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What’s The Difference Between R9, R7 & R²?

Having won the National Fenestration Awards Timber Alternative Company for the 4th year this year, we keep being asked this question; What is the difference between your three window systems?

All offer a virtually maintenance free premium timber alternative solution. A traditionally flush external appearance with a superior thermal, acoustic and u-values, there is a solutions for any home.  We’ve put this together to run you through the main differences to help you choose the right one for your home.

Residence 9 – Decorative interior | 100mm Profile Depth | 9 Chambers

The original and the best- Residence 9 is proud to be designed with the enduring designs of British architecture in mind. It has many bespoke options that can satisfy a range of properties from the grandeur of stately homes to the solid good looks of Georgian and Victorian, right through to the present day.

The design brief for Residence 9 was to extract the key principles, shapes, and dimensions from the Article 4 Conservation Area guidelines for windows and integrate market leading technology into the design using virtually maintenance free materials. Residence 9 is thermally and acoustically brilliant. It features the latest security, maintenance, and performance innovations, whilst appearing traditional. With fully foiled rebates for the optimum timber alternative solution.

Residence 7 – Flush interior | 75mm profile depth | 7 chambers

Its small profile depth make it perfect for new builds and renovation modern British homes.

Elegantly flush sash exterior and interior gives the R7 its chic modern appearance and the versatility to be used for both contemporary new builds and traditional British homes alike. All glass sight-lines are perfectly equal providing symmetry for a timeless kerbside appeal. 

Residence² – Squared internal | 100mm profile depth | 9 chambers

Very clear in its’ design. With a cutting edge internal shape it is unconventional and unique.

R² has been engineered to meet current and anticipated future standards, made to CEN A wall thickness which is the highest classification in Europe. Other window frames typically offer 3 or 5 chambers and are usually 70mm wide, R² has 9 chambers and is 100mm wide, resulting in superior thermal, acoustic, strength and security performances.

Got any more questions? Get in touch! As well as everyone here at eh the Residence HQ, we have a network of highly experienced installers who are ready to assist you in your home improvement projects. Whether its R9, R7 or R2, our team will support you through the entire process.



At Residence Collection, we have a range of colours available and can offer everything from timeless classics like Grained White to modern favourites such as Eclectic Grey. Don’t forget, we also offer a dual finish that allows you to find windows and doors that look as good from the inside as they do outside.