We replaced four windows in a Victorian house in Nunhead, South East London: the three sash windows in the front bay and one side window. The new windows are timber box sash windows on traditional cords and weights, made as replicas of the original windows to keep the character of the house, with double glazed units filled with argon gas for better thermal and acoustic performance.
The time-lapse below follows the whole job, filmed on 19–21 March 2018 by the same team that works under Bespoke Windows & Doors RG today.
What was installed
- 4 timber box sash windows (3 in the bay + 1 side window)
- Replica of the original Victorian design
- Traditional cords, pulleys and weights
- Double glazed units with argon gas
- Draught seals, sash locks and trickle vents
- Paint colour chosen by the customer
How the job was done
- Protecting the room, floor and furniture with dust sheets
- Careful removal of the old windows
- Installing the new box sash windows with pulleys, cords and weights
- Fitting sash locks and draught seals (weatherseals)
- Fitting architraves and sill nosing
- Internal and external repairs, pointing and sealant
- Redecoration in the colour chosen by the customer
- Snagging, cleaning and removal of all rubbish
What goes into our timber box sash windows
Multi-layer timber
Engineered timber sections with opposing grains even out moisture movement and resist warping and twisting. Available in pine, meranti (hardwood) or oak (hardwood).
Argon double glazing
4 mm clear glass, 16 mm argon-filled gap, 4 mm clear glass, glass U-value 1.0 W/m²K. Argon has about 34% lower thermal conductivity than air. Decorative, safety or acoustic glass available.
Pulleys and sash cord
Lacquered round sash pulleys with ball bearings (80 kg load), in polished chrome, satin nickel, satin chrome, brass, antique brass or white. Pre-stretched 6 or 8 mm nylon cord, or traditional waxed cotton.
Sash weights
Lead or steel weights counter-balance each sash so it stays at any height. Spring balances are available as an alternative.
Staff and parting beads
Primed timber staff and parting beads with brush seals keep the traditional look and stop draughts.
Weatherseals
Compressible seals that return to shape, for thermal and acoustic performance; unaffected by paint, rot or UV.
Run-through sash horns
Traditional horns on the top sash, as on original period windows.
Sash lifts and locks
Finger lifts on the bottom sash and spring-loaded cam sash locks with two keys, in chrome, satin nickel, satin chrome, brass or antique brass. Additional safety locks available.
Flush-fitting trickle vent
Discreet ventilation for condensation control, adjustable with a fingertip; white or brown.
Oak window sill
Sills made of oak (hardwood) for durability.
Spray-painted finish
Two coats of primer with anti-fungal protection, two undercoats and three coats of satin top coat. One RAL colour inside and out, or a different colour on each side.
Read more about our sash windows in South London, see close-up photos in Sash Window Details, or browse our project portfolio.
Want windows like these?
Book a free survey and we will measure, advise and give you a written quote.