codes of lead

[turnpin]

chatting with a few of the chaps the other day generally about sheet lead roofs and we wondered what code of lead would have been used on st.pauls cathedral 4&5 were suggested I think more likely code 6
hope i am nearest as a couple of pints rest on the out come.....🙂
regards turnpin

 

[hiretools]

Well 6 is not right as that is Black, who-ever said 5 which is Red is right thats the 1 on St Pauls cathedral London. 🙂 Wondering how i know i used to work there as a admin asst.

it's in the history there

 

[ken quinton]

Most domed roofs of that period used sandcast lead rather than more modern
milled lead.
Sandcast is usually equivalent to code 7 or 8. which used to be 7 pound lead or 8 pound lead the weight of the lead 1 foot square

 

[hiretools]

Right well misinterpretaion then i gave you the nowaday equivalent i see you would like to win this bet and with ur name im not surprised good luk.

 

[turnpin]

many thanks to you guys once again the members here come up trumps........🙂. I only wish I.d joined earlier
regards turnpin

 

[Guest123]

All listed buildings I've worked on used code 8 for almost everything except apron flashings which are code 5 or 6, skews and valleys code 5, 6 or 7 and large areas subject to expansion are code 10.

 

[Bernie2]

I suppose really the code will be a mixture on any big building, depending more on use than an overall single code for everything.

I know up here in modern times they seemed to use code 4 for nearly everything, which of course is not really right, especially if your bossing instead of burning. And as has been said, perhaps cast lead was used?

 

[Guest123]

I've actually done that, made the lead up on sand trays on a listed building. The thickness of old lead was never uniform, but it lasted for many years.
Not used code 4 for much except soakers.

 

[justlead1]

Cast lead was used and is still produced using recycling method. But the prices were poor according to the following "In the late 15th century Sir Christopher Wren specified copper for the dome of St Paul's Cathedral at an estimated cost of £3000. The government refused this and insisted on a Lead covering at a cost of £2000 - even then lead was great value!" You would get about 10 m2 code supplied and fitted now for 2k. and the lead on there would be 8 to 10 pound per square foot as has been suggested. Enjoy your pint.

 

[REDSAW]

i am more concerened for the poor sod that hauled it onto the roof.lol.

 

[justlead1]

No problem. There last job was the pyramids me sphinks.

 

[Bernie2]

Must admit I never liked lead work much, although I must have done loads of it. Its heavy work and you have to be a good "bosser". Its a skill I did not find easy, regardless of how long I worked with lead.

Some guys though, seemed "naturals" and could virtually make anything with a flat and a bending dresser. I always preferred "burning" because I was lousy at shaping.

But then if they use code 4 it pulls into holes when dressed hard, or it usually does if I am around.

I must admit I envied or envy the skill of a good lead worker.

 

[turnpin]

very surprised at the interest in my question theres an awful lot of untapped knowledge out there....... did not know of code 10 only thought it went up to 8 thank you all...regards turnpin

 

[Guest123]

Code 10 is available by special order. It is really thick and requires heat from a blow torch to boss it. It's used where the lengths of lead in a gutter etc. exceed the recommended LSA guidelines and alterations to the structure are not allowed. It's also used for rainwater boxes and ornamental work. Another thing we use is a expansion joint called T-Pren which is welded to the lead.

 

[turnpin]

fascinating stuff I do like looking at lead work especially older installations real quality workmanship have done plenty of lead pipe repairs in my time but have only just touched on sheet lead weatherings
keep up the good work...🙂
regards turnpin