A roof verge is a key aspect of any roofing project and neglecting having a dry verge system could potentially have a hugely negative effect on the house.
Firstly, what is a verge? A verge is the part of the roof where the tiling ends and meets the gable. In most traditional circumstances, the verge is attached using mortar and this makes it waterproof. Being water-resistant is vital considering that rainwater is likely to run off the roof. However dry verges are a particular type of roofing system and we will explore what it is and how to fit it in this article.
What is a dry verge system?
A dry verge system, which is also known as dry-fixing, is a roofing system that uses caps or verges that mesh and attaches to the roof tiles. This offers protection to the tiles as well as keeping them stable. The dry verge offers security and prevents any insects or moisture from reaching the roof space.
Dry verges tend to be preferred to traditional wet verges due to their longevity. Mortar is used to fix typical roof verges as it offers protection from water however, unfortunately, they are not very durable. Heat and expansion can result in damage to the mortar and cavities can appear which will lead the mortar to deteriorate. Consequently, wet verges tend to need more maintenance and often this can mean higher costs in the long run.
Why use a dry verge system?
Dry verge systems have all the benefits of traditional roof verges with several major advantages. The dry verge is commonly made from plastic making it more durable and long-lasting as well as minimising the need for repairs. Moreover, with a uniform aesthetic on the top of your house, you can guarantee that it will look clean and tidy which could increase the overall value of your home. Moreover, when purchasing a dry verge system you should look for options that have in-built ventilation. Having air constantly passing through the system can offer additional protection against damp and moisture.
How do you fit a dry verge?
A further benefit of having a dry verge is how simple it is to fit. Dry verges are often quite different and therefore we’d strongly urge you to follow the manufacturer’s instructions when installing It, however, we have also put together a straightforward guide for you.
An underlay will need to be fitted initially. If so make sure the tiling battens on the roof extend beyond the bargeboard or a gable wall by between 20 and 40mm. The battens must be checked to ensure they haven’t rotted and deteriorated. If so, you might want to consider fixing a batten strip on the verge itself.
Using the batten end clips attach them to each of the tile battens. This makes the setting more stable when the verge units are fixed. Using the eaves closure, fit it over the first tile to prevent any water damage or insects from infiltrating the roof. Once completed, fix the eaves closure unit to the bargeboard.
Organise your verge units and using the first one clip it until it is over the eaves closure unit and then move it along until it lines up with the edge of the roof tile. Once done nail this down onto the batten end clip.
Take the second verge and position it until it clips into the first verge, ensuring that it lines up with the end of the tail before being nailed to the batten end clip. Repeat these steps until your reach the peak of the roof.
Complete the process with an end cap or if you prefer a block end and screw them in as instructed.
Traditional wet verge roofing systems can still be used and fitted. They will provide good support for the roof and their waterproof nature means they will carry out their function well. However, a dry verge is a great modern method of adding stability and longevity to your roof and consequently, we would highly recommend investing in this piece of technology. If you have any questions or concerns regarding the best products to buy or the process behind fitting the dry verge system please contact our team. The BC Profiles customer service team are always happy to provide guidance and answer queries and we can be contacted throughout the day.