Perfect uPVC Sash Windows

At Roseview Windows we understand the intricacies involved in designing and constructing a project. In particular, the windows are a crucial part of the building’s aesthetic appeal. At the same time they need to ensure optimal performance while complying with all the necessary regulations and requirements.

With more than 40 years of manufacturing expertise, we offer a range of sustainable and dependable timber-alternative sash windows. Crafted with a commitment to quality, our products stand the test of time, providing assurance and reliability for years to come. Not only do our windows enhance internal light, but they also contribute seamlessly to the overall aesthetics and style of your building.

If you’re designing or specifying for a project that would benefit from traditionally-styled, quintessentially British sash windows, you can depend on Roseview’s experience, knowledge and expertise to ensure that your project runs smoothly.

The Rose Collection

The Rose collection represents the epitome of high quality uPVC sliding sash windows and the best choice for architects and specifiers. They offer truly authentic timber aesthetics while combining all the modern benefits provided by uPVC materials. The pinnacle of this technology is the Ultimate Rose window, completely indistinguishable from timber sliding sash windows even upon close inspection. These make them ideal for architects and specifiers working on both renovation projects and high-end new builds.

Keep scrolling to find out more about how our sash windows and experience can combine to assist you on your project.

Trade Glaze Sash Windows

Experience To Tackle Any Project

Having been dedicated to the manufacture of uPVC sash windows since 1985, Roseview has unrivalled experience within the industry, particularly with architects and specifiers. We understand that every project is different, bringing its own set of specifications, requirements and challenges to overcome. With our wealth of experience, we know how to overcome virtually any problem and create the perfect sash window project for any architect and specifier.

gothic style arched sash windows

Experience To Tackle Any Project

Architects and specifiers have a host of challenges to overcome when starting a project. These challenges could arise from fitting new sliding sash windows into an original space or just complying with many regulations. It could be as simple as finding the right uPVC sash windows to fulfil the project’s needs and requirements. Thankfully, we have dealt with many of these problems before and have made sure every architect and specifier we’ve worked with has found a solution.

cottage arched sash windows

Technical Assistance

Specifying sash windows is the same as specifying any building product. You need full technical backup, including technical and CAD drawings, full specifications, and full accreditation details. At Roseview we have that covered for you, so you can choose our windows safe in the knowledge that everything is already in place to make your project successful.

Our knowledgeable staff are well-versed in the technical requirements required by architects and specifiers. From energy efficiency to sustainability, security to acoustics, we already have everything you need. And if we don’t, we’ll get it for you.

The Importance of Accreditations

Accreditations are a key quality indicator, vital for architects and specifiers looking for a reliable source of sash windows. You need to ensure that the sliding sash windows you receive are perfect for the project in question and provide a more than adequate performance. To make sure your new vertically sliding windows adhere to every building regulation, you can check our list of accreditations below.

Roseview win G16 award

Our Accreditations

Accreditations aren’t just important for providing peace of mind, they’re also crucial for complying with relevant building regulations, especially on commercial projects.

All our windows are fully tested and accredited to the highest standards achievable with sash windows, and—wherever possible—we go above and beyond the documented standards. Not only does this ensure full compliance and guaranteed performance, it helps elevate industry standards to new levels.

A-rated (BFRC Thermal Ratings Register)
U-value (1.5 standard, 1.4 and 1.2 options)
BS 6375 (Weathertightness)
BS 12207 class 3 (Air permeability)
SBD (option)
PAS24 (option)
Part Q (option)
CMS Mark BS EN 14351
REHAU partner

Our Awards

G13 Winner
G16 Winner
SME 2017 Winner
SME 2018 Finalist
BuildIt Shortlisted 2019
BuildIt Shortlisted 2020
G21 Finalist
BuildIt Shortlisted 2022
G23 Finalist


Accurate and complete specifications are an important part of a smooth design process. An incomplete spec can affect everyone involved in delivering the project, while potentially leading to delays and costs for the client.

Detailed specifications and product data for all our sash windows can be found on NBS, from where they can be seamlessly integrated into projects. You can access the information from anywhere and pull it straight into your specification or design model, saving hours of time on research.

Just log into your NBS account and search for “Roseview Windows” to access everything you need.

Sustainable uPVC Sash Windows

Historically uPVC wasn’t renowned for its sustainability or environmental credentials. Today all the major uPVC systems houses take recycling and sustainability very seriously, and have taken great strides in making uPVC a truly sustainable building product.

In our case, we use profiles from two global companies: REHAU and Eurocell. Both own and operate their own full-service uPVC recycling centres, close to their extrusion plants. Furthermore, both operate a closed-loop recycling system, where old and waste uPVC is recycled back into new window profiles on site. This consumes less fuel and energy and generates far less waste than standard recycling.

For more information, visit our Sustainable Future page.

Get in Touch

Contact us either online or over the phone to find sliding sash windows for architects and specifiers.

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