Hambleside Danelaw’s range of GRP dry fix valley troughs have been keeping UK roof junctions durable and sound for 20 years. Backed with a 30 year service life guarantee and BBA Certified for peace of mind and quality assurance, these valley troughs have maintained their unique profile, standing the test of time.
Designed to provide hidden water gulleys at the roof valleys, these troughs are an ideal alternative to traditional lead. The popularity in lead alternatives is ever growing and manufacturers are responding to this demand.
Working with lead
The World Health Organization has identified lead as 1 of 10 chemicals of major public health concern. They state that “Lead is a naturally occurring toxic metal found in the Earth’s crust. Its widespread use has resulted in extensive environmental contamination, human exposure and significant public health problems in many parts of the world.”
The EU has already opted to ban or restrict the use of lead in many contexts from petrol to paints and even electronic equipment. Some European countries have banned the use of lead within the construction industry while Denmark has completely banned the import or sale of products containing more than 0.01% of lead compounds.
Although many clients, specifiers and some local authorities are now discouraging its use in roofing, the UK does not yet appear to be moving to a complete ban.
There’s no harm in using alternatives to lead
Innovation in construction materials and methods is key to the future of our industry. In a time when the skills shortage is a real threat, simplicity of installation on-site delivers cost benefits and value. The popularity in lead alternatives and indeed alternatives for a wide range of metals is ever growing and manufacturers are responding to this demand.
Modern materials offer lightweight solutions, easier and safer to handle at heights, preformed options to speed up installation and increasingly can offer a long service life at a far lower cost than traditional metals, such as lead, zinc and copper.
A GRP solution
The most common replacement material used for roof flashings is glass reinforced polyester, widely known as GRP. This lightweight and durable material is simple to install and can imitate the appearance of lead.
As well as the similar aesthetics, GRP has none of the associated health and safety risks that arise when working with and handling lead. Having no scrap value and deterring theft minimises the risk of further damage and losses on site during and after installation.
Due to its non-toxic properties, GRP can be used wherever there is a requirement to recycle water. It does not produce harmful run-off, or streak or stain other building finishes, which makes it suitable for grey water systems. This is an important factor to consider with the current move toward ‘greener’ methods and materials with the bigger picture of a warming environment and the predicted increase in yearly droughts and water shortages.
Hambleside Danelaw’s GRP flashing range, including dry fix valley troughs provide the ideal solution to lead options.
For a healthy roof, use GRP - a lead alternative material.