Metal roofing is great for all sorts of applications, including residential homes, but its installation differs quite a bit from traditional asphalt shingle installation as well as the more complex installation of slate and other durable materials.

Luckily, there are a few helpful tips to help you get started with metal roof installation. Here are five metal roof installation tips:

  • Lap Roofing Panels Correctly

One of the most common mistakes with metal roof installation is the improper lapping of roof panels. Either too much or too little is given, but there’s a goldilocks zone somewhere in between. Aim for about 3-5 cm of lapping with the fat end (the lip) attached to the corrugation towards the bottom.

In other words, the short lip should be covering the fat lip. The short lip should be visible when properly installed.

  • Set Screws Correctly

Another common mistake many homeowners make when installing metal roofing comes down to the screws. The screws shouldn’t be too loose (but not too tight, either). Ensure that the washer underneath the screw can be moved around a little.

Always insert screws into a flat place in the middle of the panel rather than near the corrugation. If the screws are coming loose here, the problem may be with a faulty nut driver.

  • Don’t Use Too Much Sealant

Caulking sealant is not designed to be the primary defence your home has against the elements. Good caulking of problematic areas can help keep the roof in good working order, but it should only be considered a secondary defence against inclement weather rather than the first line of defence.

Having said that, always place caulk or sealant underneath the panels where it’s protected from sunlight and weather. This will help the sealant last a lot longer.

  • Panel Overhang

As mentioned in point 1, the roof should only overhang 3-5 cm, give or take, from the edges and gables of the roof. Many homeowners are unsure of the correct amount of overhang, going either too far out or too short. Only a little bit of overhang is necessary to direct water away from the home.

  • Not Enough Screws in the Flashing

Wherever penetrations in the roof are present, such as where PVC pipe needs to come out for venting, there is always the possibility that leaks can occur. When installing flashing around penetration points, far too often homeowners will place a few screws around the protective flashing and apply a little caulking. This is often insufficient.

When installing the flashing around these areas, apply caulking underneath the boot of the flashing where it’s protected from sunlight and use plenty of screws. It isn’t uncommon to use 10-20 screws in a ring formation around the boot just to keep it flush and in place.

Roof Guard Roofing

Whether it’s for your home or for a business, metal roofs provide upwards of 50 years of longevity as well as a supremely durable material that can stand up to the elements reliably. If you’d like to have a metal roof installed properly and professionally, look no further than the experts at Roof Guard Roofing.

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