UK-manufactured timber-alternative sash windows. Ultimate Rose, Heritage Rose and Charisma Rose, by Roseview — the original pioneer of timber-alternative sash since 1985. Approved installer in Peterborough.
5-star on Google
2,000+
Homes fitted since 2016
FENSA
Registered installer
10-Year Guarantee
Product + workmanship, insurance-backed
Made in Britain
Designed and built in the UK
Honest Quoting
No commission, no pressure, no surprises
FENSA Registered
Every install fully certified
About the range
Sash windows have been a defining feature of British architecture since the late 17th century. The Rose Collection — by Roseview, the first company in the UK dedicated to timber-alternative sash — captures all the elegance of traditional timber sashes while delivering the performance and convenience of modern materials. Three systems, four decades of refinement, fitted across Peterborough, Cambridgeshire and the Fens.
Authentic timber sightlines, not the chunky modern sash midrail you find on most uPVC alternatives.
Ultimate Rose uses real mechanical joints — not welded — for a finish indistinguishable from solid timber.
Specified across conservation areas. Often the only uPVC sash window approved on heritage projects.
Roseview pioneered timber-alternative sash. Over 40 years of refinement on a single product.
The collection
The UK’s most authentic timber-alternative sash
The flagship. Ultra-slim 35mm midrail, seamless construction, true mechanical joints, and a host of period features that give Ultimate Rose an unmistakably solid-timber look and feel, both inside and out. Three sash horn designs (Dolphin, Seahorse, Emperor), choice of putty line or chamfered profile, optional deep cill. The benchmark every other timber-alternative sash window in the UK is measured against.
The classic period sash, updated for the 21st century
Second only to Ultimate Rose in the range. High-end traditionally-styled uPVC sash window for homes that want the charm and elegance of period timber sashes with the low-maintenance performance of modern materials. Slightly wider 44mm mitre-welded midrail (vs Ultimate’s 35mm mechanical-jointed), with the same slim putty-line profiles and optional flat run-through or clip-on sash horns. The sweet spot for most Victorian and Edwardian properties.
Competitively priced style and versatility
A bolder, more contemporary appearance with a slightly chunkier midrail. Versatile enough for upgrading existing windows on older properties, or adding retro-chic to newly built homes. More budget-friendly than Ultimate and Heritage, but still built with the same care and the same high-spec Caldwell balances. The right choice when you want sash detailing without the conservation-grade price tag.
At a glance
| Specification | Ultimate | Heritage | Charisma |
|---|---|---|---|
| Midrail width | 35 mm seamless | 44 mm | Wider contemporary |
| Corner joints | True mechanical | Mitre welded | Welded |
| Sash horn options | None · Dolphin · Seahorse · Emperor | None · Clip-on · Flat run-through | None |
| Corner detail | Standard | Standard | Sculptured |
| External profile | Putty line · Flush · Deep flush | Putty line · Flush | Flush |
| Deep cill | 225 mm option | 225 mm option | — |
| Thermal performance | Warm year-round | Warm year-round | Warm year-round |
| Conservation areas | ✓ Best in class | ✓ | — |
| Best for | Listed / conservation areas | Period homes | Modern / mixed |
Not sure which is right for your home? Our team will advise during your free survey.
Finishes
Eight of the most-specified Rose Collection finishes shown. Renolit foil lamination on woodgrain options for authentic timber appearance. Dual-colour available inside and out.
White
Cream
Chartwell Green
Painswick
French Grey
Anthracite
Irish Oak
Woodgrain
Rosewood
Woodgrain
10-Year Guarantee
Product + workmanship, insurance-backed
Made in Britain
Designed and built in the UK
Honest Quoting
No commission, no pressure, no surprises
FENSA Registered
Every install fully certified
Common questions
Three options. Ultimate Rose is the benchmark — true mechanical joints, the most authentic timber look — and the right choice for listed buildings and conservation areas. Heritage Rose has the same slim profiles at a more accessible price — the sweet spot for most Victorian and Edwardian homes. Charisma Rose has a wider midrail and is best for modern properties wanting period character. We’ll help you choose at the survey.
Yes. Ultimate Rose is specified across conservation areas and listed properties nationwide, and we’ve fitted plenty across Cambridgeshire, Lincolnshire and Northamptonshire. Talk to us before submitting a planning application — we’ll advise on the right specification and provide manufacturer letters of authenticity where you need them.
Triple-glazed Rose Collection windows deliver warm year-round thermal performance — significantly better than Building Regulations require and on par with modern casement windows. Six separate weather seals keep the home draught-free and quiet, despite the traditional sliding sash mechanism.
Yes — Ultimate Rose in particular is genuinely difficult to tell from solid timber at close range. Mechanical joints (rather than the visible weld lines on most uPVC sashes), authentic period detailing, and putty-line glazing all recreate the look of a 19th-century timber sash. Most visitors can’t tell until they touch the frame.
Heritage Rose typically runs £950–£1,400 per window fitted. Ultimate Rose sits about 15–25% higher for the mechanical joints and extra detailing. Charisma Rose is the most accessible at £750–£1,100 per window. Every price includes survey, removing your old windows, FENSA registration and our 10-year guarantee. Written quote in 48 hours.
Usually yes, under current Building Regulations. The trickle vents on Rose Collection windows are discreet and colour-matched to the frame so they don’t spoil the look. We confirm what you need at survey — no surprises on the final invoice.
Real installs, real reviews
Period restorations, conservation properties, listed buildings. Here's what homeowners say about their Rose Collection sash windows.
We highly recommend Custom Choice Home Improvements. We recently had seven windows and one door replaced, and the entire experience was excellent from start to finish. From our initial contact, Tariq's communication was clear and consistent.
In total we had 8 windows, a front door and French doors fitted. The Custom Choice team came round, took measurements and then sat down with us to show us the full selection of windows and doors. Tony, the person who came round, was fantastic.
We had 9 new windows and special custom arched front door in Agate Grey. Very pleased, cottage looks super now. Tony was brilliant — steered us through with excellent advice from initial visit and progress satisfaction throughout. Thanks also to Brian — surveyor / fitter
Get your sash quote
Tell us about your property. Written quote in 48 hours, no deposit until you’re happy. Conservation area? Ask us — we’ve done plenty.