Skip to main content

Every year, an increasing number of homeowners choose a metal roofing system. No other roofing solution can match a metal roof system for your house or business property, with a lifetime of 40 years or more, energy efficiency, and minimal maintenance expenses.

As with any construction job, you may have concerns concerning the metal roof installation procedure, which we will address in this article.

Finding a qualified contractor with expertise in installing metal roofing is one of the most crucial aspects of your new metal roof. Faulty installations and poor craftsmanship, like traditional shingle roofs, may contribute to performance (such as leakage) and cosmetic difficulties.

A metal roofing contractor with experience and skill may also assist you in selecting the right metal roofing system for your budget, structure, or house.

It is just as crucial to choose a skilled and experienced contractor for your metal roof installation as it is to select the finest metal roof system choice.

Once you’ve engaged a roofing contractor, they’ll be able to answer any questions you have about your metal roof job. Meanwhile, here are some basic views on what to anticipate from a conventional metal roof installation.

Metal Roof installation Methods

Metal roof installations may be either new or retrofit. When a new building is being built, the metal roof panels are installed after completion of the building shell. The general contractor often looks forward to roofing installation since it means the building will be waterproof and interior finish work may begin.


The roofing contractor has two major alternatives for retrofit projects: recover/overlay or removes and replace. The recover/overlay option keeps the current roof in place, eliminating the necessity for and cost of ripping off and disposing of the old roof and accompanying components.

Construction of a house When recovery/overlay is not an option on a job, the contractor will offer a remove and replace procedure. Several elements influence this choice, but here are two frequent reasons to remove and replace.

  • Local construction regulations often decide whether or not removal and replacement are necessary. The majority of authorities permit recovery applications for one or two existing shingles layers. If shingle layers exceed the regulatory limit, the current roof must be removed.
  • If the current roof leaks, there might be water-damaged wood decking that has to be rebuilt. To ascertain whether there is water damage, your roofing contractor should undertake a comprehensive check of the current roof. 

All else being equal, the less tear-off, demolition, or repair work your project requires, the quicker your new roof will be installed. And, as a result, your installation expenses will be reduced.

Metal Roof Installation Components

Metal Roof Installers Near Me Metal Roofers Ottawa

The following are the essential elements of every metal roof installation job.


The material that is used to cover the rafters and joists. This is often plywood, planking, or OSB (Oriented Strand Board) placed to the top of the roof frame components to provide the roof surface for the underlayment and metal panel attachment.


Most metal roofing contractors use synthetic underlayments, which have numerous advantages over felt paper, an early generation underlayment. Synthetic underlayments are simpler to install, last longer, and can be exposed to the weather for a longer amount of time. 

Metal Roof Panels

Metal roof panels are available in various sizes and colours to suit any house and budget. Your metal roof supplier or contractor can assist you in sorting through all of your possibilities.

Fasteners and clips

Decking in Wood Your roofing contractor will use clips and fasteners to secure the roofing panels to the decking, depending on the kind of metal panel you choose. 

Trim and Flashing

Trim and flashing are the components put at the intersections and terminations of the metal roofing system to seal the roof and keep water out of the roofing system and the building envelope.

Sealants and Caulking

Metal-to-metal contacts, such as laps or junctions overlapping trims and panels, are sealed using butyl tapes and sealants.

The sealant must cling to painted metal surfaces and have some flexibility (for movement) when the metal expands and contracts in response to changing weather conditions.

Job Site Requirements

Every project site is unique, but here are some critical considerations to ensure your new metal roof installation goes as smoothly as possible.


Create a level location for your contractor and their installers to store materials, park their vehicles, and, if necessary, place a dumpster. The installers will require unobstructed access on all sides of the building to place and install the panels and trim, depending on your roof.

Power Supply

For their cutting and fastening instruments, your contractor will want electricity. Allow the installers to use separate outlets for their tools and equipment to prevent tripping breakers all day. 

Some contractors equip their installers with a generator

Safety Issues

When there are people in and around the building during the metal roof installation, safety should always be a top concern.

Because metal roof panels and trim have sharp edges, installers should only handle them