The Dry Ridge System
This article provides a review of the installation, benefits and costs for replacement or repair of a dry ridge system.
Do I need a Dry Ridge Roof System?
In one word, yes. A dry ridge roof system is a method of fixing ridge tiles to your roof. While there are two methods – traditional mortar and dry ridge, each with their own benefits dry ridge is now a building requirement for all new roofs since BS 5534 was introduced. This article will take a look at the installation, benefits and costs for roof replacement or repair.
What is a dry ridge system?
A dry ridge system refers to a method of installing a new roof by mechanically fixing ridge tiles, or hip ridge tiles, to a roof.
The process does not include the traditional sand and cement mortar, instead it relies on a dry fix system that usually uses screws.
The stainless steel screws attach clamps between the joints of the dry ridge tiles, thus clamping them to the roof. Underneath the screws are also waterproof unions, designed to catch rainfall and disperse it sideways to reduce the risks of roof leaks during heavy rainfall.
What is the traditional method?
Traditional sand and cement have long been used by roofing contractors to fix tiles to a roof. Today, most buildings benefit from the modern dry ridge roof system, but the likes of historic properties preserve their heritage with traditional mortar.
Traditionally, roof tiles were attached with mortar, which can, subsequently, be affected by weak mixes and environmental and weathering issues. For instance, traditional mortar does not cater to the natural movement of a house, thus affecting the structural integrity of the roof. Due to this – and many other factors – concerns were raised by the UK building authorities on the longevity, meaning more roofing contractors started to use dry ridge systems.
Benefits of a dry ridge system
As mentioned above, a dry ridge roof is now a building requirement for any new properties in the UK. TRG The Roof Group use the dry ridge system for a number of reasons.
Maintenance
Dry ridge systems retain their quality over the years, as they are adverse to many environmental factors. For instance, the dry ridge tiles will move with the natural changes of the property, thus keeping the integrity of the roof. However, as with mortar systems we do suggest keeping an eye on your roof. A quick check, from the ground, a few times a year should help you identify any signs of wear and tear.
Easier to install
The process for installing a new roof when it comes to the dry ridge system is significantly easier than the traditional mortar method. It’s hassle free and, due to using fewer materials, the project is quick and painless.
Ventilation
Ventilation is critical for any roof to ensure there is no build up of condensation, which can later result in damp. A dry ridge system provides discreet ventilation, therefore avoiding any harmful build-up and unnecessary costs to put right.
Dry ridge system vs mortar
We have touched on the differences above, but there are major variations in installation, maintenance and cost;
Wind
Over the years, many external factors – out of your control – can affect the bond of your mortar roof tiles. Therefore, they can eventually to blow off the roof and cause further damage in adverse winds. However, if installed correctly, dry ridge roof tiles will not blow off under normal, windy conditions.
Flexibility
If there’s one thing we can say about traditional mortar roofs, it’s they lack flexibility. Due to their underlying construction Roofs move as a result of vibrations from roads, train tracks and even runways, as well as natural expansion and contraction. Therefore, your roof must cater for flexible movement. Dry ridge roof tiles offer this movement and will ensure the structure of your roof, unlike mortar.
Costs
A traditional mortar roof will require more roofing maintenance over the years, due to the mix degrading. Therefore, you will have to pay more over time to ensure the roof is maintained, whereas a dry ridge system lasts longer.
Can I convert my old roof to dry ridge?
Yes! If you would like to convert your new roof to a dry ridge system, it’s a simple process. If the existing mortar is ageing, roofs are an ideal candidate for this service. If all of the mortar is loose enough, the roof tiles can be removed without damage. However, if they are not, it may not be worthwhile considering whole roof replacement.
How do I know whether it is required?
- Loose or unsafe ridge tiles
- Your roof is leaking
- The ‘felting’ has degraded over time
- Wind has damaged your roof
- A roof replacement is required
You can get in touch with our team immediately via our contact form or give us a call on 07717 811560 and TRG – The Roof Group will provide a free no obligation quotation.