  • Faster skin time: FulaFlex 550LM skins in 40 mins – up to nine times faster than other brands
  • Faster cure time: both FulaFlex 550LM and 570FC cure 25%-30% faster than other leading brands

FulaFlex is approved for use with James Hardie cladding, lining, facade and underlay systems when used as directed by the manufacturer’s technical data sheet.

For more information about HB Fuller’s range of sealants and adhesives, speak to your Account Manager or local store.