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Residential Security Windows

KSDW have created a range of secure timber sash and casement windows, which are manufactured in the UK.

Although they look identical, they are far stronger and will resist attack for much longer than standard windows.

Security / Anti-bandit

Torterolo & Re High end Class 3 security rating

▸ ENV 1627

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Thermal Insulation

Excellent transmission of heat rating with a U-Value as low as 1.0 W/m² K
English Heritage Compliant

English Heritage

Compliant for listed buildings and houses in conservation areas

Manufactured on dedicated, state-of-the-art machinery, key features include:


  • Of engineered / solid Sapele Mahogany or Accoya with:
    • Acoustic insulation up to Rw 40dB
    • Patented operating system for sash windows to provide draught sealing and ensure true and reliable operation combined with traditional lead counterweights and pulley system
    • Weather proofing to BS6375-1
  • Glazing bars…. with options of:
    • Surface mounting on single panes, or
    • Solid glazing bars to accommodate individual glass panes

Security Glass

  • To LPS 1270.1.1.2……. with options of:
  • Single glazing (20mm) or
    • Double glazing (20mm external;14mm argon filled cavity; 4mm low e toughened internally)
    • Enhanced security to BR2, if required


  • Range of circa 40 finishes, all applied in dedicated state-of-the-art paint shop and factory finished
  • High grade hardware with 7 different options