What we doEvidence review and technical guidance

Evidence, examined against the question being asked.

Many construction product questions cannot be answered by a single data sheet, certificate or test report. The Bench reviews the evidence, maps it against the actual question, and produces clear written outputs the project team can use.

We work for project teams, manufacturers, distributors and contractors — anyone holding paperwork that does not quite answer the question being asked of it.

Ask The Bench See the work in Learn

Evidence first. Claims second.

01What is stuck?

Most enquiries start with a question the paperwork does not quite answer

Work usually starts when a project, a product claim or a submission is held up by one of these situations. Each row shows what is usually missing and what The Bench does about it.

  1. The situation

    Building Control or a design team has asked a question the data sheet does not answer.

    What is usually missing

    A document that answers the question as asked. A data sheet describes the product; the question usually needs a test report, classification or assessment.

    What The Bench does

    Identifies what the comment is actually asking for and reviews the documents you hold against it, in writing.

  2. The situation

    A certificate or test report exists, but the project detail differs from the tested arrangement.

    What is usually missing

    A clear comparison of the tested and the proposed arrangement, and what the differences mean for the evidence.

    What The Bench does

    Sets out where the two arrangements match, partially match or differ, and lists the gaps that need resolving.

  3. The situation

    Two products look similar on paper and the difference actually matters.

    What is usually missing

    Evidence bases that are genuinely comparable: the same kind of document, scope and conditions.

    What The Bench does

    Compares what each product's evidence supports, not the headline claims, and shows where application limits differ.

  4. The situation

    A build-up mixes products from different manufacturers and nobody holds the whole evidence picture.

    What is usually missing

    One view of which evidence covers which layer, and where nothing covers the combination as built.

    What The Bench does

    Assembles and weighs the evidence layer by layer, and states what it does and does not support for the build-up as a whole.

  5. The situation

    A claim is about to be made and it is not clear the evidence behind it holds up.

    What is usually missing

    A traceable link from the claim to a source document that supports it, within that document's scope.

    What The Bench does

    Reads the claim against its sources and separates what is supported from what should not be overstated.

  6. The situation

    The next step is unclear and the programme is not waiting.

    What is usually missing

    The realistic options in order, what each one needs, and who the decision belongs to.

    What The Bench does

    Sets the options out in order, with ready-to-use questions for suppliers, designers or Building Control.

02How we help

Six kinds of problem. One method.

Whatever the route in, the method is the same: the question is pinned down first, the evidence is read against it, and the position — including its gaps and limits — goes to you in writing.

Evidence review

The documents you have — data sheets, test reports, classifications, certificates, drawings — reviewed against the question actually being asked. We check whether the product, thickness and version match the evidence; whether the document is the kind of evidence the question needs; and whether it covers the proposed substrate, fixing, exposure and use.

Where it lands: what the evidence supports, what it does not, and what remains unclear — in writing.

Defined Bench service: Construction product evidence review ›

Technical investigation

Deeper examination of a build-up, product or system where the evidence needs working through rather than checking off — the question reframed properly, the evidence assembled and weighted, conclusions in calibrated language with confidence stated.

What that looks like in public: Cavity vs No Cavity? Investigation 001

Evidence-gap identification

The gap check separates what is supported from what remains unclear — often the most important part of any review. A gap may exist because the tested build-up differs from the proposed one, the certificate does not cover the project detail, or a performance claim is not linked to any source document.

Where it lands: a gap list your team can act on, flagged before it becomes a project problem.

Comparison and option review

Products, systems or technical routes compared on what their evidence supports — not on headline claims. We check whether the evidence bases are genuinely comparable, where application limits differ, and where one route has clearer evidence than another.

Where it lands: a comparison note separating direct evidence, partial evidence, assumptions and missing information.

Defined Bench service: Product comparison review ›

Technical written guidance

When Building Control, a design team or a client raises a query, we identify what the comment is actually asking for, review the documents against it, and set out in writing what is supported, what remains unclear and what should not be overstated.

Where it lands: a structured written response the project team can review, use and keep on record.

Defined Bench service: Building Control query support ›

Decision support

When the answer is not yet clear, the realistic options from here, set out in order — what each one needs, who to ask, what to request, and ready-to-use questions for suppliers, designers or Building Control so the right people answer the right things.

Where it lands: a written basis your team can discuss and record before committing to a route.

03Specialist coordination

Make specialist time count

Some questions need an engineer, a fire specialist, a building-physics specialist, a manufacturer's technical team, a laboratory, a certification or assessment body, or another construction professional. The Bench can prepare the evidence before that specialist is engaged — organising the documents, defining the question, identifying gaps and producing a clear technical brief.

  • Organising drawings, reports, certificates and technical documents
  • Removing duplication and identifying missing information
  • Defining the actual technical question
  • Identifying known evidence gaps and conflicting information
  • Recording the relevant assumptions and limitations
  • Preparing an evidence register or a concise technical brief
  • Setting out the specific questions that need specialist judgement

Specialist time can then go on the judgement only they can provide, not on untangling the information first. The aim is a more focused review and more proportionate specialist fees. Where it helps, we can bring their response back into the wider evidence position, without claiming their judgement as ours.

The Bench does not replace the specialist. We prepare the evidence so their time can be used where it adds the most value. Where a manufacturer's technical team contributes, their input is described as manufacturer technical input, not independent review.

Prepare for specialist review

04The process

From enquiry to evidence-led response

The aim is not to overclaim or provide approval. The aim is to make the evidence position clearer.

  1. Submit the enquiry

    It starts with the technical question — plus the project context, the product or system involved, the proposed detail, the documents you have, and the urgency.

    OutcomeSend what you have; the review identifies anything missing.

  2. Intake and triage

    We identify the type of question being asked, what information is available, what appears missing, and what kind of output fits.

    OutcomeA quote before any written work starts.

  3. Evidence review

    The documents are read against the actual question — checking whether the evidence relates to the proposed product, build-up, substrate, fixing, thickness, orientation and performance requirement.

    OutcomeEach document read against the question actually being asked.

  4. Gap check

    What is supported gets separated from what remains unclear. The gap check keeps claims inside the evidence and makes the limits visible.

    OutcomeThe limits made visible before anyone relies on them.

  5. Written output

    The position goes to you in writing, in the form the enquiry needs.

    OutcomeA short technical response, review note, comparison note, gap register, options review or report.

  6. Next steps

    Where further information is needed, we identify what should be clarified before a position is relied on.

    OutcomeWhere a judgement belongs to a fire engineer, designer or Building Control, we say so.

05What you get

A clear written position

  • A written evidence summary — what was reviewed, what it supports, what remains unclear
  • A gap list and risk notes, flagged before they become project problems
  • The realistic next-step options, in order, with what each one needs
  • Ready-to-use questions for suppliers, designers or Building Control
  • A written basis your team can discuss and record before committing
06Scope and limits

What The Bench is not

  • Not a certification body, and not a route to guarantee approval
  • Not Building Control, and not statutory sign-off of any kind
  • Not a designer taking design responsibility
  • Not a substitute for project-specific professional judgement
  • Not legal advice

Where an enquiry needs one of those roles, we still help organise the question, the evidence and the gaps — but the decision sits with the appropriate duty holder, professional, regulator or approving body.

07What to send

Send what you have

The more of this that arrives with the enquiry, the faster the review starts — but none of it is required to get in touch:

  • The technical question being asked
  • Project name and location
  • The product or system involved
  • The proposed build-up or detail
  • Drawings, sketches or photos
  • Data sheets, test reports, certificates
  • Building Control or project comments
  • Deadline and required output
08Not sure?

Not sure what applies?

Ask a quick question and we will point you to the right route. The guided technical enquiry walks you through the question, the build-up and the documents step by step — and the review identifies anything missing, unclear or outside scope.

Ask The Bench

Stuck on a construction evidence question?

Send the question, the project detail and the documents you already have. No charge to submit — we quote before any written work starts.

Ask The Bench Ask a quick question

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.