2nd Blackburn Storm Damage Completion
All the works at Whiteburk Blackburn are now completed
Following our initial consultation with the home owner following the emergency call out, the scaffold instalation was undertaken by Mitchell's Scaffolding Ltd this gave us the chance to fully inspect the damage, unfortunatly it was noted that the damage the roof had sustaind was greater than the home owner originaly thought quite a number of ridge tiles had been dis lodged but had fortunatly not been lifted. they had begun to slide down the pitched roof we also noticed that approximately 20 tiles had been damaged damaged by uplifted existing roof.
the home owner decided rather than re bed the original hip and ridge tiles he wanted a dry ridge system that would not need to be beded in morter Dry ridge, rather than mortar for a bond uses a dry fix system using screws – often stainless steel – to attach clamps between the joints of every ridge tile, clamping them to the roof. Beneath these screws are waterproof unions that catch any small amount of direct rainfall and disperse it sideways back onto the roof .
Although mortar has been used in roofing for hundreds of years creating a means of fixing and weather proofing at junctions such as ridges and verges. Mortar certainly does the job, but mortar has a limited lifespan, requires regular maintenance due to natural deteriorate. Secondly mortar is susceptible to cracking because there is an amount of natural movement in any building, More so where the roof passes over solid masonry walls. Once this happens, the ridges, hips or verges can become dislodged by high winds, and any cracks or defects alow your roof to become susceptible to water ingress. This systems does away with the need for mortar. and have a number of advantages over cement mortar:
These systems remove the need for regular maintenance of the roof. Over time, mortar can succumb to frost damage and building movement. When this occurs, repairs can be quite costly when you eliminate mortar from the roof you can virtually eliminate this type of maintenance. The system allows for the natural movement within a roof to take place without damaging the ridge and hip fixings. It provides a way to 'mechanically' fix ridges and hip tiles, greatly reducing the risk of storm damage. It generates roof space ventilation at the ridge and hip so helps control condensation in the roof space. It Means that rain will not cause mortar to stain the roof and no morter means no worries about frost damage happining if your roof need work in the colder weather.
1. Ridge Systems
Dry Ridge systems come in a variety of designs but offer a similar level of performance. They are designed to secure the ridge tiles which are located at the apex of a roof. When using dry ridge systems the mortar joints between ridge tiles are replaced by plastic inserts, known as unions, that create the visual appearance of a mortar joint but have a hidden weather proofing system that carries away the water.
The next significant component of a dry ridge system sits between the ridges and the tiles of the roof slope. This part of the system usually includes a ventilated strip that ensures moisture laden air is vented from under the tiles. The interface with the ridges and the tiles can be handled in two ways. The first method uses plastic inserts following the shape of the tiles, the second uses an adhesive roll which is corrugated and stuck down to the tile surface. Whilst the 'roll' systems are the most affordable, the profile system looks the best and offers an edge when it comes to longevity.
2. Hip Systems
A hip is the external junction between two sloping roof faces. As with ridges the traditional method of weather proofing this type of junction is usually to use ridge tiles which are then secured on a bed on mortar.
Dry Hip systems eliminate the need for mortar and provide a more secure and maintenance free hip detail. The systems follow a similar design to dry ridge systems. The one key difference is when curved or profiled tiles are used, the dry hip system will rely on some form of tray to provide support along the length of the hip line. This tray helps ensure the roofer creates a neat hip line, without it the ridges would be sitting on the undulating tiles below. This would create an uneven hip line