Service
Hot Applied Joint Sealing
Shepherd and Sons Contracting LTD
Hot Applied Joint Sealing
Hot applied joint sealing involves sealants which are bitumen-based compounds applied molten via a boiler. The key differentiator between products is their specification and structural characteristics — knowing which product goes where separates a knowledgeable contractor from the rest. This is where Shepherd & Sons’ expertise shows.
N1
N1 — Surface Joint Sealant N1 is a polymer-modified bituminous surface-applied hot-pour sealant, slightly more rigid in its characteristics. Used for road and runway surface joints in concrete and asphalt, resistant to de-icing agents and extreme temperature fluctuations.
Applications: Highways, motorways (including M20), airfield surface joints. Specification: N1 hot applied joint sealant.
N2
N2 — Flexible Surface Joint Sealant N2 is very similar to N1 but slightly more flexible, making it better suited to asphalt surfaces where expansion and contraction movement occurs. Some engineers specify N2 over N1 for joints in areas with greater thermal movement.
Applications: Asphalt surfaces, areas with thermal expansion/contraction requirements. Specification: N2 hot-applied joint sealant
9525
9525 — Structural / Sub-Surface Sealant 9525 is a fundamentally different product to N1 and N2. It is not a surface sealant — it is designed to go below the surface or between asphalt layers. Stronger and more rigid than N1/N2, essentially pure bitumen. Its primary application is sealing cable chases in the subbase for airfield ground lighting (AGL) cables that are laid below the asphalt surface as the runway is constructed.
Shepherd and Sons Contracting LTD
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For fast, safe, and cost-effective solutions, contact us today to learn more about how we can assist you.
Shepherd and Sons Contracting LTD
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