St Joseph's Church, Wool 1
Dinton, Oxfordshire 3

Owlsworth Roofing replaces old lead and metal roofs with Sarnafil single ply on a regular basis. It is an unfortunate sign of the times that lead and copper roofs are more vulnerable to theft than ever before. Whether the lead is actually stolen or the existing lead roof has reached the end of its serviceable life it is often the case that Insurance Companies put pressure on the building owner to find an alternative to lead that will be less vulnerable to theft.

Owlsworth Roofing use Sarnafil single ply as a lookalike alternative to lead and copper and can use batten rolls and decor profiles to give the finishing touches to a top quality roof which combines a traditional appearance with the benefits of the modern technology of single ply – at a fraction of the price

Many of the lead replacement roofs we install are on churches including the case study below:-


When St Laurence’s Church in Slough was robbed of the original lead lining from its roof valley gutter, its parish warden was determined to find an alternative rather than replace the metal and risk thieves striking again.

The 12th century church in the parish of Upton-cum-Chalvey is the oldest building in the borough and is protected by a Grade 1* listing. As such, it came as no surprise to warden Allan James – who is responsible for three churches in the parish – when insurers told him the roof would have to be replaced with the original metal to the tune of £12,000.

Fortunately, however, Allan had heard about Sarnafil single ply roofing systems. Mimicking the look of lead and copper roofs, these high-performance waterproof membranes are proving a popular choice for buildings affected by metal theft.

Having received an insurance payment of just £4,000 to cover repair work, Allan lobbied to use Sarnafil’s Lead Grey membrane instead of lead. “The gutter is hidden from public view, so I was determined not to put lead back up there,” he says. “It’s just like feeding the birds – the more ‘food’ you put out, the more they come back.”
With the local police – who say there are seven metal thefts reported per day in Berkshire – in support of Allan’s proposal, he was able to persuade council and planning authorities to specify single ply. Sarnafil registered contractor Owlsworth Roofing, based in Henley-on-Thames, was tasked with installing the stretch of narrow guttering to the historic church.

“Sarnafil was the ideal replacement,” says Owlsworth’s Peter Mably. “Its flexibility and no flame hot air welded nature meant it was relatively easy to fit between the two pitched tiled roofs either side. We finished the job within a week and we were able to protect the church from water ingress while we worked. The thieves damaged the downpipe rainwater hopper when they took the lead, so we replaced that with help of our sister company Old House Store. Overall we were very pleased with the finished roof.”

Allan, too, is delighted with the finished roof. “I’m very pleased with Owlsworth’s workmanship – it looks very professional. Because of Sarnafil’s lead grey colour, you wouldn’t know it’s not metal. In my opinion it’s the best alternative – it was suggested we use aluminium or stainless steel, but that makes such a noise when it rains and felt is not the answer. By using Sarnafil we’ve not only saved around £3,000, but the product is also protected by a 10-year guarantee – and it won’t appeal to local criminals.”