Metal is a highly-dense roofing material. Bringing it on your roof sheath is difficult enough. Removing damaged panels during a typical metal roofing repair procedure requires special tools and equipment that experienced and industry-recognized metal roofers in London ON usually have. Truth be told, most metal roofing repair requires the help of professionals, and some DIY homeowners can deal with them efficiently in some cases too.

While homeowners in London ON can place sealants without any difficulty especially during the most troubling and severest of rainstorms, you’ll definitely need the help of experts when it comes to the following problems.

Securing Leaks Around Screws and Gaskets

If you’re using corrugated metal roofing, it’s no wonder to see exposed roof screws by the curb. It isn’t a bad thing — in fact, most homeowners love the corrugated metal roof and exposed screw appeal. Unfortunately, the same appealing screws are the main cause of many leaks in residential properties.

Metal roofing screws keep water out with rubber washers. In addition, these washers allow metal roofs to expand and contract safely without compromising its airtight seal and material integrity. However, these consistent cycles will wear it down and have it cause leaks in the long run.

StealthBond has a great explanation of all factors that cause screws to fail and requiring professionals in metal roofing repair to help you. Read more below.


It’s well-known within the professional roofing community that the single largest culprit for metal roof leaks are roofing screws and faulty washers. In fact, this industry buzz is the very reason we invented the StealthBond® metal roofing system, a patented and approved alternative to traditional screw installations. Forget the screws and eliminate metal roof leaks with StealthBond®.

Theoretically, metal roofing screws keep water out by compressing a rubber washer at the base of the screw head against the metal roofing panel. As the screw is driven into the metal roofing panel, the rubber washer effectively becomes a gasket between the roofing panel and the screw. Simple enough, right? Unfortunately, there are a myriad of ways this simple process can go terribly awry.

Improper Metal Roofing Screw Installation

A properly driven screw is perfectly perpendicular to the panel, is driven straight and with good penetration . When this happens, the rubber gasket is seated firmly against the roof. However, all it takes is one poorly driven screw to make a mess of your attic and your home.

Over Driven Screws

A very common mistake, one that’s often made in an attempt to ensure a tight seal, is over driving a screw. When a screw is tightened too much, it can cause the washer to crack, cup, or even spin out of place entirely. (Continued)

Re-Coating Your Metal Roof

Buying a paint roller, ladder, and buckets of acrylic elastomeric paint is enough to help your rusted yet still durable and high-integrity roof avoid some pricey metal roofing repair. However, if you commit a small problem while applying paint on your roof, you might find yourself short on paint, a poor-looking roof by the curb, or the paint failing to rejuvenate your roof’s functionality and durability.

You can have experts perform the painting process. Usually, their painting procedures are similar to SF Gate Home Guides‘ instructions listed below.

Roof Preparation

For a new and unpainted roof, allow it to weather for six months before painting it. If the project cannot wait, wash off oils and other remnants of the galvanizing process with a weak acid such as vinegar, diluted 50 percent with water. Just before painting, wash the roof with a power washer at a pressure of 2,500 pounds per square inch whether it is a new or an old one that requires re-painting. Power washing removes mold, mildew and oils that interfere with paint adhesion. It offers a time-saving alternative to scraping off old paint with a paint scraper and scrubbing the roof with a solution of water and trisodium phosphate, an option for cleaning without a power washer.

Type of Paint to Use

Painted metal roofs come with a baked-on factory finish, and you can re-coat these, — as well as paint bare metal roofing — with acrylic latex paint. You can also use oil-based alkyd paint, but you need to first apply an undercoat of a galvanized metal primer such as Sherwin-Williams Pro Industrial Pro-Cryl Universal Acrylic Primer. Use the primer even if you add a topcoat of acrylic latex paint, because the primer inhibits rust and bonds better than paint. Paint, in turn, bonds better to the primer than it does to the bare substrate.

Applying the Paint

Apply the Sherwin-Williams paint and primer to a galvanized roof with a paintbrush or a roller specifically designed for corrugated metal. If crawling around on a metal roof in the hot sun does not sound like an ideal way to spend an afternoon, rent an airless sprayer to complete the project. Not only does a sprayer do a more thorough job than painting with a brush, it allows you to minimize the amount of time spent on the roof. If you spray, choose a windless day to paint. (Continued)

A Full-On Roofing Underlayment Replacement

You’ve definitely seen your roofing material’s underside when you removed some panels successfully. However, most homeowners won’t think much of seeing some small underlayment areas torn or damaged. Unfortunately, they’ll need to repair or replace that underlayment.

It can be a huge problem if you have to tear off your roof on your own. Professionals in London ON can tear off your roof and preserve the viable roofing materials’ integrity without any issues. With the right tools and equipment, you’re guaranteed only consistent and non-damaging results.

Tearing Off Your Roof Completely

A simple area tear-off to patch different roof underlayment parts is one thing. However, a complete roof tear off for a replacement thereafter is another. If you’d like to tear off your roof completely, don’t do it alone; you might rip off some crucial parts of your roof and damage functioning areas without knowing it. It’s best to entrust it to professionals instead.

If you have yet to find roofers who can help you with any of these processes, you can count on Cub Roofing to help you. With decades of years in experience and knowledge, we’re confident in fulfilling everything you need. Contact us today!