Why Ridge Tiles Come Loose in Winchester
Ridge tiles are bedded in mortar that carbonates and loses adhesion over 20β30 years. On Winchester's chalk ridge locations β Kings Worthy, Teg Down, Harestock, Compton β wind exposure accelerates carbonation and we see ridge failures occurring 5β10 years earlier than on sheltered valley-floor properties. On exposed chalk ridge plots, we recommend ridge inspection every 5 years rather than every 10. A loose ridge tile is not a cosmetic issue β it is a falling object risk and a route for water entry into the roof structure.
Repair vs Full Rebed
Re-fixing 1β3 tiles is appropriate where the surrounding bedding is sound. A section rebed is appropriate where a specific run β typically the most exposed south-westerly-facing section β has failed while the rest is sound. A full ridge rebed is the correct answer on any roof over 30 years old where more than a third of tiles are loose or the mortar sounds hollow across most of the run. We rebed using flexible mortar throughout β not rigid sand and cement β which accommodates the thermal movement that causes original mortar to crack.
Free survey and written quote. No call-out fee. No obligation. Call 01962 809171.