Counter-flashing (or cover flashing, cap flashing) is a term used when there are two parallel pieces of flashing employed together such as on a chimney, where the counter-flashing is built into the chimney and overlaps a replaceable piece of base flashing.
The most common method of fixing lead flashing is to make a lead bung or ‘chock’. This is made by rolling up a 25mm or less strip of lead into an oval shape just wider than the mortar chase you are fixing, then driving it below the surface of bricks to form a wedge.
Secondly, how much does it cost to replace flashing? Replace flashing around chimney: $500 – $750. Roofing repair labor: $40 – $70 per square. Least expensive asphalt shingles: $60 – $80 per square. 3-tab asphalt shingles with roofer labor: $200 per square.
Beside this, what do lead flashing codes mean?
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. When installed correctly, the lead will often outlast the life of the building.
Do I need roof flashing?
Flashing is critical to certain areas of your roof — namely, the places where the roof surface meets a wall (sidewalls and front walls), the low points where two roof slopes meet (called valleys), roof protrusions (bathroom/kitchen vents, skylights) and the roof’s edges (rakes and eaves).
How long should lead flashing last?
Is lead flashing expensive?
Lead apron flashing is the easiest job but step flashing is much more difficult as it requires cutting in angles to match the slope of the roof. But the most expensive part of any lead replacement job is the cost of the lead itself, closely followed by the access up to the roof which often involves scaffolding.
What is roof flashing made of?
Although roof flashing is occasionally fabricated from plastic, roofing felt, or rubber, it is usually made of rust- resistant metal—galvanized steel, aluminum, or copper. Galvanized sheet metal is most common, but aluminum and copper find occasional use in specialty situations.
What can I use instead of lead flashing?
Wakaflex is lead flexible, adhesive roof flashing that can be used instead of lead in most modern roofing applications. It’s available in a range of colours to suit the roof you’re working on. EasyFlash is a lightweight flashing that can be used on almost any tile or slate roof to seal abutments.
Is lead flashing still used?
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.
What is a lead flashing?
In modern buildings, flashing is intended to decrease water penetration at objects such as chimneys, vent pipes, walls, windows and door openings to make buildings more durable and to reduce indoor mold problems. Metal flashing materials include lead, aluminium, copper, stainless steel, zinc alloy, and other materials.
How wide should lead flashing be?
Lead Flashing Codes and Weights It is 1.8mm thick, as it should be, and 240mm wide.
What is flashing tape used for?
The invention of flashing tape has done much to simplify a wide range of building projects. This strong, waterproof adhesive is used during construction to tightly seal off the gaps between windows/doors and the exterior of the house. Many roofers also use flashing tape to seal cracks before securing shingles.
What is Code 5 lead flashing used for?
Code 5 lead flashing rolls can be used for anything from tapered valley gutters and flat roofing through to pitched roofs, canopies and vertical cladding.
What is a lead soaker?
Lead Soakers. Traditionally, lead soakers are placed in between each line of tiles or slates, in order to minimise the risk of leaks and enhance durability.
What does 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 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.