Which is thicker code 3 or code 4 lead?
Code 3 is 1.32mm wide and weighs 14.97kg per square metre (Thickness to BS EN12588 tolerances of +/- 5%) but in historic buildings or in buildings with more severe weather exposure it may be advisable to use the slightly thicker code 4 lead.
What does Code 4 lead flashing mean?
Code 4 lead flashing is used for a range of roofing applications, including soakers, flashings, and vertical cladding. It’s 1.8mm thick and weighs 20.41 kg/m2. This makes it a malleable and workable product that can be used easily in a wide range of settings.
What is lead code?
The lead code refers to the thickness of the lead used to construct your roof, and choosing the wrong lead code for your construction will result in issues further down the line.
What width lead flashing do I need?
The minimum recommended depth for lead roof flashing to be set into a chase is 25mm, but remember that this is roughly a quarter of the width of the remaining mortar. This is fine unless the brickwork becomes unstable, which may result in a need to reduce the depth.
What is Code 5 lead flashing used for?
Code 5 roofing lead is suitable for applications such as flashings, valley gutters, porches, dormers, cladding, box gutters, flat and pitched roofs. Important: The recommended maximum size for each thickness or code of lead will vary – the thicker the lead, the larger the laid piece can be.
Why is lead used for flashing?
Lead possesses a number of attributes that make it ideal for use in flashing. It is inherently resistant to corrosion, making it highly durable in exterior settings exposed to the elements. Another significant benefit of lead is its malleability.
What is the thickness of code 8 lead?
Thickness: 3.50mm | Approx. Weight: 40.26 Kg/m² The highest profile available, code 8 lead is perfect for use on flat roofs where resting water is common. As before, 2500mm increases to 3000mm and 675mm increases to 700mm.
What’s the difference between Code 3 and 4 lead?
Realistically, anything other than this will require a different code. Code 4 lead has a much wider range of applications than code 3. Other than also being suitable for use as a soaker, it can also be used as: Flashing, pitched valley gutters, parapet, box and tapered valley gutters, dormers as well as vertical cladding.
What’s the thickness of Midland machine Cast Lead?
Midland Lead’s machine cast lead sheet is available in codes 1-8 (code 1: 0.44mm, code 2: 0.88mm, code 3: 1.32mm, code 4: 1.80mm, code 5, 2.24mm, code 6, 2.65mm, code 7: 3.15mm and code 8: 3.55mm) and any thickness in between, while rolled lead is available in codes 3-8, and sandcast lead in codes 6-8.
What happens if you use the wrong thickness of lead?
Using an incorrect thickness can result in performance failure, causing damage to the building. The choice of lead code depends entirely on the type of project you have planned and on where the lead is being used.