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The Truth About Asphalt Shingle Warranties in BC: What Every Homeowner Needs to Know Before Re-Roofing

  • Cody Giroux
  • 1 day ago
  • 3 min read
Asphalt Shingle Warranty

At Valley Metal Roofing, we believe homeowners should have all the facts before making a major investment in their home. When it comes to re-roofing, the warranty is often a deciding factor. But what many don’t realize is that the fine print in asphalt shingle warranties can be filled with exclusions, voids, and conditions that make coverage difficult or even impossible to claim. This article will break down the realities of major shingle brand warranties and help you ask the right questions before you commit.


The 10-15 Year Reality of Asphalt Roofs

Although asphalt shingle manufacturers promote warranties of 30, 40, or even "lifetime" coverage, the actual lifespan of most asphalt roofs in British Columbia is 10 to 15 years. Why? Because modern asphalt shingles are often manufactured the same way your old roof was, or worse.


In fact, today's shingles have even lower durability than past generations. Manufacturers have reduced the asphalt (oil-based) content and replaced it with limestone filler and a thicker fiberglass mat. While this may cut production costs, it has a major drawback: the shingles become more brittle, less flexible, and prone to cracking over time, especially in cold or wet climates like BC.


What "Lifetime Warranty" Really Means in an Asphalt Shingle Warranty

Don't let the word "lifetime" fool you. Here's what it often actually means:


  • Lifetime: Coverage only applies while the original homeowner owns the house.

  • Prorated: After the first 5-10 years, coverage drops every year.

  • Labour Not Covered: Even if materials are covered, you may pay thousands in labour and disposal.

  • Strict Install Rules: If a contractor misses one detail, your warranty could be void.


Hidden Pitfalls in Asphalt Warranties

We reviewed the fine print of leading manufacturers like GAF, Owens Corning, IKO, and CertainTeed. Here are the most common ways warranties can be voided or severely limited:


  1. Improper Installation

    • Wrong nails, poor nailing pattern, incorrect flashing.

    • Even certified contractors can make mistakes that void your coverage.

  2. Missing System Accessories

    • Didn’t use all matching-brand components (starter shingles, underlay, vents)? Warranty may not apply.

  3. Insufficient Ventilation

    • If your attic isn’t ventilated exactly to spec, shingle damage isn’t covered.

  4. Cold Weather Installation

    • Most warranties exclude sealing failures if the roof was installed below a certain temperature.

  5. Layering Over Old Roof

    • Adding a new layer on top of old shingles can disqualify your claim.

  6. Wind Damage Not Covered

    • Wind resistance only applies if special installation steps are followed.

  7. Not Transferable

    • Many warranties only transfer once—or not at all—to the next homeowner.

  8. Algae, Moss & Debris

    • If you don’t clean your roof regularly or remove moss, coverage can be denied.


Why We Believe in Full Transparency

At Valley Metal Roofing, we don’t use high-pressure tactics or hide behind vague warranties. We offer straightforward information, clear communication, and roofing solutions designed with long-term performance in mind.


We believe that homeowners deserve more than marketing claims and fine print. That’s why our process emphasizes education, precision installation, and peace of mind that extends well beyond the day your roof is installed.


Questions Every Homeowner Should Ask Before Choosing Asphalt

  • Is this a limited or prorated warranty?

  • Will the labour and disposal be covered?

  • What installation requirements must be met to keep the warranty valid?

  • What happens if I sell my home?

  • Are ventilation and accessories included in the system?

  • What maintenance do I need to perform to keep coverage?


Your Roof Should Be the Last Thing You Worry About

We’ve met hundreds of BC homeowners who thought their asphalt warranty would protect them, only to be left disappointed when issues arose. That’s why we believe in giving you the full story upfront.


If you’re tired of replacing your roof every 10-15 years, let’s talk about a roofing solution that’s built to last.


📍 Book your complimentary roof & attic inspection here, or reach out to

 
 
 

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