Radial TB51 (Thermally Broken)

Our Radial TB51 window system is thermally broken and provides a strong and high performance window in a fixed, opening or top hung configuration. Our windows can be manufactured into various shapes and sizes including curved-on-plan. All our windows are made to customer specification.


  • Manufactured from aluminium alloy 6063 extrusions with a minimum wall thickness of 2.5mm
  • Our Radial TB51 sections are thermally broken using 2 x 22mm wide polyamide strips
  • Circular and shaped window frames are internally beaded for security purposes
  • Sections are polyester finished to any standard RAL colour
  • Dual colour option available on request
  • Windows are double neoprene sealed
  • Double glazed units are sealed into the window frames using Hodsons Sealant Pre-shimmed mastic tape to the outside and a 4.6mm Reddicord Glazing Wedge to the inside
  • Glazing is positioned with setting blocks and spacers and then sealed in position using standard EPDM rubber glazing gaskets, wedges or silicon sealents
  • All fittings are silver finish as standard but colours are available if required (at an extra cost)
  • Standard fittings for opening windows include an adjustable friction hinge with a built in 15 degree restrictor stay and reverse catch
  • All double glazed units are drained to the outside
  • All joints are TIG welded and dressed flush for strength and aesthetics

Section Details

We use extruded 6063 aluminium alloy sections heat treated to T4 temper, which comply with the BS1474 standard.