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Draughty frames, stiff sashes and windows that let in more noise than they used to are usually the first sign that a replacement is overdue. New windows keep heat in, keep cold and street noise out, and improve security and kerb appeal; though choosing between materials, glazing and styles takes some thought, especially in one of Cambridge's conservation areas, where not every product gets approved.
Area Cladding supplies and fits uPVC, aluminium and timber windows across Cambridge and the surrounding villages, as part of our wider home improvement work alongside cladding and external wall finishes. Because window replacement sits alongside our main trade, we understand something most window companies rarely think about: how a window actually sits within the wall around it. Every installation is planned as part of the whole building envelope, so the finished window performs properly, looks right, and stays weatherproof for years.
Years Experience
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Why Cambridge Homeowners Replace Their Windows
Owners of older windows (20–30 years old):
Dealing with condensation between the panes, stiff sashes and rising heating bills.
Owners of period properties:
Owners preparing to sell or let:
Including landlords bringing rental stock up to modern security and efficiency standards.
What Sets Area Cladding Apart on Window Installations
We survey in person, not from photographs.
We'll recommend a repair over a replacement,
We know what Cambridge's conservation officers tend to approve.
We handle the window-to-wall junction as one job.
If you're replacing windows alongside a re-render, cladding upgrade, or fascia and soffit renewal, one team carries responsibility for the whole opening, not two trades pointing at each other if something leaks.
Customer Reviews
Contacted George and he came to visit and recieved his qoute very quickly - I have had several jobs completed by area cladding and the workmanship has been exemplary- with windows - cladding and conservatory improvements- cant fault George and his team and i definitely recommended his work and competitive pricing . Thanks for all the work completed .
Area Cladding round last week to replace 2 door locks. Very friendly and efficient. Great job I chose them because I have had 2 houses of windows replaced over the years and wouldn’t choose anyone else.
I have used Area Cladding Ltd many times in the past for the fitting of windows, doors and external cladding. This time it was two bedroom windows and, once again, George and his team did a brilliant job. The work was done in an efficient and thorough way and my rooms were left exactly as they had been found. I would highly recommend Area Cladding Ltd for this type of work.
Area cladding are a 5 star company. We have had a conservatory built by them and they provided a wonderful service. My parents also had windows and doors provided by them 30 years ago and they are still in great condition. Recently my mum had a problem with the lock on the door and they came within a few hours and fixed it. Area cladding are a top company and i give them the highest recommendation.
Absolutely thrilled with the double glazing windows installed! The team was efficient, fast, and a real pleasure to have around - super pleasant, professional, and even a bit of fun. The windows look fantastic and have already caught the attention of several neighbours asking who did them and if they can get a quote too! It’s clear these guys know what they’re doing. Highly recommend - great work and great people.
Highly recommend Area Cladding! We used them for windows, doors, cladding, fascias/soffits and guttering in March 2025 on recommendation from family and now pass that recommendation on as they are fantastic! They work hard, to high standards, are clean and tidy, competitively priced and a joy to have around, but what we also appreciate, is their knowledge, experience and network, as they have provided us with great support and advice and also contacts for other work we are looking to have done - thank you George, Jack and Jordan and we look forward to having you back again in the future for more home improvements!
Signs Your Windows Need Repair or Replacement
Repair usually makes sense when:
Replacement usually makes sense when:
Our honest recommendation:
Window Styles We Install
Casement windows
The most common window style in the UK. Hinged at the side (occasionally the top) and opening outward, casement windows are straightforward to operate, easy to clean from indoors, and available in almost any frame material and colour. They suit most 1930s semis and modern estates without complication.
Best suited to: Modern homes, family houses, extensions and homeowners looking for a cost-effective, versatile replacement.
Flush sash windows
Sit flush within the frame rather than proud of it, giving a slim, timber-like profile even when built from uPVC or aluminium. Flush sash is frequently the style approved for replacement windows in conservation areas, because it closely mimics the traditional joinery it replaces.
Best suited to: Period homes, conservation areas and homeowners wanting a traditional appearance without the maintenance demands of solid timber.
Sliding sash windows
The traditional window style found on Victorian and Georgian terraces throughout Cambridge, including many properties in the Cambridge Central and Mill Road conservation areas. Modern sliding sash windows use spring balances or concealed weights rather than the sash cords of the originals, and can be double-glazed while keeping the narrow glazing bars and proportions planning officers expect to see.
Best suited to: Victorian terraces, Georgian properties, Edwardian homes and conservation-area replacements.
Tilt and turn windows
A dual-function window that allows you to tilt the top inward for secure background ventilation or turn the handle further to swing the whole sash inward for cleaning or, on upper floors, as a fire escape route. Practical for flats, bathrooms, and properties where outside cleaning access is difficult.
Best suited to: Flats, upper-floor rooms, bathrooms, contemporary homes and properties where safe internal cleaning is important.
Bay and bow windows
Angled (bay) or curved (bow) arrangements of several window units projecting from the wall, adding floor space and natural light. Common on Victorian and Edwardian bay-fronted terraces across Cambridge. Replacement bay windows need accurate structural assessment of the supporting cill and roof above, which is why we always survey in person rather than quoting from photographs.
Best suited to: Victorian and Edwardian bay-fronted properties, feature elevations and homeowners looking to maximise natural light.
French casement windows
A pair of casements opening together with no central frame post, giving an unobstructed view and a wide opening. Better suited to garden-facing or courtyard elevations than street-facing period frontages.
Best suited to: Garden-facing rooms, wider window openings and homeowners prioritising ventilation and uninterrupted views.
Window Frame Materials Compared
| Factor | uPVC | Aluminium | Timber |
|---|---|---|---|
| Typical cost | Lowest | Mid to high | Highest |
| Maintenance | Wipe clean; no painting | Wipe clean; occasional check of finish | Requires periodic repainting or re-staining |
| Typical lifespan | 20–35 years | 35–45+ years | 25–40 years, with maintenance |
| Thermal performance | Strong (multi-chamber frame) | Good with a thermal break; weaker without one | Naturally good insulator |
| Sightlines | Wider frame profile | Slimmest profile, more glass area | Traditional, moderate thickness |
| Conservation-area suitability | Standard profiles often unsuitable; flush sash/heritage ranges can be approved | Slim sightlines suit some period and modern conservation contexts | Usually the preferred or required material for listed buildings |
| Best suited to | Budget-conscious replacement on standard properties | Modern extensions, large glazed openings, contemporary homes | Listed buildings, strict conservation requirements, homeowners prioritising authenticity |
uPVC is the frame material we fit most often in Cambridge, balancing cost, thermal performance and low upkeep for the city's Victorian terraces and post-war semis. Standard profiles are usually too thick for strictly regulated period properties, though flush sash and heritage ranges can pass where a casement wouldn't.
Aluminium frames are thinner and stronger than uPVC for the same opening, letting in more glass and light; useful on extensions or large rear elevations. Without a thermal break, aluminium conducts heat poorly; with one, it matches or exceeds uPVC's performance, at a higher price, with the longest realistic lifespan of the three.
Timber best satisfies a strict conservation requirement or listed-building consent, since it replicates the original joinery rather than approximating it. The trade-off is maintenance, with occasional recoating needed to avoid rot.
For most homeowners outside conservation areas, uPVC gives the best balance. Inside them, heritage-style uPVC or aluminium is usually the practical middle ground.
Not sure which material your street will accept? Get in touch for a free survey.
Window Glazing Options Compared
| Glazing type | Panes | Typical U-value | Best for |
|---|---|---|---|
| Double glazing | 2, with a gas-filled cavity | Around 1.2–1.6 W/m2K | Most standard replacements; the current baseline for new windows |
| Triple glazing | 3, with two gas-filled cavities | Around 0.7–1.0 W/m2K | North-facing rooms, exposed or windy plots, homes near busy roads |
| Secondary glazing | An additional internal pane fitted inside the existing window | Varies; typically improves an existing single-glazed unit substantially | Listed buildings and conservation-area properties where the external window can't be altered |
Double glazing traps an inert gas, usually argon, between two panes, which conducts heat far more slowly than air.
Triple glazing repeats this with a third pane and second cavity, cutting heat loss and noise further, at extra cost and weight.
Triple glazing earns its keep on exposed, north-facing or noisy sites, including some of the more open plots around the South Cambridgeshire villages; for a typical sheltered Cambridge home, double glazing already performs well.
Secondary glazing suits conservation-area and listed properties, delivering much of the thermal and acoustic benefit without touching the original window.
Window Glass, Colours and Finishes
| Feature | Common options | Consideration |
|---|---|---|
| Frame colour | White, anthracite grey, black, cream, woodgrain foils | Conservation areas often restrict colour choice on street-facing elevations |
| Glass type | Low-E, Low Iron, toughened, laminated, acoustic, obscure/frosted | Match the glass to the function of the room, not just the look |
| Hardware finish | Chrome, satin, brass, matte black | Match to existing door hardware for a coherent front elevation |
| Dual colour | Different internal and external finish | Useful where the interior scheme differs from a required external colour in a conservation area |
Window Energy Ratings and Building Regulations
Window energy performance is measured in two related but different ways, worth understanding before you compare quotes.
U-value measures how much heat passes through the window, in watts per square metre per degree Kelvin (W/m²K). The lower the number, the better it retains heat. A single-glazed window can sit above 4.8 W/m²K; a modern A-rated double-glazed uPVC window typically achieves 1.2–1.6 W/m²K, with triple glazing going lower still. This measures the whole window, frame and glass together, not just the glass alone.
Window Energy Rating (WER), assessed by the British Fenestration Rating Council (BFRC), translates that into a simple letter scale from A++ down to G, much like the energy label on a fridge. A window performs only as well as its weakest component; a good glass unit fitted into a poorly sealed frame will underperform its rated U-value.
Building Regulations Part L sets the minimum thermal performance any replacement window must meet. Installers must either be registered with a competent person scheme such as FENSA or have the work signed off separately by building control. Ask any installer which route they use; a proper answer names the scheme, not just shows a logo. Area Cladding is FENSA registered, so every window we fit is self-certified compliant and notified to building control on completion.
Window Security and Noise Reduction
Security in a modern window comes from glass, hardware and frame working together, not any single element. Noise reduction depends mainly on the glazing, but the frame and seals play a real supporting role; a poorly sealed sash lets noise leak around the glass regardless of how good the glazing itself is. Here's what actually keeps a window, and your home, protected.
Multi-point locking:
Multi-point locking engages the sash at several points along the frame when the handle is turned, rather than relying on one latch, standard on new uPVC and aluminium windows.
PAS 24:
PAS 24 is the UK security performance standard, testing the whole window assembly against forced entry. For rental properties and HMOs, which make up a significant share of housing near the colleges, PAS 24-rated windows are increasingly expected by letting standards.
Secured by Design:
Toughened and laminated glass:
Toughened glass is typically several times stronger than standard annealed glass and breaks into small, less dangerous fragments if it fails. Laminated glass holds together even when cracked, resisting forced entry and improving noise reduction. Child restrictors limit how far a window can open; relevant for upper-floor rooms.
Windows for Cambridge's Period Properties and Conservation Areas
Cambridge has 17 council-designated conservation areas within the city, including Cambridge Central, Mill Road, and Castle and Victoria Road, alongside further areas across South Cambridgeshire's villages. Requirements aren't uniform: a listed building almost always needs listed building consent, with material and style expected to closely match the original, while a property simply within a conservation area boundary usually has more flexibility, though many guidelines still expect replacement windows to preserve the street's character.
Three property types come up repeatedly. Victorian and Edwardian terraces, common through Mill Road, Romsey, Chesterton and Newnham, keep their proportions best with flush sash or genuine sliding sash replacements. 1930s semis across the outer suburbs are rarely restricted, giving more flexibility on uPVC or aluminium. Modern developments usually have no planning restriction, though any Article 4 direction should be checked first.
Before you commit to a style, check whether your property is listed or simply within a conservation area boundary using the council's planning search maps. We can advise on which of our window systems are most likely to be accepted for your street based on precedent nearby. Talk to us before you order.
How Your Windows and Cladding Work Together
A new window doesn't sit in isolation; it sits inside a wall opening, against a reveal, and often against a cladding or render finish. Get that junction wrong, and you get water ingress, cold bridging, or a visibly poor fit, whatever the quality of the window itself.
The reveal's depth and finish needs to match the new window's position, particularly if the frame sits differently to the one it replaces. If your walls are insulated, the window must be sealed so the insulation runs continuously to the frame, avoiding a cold bridge. The seal at this junction matters as much as the window's own seals, and is a common cause of damp around otherwise sound installations.
Because we fit both windows and wall finishes, one team carries the whole job; ask us if you're planning a re-render or cladding upgrade alongside new windows.
Our Window Installation Process
What Affects the Cost of New Windows
Cheap uPVC windows exist and can be entirely appropriate for a straightforward, non-period property on a tight budget; the trade-off is usually thinner profiles and shorter guarantees, not basic function. We'll tell you honestly where a lower-cost specification is a saving, and where it's a false economy.
Window Guarantees and Aftercare
A guarantee is only useful if you understand what it actually covers. A product guarantee covers the window system itself, frame, glazing unit and hardware, against manufacturing defects, for a period set by the manufacturer. An installation guarantee covers the fitting work, sealing, weatherproofing and structural fit, provided by us rather than the manufacturer.
Unauthorised third-party repairs, unrelated structural movement, and neglected maintenance such as blocked drainage channels are the most common reasons a claim gets refused. Confirm exactly what's covered, for how long, and what would void it before you order; it applies to the property, not just to you as the owner.
Every quotation we provide sets out guarantee terms in writing from the outset.
Common Window Buying Mistakes to Avoid
A few recurring mistakes account for most of the delays and disputes we see on window projects.
Choosing a style before checking planning status: Ordering a standard uPVC casement for a conservation-area property, only to find it won't be approved, is one of the most common and most avoidable delays.
Comparing quotes on headline price alone: Two quotes for "double glazed uPVC windows" can specify very different frame profiles, glazing tiers and guarantee terms; ask for a like-for-like written specification before comparing prices.
Ignoring the cill and lintel: A window quote that doesn't mention the condition of the surrounding structure may be missing costs that surface once installation begins.
Overlooking ventilation: Removing draughty old windows without specifying trickle vents can increase condensation elsewhere in the room, since the old, imperfect seals were providing background ventilation the new, better-sealed window no longer does.
Assuming all guarantees are equal: A 10-year guarantee covering only the sealed glass unit is not the same as one covering frame, glass and hardware together.
Our Window Services Across Cambridge and Surrounding Areas
We take pride in delivering durable, great-looking results with honest pricing and outstanding service.
Get a Free Window Quote in Cambridge
If you're weighing up composite against uPVC, wondering whether your Victorian terrace needs planning permission, or just want an honest price for a new set of bi-folds, get in touch and we'll arrange a survey. We'll give you a clear recommendation based on your property and priorities, not a one-size-fits-all pitch.