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
independently tested Acoustics: 33dB
GGF
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

A Timeline of Our Accreditations

You don’t have to just take our word for it. We have received a number of accreditations from top UK authorities to recognise the excellence of our products and service.

A Energy Ratings

In recognition of their outstanding energy efficiency, all of our windows carry an A energy rating as standard. You can say goodbye to cold rooms in winter and stuffy rooms in summer.

Roseview Timeline

Roseview Timeline

PAS 24 & Part Q

As an optional extra, all three of our sash window models can be upgraded to achieve PAS 24 & Part Q compliance.

Secured by Design

Alongside PAS 24 compliance, we offer approval by Secured by Design. This is a police backed scheme that ensures the highest security levels for your customer’s home or commercial property.

Roseview Timeline

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