The ridge is the point at which two sections of a sloped roof system meet. Traditionally the method of pointing a roof would be to use a mortar mix that bonds the ridge tile to the roof.
Repointing is a method whereby the loose or broken mortar is scraped away and replaced with new. As a result, homeowners typically request this work to be carried out when the roof tiles still have life in them but the ridge has begun to fail.
Dry Ridge System
Because technology has evolved and so have roofing methods. A dry ridge system is a unique method of fixing ridge or hip tiles to a roof without the use of the traditional mortar mix.
Furthermore, Dry ridge fixing unlike mortar uses screws usually stainless steel to fix clamps between each joint subsequently clamping them to the roof below. The screws are designed in such a way that any small amount of rainfall is dispersed back onto the roof.
As a result, Dry ridge fixing has become so popular it has been introduced into the latest building control requirements for new builds under BS 5534 although fixing existing roofs are exempt along with some listed and period properties.
- Reduced risk of storm damage
- Nothing to maintain or degrade
- Allows for movement
Repointing a Roof
Roof pointing and bedding are essential parts to the structure of the roof and if traditional methods are used require regular maintenance to ensure your roof stays in its best condition.
Roof Bedding… The cement mortar mix that holds the roof tiles in place. Over a period of time and exposure to all weather conditions, it will incur natural wear and result in loose tiles and broken mortar. If the bedding is not well maintained it can easily crack and fall away, therefore, leaving your tiles loose and exposed and can easily become a danger if they are to fall.
When having your home roof repointed it is recommended to have the tiles re-bedded at the same time. A new layer of cement mortar will be applied along with a new layer of flexible pointing material to increase the adhesion between the ridge and roof and further provide a dual layer of protection over the bedding to extend the life of the mortar bedding.
Roof pointing is a secondary layer of mortar which is applied over the top of the bedding to create a stronger seal and avoid any dirt, dust or water ingress. Traditionally roofs would be pointed with cement mortar but have recently been changed and been replaced with flexible pointing compounds. Flexible pointing expands and contracts with the changing weather conditions which enable it to move easier and avoid any cracking which ultimately leads to leaks that can damage your home.
Repointing a roof FAQ's
It is widely recommended by roofing professionals that your home is repointed at least every 10 years.
The cost would vary depending on the size of the roof that requires repointing along with the number of ridge tiles. It could also require the bedding of the ridge tiles to ensure stability and longevity in the roofs life. We recommend having a roofing professional such as GNR roofing take a look for you and provide you with an estimate to complete the works required.
If we’re talking about common roofing jobs like pointing a chimney, laying ridge tiles or flaunching the top of a chimney,We would recommend a 3 : 1 mix (3 parts sand to one cement). This ratio of sand to cement is ideal for exposed areas such as the roof, without being stronger than the bricks or ridge tiles you are working with.
Contact us about pointing
Converting a traditional roof to dry ridge
Most noteworthy the answer is Yes, this can be done. If you would like to convert your existing mortar based fixings. Then a brand new dry ridge system it is actually easier than you imagine. If your existing bedding is old and failing it could potentially be the ideal candidate for replacing as the tiles will be easier to remove. However, if they are not loose or failing it may not be worth doing and risk damaging the tiles.
Can I check to see if it would be required? Certainly, there are some simple signs that would give you a good indication such as;
- Bad weather has damaged your roof
- You have a leak from your roof
- The roof has not been maintained regularly
- Loose or unsafe ridge tiles