2. Maximum (Table 3) U-value Requirement (ADL1 paragraph 1.29)

"When using the calculation procedures in the Target U-value and Carbon Index methods it may be possible to achieve satisfactory solutions where the U-values of some parts of elements... are worse than those set out in Table 1. This is provided that the poorer performance is compensated for by better performance of the other elements. ... A way of achieving this would be to adopt local U-values no higher than those in Table 3." (ADL1, paragraph 1.29).

These checks follow the same pattern as the Elemental U-value checks described above under ‘U-value (Table 1) Requirement’, but apply only to roofs, walls and floors.