For specifiers
Details, data and a straight answer at design stage
Architects, building designers and project managers get the same thing here. What the system will achieve in your building, documented well enough to specify, and early enough to be useful.
Where we help
Earlier is cheaper
Design tool
Set the Rw target before you draw the wall
The most expensive mistake on an operable wall is specifying the rating too low and finding out at handover. This gets you to the right band in three questions.

- Answers in the band you would write into a spec, not a single false-precision number
- Tells you when a rated wall is not warranted, rather than upselling one
- Flags the ceiling void, which is what actually limits most installations
What rating do you actually need?
Three questions. The answer is the band to write into your spec, or sometimes that a rated wall is not what this room needs.
Answer all three and the target band appears here.
Specifier pack
Tell us what you need and we'll send it
We email the current revision rather than publishing a folder that goes stale. It also means we can mark a detail up for your actual opening instead of a generic one.
If your project has a specific opening, include the dimensions and the target rating and we will come back with the detail adjusted rather than the standard sheet.
Budget rates for a tender estimate can go in the same email. Ask, and say what stage the project is at.
Working to a program?
Send the opening and the dates. We will tell you the lead time and what has to be resolved by whom before it can be ordered.
