STRUCTURAL COMPONENTS


nleae enefits


Water ingress may damage your property or cause wet and dry rot. Nick King from Klober explores the reasons behind choosing lead-free ashings for maintaining a watertight roof, and outlines the installation considerations to be aware of


Advancements in lead-free flashings allow roofing contractors to complete high-performance roofing projects with ease


T


he roof is often overlooked in the early stages of a self-build project, resulting in last-minute decisions on critical components that can make a big difference. Flashing is one of those areas.


ROOF FLASHING Breakpoints could leave a property vulnerable to water ingress if they are not sufficiently waterproofed. This often happens through tiles’ vulnerable intersections, such as chimneys or valleys. If these intersections are inadequately sealed, moisture may enter your home or building. This is where a roof ashing detail is essential. Roof ashings can be installed to coer oer profiled tiles and slates, closing off dry valleys, sealing solar panels, rooights, for changes in roof


nov/dec 2022


pitch, on abutments and chimneys. The main purpose of installing ashing is to maintain a watertight roof.


LEAD-FREE


ts durability and waterproofing properties make lead a popular choice for roofing solutions on residential and commercial properties. You’ll often see it on the roofs of historic buildings and in conservation areas to preserve appearance. While lead has a place in certain areas, there are numerous benefits associated with choosing lead- free ashing for other applications. In terms of safety, the use of lead-free is less likely to be a health hazard for those working with this material because it is non-toxic. What many don’t realise is that specification reuirements can ary


from one roofing ob to the net. Lead- free ashings can offer a significant point of difference here. For projects which do not specify traditional lead, lead ashing substitutes made without lead can offer a great alternative.


Over the years, lead-free has become


more popular for a few reasons. The first is that, despite recorded lead-theft declining, the threat still remains. When it happens, this leaves the roof vulnerable, as well as being inconvenient and costly to replace. However, there is no scrap value to lead alternatives so would-be thieves won’t look twice at a roof with this solution. Secondly, the speed and ease of installing lead-free ashings is another maor benefit. This is in part because they are extremely malleable and easy


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