Why TTH
TTH quality and documentation
Quality information is useful when it connects a visible component, an agreed specification and a traceable record. Review what is being supplied, which evidence applies and how the finished package will be checked.
Discuss your project
Turn appearance and operation into agreed checks
A color name, product photograph and model label each answer only part of the quality question. Use a finish reference for appearance, component drawings for identification and an equipment schedule for operation. Agree which surfaces will be visible, how samples will be approved and which movements will be demonstrated. When side systems or lights are included, assess the whole configuration rather than the bare frame alone. Inspection requirements should be written into the order early enough to arrange the necessary records or any requested independent inspection.
Example: a seal report and a complete-system report
The product library contains different kinds of supplier information, including component testing and a report for an E220 pergola specimen. Their scopes are different. A seal-material test answers questions about the submitted material and listed test items; it does not establish roof drainage, structural capacity or the life of a complete pergola. Similarly, a system report must be checked against the specimen, dimensions and test conditions. Request the applicable document for the quoted configuration and confirm its permitted use. A supplier document or laboratory name is not, by itself, TTH certification.
Match seal tests and complete-system documents to their scope
Ask for the complete applicable document rather than a cropped logo or a result taken out of context. Keep the document together with the configuration it was used to assess; otherwise later changes can make the reference ambiguous.
- Identity: who issued it, who holds it and which product or material was submitted?
- Configuration: do model, dimensions, supports and included components match the proposal?
- Method: what was measured, under which conditions, and with which stated limitations?
- Version: is the issue date, revision and complete page set available for review?
- Application: what additional site review or destination-specific documentation is still required?
Carry the specification through to handover
Before dispatch, agree the packing list and the photographs or inspection records required for your order. At receipt, match package labels and visible condition to that list, then record discrepancies with clear photographs before details are lost. At handover, retain the final drawings, component identification, operating guidance and the written warranty for the supplied equipment. These records serve different purposes: a packing photo records a shipment condition, while an operating check records a particular function. Neither replaces the applicable technical evidence. Tell TTH the model, destination and purpose of your document request.