Lead codes determine the weight (and hence the thickness) of lead sheet. The number in the code simply equates to the weight in lbs, per square foot of lead. The importance of using the correct lead code: When installed correctly, the lead will often outlast the life of the building.
What is the difference between Code 3 and 4 lead flashing?
Lead CodeThickness (mm)Weight (kg per square metre)Code 31.32mm14.97kgCode 41.80mm20.41kgCode 52.24mm25.40kgCode 62.65mm30.10kg
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.
What is Code 3 lead?
Code 3 lead is the thinnest gauge of lead used in commercial roofing and is suitable for light applications such as soakers at the abutment..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.
How long can Code 5 lead be?
SKUleadcode5Custom MadeYesManufacturerBritish Lead
What Colour is code 3 lead?
Code 3 LeadCode 4 LeadCode 5 LeadGREENBLUERED
Can felt underlay be fixed with stainless steel nails?
Stainless steel nails can be used for installing cladding, fascia, securing tiles, slate and other roofing materials, and are particularly useful in industrial areas or coastal areas where chemicals and salt are present – where aluminium nails wouldn’t be suitable.What size should valley boards be?
The valley boards should be at least 225mm wide each side of the valley to allow for a 125mm wide open valley, with timber upstands set 150mm from the centre line of the valley and enough width left to support the ends of the tile battens.
What is the thinnest lead flashing?Code 3 Lead Flashing is the thinnest and lightest of all roofing lead. Measuring just 1.32mm in thickness, it is typically used to create lead soakers on slate or tile roofs.
Article first time published onWhat 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 Valley Code lead?
Lead CodeThicknessUsesCode 73.15mmFlat roofing, parapet and tapered valley gutters, pitched roofing, dormers, and bay roofs and canopiesCode 83.55mmFlat roofing, parapet and tapered valley gutters, dormers, and bay roofs and canopies
What is a roof Soaker?
A soaker is a weatherproofing product that has been designed to sit between a tile and an object that protrudes from the roof. … The soaker will be fitted underneath the tile but will rise up the edge of the object to prevent water from entering the roof space and causing damage to the roof structure.
How long should lead flashing last?
Lead flashing has a life expectancy in excess of 100 years if allowed to expand and contract freely.
Can I use patination oil on old lead?
If the lead has been laid previously, you will need to use a cleaning gel to remove any existing staining and dirt. Once cleaned, wash the lead of the gel, leave it to dry and then apply the layer of oil. The oil can easily be applied just with a soft cloth to rub the oil on to the clean, dry lead.
What does lead patination oil do?
Patination Oil is white spirit based surface treatment that prevents white carbonate from forming on the surface of newly fitted Lead Sheet and reduces the risk of staining to adjacent materials.
What code is blue lead?
Code 4 – BLUE The code 4 lead weighs 4lbs per square foot with metric measurements of 20kg per square meter which equates to a standard thickness of 1.8mm.
Does lead flashing change Colour?
A lead roof will usually start out as quite a dark shade, but will turn lighter over time due to its exposure to the elements. The colour change isn’t too severe; long term colour change varies between differing shades of grey, all of which are in-keeping with the familiar lead aesthetic.
How wide should a lead valley be?
The width of the lead flashing required depends on the width of the valley and whether the tiles are bedded with mortar and is generally between 300mm-600mm wide. A 100mm (4 inch) wide open valley would normally require an overlap of 100mm on either side of the valley so 300mm wide lead lead would be required.
What is the thickness of lead?
Lead Plate Thickness** Fractions of an InchDecimal EquivalentMillimeter Equivalent3/4″0.75”19.05mm1”1.00”25.40mm1-1/2”1.50”38.10mm2”2.00”50.80mm
How long does lead mate take to dry?
It’s fast setting too and will be dry to the touch in an hour. You can use it to seal around areas that could reach up to +150°C, so south facing exposures aren’t a problem. It won’t interfere with either water or oil based painted surfaces, crack or shrink over time.
How long is a roll of lead?
We supply Rolled Lead Sheet in any width from 150mm to 1580mm in Codes 3,4 and 5 and up to 1275mm in Codes 6,7 and 8 in standard roll lengths of 3 and 6 metres.
How thick should valley boards be?
Valley Board Construction In all cases valley boards should be fitted. Valley boards may be inset or continuous over the rafters. Where they are inset, they should be a minimum of 12mm thick and supported on bearers of 50 x 25mm or similar and set at a depth to suit the thickness of the Valley Board.
Do roof valleys need mortar?
It is an area where water is directed towards, rather than away from, therefore correct detailing and construction is essential. A common misconception is that the mortar bedding is there to prevent water access. However, in reality, a valley should work correctly even without mortar.
What is a slate nail?
Slate Copper nails are the preferred option for use in natural slating. They are available in a wide range of lengths and shank sizes to accommodate different fixing methods and slate thicknesses. Copper clout nails are made specifically for the job and comply with the current BS1202 part 2 for their manufacture.
What is a shank nail?
What is a Ring Shank Nail? Ring shank nails are those with ridges or spirals around the shank; those little ridges can increase the holding power of the nail by 40 percent or more. The ridges on the ring shank nails act as little barbs or wedges that lock the nails firmly into the wood once it’s driven.
Do they make ring shank roofing nails?
Ring shank roofing nails, sometimes called deformed shank roofing nails, are nails with ridges or grooves along the shank, so it is easy for holding shingles in place. They can made of galvanized, copper, stainless steel and aluminum. They are perfect for nailing ridge straps and flashing cleats.
What is milled lead?
Milled lead is manufactured by passing a solid slab of lead back and forth on a rolling mill between closing rollers. Machine cast lead, on the other hand, is produced by dipping a rotating water- cooled drum into a bath of molten lead.
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.
Is there an alternative to lead flashing?
Many recognisable big-name brands offer alternatives to lead flashing, including Ubbink, Icopal, Deks and Cromar. There are many options to choose from so it’s worth doing some research.
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.
