Address the insulation substance as homogeneous, Whilst in true applications, rigid products have joints and in many cases cracks. As a result, the U-value is usually increased than what It could be if the insulation behaved being a homogeneous product. Reference two gives steering on calculating U-values. Nevertheless have questions https://bedroom-light-fixtures00876.ka-blogs.com/88061289/an-unbiased-view-of-secondary-window