What We DoDefined service
Product comparison review based on evidence, not assumptions.
The Bench reviews product and system evidence where two or more routes are being compared for a defined construction question.
We help separate real evidence differences from marketing claims, incomplete comparisons or assumptions that do not match the proposed use.
ScopeEvidence review. Not certification, product approval or specification.
Products can only be compared against the same question.
Evidence basis
We compare the type and relevance of available evidence, including test reports, certificates, classifications, data sheets and system details.
Application limits
We check whether the evidence relates to the same substrate, thickness, fixing method, build-up, exposure, performance route or project condition.
Gap position
We identify where one product route has clearer evidence, where evidence is missing, and where further confirmation is needed.
Useful where a simple like-for-like answer is not safe.
Boards and sheathing
Comparison of board evidence, racking evidence, reaction to fire evidence, fixing details or project-specific use limits.
Fire and performance routes
Comparison of fire evidence, classification scope, test routes, build-up differences and stated limitations.
Thermal and build-up options
Comparison of U-value routes, insulation options, thermal conductivity values and total system build-up implications.
Façade and wall systems
Comparison of carrier boards, renders, brick slips, cladding support, backing layers and system evidence.
Installation differences
Review of fixing, jointing, substrate, thickness, support centres, exposure and build-up differences that affect evidence transfer.
Evidence confidence
Clear separation between direct evidence, partial evidence, assumptions and missing information.
A clearer comparison note.
A product comparison review can summarise what each route appears to support, where the evidence differs, what assumptions should be avoided and what further information may be needed.
We quote before any written work starts. No charge to submit an enquiry.
No ranking, no product selection
The Bench does not approve, certify, specify or formally select products. The review is an evidence-led technical support output for discussion and decision-making by the relevant project parties.
Two products, and an evidence difference that matters?
Send the question, both product or system names 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
- The question, as it was put to you
- What the product or build-up is, and where it is going
- The documents you already have — data sheets, reports, certificates, drawings
- Any comment from Building Control, the designer or the client
- When you need an answer
You do not need a complete set to get in touch — send what you have.