Replacement Double Glazing Quotes in Sittingbourne
Much of the glazing on Sittingbourne homes dates from the first big wave of uPVC in the 1980s and 1990s, and many of those sealed units have now given up. From a single misted unit to a whole house of old frames, the right answer depends on what has failed.
Send a quick description of the glazing and Kent Windows will pass your enquiry to independent installers covering Sittingbourne, Kent. If suitable firms have space in their diaries, as many as four could offer a survey and quote. There is no charge and no obligation.
Units, Hardware or Full Replacement
A fogged pane in a sound frame can usually be fixed by swapping just the glass unit. Once the glazing beads are unclipped, the fogged unit is lifted out and a made-to-measure replacement set in its place, usually within an hour or so once the unit has been made.
Where frames have yellowed, the corners have cracked or several openers have dropped, full replacement often makes more sense. Replacing everything at once means a consistent look and specification throughout the house.
Signs Your Double Glazing Has Failed
- Moisture or white staining inside the sealed unit
- Gaskets that have shrunk or perished, letting rain behind the glass
- Frames that have yellowed or cracked at the welded corners
- Openers that drag on the frame or will not lock
- Cold spots near large panes of early, uncoated glass
Mention which windows are fogged and which are simply old, so the survey can separate the two.
Ask the surveyor to distinguish a failed glass seal from condensation on the room side. If only the sealed unit has failed, a fitter can measure the glass thickness and spacer before ordering a replacement, while retaining a sound frame and working hardware.
What to Expect
- First visit: each window is checked to confirm whether the unit, the hardware or the whole frame needs replacing.
- Quote: glass type, frame colour and opening layout are agreed in writing.
- Ordering: sealed units usually take one to two weeks; complete windows take several weeks.
- On the day: units are swapped or old frames removed and new windows fixed, sealed and trimmed.
- Handover: every opener is tested and, for full replacements, the job is registered for a certificate.
Full window replacement disturbs the plaster around each opening, so ask what making good includes. Ask how many windows will be done each day and whether every room will be secure overnight.
Specification Points for Your Sittingbourne Home
Ask each firm what coating, gas fill and spacer bar the new units will have. For full replacements, get a whole-window energy rating rather than a figure for the glass alone, and check that bathroom and low-level panes will have the right obscure or safety glass.
Ask whether disposal, new cills and new window boards are in the price. If you are near a busy road or railway, ask for acoustic laminated glass to be priced as an option, and confirm how trickle vents will keep rooms ventilated once the draughts have gone.
Double Glazing Replacement Prices in Sittingbourne
The guide range for double glazing replacement is £150–£10,500. The lower end reflects one misted unit swapped in a sound frame, while renewing every window in a typical house sits toward the top. Large houses and bespoke frames can exceed the range, so treat it as a starting budget.
Make sure each quote says whether it includes VAT, disposal, cills and boards, making good and any scaffolding for upper floors.
What Needs Approval?
Like-for-like replacement windows on a house are usually permitted development. Listed buildings, flats and streets covered by an Article 4 direction are the main exceptions, and changing material or style there may need consent. Check the position for your address with Swale Borough Council.
Replacing only the sealed unit is a repair and does not need Building Regulations sign-off. Replacing the whole window does, and an installer registered with a competent person scheme can self-certify it; see the government's competent person scheme guidance.
Nearby Areas We Cover
Our network includes firms serving: Queenborough, Rainham, Minster-on-Sea, Sheerness, Faversham, Harrietsham. Give your full postcode so firms can confirm they cover you.
Request Free Quotes
Describe the glazing problems you have noticed. Kent Windows introduces enquiries and does not fit windows itself. Firms joining the network are asked for insurance details and references, but please check their credentials and recent work before choosing.
Request free double glazing quotes.
Use these answers when talking to installers about your Sittingbourne home.
Your Double Glazing Questions Answered
How much does double glazing replacement cost in Sittingbourne?
The guide range is £150–£10,500, from one replacement sealed unit to renewing every window in a typical house. Coloured frames, large houses and specialist glass can push the cost higher.
Can misted double glazing be fixed without new frames?
Usually. If the frame and hinges are sound, a new sealed unit can be made to size and fitted into the existing frame, which is far cheaper than a new window.
Do I need a certificate for replacement windows in Sittingbourne?
For a whole new window, yes. A competent person scheme installer can register the job and issue a certificate. Replacing only the glass unit is a repair and does not need one.
How long does it take to replace double glazing?
A sealed unit can be swapped in about an hour. Replacing every window in a typical house usually takes one to three days once the frames have been made.