You can achieve a nice look with a seamed appearance by having a metalworking company cut and bend sheets of metal so it resembles standard smooth metal coverings. This makes it easy to customize with any special details in the right style. The joint where the normal folding occurs can be resolved with tightly made U-profiles that are placed over the upturned edges, allowing for concealed fasteners just like in regular metal roofing.
Often surprising how good the prices can be for such simple jobs from companies in industries other than construction.
Often surprising how good the prices can be for such simple jobs from companies in industries other than construction.
When welding stainless steel roofs, the material is, as mentioned, very thin sheet metal, 0.4mm, and the welding method is normally seam welding. This is a welding method closely related to spot welding, which most of you have probably seen in reports from car factories. The principle is that the sheets are pressed together with great force, and then current is passed through the pressed area so that the metal melts very locally at the contact point. As a result, the surrounding metal heats up minimally and does not warp. The difference between spot welding and seam welding is that spot welding occurs at a point, while seam welding occurs continuously between rotating rolls. Collectively, these welding methods are known as resistance welding.
However, resistance welding generally has the characteristic that the materials must be very clean—there is no major melt to mix up any impurities, and no filler material can alloy the joint. Rusty corten steel, therefore, would be very unsuitable for welding with the same methods used for stainless steel roofs. Furthermore, the thinnest corten steel is about 2mm, so even if it is available unstained, the machines used for stainless steel are far too weak.
I believe more in a solution like the one GK100 is suggesting. There is no problem in bending either single or double folds in a press brake, even with thick sheet metal, but what should be used to clamp the fold in place on the roof? Hence, the solution with simple bends and loose U-profiles is interesting.
Otherwise, the main limitation is probably the length of the roof slope. Standard sheet metal is usually up to 3m in length. It is relatively easy to find companies with shears and press brakes that handle up to 3m. If you need lengths of 4-5m, it can usually be obtained as over-format = expensive. It is also significantly harder to find a company with machines for these lengths.
However, resistance welding generally has the characteristic that the materials must be very clean—there is no major melt to mix up any impurities, and no filler material can alloy the joint. Rusty corten steel, therefore, would be very unsuitable for welding with the same methods used for stainless steel roofs. Furthermore, the thinnest corten steel is about 2mm, so even if it is available unstained, the machines used for stainless steel are far too weak.
I believe more in a solution like the one GK100 is suggesting. There is no problem in bending either single or double folds in a press brake, even with thick sheet metal, but what should be used to clamp the fold in place on the roof? Hence, the solution with simple bends and loose U-profiles is interesting.
Otherwise, the main limitation is probably the length of the roof slope. Standard sheet metal is usually up to 3m in length. It is relatively easy to find companies with shears and press brakes that handle up to 3m. If you need lengths of 4-5m, it can usually be obtained as over-format = expensive. It is also significantly harder to find a company with machines for these lengths.
Thank you so much for all the answers!
It seems to be much trickier than we had thought, and therefore it feels like the slightly different choice of material is putting too much strain on the budget... Therefore, we are currently leaning towards going with roof sheet metal after all: https://www.xn--pltgrossisten-qfb.se/takplat/nostalgi-klicktak/.
But we hope that someone else dares to try and shares their experiences here!
It seems to be much trickier than we had thought, and therefore it feels like the slightly different choice of material is putting too much strain on the budget... Therefore, we are currently leaning towards going with roof sheet metal after all: https://www.xn--pltgrossisten-qfb.se/takplat/nostalgi-klicktak/.
But we hope that someone else dares to try and shares their experiences here!
I don't understand how to weld it and make it look good, I am an old welder myself, and I also don't think it's possible to get 0.4mm corten. But nothing ventured, nothing gained.Rickard.ag said:
Then there has been a misunderstanding; what you quoted first was about stainless steel.T Tomasmexitegel said:
0.4mm corten sheet is probably a very bad idea for a roof
Run with 3-4 mm and weld? It's no problem to weld without it warping.
Fun idea anyway! Click roofing is much simpler though, easy to do yourself! Hope it looks nice.N Nybyggaren_Sto said: