It is relevant to basements, foundations and protected roofs. The system must be selected for the actual site conditions rather than on a generic promise of performance. For procurement, the technical submittal should define the intended function, compatible substrates or equipment, operating environment, product boundaries, warranty terms and exclusions.
Where multiple products form one system, approval should cover the complete assembly and not just an individual component.
Design and installation considerations
Critical execution controls include lap welding or adhesion, penetrations and protection boards. The responsible designer or installer should verify interfaces with adjacent trades, service access, sequencing and site safety before work starts. Installation records should document approved materials, batch or serial traceability, environmental conditions, workmanship checks and deviations.
Quality assurance
- Acceptance should examine seam integrity and puncture resistance.
- Use relevant project standards and manufacturer instructions for inspection frequency, allowable tolerances and remedial action.
- Common failure causes include inadequate preparation, incompatible components, incorrect installation sequence and failure to test under realistic operating conditions.
Selection and limitations
A suitable specification compares whole-life cost, maintainability, site constraints, exposure, safety and evidence of actual performance. No universal coverage rate, service life, output, dosage or performance guarantee should be published without a current product-specific document and project verification.
General technical guidance. Final product selection, dosage and system details are confirmed from the manufacturer data sheet and a site assessment.
