
Your roof protects your home from the elements and keeps heat in during winter. Yet, many misconceptions about roofing still circulate. Some myths may lead homeowners to neglect roof maintenance or make poor renovation decisions. In this article, we debunk several popular beliefs, explaining why they are false and which practices to adopt instead.
Myth 1: “An Old Roof Must Automatically Be Replaced”

Source : Toiture skl
While age is an important factor, it is not the only criterion for deciding if a roof should be replaced. Some materials last longer than others. Asphalt shingle roofs typically last 20 to 30 years, while metal roofs can last up to 50 years. Before deciding to replace a roof, hire a roofer to inspect shingle condition, check the seams, and assess the structure’s integrity. Regular maintenance, such as cleaning gutters and inspecting flashing, can extend a roof’s lifespan.
Myth 2: “More Insulation Always Means a Better Roof”
Good insulation is key to energy efficiency, but too much insulation can harm roof ventilation. Air must circulate to remove moisture that builds up in the attic. Excess insulation can trap moisture, promote mould growth, and damage the frame. The key is to balance insulation and ventilation: install soffits and ridge vents to let air flow while keeping attic temperatures stable.
Myth 3: “Flat Roofs Are Completely Flat and Require No Maintenance”

Source : Couvertures De La Rive-Nord
Contrary to popular belief, a flat roof is never perfectly flat. It has a slight slope to ensure water runoff. Flat roofs require regular maintenance to prevent water pooling and cracks. Inspect the membranes, clean the drains, and check for bubbles or wrinkles to avoid water infiltration.
Myth 4: “Metal Roofs Attract Lightning”
Some believe that a metal roof increases the risk of lightning strikes. In reality, metal does not attract lightning any more than other materials. Metal roofs are designed to safely dissipate electrical charges. They are also fire-resistant and can offer better protection against severe weather. If you live in a storm-prone area, consult an electrician about installing a lightning rod to protect the entire structure.
Myth 5: “A Moss Remover Will Permanently Solve the Problem”
Moss removers can temporarily eliminate moss, but they don’t replace regular maintenance. Moss grows in damp, shaded areas. Trim overhanging branches, clear leaves, and ensure gutters work properly. To prevent regrowth, install zinc or copper strips near the ridge—these metals release ions that kill moss.
Myth 6: “A New Roof Doesn’t Need Maintenance”
Even new roofs require regular inspection. High winds, hail, or falling branches can damage new shingles. Check your roof twice a year—spring and fall—for missing shingles or sealing issues. Preventive maintenance costs less than major repairs.
Myth 7: “All Roofers Are the Same”

Source : Les Constructions François Hamel
As with any trade, roofers vary in skill and experience. Choosing a certified contractor ensures the work meets standards and materials are properly installed. Ask for references and verify RBQ licenses before hiring a roofer.
By debunking these myths, you can make informed decisions about your roof’s maintenance and renovation. Rely on professional inspections rather than rumours—your roof will thank you.
Looking for something else?
Related articles
The latest industry news, interviews, technologies, and resources.

Cynthia Pigeon
•07 Nov 2023
A leaky roof is a serious problem that should be addressed without fail. Yet, one of the most overlooked aspects of roof repairs or construction is actually the most vital element, and you’ve probably never heard of it: the roof ridge cap (or roof ridge).

Editorial Team
•03 Nov 2025
Having a roof over your head is a common luxury that many homeowners may take for granted. Your roof spends its lifetime outside, coming up against all the rain, wind, sun and snow that the weather throws its way. For this reason, it is fairly likely that your roof will experience wear and tear, leading to the potential for cracks, breaks and leaks.

Editorial Team
•03 Nov 2025
Water is essential to the wellbeing of humans, but as we know, this natural element can be both a blessing and a curse. Flooding is common in regions with high rainfall levels and proximity to large bodies of water.

Cynthia Pigeon
•05 Dec 2025
Are your floors no longer up to par? Time does take its toll on hardwood floors, oftentimes resulting in a dull finish and scratches that are difficult to hide.

Editorial Team
•07 Nov 2023
Summer might be over, but that doesn’t mean all dreams of being whisked away seaside have to fade. What if we told you that travelling to a coastal haven with sandy beaches was a possibility without having to leave your cozy pad?