Lead is a poisonous heavy metal, which is nice.
Therefore we treat it with respect, all old lead is carefully removed and bagged this then is taken to a licensed recycle centre where it will be sent for remanufacture. This is then passed to the lead mills rolled to a fine finish for us to buy and put back on your roof, don't worry we wont have to wait, in Blue Peter style we will invariably turn up with some we had made for us earlier.

This new lead will be in different weights i.e. 3lb, 4lb, 5lb. but as we are now metric these are called Codes 3,4,5. Note the colour. If some Johnny tells you that he is using code 5 and you see green tape on the roll - Sack Him.

So why or what are the different grades used for?

Well Code 3, is thin and will sit under slate i.e. between two slates and they will then lay right and not be proud. Usually used as a soaker for sealing the roof to an abutment such as a chimney or a wall see picture.

Code 4 is for flashings and valleys, bay tops etc although at Dean-Roofing we tend to use Code5, Why ? Well thicker is better even if dearer. If you want a cheap job your on the wrong site. See below how we tackle a bay top. (the pictures are links to a larger version, use you back button to return).

The Problem. A sunk lead covered bay.

Click on the thumbnail pictures and see a larger picture
to gain a better view.
In the first picture we can see the poor condition of the bay top

sunken bay, click me for a closer look

As the lead has now been removed the condition of the timber substrate
can be observed.

Once this is removed the supporting timbers can be replaced and at this time insulation can be added to the void
Bad boards. Click me.
.Here we can see the remedial work on its way to completion ready for the substrate to be fixed. All new wood is screwed to reduce the risk of damage to the old plastered ceiling.
Click me
The wood cover is plywood 18mm thick which is then covered in sheet lead. The Lead we use is Milled Lead code 5, that is one square foot weighs 5Lbs.

Here we see a bay covered in felt being returned o a lead cover

Click on the images for a bigger view

Before
Nicks crap bay top
After
Super new lead by DD Jim n Dean.
ROOF FORCE MEMBER.

 


Relead a chimney.

 

 

Here we see the lead has not been chased into the chimney.

Lead not set into chimney

 

 

It is easy to see why water will go inside the building.

not chased in

Here the lead is under the tile and not supported so that any water might have a tendancy to run down the felt.no support

The lead does not go far enough under the tile to be effective.small soakers

Here the lead is supported and has a larger area to manage the water.Larger soaker supported

The plywood will support the lead.Plywood support

A little blurred, but we see here how the plywood supports the lead and how it is finished being dressed over the tile.dressed in

Another fault is a hole where the lead does not go around the corner.Who left a hole?

Now the lead does go around the corner.

Hole now covered

Full flashings were then dressed over the tiles too and chased into the chimney, some render fell off at this stage and the lead was redressed again and chased into the brick work directly.