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Leadwork
Lead has been used for over 150 years for domestic, commercial and industrial applications. Naturally, the thicker the lead, the longer it lasts - and, of course, the more expensive it becomes. Lead is measured in weight, from Code 3 (like a thin paper) up to Code 8 (like a thick cardboard).
Your Findley Roofing estimator will be able to demonstrate the thickness of lead required on your property as governed by current building regulations.
Flashings
Most flashings are done with either 9, 12 or 15” lead and are of Code 4 standard as of 2018, this is an upgrade from the past when it used to be Code 3. Perished flashings are one of the major causes of leaks on domestic, residential properties. Lead flashings are also under attack in high winds.
Code 4 lead flashings should last for around 60 years.
Box gutters
Box gutters must be done in Code 5 lead. Often, mop handles or welding techniques are used to join large lead pieces.
Lead bay tops
Code 5 lead is often used for lead bay tops due to its durablility and increased thickness. Life expectancy of a lead bay top can be 80 to 100 years.
Again, mop handles and welding techniques can be used to join large sections of lead together.
Before the invention of single ply membranes, lead work was a popular choice for all bay window tops.