Asphalt shingles are the most popular roofing material in Greater Vancouver, thanks to their affordability, durability, and aesthetic versatility.
However, even high-quality shingles can prematurely fail if not installed properly.
At Absolute Roof Solutions, we’ve seen firsthand how simple mistakes during installation can significantly shorten your roof’s lifespan, causing costly repairs down the line. Here are five of the most common installation errors we encounter—and how you can avoid them.
1. Improper Nailing Techniques
One of the most frequent installation errors we see is improper nailing—either too few nails or nails driven incorrectly. Shingles require precise nailing techniques; too few nails can leave shingles vulnerable to wind damage, while over-driven nails can tear through shingles and underlayment, creating pathways for leaks. Additionally, under-driven nails can result in lifted shingles, which compromises their ability to stay secure and effectively shed water. Proper nailing ensures shingles remain secure even in Vancouver’s stormy weather.
2. Inadequate Flashing Installation
Roof flashing protects the most vulnerable parts of your roof, including valleys, vents, chimneys, and skylights. Improperly installed flashing is a common source of leaks. Flashing incorrectly fitted or sealed will allow water to infiltrate, causing significant water damage and compromising your home’s structural integrity. Absolute Roof Solutions emphasizes thorough installation and inspection of flashing around all penetrations and edges.
3. Poorly Designed or Insufficient Ventilation
Ventilation is often overlooked, yet it’s critical to your roofing system’s health. Without proper ventilation, moisture accumulates, causing mold growth, rot, and premature deterioration of shingles. Improper ventilation can also trap heat, literally cooking your roof from within. Our recommended guideline is ensuring a balanced ventilation ratio—one square foot of ventilation for every 300 square feet of attic space—to protect your shingles and prolong your roof’s life.
4. Incorrect or Missing Underlayment
Underlayment is an essential waterproof barrier beneath your shingles. Skipping or improperly installing underlayment can cause significant water damage from wind-driven rain or ice dams. When fastening underlayment, it’s crucial to use capped nails rather than staples to ensure a secure installation that won’t come loose over time. High-quality underlayment acts as a second defense line, preserving your roof deck and ensuring that shingles can perform their best.
5. Allowing Moss and Algae Growth to Go Unchecked
Moss and algae are prevalent problems in Vancouver due to our damp climate. Left unchecked, these growths can lift shingles, disrupt their seals, and increase moisture retention, leading to leaks and rusted fasteners. Proper installation includes preventive measures, such as algae-resistant shingles or treatments and regular roof maintenance.
Don’t Let Installation Mistakes Shorten Your Roof’s Lifespan
At Absolute Roof Solutions, we’re dedicated to meticulous installation and ongoing maintenance, ensuring your asphalt shingles perform optimally for decades.
If you suspect your roof has installation issues or just want peace of mind, contact our expert team for a thorough inspection and reliable solutions.
