On high ground the edges of a roof carry the most load. Wind pushes under a verge and lifts it, and pulls at the ridge from both sides, so a weakness there can spread along the line in a single storm. Those details take the first beating, so they deserve the most careful fixing.
Q2.1Why do gable verges give way first?
Where a roof ends at a gable wall, the sloping edge is called the verge, where the last row of tiles meets the wall. Builders traditionally bedded that row on mortar and pointed it. Winter after winter the mortar cracks, and one hard gust can then lift whole tiles clear. Re-bedding with fixings, or fitting a dry verge unit that clips to the tiles, gives the edge something to hold on to that does not depend on mortar.
Q2.2How is a ridge refixed?
Ridge tiles sit along the top of the roof. Where the old bedding has failed, we take the tiles off, clean the bed, and refix them with mortar and mechanical fixings, or replace the whole line with a dry-fix ridge. Dry-fix systems are tested to BS 8612:2018 and cut down the mortar work at height. Our ridge, verge and dry-fix service explains the choice in detail.
Q2.3What else should be checked at the same time?
While we are up there, we look closely at the hip ends, the abutment flashings against any chimney or wall, the tiles directly under the ridge, and the condition of the barge boards at the gables. A ridge repaired on an otherwise tired roof is a short fix, and the quote tells you plainly when that is the case. If most of the covering is sound, a ridge and verge refix can give you many further years.