Owning your own home

Price list from our window refurb below - costs stack (£4k for 5 sashes). We had another quote that was more all-in per sash and a bit less overall but they didn’t want to paint and I thought I could quite easily ruin the fitting and weather proofing by painting them myself, let alone the time required.
He’s been on it for the past month, not sure if he’s doing other work at the same time but I doubt it.

Draught Proofing the sash windows:
Draught proofing the window involves the removal of both top and bottom sash window and the removal of the exiting Staff & Part beading around the window and replacing it with Staff & Part beading that has a manmade fibre brush and flange that is routed into the rear of the beading. The fibre brush & flange draft proofing strip is not visible when in place and also has the benefit of stopping the sashes from rattling and allowing the sash to glide smoothly when opened or closed.
The estimated cost of draft proofing is £175 per window.

Refurbishment and decoration of sash windows:
(To be done in conjunction with Draft Proofing)
Refurbishing the sash widow will return the window to its former glory, we aim to have the window looking as best as we can to the way it looked when it was first installed.

• The sliding sashes are removed from the frames, any small sections of rot is removed and the area treated to prevent future decay.
• The timber is filled where necessary with wood filler, and the entire window is sanded to a smooth finish.
• The loose old glazing putty is removed and the windows are re-puttied with quality Linseed oil putty.
• The box frames and sills are filled where necessary with wood filler, and the entire frame and sill is sanded to a smooth finish.
• The pulley wheels are serviced and lubricated
• We remove any old frame sealant and re-seal the frame to the building using quality frame sealant to prevent any future water ingress. This is vital to get this right, particularly on an exposed elevation where the wind forces rain into any crack or hole.
• The sliding sashes are rehung and checked for correct balance.
• The sliding sashes and exterior boxframe is then Primed, Undercoated and painted with a minimum of 2 coats of Gloss. We use quality Dulux Trade Weathersheild Gloss.
Estimated cost per window: Upstairs windows £375 / Larger Ground floor windows £400

The following is the repair works required to the windows as follows:

Ground floor bay window:

Replace glass with air vent:
Estimated cost per pane: £110

Right window of bay:
Rotten lower sections of box frame:
• Both sides of lower box frames are rotten and require cutting out and replacing as follows:
• Cut out the lower section of the box frame.
• Treat the entire area to prevent future spread of rot.
• Construct new lower section of box frame to both sides and fit to existing frame.
• Paint the newly installed timber with undercoat and two coats of Dulux Gloss.
Estimated cost: £180

Replace rotten exterior sill:
• The sill is rotten and requires replacing as follows:
• Cut out entire sill and sub sill.
• Treat the entire area to prevent future rot.
• Supply wood materials and rebuild sub sill and install new sill.
• Paint the newly installed timber with undercoat and two coats of Dulux Gloss.
Estimated cost £200

First Floor.
Front bedroom
One of the lower sashes is very rotten and the other has several sections of rot that have been filled over and appear hard on the surface, however will continue to rot.
I would allow for replacing both.
New lower sash:
• Supply wood materials and construct new sash to an exact match to the existing sash.
• The window is painted with undercoat and two coats of Dulux Gloss.
Estimated cost per window: £275

Both these windows will require toughened safety glass to meet current building regulations.
Estimated cost per window: £130

Re-cording a sliding sash.
Estimated cost: £55 per sash.