Bay roofs, porches and loft conversions
Carlton houses often have extras added over the decades. Original bay windows carry small roofs of lead, felt or tiles, porches have shallow slopes, and loft conversions put flat-roofed dormers on the back. These are the places where leaks begin, because small roofs with many joins have more ways to let water in.
A flat-roofed dormer that was fitted decades ago may be on its second or third covering, and old felt systems can fail along the seams. Lead at a bay window can crack from thermal movement. We always look at these add-ons separately from the main slope.





