When the lead rests directly onto sawn timber on a steeply pitched roof and non resinous timber has been used underlay may not be necessary.
Weight of lead roof.
Pure lead products maunufactures quality 2 2 5 3 and 4 pound crimped lead roof flashings.
Made from 98 recyclable material sheet lead is the most malleable of common metals and can be easily shaped formed bend and cut to suit a variety of applications including lead roofing and flashing.
On a low pitch roof where the lead isn t free to move it is more likely to buckle on expansion or stretch as it contracts.
To minimise this all rolled lead is manufactured to meet bs en 12588 with different lead codes thicknesses having different applications and weight.
The temperature of lead on a roof varies constantly.
The weight of roofing constructions above the truss rafter may be estimated with the calculator below.
Pipe sizes 2 1 4 to 6 3 4 call us.
Our sizing guide provides the maximum recommended sizes for a range of common lead sheet applications.
Mars metal provides sheet lead conforming to federal qq l 201f and qq l 171e and astm b 29 and b 749.
None asphalt roll roofing 1 1 lb m ft 2 5 4 kg m 2 asphalt shingle or asphalt fiberglass composite shingle 2 7 lb m ft 2 13 2 kg m 2.