Rooflight Replacement – Specification

There are many permutations and combinations of rooflight specification available to suit all needs and different criteria. The Hambleside Danelaw Technical Manual provides comprehensive guidance on the performance expectations for different combinations of rooflights. However, we are not building designers and so the final decision

Sheet profiles can be identified by measuring key dimensions – cover width, pitch (distance from one corrugation to the next), depth of profile, crown and trough widths etc. Because many profiles have a similar shape and appearance to others, the dimensions should be measured accurately

For in-plane rooflights to match new metal sheeting or composite panels, or where the profile is known, you need only state the manufacturer, profile and lengths needed, plus box depths and filler positions for composite panels. Don’t forget to allow for the minimum recommended end