The thermal transmittance (U-value) can easily be calculated and estimated for homogeneous materials and constructions by manually calculating the insulation value for each layer. However, it becomes more complex when accessing the U-value for inhomogeneous constructions. For example in cases where the insulation is placed at the soffit of a concrete roof with the concrete beams penetrating the insulation as shown in the figure.
The best option for determining the U-value of these inhomogeneous constructions is to perform steady-state finite-element computer simulations, either 2-dimensional or 3-dimensional, if you are not an expert in such simulations, we can assist you by producing a full simulation report on demand for only USD49.
The U-value report can be used to show compliance vis-à-vis the building code and/or green building certification requirements. For example, in Malaysia, U-value compliance to MS1525 U-value requirements for roofs and the Green Building Index (GBI) Credit Requirements.
Is the generic construction shown above not what you are searching for? No problem, please contact us at with your request and we will get back to you with a customized quotation.