Bs en12588 replaced bs1178 in august 1999.
Flat roof lead flashing detail.
Our basic fitting guides are designed to assist installing rolled lead sheet in a range of roofing applications including flashings valleys gutters and flat roofing.
When fitting cover flashings to a flat roof like the.
To build a flat roof you ll want to have a thorough understanding of how the process of constructing the flat roof works and the different methods available.
Clip strength is increased the closer the clip is fixed to the free edge of the lead sheet or flashing.
Horizontal flashings should provide weathering to a minimum of 75mm above the intersection with the roof.
Where a pitched roof abuts the wall at an angle.
Roll detail at drips and abutments 41 flat roof roll and drip intersections 42 pitched roof joints and fixings 43 pitched roof intersection with valley 44.
Although fixing near the base of the clip is not recommended for.
The following information conforms.
Open valleys have metal flashing to protect this critical area of the roof.
Where a flat or pitched roof over an enclosed area abuts a wall or a balcony abuts a wall cavity trays should be linked to the flashing to prevent water penetrating into an enclosed area.
The edge of the roof has thin metal flashing that helps water drip off the roof without damaging the home or causing a leak.
Click pic to enlarge the video below will show you how to fit lead roof flashing like the ones seen in the picture above.
Insulation for the warm flat roof only the basic construction process.
Cad details document name pdf dwg download all cad construction details 37 1 mb 3 4 mb mc01 identification of roof areas 694 kb 167 kb mc01a single layer underlayment 678 kb 302 kb mc01b double layer underlayment 711 kb 322 kb mc02 vent pipe flashing 626 kb 349 kb mc03 valley.
Lead sheet is a soft and malleable metal which means it s an excellent roofing material because it can be formed and shaped to suit any detail.
Flat roof coverings 22 window flashings 23 contents note.
However it is important to follow the basic principles of sizing and fixings as indicated in the rolled lead sheet manual to reduce the effects of fatigue cracking or creep.
Apron flashings if you are new to roofing or fitting roof flashings this really is a bread and butter place to start master this and the slightly more difficult flashings like step flashings will seem a lot easier.
That will help you remember certain factors and details to build the best possible flat roof.
Hi as long as the lead flashing has been fitted correctly ie the correct code and no longer than 1 5 mtrs in length with at least 150mm overlap the lead flashing will last a life time also by doing this the lead can expand and contract and prevent any splitting in the future a full inspection of the flat roof will determine whether or not you need to replace.
