How to cut galvanised steel guttering

There is definitely a right and a wrong!

Yes thats right, the only way to cut galvanised steel guttering is to use a hacksaw. No holesaws, no angle grinders, no power tools. The heat generated by the friction is enough to break down the galvanisation of the steel, which in turn will drasticly reduce the lifetime of the product. The steel will rust in no time because of the lack of protection and your guttering will not last. Depending on the supplier, they may void your warranty if they can spot how the material has been cut. With Lindab, if you cut using a powertool the warranty is immediately void.

Cutting with a hacksaw or steel scissors is your only option, and there are certain ways to make specific cuts which will mostly be found in the manufacturer`s instructions. In the case of Lindab, their instruction manual can be downloaded here.