Dimensional stability: design task for walls and façades
In an external envelope, dimensional stability becomes visible where the substrate, insulation and finish meet.
In walls and façades, dimensional stability requires continuity of the insulation layer; also check interfaces around openings and compatibility with finish layers.
Dimensional stability: application boundary in walls and façades
In walls and façades, dimensional stability has an important boundary. Product stability does not cancel movement in the substrate, supports or structural joints.
For dimensional stability in walls and façades, address this specific risk: local breaks in the layer.
Dimensional stability: evidence for walls and façades
For walls and façades, the dimensional stability source states: D130 dimensional stability is stated as no more than 0.2%, with a coefficient of thermal expansion of 8×10⁻⁶ 1/°C.
For dimensional stability in walls and façades, apply this principle. Stability is achieved only with correct bearing, properly detailed joints and no unintended bending action.
Dimensional stability: detailing for walls and façades
The walls and façades drawing develops dimensional stability through two decisions: the panel layout; then fixing method and sequence of finish installation.
For dimensional stability in walls and façades, dimensions and interface materials belong in the design, not in an improvised site decision.
Dimensional stability: inputs for walls and façades
Before assessing dimensional stability in walls and façades, obtain thermal movement, settlement, the movement-joint map and substrate tolerances.
For walls and façades, the verifiable dimensional stability requirement is to coordinate substrate movement joints, thermal movement and the insulation layout.
Dimensional stability: installation in walls and façades
The installation rule for dimensional stability in walls and façades is to verify substrate flatness.
During walls and façades work concerning dimensional stability, never bridge a designed movement break unless a dedicated detail permits it.
Dimensional stability: accepting work in walls and façades
Acceptance of dimensional stability in walls and façades starts by matching delivery labels, drawings and the installed layout.
For dimensional stability in walls and façades, close the identified risk with a photograph, measurement or record, not a verbal explanation.
The final walls and façades criterion for dimensional stability is that the foam-glass layout accommodates structural movement without restraint.
Dimensional stability: conclusion for walls and façades
In walls and façades, foam glass delivers its dimensional stability benefit through a coordinated detail, not one schedule entry.
The walls and façades workflow for dimensional stability is to evidence the property, issue the detail, accept installation and retain concealed-work records.