I've just taken delivery of the box-section steel roofing sheet, to replace the roofing felt on my summerhouse. The felt has never been very satisfactory, needing almost annual attention, due to damage from weather, birds and squirrels tearing it. I tried several local companies for quotes for the materials, but ended up finding the best/cheapest quote was from a company to deliver from almost 100 miles away at almost 1/3 cheaper, for exactly the same thing - galvanised steel, polyester colour coated. I first used it as my workshop roof, then I replaced my garage roof with it, now I'm tackling the summerhouse. It only suggested to have a lifetime of 10 to 15 years, but it has been on that long, with no sign of the slightest deterioration.
The cheapest quote, for everything, including delivery, came from a company in Brum, called Mighty Structural Products, an actual manufacturer.
The cheapest quote, for everything, including delivery, came from a company in Brum, called Mighty Structural Products, an actual manufacturer.