Thermal conductivity: design task for flat roofs
In a flat-roof build-up, thermal conductivity starts at falls and penetrations and ends with acceptance of concealed layers.
In flat roofs, thermal conductivity requires drainage and interfaces at parapets and penetrations; also check load distribution.
Thermal conductivity: application boundary in flat roofs
In flat roofs, thermal conductivity has an important boundary. A tabulated conductivity is not the thermal resistance of the finished construction.
For thermal conductivity in flat roofs, address this specific risk: damaged edges or breaks around penetrations.
Thermal conductivity: evidence for flat roofs
For flat roofs, the thermal conductivity source states: For D130, the declared maximum is 0.046 W/(m·K) at (10±1) °C and 0.048 W/(m·K) at (25±1) °C.
For thermal conductivity in flat roofs, apply this principle. The calculation must account for the test temperature and the condition of the complete assembly, rather than relying on one table value.
Thermal conductivity: detailing for flat roofs
The flat roofs drawing develops thermal conductivity through two decisions: layer order; then edge protection and roof-drain details.
For thermal conductivity in flat roofs, dimensions and interface materials belong in the design, not in an improvised site decision.
Thermal conductivity: inputs for flat roofs
Before assessing thermal conductivity in flat roofs, obtain design temperatures, moisture conditions, layer thicknesses, thermal bridges and the calculation method.
For flat roofs, the verifiable thermal conductivity requirement is to record the design temperature, adopted conductivity and value source in the design report.
Thermal conductivity: installation in flat roofs
The installation rule for thermal conductivity in flat roofs is to leave no exposed edges and accept concealed work in stages.
During flat roofs work concerning thermal conductivity, check installed thickness and continuity before the next layer hides the insulation.
Thermal conductivity: accepting work in flat roofs
Acceptance of thermal conductivity in flat roofs starts by matching delivery labels, drawings and the installed layout.
For thermal conductivity in flat roofs, close the identified risk with a photograph, measurement or record, not a verbal explanation.
The final flat roofs criterion for thermal conductivity is that the design value is traceable from the data sheet to the installed layout.
Thermal conductivity: conclusion for flat roofs
In flat roofs, foam glass delivers its thermal conductivity benefit through a coordinated detail, not one schedule entry.
The flat roofs workflow for thermal conductivity is to evidence the property, issue the detail, accept installation and retain concealed-work records.