MetalMettle app for iPhone and iPad

When it comes to metal materials used for rainwater catchment in construction, it can be difficult to keep track of which are compatible and which arent.

MetalMettle is a nifty little tool to help make things easier!

By selecting the upstream and downstream water catchment materials, you get a quick answer on whether they are compatible in a drainage arrangement or direct contact.

For instance, prepainted steel in direct contact with stainless steel is not a good idea. Galvanic corrosion can run rampant and cause all sorts of problems.

Similarly, a prepainted steel draining into galvanised (Zn coated steel) gutters is not a good idea. That can result in an inert catchment scenario and cause rapid corrosion of the gutter.

This is a handy reference tool, but for specific advice contact your local building supplies specialist.