Dimensional stability: design task for ground-bearing floors and screeds
Below a screed, dimensional stability depends on full bearing, access routes and placement of the distribution layer.
In ground-bearing floors and screeds, dimensional stability requires substrate evenness; also check design loads and the absence of point supports.
Dimensional stability: application boundary in ground-bearing floors and screeds
In ground-bearing floors and screeds, dimensional stability has an important boundary. Product stability does not cancel movement in the substrate, supports or structural joints.
For dimensional stability in ground-bearing floors and screeds, address this specific risk: voids below panels.
Dimensional stability: evidence for ground-bearing floors and screeds
For ground-bearing floors and screeds, 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 ground-bearing floors and screeds, apply this principle. Stability is achieved only with correct bearing, properly detailed joints and no unintended bending action.
Dimensional stability: detailing for ground-bearing floors and screeds
The ground-bearing floors and screeds drawing develops dimensional stability through two decisions: substrate preparation; then the load-distribution build-up and designated access routes.
For dimensional stability in ground-bearing floors and screeds, dimensions and interface materials belong in the design, not in an improvised site decision.
Dimensional stability: inputs for ground-bearing floors and screeds
Before assessing dimensional stability in ground-bearing floors and screeds, obtain thermal movement, settlement, the movement-joint map and substrate tolerances.
For ground-bearing floors and screeds, the verifiable dimensional stability requirement is to coordinate substrate movement joints, thermal movement and the insulation layout.
Dimensional stability: installation in ground-bearing floors and screeds
The installation rule for dimensional stability in ground-bearing floors and screeds is to verify full-area bearing.
During ground-bearing floors and screeds work concerning dimensional stability, never bridge a designed movement break unless a dedicated detail permits it.
Dimensional stability: accepting work in ground-bearing floors and screeds
Acceptance of dimensional stability in ground-bearing floors and screeds starts by matching delivery labels, drawings and the installed layout.
For dimensional stability in ground-bearing floors and screeds, close the identified risk with a photograph, measurement or record, not a verbal explanation.
The final ground-bearing floors and screeds criterion for dimensional stability is that the foam-glass layout accommodates structural movement without restraint.
Dimensional stability: conclusion for ground-bearing floors and screeds
In ground-bearing floors and screeds, foam glass delivers its dimensional stability benefit through a coordinated detail, not one schedule entry.
The ground-bearing floors and screeds workflow for dimensional stability is to evidence the property, issue the detail, accept installation and retain concealed-work records.