29th February 2016
Envirolead – BS12588 lead produced exclusively from car batteries
Envirolead, from Envirowales, is BS12588 lead produced using only material recovered from car batteries. The highly sophisticated recovery process extracts and reuses nearly 96% of the constituent parts of any battery, only polypropylene currently lacking an economic means of reuse.
Envirolead is covered by the 50-year Lead Sheet Association warranty and carries all the benefits of standard rolled lead. However, for the first time architects have an opportunity to capitalise on one of the most efficient forms of recycling and know they are specifying a product with the lowest possible environmental impact.
Envirowales is the only plant in the UK to use this process which significantly reduces sulphur discharge, a major component of ‘acid rain’. With lead demand for construction on the increase again Envirolead is set to increase significantly the 50% of worldwide consumption which is met by recycled material.
14th April 2015
ALM supplies lead for historic Wimpole Street redevelopment
37 Wimpole Street, the premises of the General Dental Council, is a Grade II-listed Georgian town house in the heart of the Harley Street Conservation Area. As part of a scheme which involved demolition of the adjacent building architects Corrigan, Soundy & Kilaiditi designed an extension which involved flat and pitched lead roofing work. Over 40 tonnes of Code 5 rolled lead was supplied by ALM to T&P Roofing for work which involved complex detailing including dressing over timber rolls. The finished project was ultimately submitted to the Lead Contractors’ Association for inspection and given an ‘Excellent’ grading.
3rd March 2015
Stunning lead belvedere provides focal point for Dumfries House garden
Dumfries House has been portrayed as an 18th-century Sleeping Beauty. Adam-designed and Chippendale-furnished, the story has it that it remained untouched for 250 years before being ‘kissed by a prince’ to start its new life. Astoundingly, this is largely true as the estate was saved for the nation in 2007, before which few even knew of its existence. Yet its contents, dating from the mid-1750s include at least 50 pieces by the great British furniture maker Thomas Chippendale – some specially made for the house – along with the finest surviving collection of carved Scottish rococo furniture.
Blake & Co were awarded the leadwork package to cover the tower roof of the newly built belvedere within the Queen Elizabeth walled garden. There was an extremely tight works programme to fit in with the scheduled opening by the Queen on 2nd July. Just a 2 week window was available to complete the project, entailing 12 hour shifts for the 4 installers involved.
Around 3.5 tonnes of code 6 lead was supplied by Jamestown Metals and installed with a gutter at base level discharging through ornamental lead cast dragons and a welted step section. 56 lead panels were then fitted to the tower onto a 22mm thick timber substrate with open gap boarding. Leadwork to the tower was fitted in panels of up to 2.0 metres x 800mm, head-fixed with 3 rows of copper clout nail with panels diminishing in size towards the top. Standard wood core rolls to the panels and a king roll at the hips were fitted with a separate welted cap. The panels were fitted with a concealed tie at the bottom edge via a lead welded tie to the lower panel.
It had taken a last-minute pledge of £20 million from the Prince of Wales, allied to £25 million raised from other sources, to prevent the house contents from being sent to auction. In fact, less than two weeks before the threatened sale by the 7th Marquess of Bute, much of it had been packed, ready to be taken to London. Its infrastructure has now been improved at a cost of £1.5 million and more than £1.5 million spent on outbuildings.