The importance of leaving the film in place until the job is finished… Part 5 of 5 on the art of material interfaces. Although a small aspect of any job, these elements take considerable planning and insight, which only a true artisan can provide.

While metal roofs and walls are generally long lasting and low maintenance, the way they’re installed can have a monumental impact on how they will look over that time.

Clearly dents and “oil-canning” can be attributed to shoddy workmanship. But there’s other more insidious ways workmen can devalue your job.

One of the worst offences is greasy handprints. On some surfaces these will become permanent. And another killer for metal finishes particularly in NZ is sunscreen. Check out the matt finish around older car doors and you can see where people have lathered up and then slammed the door shut.

So if you want to preserve the look of your expensive roof, make sure your workmen follow two simple steps…

1.      Wear gloves – to protect the surfaces, and

2.      Leave the protective film on until the job is complete.

Of course there’s always exceptions to the rule, and that’s if the project is sitting for a long time with the film on. It breaks down over time, and can end up sticking to the metal. And in these situations, where that film comes off early, make sure your roofer knows how delicate your materials are.

For well over 15 years Metal Design Solutions Ltd has pioneered advances in the architectural metal industry installing Zinc Roofing / Copper Roofing / Stainless and Aluminium Roofing and wall Cladding. Metal Design Solutions Ltd’s work is now found in and around structures across New Zealand. Check us out at