Clean Slate Fit
Old frame out, opening inspected, new window sealed and certified, done properly from the start.
What Goes Wrong
Fitting into a failing frame leaves rot in the sill and corners, where it continues to spread into the surrounding structure.
Stripping to the bare opening lets the installer check rot spread, damp ingress and lintel movement before the new frame is ordered.
A frame seated on a deteriorated sill cannot achieve a consistent perimeter seal, so draughts and water ingress continue after the new window is in.
The new frame is shimmed level, fixed to sound structure, and sealed to BS 6375 weathertightness requirements around the full perimeter.
Early-generation uPVC frames from the 1980s and 1990s were not built to current Part L thermal standards, so the glazing unit alone cannot close the gap.
A new frame paired with energy-rated glazing units meets Part L thermal performance criteria in a way the old frame assembly never could.
Work carried out without FENSA self-certification creates a gap in the property’s compliance history that surfaces at sale or remortgage.
The installer handles FENSA registration on completion, so the compliance paperwork is in order and transferable to a future buyer.
Scope of Work
From a single problem window to a whole-house programme, the scope is the same: frame out, opening checked, new window in.
Early-generation uPVC frames are stripped out, the opening is inspected, and a new uPVC frame is fitted and sealed to current weathertightness standards.
Rotten or warped timber frames are fully removed, the sill and surround are checked for damp spread, and a new timber or uPVC frame is installed.
Where a slimmer sightline or a period-appropriate look is needed, aluminium frames are fitted into the prepared opening with energy-rated glazing units.
Multiple windows are scheduled across the property to keep open openings to a minimum at any one time, reducing disruption throughout the job.
Sash, trim and internal finishing are fitted as part of the installation, leaving the opening complete and ready without a separate making-good visit.
Opening checked for rot spread and damp before the new frame is ordered.
Included where Approved Document F requires ventilation.
Old frames and glazing removed and disposed of as part of the job.
Clean Slate Installation
The extra disruption of a full-frame installation is justified when the opening itself needs attention before a new window can perform correctly.
Inter-war and post-war housing across Havering frequently presents with original timber frames showing rot at the sill and corners, or early-generation uPVC frames from the 1980s and 1990s that have reached end of life. In both cases, fitting a new window into the existing frame would leave the deterioration in place. Full frame removal exposes the opening so the installer can check for damp, rot spread into the surrounding structure, and any movement in the lintel or sill before the new frame is ordered.
Once the opening is prepared, the new frame, uPVC, timber, or aluminium, is set in, shimmed level and square, and fixed to the structural surround. Sash and trim are fitted, and the full perimeter is sealed and weatherproofed to BS 6375 weathertightness requirements. Energy-rated glazing units are installed as standard, meeting Part L thermal performance criteria. Trickle vents are included where Approved Document F requires them.
The written quote covers frame removal, opening inspection and any remedial work, new frame supply, glazing units, labour, and waste removal, each as a separate line item. Whole-house installations across multiple windows are scheduled to keep the number of open openings at any one time to a minimum, reducing disruption. FENSA self-certification is handled by the installer, so the compliance paperwork is in order on completion.
Why Choose Us
The assurances that matter when the old frame is coming out and the opening is exposed.
A local installer visits the property to record frame condition and glazing before a figure is given, no guesswork pricing.
Frame removal, opening work, new frame, glazing, labour and waste removal each appear as separate lines so you see exactly what you are paying for.
The quote states whether a pocket insert or full-frame removal suits each opening, so you can make an informed decision before committing.
Whole-house jobs are planned to keep the number of open openings at any one time to a minimum throughout the installation.
The installer handles FENSA self-certification on completion, so the compliance record is ready for your property file without a separate application.
The on-site survey and written quote are both free, with no obligation to proceed and nothing to pay before work starts.
How It Works
01
Tell us the property type and the windows you are concerned about, and we arrange a local installer to visit and record the frame condition.
02
You receive a written, itemised quote covering removal, opening work, new frame, glazing, labour and waste, before anything is ordered or started.
03
The installer fits the new frames, seals the perimeter, and handles FENSA self-certification so the compliance paperwork is complete on the day.
Pricing Estimates
| Job | Typical cost | Typical duration |
|---|---|---|
| Full-frame replacement for one window | £550-£1,500 | Half day |
| Full-frame replacement for larger window | £900-£2,000 | Half day to 1 day |
| Full-frame bay window replacement | £1,490-£3,730 | 1 day |
| Full-house full-frame replacement | £5,000-£14,000 | 1-3 days |
Tell us the symptoms and the property type. We arrange a local installer to survey the windows and return a written quote before anything is ordered.