The BenchConstruction product evidence review
Evidence first. Claims second.
Building Control, an engineer or a client has asked for proof. You have reports, certificates and data sheets, but no clear answer to the actual question.
The Bench reviews construction product evidence against that question, identifies the gap, and gives you a written position you can use with the project team.
ScopeEvidence review. Not certification, Building Control or design sign-off.
Ready to send your question? The enquiry is where a review starts.Ask The Bench
Real questions, worked through in full with the evidence on the table. Each publication states what it covers and what it does not.
External Wall Design in a Changing UK Climate
Cavities are argued about in absolutes, in both directions. The review reframes the question and puts it to the evidence: when can cavity, part-cavity and cavity-free external walls perform safely and durably, and what evidence shows it. Conclusions are calibrated, and where the evidence runs out it says so.
Scope: an evidence review of wall strategies — not an assessment of any project build-up.
Why specification, exposure and maintenance matter for reactive fire-protection coatings on structural steel
R120 tells you a fire-resistance period. It does not tell you the whole evidence position. The applicable evidence also depends on the member, system build-up, environmental exposure, application and lifecycle conditions.
Scope: reactive coatings on structural steel only. The Bench and connected businesses have commercial interests in passive-fire-protection systems; the Note does not assess, compare, rank or recommend any product.
How to read separate assembly evidence where two wall constructions meet
Two wall constructions can each have sound supporting evidence. This note explains how to check whether that evidence, or other applicable information, addresses the place where they meet.
Scope: how to read separate evidence where two wall constructions meet; fire only, England and the GB product regime. The Bench and connected businesses have commercial interests in passive-fire-protection systems; the Note does not assess, compare, rank or recommend any product.
A dated register of what construction product evidence has to do and where the rules are moving, checked against primary sources. England only; not legal advice. Reviewed 23 September 2026.
Most enquiries begin with one of a handful of situations. Here are three of them, with what is usually missing and what The Bench does about it.
Building Control or a design team has asked a question the data sheet does not answer.
A document that answers the question as asked. A data sheet describes the product; the question usually needs a test report, classification or assessment.
Identifies what the comment is actually asking for and reviews the documents you hold against it, in writing.
A certificate or test report exists, but the project detail differs from the tested arrangement.
A clear comparison of the tested and the proposed arrangement, and what the differences mean for the evidence.
Sets out where the two arrangements match, partially match or differ, and lists the gaps that need resolving.
Two products look similar on paper and the difference actually matters.
Evidence bases that are genuinely comparable: the same kind of document, scope and conditions.
Compares what each product's evidence supports, not the headline claims, and shows where application limits differ.
Not sure which of these is yours?
Answer a few questions and the Navigator points you to the right published material, tells you what usually helps, and builds a summary you can send with your enquiry.
Three figures from Cavity vs No Cavity? — the method the review runs on, drawn for the reader. They are conceptual, evidence-summary figures, marked as such in the report.
Fig. 1Cavity vs No Cavity?
Fig. 2Cavity vs No Cavity?
Fig. 3Cavity vs No Cavity?
Each record sets out where the product is usually proposed, the questions projects ask, and the documents that usually decide them. They are not sales pages.
A connected product route for The Bench. Sheathing, carrier board and external build-up questions.
A connected product route for The Bench. Internal linings, walls, floors and ceilings.
A partner-supported product area for The Bench. Applied thermal-insulating plaster; questions about fire protection and thermal build-ups.
Photographs show the products only. They do not imply certification, approval or acceptance of any product or build-up.
Our identity starts the way our work does: with a drawing. A line becomes an elevation, the elevation is built in timber and galvanised steel, and the finished bench becomes the mark.
13 seconds. Music and sound, no speech. The bench shown is our mark, not a product or a tested build-up.
Behind the named team sits a working network of testing, certification and specification contacts built over years in the industry. Where a question needs a competent person we cannot be — a fire engineer, a structural engineer, a certifier — we say so, and we organise the evidence so their judgement is easier to make.
Send the question, the project detail and the documents you already have. No charge to submit — we quote before any written work starts.
Not sure where your question sits? Find your route ›
What helps us start
You do not need a complete set to get in touch — send what you have.