Moisture and vapour: design task for foam glass gravel
In a loose-fill layer, moisture and vapour depends on grading, compaction, levels and separation of gravel from soil.
In foam glass gravel, moisture and vapour requires drainage and separation from adjoining materials; also check particle grading.
Moisture and vapour: inputs for foam glass gravel
Before assessing moisture and vapour in foam glass gravel, obtain moisture direction, barrier positions, sealant specification and every penetration detail.
For foam glass gravel, the verifiable moisture and vapour requirement is to verify joints, interfaces, penetrations and the compatibility of sealing materials separately.
Moisture and vapour: application boundary in foam glass gravel
In foam glass gravel, moisture and vapour has an important boundary. Low vapour permeability cannot correct an unfilled joint or a break in external waterproofing.
For moisture and vapour in foam glass gravel, address this specific risk: uneven thickness.
Moisture and vapour: evidence for foam glass gravel
For foam glass gravel, the moisture and vapour source states: The D130 technical data sheet states a water-vapour permeability of no more than 0.003 mg/(m·h·Pa).
For moisture and vapour in foam glass gravel, apply this principle. Moisture protection depends on system continuity: product properties cannot compensate for open joints or a defect in an adjoining layer.
Moisture and vapour: detailing for foam glass gravel
The foam glass gravel drawing develops moisture and vapour through two decisions: compaction method and geosynthetic separation; then grading.
For moisture and vapour in foam glass gravel, dimensions and interface materials belong in the design, not in an improvised site decision.
Moisture and vapour: accepting work in foam glass gravel
Acceptance of moisture and vapour in foam glass gravel starts by matching delivery labels, drawings and the installed layout.
For moisture and vapour in foam glass gravel, close the identified risk with a photograph, measurement or record, not a verbal explanation.
The final foam glass gravel criterion for moisture and vapour is that moisture protection forms one continuous line through corners, supports and transitions.
Moisture and vapour: installation in foam glass gravel
The installation rule for moisture and vapour in foam glass gravel is to build a trial area.
During foam glass gravel work concerning moisture and vapour, inspect filled joints under raking light and record interfaces before covering.
Moisture and vapour: conclusion for foam glass gravel
In foam glass gravel, foam glass delivers its moisture and vapour benefit through a coordinated detail, not one schedule entry.
The foam glass gravel workflow for moisture and vapour is to evidence the property, issue the detail, accept installation and retain concealed-work records.