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805K views • 8 years ago. •. The basics of installing lead flashings... Step flashings, chimney flashings, cover flashings, pipe flashings and abutment soakers.
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- What Is Lead flashing?
- Who Fits Lead flashing?
- What Does Working Or Dressing Lead Mean?
- Why Is Lead Flashing used?
- What Do The Various Lead Codes Mean and Why Are They used?
- Lead Flashing and Colour Codes
- Lead Flashing Codes and Weights
- What Are The Different Codes of Lead Used for?
- What Is A Lead Soaker
- What Is A Lead Valley?
Flashing is a term applied to any thin strip of material used to prevent water ingress into a property. Before the introduction of lead flashing, which now forms most major applications, a number of methods were employed. The most common of these was to mix lime mortar to cover the joint where two surfaces met. Another commonly used method was to u...
Is it a plumber or a roofer who fits my lead flashing? This is a question we get asked a lot. The name plumber comes from the Latin noun Plumberiumwhich translates as a worker of lead. Years ago all plumbing pipework was made from lead and so lead work and plumbing became synonymous. The Latin for lead is Plumbum and it was used in Roman times for ...
Dressing lead is to make sure the lead is fitted as close to the surfaces it covers as possible. Lead is very pliable and can be stretched to make sure it covers some very odd shapes. This stretching is done by using special tools called Lead Dressers. Lead can be worked into the most complicated of shapes and some lead dressing can almost be descr...
When any part of a roof meets a vertical surface or any kind of abutment as with an extension, roof window, a dividing wall between two terraced properties or between a property and a conservatory, there is potential for the joint between the surfaces to leak and it is this joint needs to be sealed against leaks. Lead is usually used for this becau...
British Rolled Lead must be supplied in accordance with British Standard 12588. Historically it is coded, or labelled, into various weights per square foot. These days the codes remain the same, but metric measurements have been applied and the results can be seen below. In imperial measurements, Code 3 lead weighs 3lbs per square foot, code 4 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. This is a deliberate coding system used to identify lead rolls and lead sheets at a glance. The different colours refer to the different codes and these can be seen in the table below.
Lets have a look at how the codes for lead work and how they have survived the metric changeover! The roll of lead shown in the image above is Code 4 lead. This means is should weigh approximately 4 pounds (lb) for every square foot. It is 1.8mm thick, as it should be, and 240mm wide. It’s total length is 3m and we can see from the label it weighs ...
Code 3– is pretty much used exclusively for soakers as it is comparatively thin and too much movement in a roof could make it split if it were used as a roof covering or flashingCode 4– is used for soakers sometimes, lead flashings, lead roof valleys and lead hip flashings. It can be used as cladding also for small roof or wall sectionsCode 5– is used for all the above, although rarely for soakers, and is used for valleys and pitched gutters where the water flow is largeCode 6, 7 and 8– are all used almost exclusively for roof coveringsLead soakers are squares, or rectangles of (usually) code 3 lead which are fitted to slat roofs or plain tile roofs where the tiles butt right up to a vertical abutment. Each soaker sits on the top of the last slate or plain tile and the next tile or slate is laid on top. Half the soaker is folded up the wall. The soakers then form a flat gutter be...
Where one roof meets another at right angles, such as in the addition of a dormer window, a joint is formed between the two roofs. This joint is called a valley. This valley can be made in lead before the tiles are laid. Lead valleys can be made with Code 4 lead but the thicker code 5 is much better as a great deal of water, and movement, occurs in...
Jan 13, 2014 · So I need to run my flashing down the garage roof, through 90 degrees and along the extension. But I can no find out for the life of me how to do an outside corner in lead. I am aware that you can buy pre fabricated corners and also lead can be welded, but I want to do this in the traditional manner.
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What are lead flashings used for?
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How do you install a flashing?
Jul 24, 2019 · Used at penetrations in roofs such as chimney stacks, dormer windows and parapet walls, lead flashings are installed to maintain a watertight roof and reduce water ingress and internal internal mould build-up.
- Remove mortar. When fitting flashing where a flashing product hasn’t previously been installed, the mortar will generally need to be removed from brickwork – particularly when installing flashing between a wall and a roof, above windows and doors, and other situations involving brickwork.
- Measurements. Measure the distance from the chase depth (the amount of lead that goes into the brickwork), the distance from the chase to the join in the roof, and then the distance from the join across the roof covering or the second surface.
- Cut lead to size. Now cut a piece of milled lead to around 1.2m long, with the measured distance as the width of the lead. Any longer than 1.2 metres long and the lead will be harder to shape and more likely to split over time.
- Shape the lead flashing. To fit the lead flashing onto the roof, lead dressing tools can be used. A lead dresser is used to smooth out any wrinkles or folds within the lead sheet, bossing mallets and lead chase wedges are used to drive the lead sheet into the desired shape, ensuring it fits right into the brickwork and corners, lead bending tools are used to bend the sheeting into the right shape, and lead bossing tools are used to shape corners and work the lead around any structures.
May 20, 2016 · Step by step counterflashing: Cut a chase in the brickwork 6 inches above the flat of the roof wall intersection. Grind the channel about an inch to an inch and a half deep into the brick mortar joint. Use sections of lead about a meter or a meter and a half long top work with.
