Arrange complete window replacement across Cardiff
If your frames are worn out as well as the glass, complete replacement lets you address both together. Unlike a glass-only repair, this work changes the frame, opening lights and glazing as a complete installation.
Start with a free description of the work needed at your property in Cardiff. Up to four independent window installers may respond, depending on the job and availability. There is no obligation to accept a quote.
Give the full postcode so firms can assess the journey to your part of Cardiff.
Problems worth showing a specialist
Tell the specialist what you have noticed rather than trying to diagnose it yourself.
- Rotten timber rails, failed frame joints or cracked profiles that cannot be economically repaired.
- Persistent draughts after sensible hinge, gasket and locking adjustments have been considered.
- Single glazing or poorly performing older windows, with a wish to improve comfort.
- Opening styles that no longer meet household needs, subject to ventilation and escape requirements.
Check the specification before ordering
uPVC, thermally broken aluminium and engineered timber have different costs and maintenance needs. Ask for the whole-window U-value or energy rating. Low-E coatings, gas fill and warm-edge spacers are useful specification details, but the frame and fitting also matter. For road noise, request acoustic performance figures for the proposed system rather than assuming triple glazing is automatically quieter.
From survey to completion
- Survey every opening, including bay angles, frame support, cills and the condition of lintels and reveals.
- Record the product specification for each room, including safety glass and any required escape opening.
- Protect floors and furniture, arrange safe access and remove the old glazing and frames in a planned sequence.
- Install the new windows square and level using the system requirements, then check locks and weather seals.
- Complete agreed reveal repairs, collect old frames and demonstrate handles, restrictors and vents.
What affects the price across Cardiff
The indicative UK range for double glazed window replacement is £550–£12,000. The lower figure relates to one straightforward window; a multi-window order takes the budget much further. Bays, timber or aluminium frames, coloured finishes, structural repairs and difficult access can raise the total beyond it.
These figures are a budgeting guide, not a measured local average for Cardiff. Confirm VAT where applicable, travel, safe access, waste removal and making good.
Help the firm prepare for a visit
Count complete windows and identify bays, stone mullions, tiled cills and upper-floor openings over roofs. Say whether you want to replace every window or work in stages. The surveyor should confirm manufacturing sizes and any temporary support requirements.
Photos and rough dimensions can start the conversation, while final dimensions belong to the measuring survey.
Permissions and the right paperwork
For complete replacement windows, confirm the applicable energy, ventilation, safety-glazing and escape provisions with the installer. In England and Wales, an appropriate competent person scheme or building control can provide the compliance route; Scotland and Northern Ireland have separate arrangements. See government guidance on competent person schemes. A registered scheme is one route, not a blanket requirement to use a particular brand of scheme.
Historic glazing, protected elevations and changes to an opening may need consent before an order is placed. Ask Cardiff Council about the relevant local process. Leaseholders should also check any freeholder consent.
Questions for the handover
Ask how rooms will be kept weatherproof during the work and which plaster repairs or decoration are excluded. Keep the product schedule, guarantee and compliance documents after completion.
Manufacturing lead time is separate from time on site, so ask for both. The site's guide fitting time is 1–4 days, depending on scope and access.
Double Glazing Quotes is a matching service and does not carry out the work or employ the specialists. Companies joining the network are asked for relevant insurance details and references. Check current cover, relevant experience and written guarantee terms with the firm you choose.
Coverage near your property
If your property is outside the named area, give its actual postcode so the firm can check coverage.
The questions below explain common decisions about complete window replacement.
Before booking complete window replacement
How can I request complete window replacement quotes across Cardiff?
Use the free enquiry form to give your postcode and describe the affected windows or doors. Double Glazing Quotes can introduce up to four independent window installers covering Cardiff, depending on service coverage and availability. You do not have to accept a quotation.
Must every window be replaced at once?
No. You can ask for a phased order, for example one elevation first. Discuss how later frames, colours and sightlines can be matched and how separate visits affect the price.
Can I keep the frame if only the glass has failed?
Often, yes. A glazier should check the frame, sash and hardware before recommending a sealed-unit replacement. A foggy pane alone does not mean the complete window must be removed.
Does triple glazing always block more noise?
No. Noise reduction depends on pane thicknesses, cavity widths, acoustic layers, frame seals and ventilation openings. Ask for performance evidence for the proposed complete system.
Find out what the work could cost
Describe the affected openings and include your postcode. Suitable window installers covering Cardiff may contact you to discuss the work.