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London Sash Window Specialist. Double Glazed Castellated Sash.

Castellated Bay Window, Harrow, London

Sash Windows Berkshire London & South

Double Glazed Sash Windows & Bay Window Restoration By London Sash Window Specialist

London Borough of Harrow.

Harrow sash windows being repaired & upgraded by Sash Window Specialist London.   

Initially we renovated a pair of french doors for the owners of this Edwardian period property in Harrow, NW London. They had previously spent thousands of pounds with one of our competitors, who undertook work on the bay windows. A sub-sill had been planted onto the rotten window sills & sloppy draught proofing work had been completed.  The owners were not happy with the poor quality of workmanship.

Liam at Sash Window Specialist London & Berkshire listened & understood what they wanted to achieve. 

Window restoration work included: 

  • Extensive splicing & epoxy resin repairs
  • New 3 part Sapele hardwood sill
  • Double glazed replica sashes
  • Sash Window Draught proofing
  • Joinery Made In Britain
  • AccoyaWood (50 Year Warranty)

Bay Sash Window Restoration

First the rotten timber bay windows had to be structurally repaired.  The previous sash window company had fitted sub-sills to what were actually rotten window sills.  These window sills and sub-sills had to be replaced along with much of the vertical window stiles.  Durable Accoya wood, bonded with epoxy glue, was used to splice repair the stiles.  By selecting these products we ensure the repair work will last.


Double Glazed Timber Sash Windows

Whilst other companies could only offer to replace their original windows with a simplified glazing style, Liam has the skills to replicate this difficult Edwardian ‘Castellated’ sash window glazing pattern.

The replacement double glazed sliding sash frames were made at our sash window workshop in Reading, Berkshire.  Factory fitted with Low E double glazing units, filled with Argon gas for greatly improved energy efficiency.

London Sash Window Specialist

Contact Liam today for a friendly chat about your sash window & door renovation or repair requirements.

Mob :  07799 023326

Workshop: 01189 699407

Harrow NW London

‘Harrow’s heritage can be traced back to Roman times, later becoming an ancient parish, manor owned by the Archbishop of Canterbury and a market town, before transforming in to a commuter hub in Victorian times. Historic vestiges have become attractive landmarks, notably Grim’s Dyke – a Victorian manor house built with Elizabethan and Gothic influences; Headstone Manor – owned for six days by Henry VIII, and the buildings that comprise Harrow School, dating back as far as 1572. As well as being home to the prestigious boys’ boarding facility, Harrow-on-the-Hill conservation area provides a master class in Georgian architecture.’

Harrow: where heritage highlights meet a fresh future

Period Window Restoration