Beamshield Thermal Performance

Changes to Approved Document L (ADL) were implemented in October 2010. Houses designed to the previous regulations will require radical changes in order to meet the required carbon dioxide emission reductions. A minimum reduction of 25% in CO2 emissions is required for the whole building.

The limiting U-value for the ground floor is 0.25 W/m2K. However U-values as low as 0.07 W/m2K can be achieved with Beamshield Plus.

To ensure compliance, ‘as designed’ and ‘as built’ SAP calculations are required for new dwellings or SBEM calculations for buildings other than dwellings.

Health & Safety

The units are not designed for foot traffic and where access is required timber beams should be used. The product is chemically inert and requires no special treatment

Using Beamshield Plus in a suspended ground floor is an effective alternative to a Beam & Block construction. The system consists of:

  • Pre-stressed concrete T Beams
  • Beamshield Plus insulation units
  • Concrete screed or self-levelling/ self-compacting screed with mesh or polypropylene fibres

Thermal Conductivity: 0.030 W/m.K (Platinum) 0.038 W/m.K (White)

Full Half Starter End
Length (mm) 1200 1200 1200 1200
Panel Thickness (mm) 243-378 243-378 243-378 243-378
Panel Width (top face) (mm) 540 270 300 300
BEAMSHIELD PLUS U VALUES 175mm DEEP x 106mm WIDE BEAM
P/A243mm White243mm Platinum270mm White270mm Platinum298mm Platinum378mm Platinum
0.100.130.120.110.110.100.08
0.200.160.140.150.130.120.09
0.300.180.160.160.140.120.10
0.400.190.170.170.150.130.10
0.500.200.170.180.150.130.10
0.600.210.180.180.150.140.10
0.700.210.180.180.160.140.11
0.800.220.180.190.160.140.11
0.900.220.190.190.160.140.11
BEAMSHIELD PLUS U VALUES 175mm DEEP x 160mm WIDE BEAM
P/A243mm White243mm Platinum270mm White270mm Platinum298mm Platinum378mm Platinum
0.100.140.130.130.110.100.08
0.200.180.160.160.140.120.10
0.300.200.180.180.150.130.10
0.400.210.190.180.160.140.11
0.500.220.190.190.160.140.11
0.600.230.200.200.160.150.11
0.700.230.200.200.170.150.11
0.800.240.200.200.170.150.11
0.900.240.210.200.170.150.11
  • Values have been calculated at a ratio of 4 to 1 nominal 600mm centres and nominal 300mm centre beam spacings
  • Calculated to BS EN ISO 10211 & BS EN ISO 13370 and following conventions in BR 443
  • All U values are dependent upon beam spacings
  • Other units are available to suit differing beam widths
  • Other unit thicknesses are available to achieve U values in multiple half, double and triple beam layouts
  • Other unit thicknesses are available to achieve lower U values

The following calculation default parameters have been used:

Depth of underfloor space below ground: 300mm
Floor height above ground: 225mm
U value of walls above ground but below inside floor level: 1.5 W/m2K
Mean wind speed: 5.00 m/s
Wind shielding factor: 0.05
Ventilation openings per perimeter length: 0.0015 m2/m