Roof Ridge Capping Cracked
Re-Pointing & Re-Bedding Ridge Tiles (2026)

What the ridge capping does

On a pitched tiled roof, the ridge is the top line where the two roof faces meet, and the hips are the sloping lines where faces meet on a hipped roof. Ordinary tiles cannot close these joints, so a row of curved ridge or hip caps sits over them. On most Malaysian clay and concrete tile roofs, those caps are bedded in cement mortar, and the exposed mortar joints between and under the caps are pointed so that the line looks neat and sheds water.

That mortar is doing two jobs at once: holding the caps down in the wind, and sealing the gap under them. ClickBina's roof tile leak repair guide describes it as the brittle partner in a roof that moves with heat and wind, which is why the ridge line is one of the first places a tiled roof starts to fail.

Why ridge mortar cracks

A roof in the Klang Valley heats up hard in the afternoon sun and cools quickly in an evening storm. The tiles, the timber or steel underneath and the mortar all move by different amounts, and a rigid mortar joint cannot follow. Hairline cracks appear along the bedding, water gets into them, and over the years sections of pointing loosen and drop onto the roof or into the gutter.

Want a first budget before you ask for quotes? Our Roof Repair Cost Calculator adds up the published range for each roof repair you tick — a planning range, not a quotation.

• Age. Mortar on an older roof has simply been through too many heat and rain cycles.
• Movement. A sagging ridge beam or settling structure opens the joints from underneath.
• Poor original mix. A weak or over-sanded bedding mix crumbles far sooner than a proper one.
• Foot traffic. Anyone who walks along the ridge to reach a satellite dish, aircon unit or water tank can crack the caps and the bedding.
• Vegetation. Moss and small plants rooting in the joints hold water against the mortar.

Signs the ridge is the problem

The ridge rarely announces itself directly. These are the usual clues, most of which you can check from the ground or from inside the roof space:

Storm-only leaks are easy to misread. ClickBina's guide to wind-driven rain under roof tiles explains why a roof can stay dry in normal rain and leak only when wind pushes water sideways under the caps and laps.

Inspecting the ridge without walking on it

Clay and concrete tiles crack under a foot planted in the wrong place, and the ridge is the worst place to walk. The roof tile leak guide's advice to owners is to stay off the roof entirely: most of what matters can be seen from the ground with binoculars, from a ladder at the eaves, or from the roof space.

1. From the ground, look along the ridge and hips for gaps under the caps, missing pointing and caps sitting out of line.
2. Check the gutters and the ground around the house for fallen mortar.
3. In the roof space on a bright day, look up at the underside of the ridge for points of daylight and tide marks on the underlayment or timber.
4. After heavy rain, note exactly where the ceiling stain is and whether it lines up with the ridge above.

If a leak appeared soon after someone was on the roof for other work, walking damage should be the first suspect.

Re-pointing: when the bedding is still sound

Re-pointing is the lighter repair. The loose and cracked pointing is raked out, the joints are cleaned, and new pointing is applied along the caps. The roof tile leak guide describes the repair as repointing with a flexible pointing compound; unlike plain mortar, a flexible compound can move with the roof instead of cracking again at the next heat cycle.

Re-pointing makes sense when the caps are still firmly bedded and only the outer joints are cracked. It is quicker, disturbs fewer tiles and costs less. It will not fix caps that already rock or have lifted, because the problem there is the bedding underneath, not the surface.

Re-bedding: when the caps are loose

Where the old mortar has failed wholesale, the caps are lifted, the old bedding is cleaned off, and each cap is set back down on fresh bedding and then pointed. ClickBina's roof repair cost guide describes this as re-bedding loose ridge tiles and re-mortaring, and its worked example strips and re-beds the ridge with a polymer-modified mortar.

Re-bedding is also the moment to deal with anything the old mortar was hiding: broken caps, a damaged tile course under the ridge, torn underlayment at the top of the roof, or a ridge line that has sagged. Caps that are cracked through are replaced; matching an old profile can be the hard part, so a contractor may salvage matching caps from a less visible part of the roof.

Metal ridge capping on metal roofs

Metal deck roofs have a different ridge: a folded metal ridge cap screwed over the top of the sheets, usually with a filler or sealant along the joint. ClickBina's metal roof leak repair guide lists lap joint, ridge and flashing resealing as one of the common repairs, where water tracks through the laps or under the ridge cap. If the metal capping itself has rusted or been damaged, the roof repair cost guide prices stripping the old capping and installing a new galvanised or colour-coated ridge.

What a proper ridge job should include

• A check from the roof space before and after the work, so the leak point is confirmed and then shown dry.
• Clear statement of whether the job is re-pointing or re-bedding, and over what length of ridge and hip.
• How loose caps will be treated, and how cracked caps will be replaced or matched.
• The pointing material to be used, with flexible pointing preferred over plain cement.
• A check of the tiles immediately below the ridge and of the underlayment at the top of the roof.
• Clearing fallen mortar and debris from the gutters and valleys at the end of the job.
• Protection of the rest of the roof while the work is done, so the repair does not crack tiles elsewhere.

What ridge repair costs

These are ClickBina's published ranges (indicative 2026, Klang Valley). Ridge work is priced by the length of ridge and hip, the access and the condition of the caps.

The roof repair cost guide also warns that a roof with widespread ridge failure across the full ridge run plus structural timber damage could exceed RM8,000, which is when a re-roof starts to become the better comparison.

Ridge repair or re-roof?

A ridge repair is a good investment when the rest of the roof is sound. It stops being one when the ridge is just one symptom of a roof that has aged out everywhere: brittle underlayment, rusted valleys and a new leak in a different place every monsoon. The roof tile leak guide's threshold is simple: if you are calling a roofer more than once a year, or the repairs are adding up towards a meaningful share of re-roofing, stop patching and compare a re-lay or a new roof. ClickBina's roof tile types guide explains how clay and concrete tiles differ when you get to that decision.

How ClickBina can help

WhatsApp us your job details for a quote: the house type, whether the roof is clay tile, concrete tile or metal, where the ceiling stain is and whether it leaks in every rain or only in storms. ClickBina is an experienced KL & Selangor contractor for whole-house refurbishment and trade coordination. We reply within the hour, the price we agree is a flat price with no hidden charges, and a site visit is RM150, waived if you go ahead.

Sources & methodology

• ClickBina roof tile leak repair guide — ridge caps and mortar, flexible pointing, walking damage, the re-roof threshold, repointing and tile prices.
• ClickBina roof repair cost guide — ridge cap re-bedding, the re-pointing worked example, metal ridge replacement and the widespread-failure warning.
• ClickBina metal roof leak repair guide — lap, ridge and flashing resealing on metal roofs.
• ClickBina wind-driven rain and roof tile types guides — storm-only leaks and tile materials.

How we estimated prices: every RM figure on this page is quoted unchanged from the ClickBina guides named above; they are indicative Klang Valley market ranges for 2026.