However this method was complicated getting mortar up to a rooftop is not a simple task and it has been deemed unsafe since mortar crumbles and fails over time and ridge tiles can come loose posing a potential risk to people on the ground below.
How to fix roof tiles at the ridge.
The most common tile types are concrete and terracotta.
Roof cement is primarily used to hold roof tiles hip tiles and ridge tiles securely in place it also keeps out rainwater.
A typical fixing system is shown to the right and consists of.
Bu this type of damage typically happens over a long period of time mostly due to weathering though this can happen over shorter periods if a poor mortar mix is used or applied.
On some roofs all that is needed is to replace a couple of ridge tiles which have come loose in bad weather.
Repair loose or cracked cement roof tiles by lifting up adjacent tiles and sliding new tiles under the wooden batten that holds the tiles to the roof.
Then fresh bedding is laid to support the ridge capping.
With 28 years exp.
The correct mix ratio is 3 parts sand to 1 part cement this is much stronger than bricklayers use 5 1 as the cement on the roof must withstand more driving rain than a typical brick wall.
It is important to install weep holes on the bedding.
You must ensure it is the same type of tile or it may not work and can result in damage even though you ve tried to repair it.
For this type of job the tiles will involve lifting the affected tiles cleaning off the old mortar underneath and around the tile edges.
If you don t know what the tile is take a tile with you to a roofing supplier and they should be able to match it for you.
Then the ridge capping is re pointed with a flexible pointing to bind the ridge caps to the tiles.
1 put on heavy work gloves and safety glasses.
How to fix ridge tiles to a roof traditionally ridge tiles were fixed using mortar to hold them in place.
A proper repair of the main ridge involves the removal of the ridge capping and the old bedding.
Most manufacturers of roofing tiles offer a mechanical fixing systems for ridge tiles which removes the need for mortar.