Jetfloor Insulated ground floors

Our Jetfloor system, has been the market-leading solution for thermally insulated structural ground floors since its introduction in 1982. It brings together structural and thermal performance in one insulated ground floor solution. Quick and simple to install, Jetfloor’s flexible configuration design provides a future-proofed robust solution for housebuilders, specifiers and homeowners. Jetfloor was the UK’s first system to use expanded polystyrene blocks combined with a structural concrete topping to provide high levels of thermal insulation.

Jetfloor system overview - View

Jetfloor insulated ground floors - System overview

Typical layout

Jetfloor has been developed to offer simple and robust detailing. The main details are represented here, but for construction purposes please refer to site specific layout drawings by Bison Precast.

  1. 150mm or 225mm prestressed beam
  2. Thermalite spacer block
  3. EPS infill block
  4. Psi-Block
  5. Damp-proof course
  6. Structural grade overlay sheet min strength 130N/mm2
  7. Structural concrete topping
  8. Membrane if required
  9. Air vents
  10. Perimeter insulation (if required)

Jetfloor was the UK’s first system to use expanded polystyrene blocks combined with a structural concrete topping to provide high levels of thermal insulation.

Jetfloor technical details

TYPICAL LAYOUT

Jetfloor has been developed to offer simple and robust detailing. The main details are represented here, but for construction purposes please refer to site specific layout drawings by Bison Precast.

WIDE EPS BLOCKS

Section through Jetfloor where wide EPS infill blocks are used either side of a prestressed concrete beam. This relates to NJB1, NJR1 and NJT1 in the load span table.

NARROW EPS BLOCKS

Section through Jetfloor where wide and narrow EPS infill blocks are used either side of a prestressed concrete beam. This relates to NJB2, NJR2 and NJT2 in the load span table.

BISON_JETFLOOR_NARROW_EPS_BLOCKS

RUN-OUT 100MM SHEET

100mm thick EPS infill sheet is cut to suit the floor run out, and replaces a standard infill block up to a maximum width of 295mm. Shown here between a narrow block and a wide block but can be placed between any size of blocks.

BISON_JETFLOOR_RUN-OUT_100MM_SHEET

EDGE DETAIL PARALLEL TO SPAN

Showing edge section where the beams are parallel to the perimeter wall. The narrow EPS infill block is supported on the perimeter Thermalite Psi block and a prestressed concrete beam.

BISON_JETFLOOR_EDGE_DETAIL_PARALLEL_TO_SPAN

EDGE DETAIL PERPENDICULAR TO SPAN

Showing edge section where the beams are perpendicular to the perimeter wall. The prestressed concrete beams bear onto the wall and are set out by the use of the Thermalite spacing blocks. Also visible is the perimeter insulation around the edge of the concrete topping.

BISON_JETFLOOR_EDGE_DETAIL_PERPENDICULAR_TO_SPAN

LOAD SUPPORTED OFF FLOOR

Section through Jetfloor showing where a non-loading partition wall is located above two beams which are concreted together.

BISON_JETFLOOR_LOAD_SUPPORTED_OFF_FLOOR

STAGGERED BEARING

This shows the detail on the internal wall where the prestressed concrete beams are staggered on a single skin 100/140mm wide wall.

BISON_JETFLOOR_STAGGERED_BEARING

DESIGN BENEFITS

  • Flexible U-value performance
  • Improved Psi value due to unique Psi-Block®
  • Thermal mass
  • A+ Green Guide rating
  • Reduced dwelling emission rates

CONSTRUCTION BENEFITS

  • Reduced excavation and spoil removal
  • No waste
  • Increased speed of build
  • No specialist skills required
  • Available nationwide
  • Supply only or supply and install
  • Comprehensive in-house technical support

QUALITY BENEFITS

  • CE marked to BS EN 15037 and certified by the BBA since 1988 to latest relevant codes and standards
  • All precast concrete products and processes comply with all relevant standards and are manufactured in accordance with BS EN ISO 9001
  • Accredited to BS EN 14001 and BES 6001 responsible sourcing

SUITABLE APPLICATIONS

  • Residential
  • Standard housing
  • Retirement apartments – ground floors only
  • High-rise apartments – ground floors only