We recently carried out an extensive roofing job in Marylebone, Central London, which involved a complete refurbishment of the building. The roof had three large pitched sides to be finished in natural slate with a perimeter box gutter and two lead dormer tops, as well as a Mansafe anchor system.
We started by installing a Sika Liquid Plastics base & top coat to the perimeter box gutter, this is a seamless membrane and one of the best waterproofing products, it also came with a 20 year guarantee.
The main steel/timber was built by the main contractor. We then laid Tyvek Felt onto the timber, this is a membrane the timber battens sit on for ventilation and extra waterproofing. We then put a counter batten on top of this for free flowing airway and further ventilation. A cross batten was laid on top and this was for the slates to be fixed to.
We laid a natural 20ʺ x 10ʺ Spanish slate on top of the batten. Spanish slates are a high quality slate, also used because of their attractive aesthetic finish.
We then lead cladded the sides and lead bays on the two dormers. Lead is a long lasting traditional material that has been used on roofs for centuries. It has great malleability, can be moulded to any shape & is highly resistant to corrosion and is non-combustible. Lead hips were also fitted to the corners of the roof where the slates met, this was to stop any water ingress and again is used as it’s a long lasting durable material. We also lead capped the surrounding perimeter parapet walls, as the bricks were very porous and had potential for water ingress. Timber ply was fitted to the brick and then capped in code 5 lead.
View our Services page for more information on all the different types of roofing we provide.