Knowledge & Evidence Watch
Knowledge for better construction evidence decisions.
The Bench Knowledge area is being developed to help project teams understand technical evidence, ask clearer questions and prepare better enquiries.
Construction product evidence can be difficult to interpret without understanding the context behind it. A document may be useful, but only for a particular build-up, test condition, product type, installation route or performance question.
Product evidence knowledge, organised by product area
Alongside general guidance, The Bench maintains structured product evidence records for the product areas we work with. The product knowledge pages set out the questions we most often see for each product, the evidence commonly reviewed, and how to raise a specific question.
Ramco Hicem fibre cement board
Sheathing, carrier board and external build-up evidence questions.
View product knowledge ›
Ramco Hilux calcium silicate board
Fire performance, lining and build-up evidence questions.
View product knowledge ›
Protherm Light
Applied fire protection and thermal build-up evidence questions — substrate, applied thickness and tested configuration.
View product knowledge ›All product knowledge
The full product knowledge area — typical questions, commonly reviewed evidence and review routes.
View all product knowledge ›Product logos identify the product areas our evidence records cover. They do not imply certification, approval, endorsement or guaranteed acceptance of any product or build-up.
Manufacturer or supplier? The Bench can help organise product evidence records, common questions and review routes. Talk to us about product evidence partnership.
Clearer thinking before a formal review
The Knowledge area is intended to help users understand the types of questions that commonly arise around construction product evidence. The aim is to help users ask better questions and understand what information may be needed before a review begins.
Topics may include:
- How to read product evidence more carefully
- Why test evidence may not match a project detail
- What an evidence gap is
- How product comparison should be approached
- What information helps a technical enquiry
- How to prepare a better Building Control query response
- Why project-specific details matter
Building a controlled evidence knowledge base
The Bench is developing an internal knowledge and enquiry structure to support construction technical evidence review. It helps organise source records, project questions, evidence routes, technical learning and structured enquiry intake.
The knowledge base is not intended to provide automatic compliance decisions, certification, statutory approval, Building Control approval or product approval. Its role is to support organised knowledge, clearer enquiry intake and better evidence traceability.
Planned insight topics
What is a construction product evidence gap?
A plain-English guide to the difference between having evidence and having evidence that answers the exact project question.
Why product data sheets are not always enough
An explanation of why data sheets can be useful, but may not define the full evidence basis for a project-specific use.
How to prepare a technical enquiry
A guide to the project information, drawings, documents and questions that help make an enquiry reviewable.
What to check before comparing products
A guide to comparing products by evidence basis, not only headline performance claims.
Why build-up details matter
An explanation of how substrates, layers, fixings, cavities, thicknesses and orientations can affect whether evidence is relevant.
How to respond to an evidence query
A guide to structuring a clearer response when a project reviewer asks for evidence or clarification.
Where questions stall
Common evidence gaps
Many construction product questions do not fail because there is no evidence. They become difficult because the evidence does not quite answer the project-specific question being asked.
Regulatory and evidence landscape updates
Curated updates on building safety regulation, construction products reform and evidence expectations relevant to construction product technical review.
Higher-risk building control approval
Higher-risk building work has specific building control approval requirements through the Building Safety Regulator.
Project teams may need clearer evidence records, build-up information, product data and supporting documents before technical positions can be relied on.
Golden thread information
Higher-risk building projects and occupied higher-risk buildings require structured building information to be created, kept and managed.
Product evidence, technical records, source documents, build-up information and decision records may need to be clearer and more traceable.
Gateway 2 and pre-construction evidence
Higher-risk building work may need approval before work starts, with sufficient information submitted for review.
Product evidence, drawings, fire strategy information and technical assumptions may need to be organised before work begins.
Gateway 3 and completion information
Completion and occupation stages increase the need for accurate project information, evidence records and handover information.
Product substitutions, build-up changes and evidence gaps need to be recorded clearly so completion and handover evidence is easier to support.
Construction products reform
Government construction product reform proposals focus on confidence, regulatory coverage, product safety and product information.
Manufacturers, distributors and project teams may face increasing expectations around product information, traceability, evidence quality and safer claims.
General Safety Requirement for construction products
The proposed General Safety Requirement is part of the wider construction products reform direction.
The direction of travel is towards clearer product information, safer claims and stronger evidence control across more construction products.
Product traceability and digital product information
Construction product reform discussions include clearer product information, traceability and digital information themes.
Better digital records and clearer product information support knowing what evidence exists, what it supports and where limitations sit.
Competence and evidence expectations
The building safety regime places greater focus on competence, accountability and evidence-led decision-making.
Technical claims should be supported by clear source documents, suitable review and controlled limitations.
Have a technical evidence question?
Send us the project question, construction detail and documents you already have. We will review the enquiry and advise on the most suitable next step.
Submit an enquiry