Does a roof need lead flashing?
HR ROOFING SPECIALISTS “Lead flashing is essential where slates/tiles either meet a wall/chimney to ensure a water tight roof. Soakers will do their job but the lead work is needed.
Why is lead still used on roofs?
A good quality, lead roof can last as much as three times longer than other roofing materials. This is the reason why many historic buildings have lead roofing as it is reliable and durable which also makes it a cost-effective option in the long-run.
What is the most appropriate material to use when flashing a roof?
Lead is one of the oldest and most durable materials used for flashing, providing long-lasting protection from water. It is soft and easy to bend and remains strong despite expanding and contracting perennially with changes in temperature. In fact, lead is believed to last for more than 200 years.
How long do lead roofs last?
Lead has been used for roofing for centuries and is one of the oldest flashing materials. It is durable and soft enough to be formed into complex shapes. Lead roofing and flashings can last over 200 years. Generally speaking, lead roofing or flashing that is in good shape may safely be left in place.
Is it safe to use lead roofing and flashings?
Generally speaking, lead roofing or flashing that is in good shape may safely be left in place. Lead can be used safely if worker exposure is monitored and lead is handled properly to avoid skin contact, ingestion, and exposure to lead dust and fumes.
What happens when lead is removed from roof?
Over time, it will break down and could pollute the water that is accumulated through lead flashing. The lead contained in the flashing can start to flake if it is not maintained.
What kind of material is used for roof flashing?
Lead is a soft, easily worked metal, which can be easily moulded to various shapes without cracking or splitting. Now, due to cost, and because of concern about lead contamination, materials such as zinc sheet, rubber, plastic, and even waterproofed impregnated paper, are also used.
What kind of lead is used for lead flashing?
Flashing is usually done in code 4 lead. Roofs and gutters however, where there is much greater movement and potentially wear and tear, are usually done in a very thick code 8 lead. You can see from the rolls of lead in the images on this page that they have tape wrapped around them. This tape is of different colours.