Understanding Potential Issues with CertainTeed Landmark Shingles
CertainTeed Landmark shingles are a popular choice for homeowners across America, lauded for their durability and aesthetic appeal. However, like any roofing material, they are not immune to potential problems. Understanding these issues beforehand can help homeowners make informed decisions, properly maintain their roofs, and address concerns with their roofing contractors effectively.
Common Problems Experienced with CertainTeed Landmark Shingles
While CertainTeed Landmark shingles are generally well-regarded, several recurring concerns have been reported by homeowners. These can range from cosmetic issues to more significant performance problems.
1. Granule Loss
One of the most frequently cited problems is granule loss. The granules on asphalt shingles are crucial; they protect the asphalt layer from UV rays, which can degrade the shingle over time. When granules are lost prematurely, the underlying asphalt is exposed, leading to:
- Premature aging of the shingles.
- Increased susceptibility to cracking and curling.
- Reduced fire resistance.
- Potential for leaks if the underlying felt or deck is compromised.
Granule loss can be caused by several factors, including:
- Age and weathering: Over time, natural weathering will cause some granule loss.
- Impact damage: Hailstorms, falling branches, or even walking on the roof improperly can dislodge granules.
- Improper installation: Poor nailing techniques or inadequate flashing can stress the shingles and lead to granule shedding.
- Extreme weather: Intense heat, heavy rain, or strong winds can exacerbate granule loss.
2. Algae and Moss Growth
Many homeowners in humid or shaded environments find that their CertainTeed Landmark shingles can develop algae and moss growth. While this is a common issue for many asphalt shingle brands, it's worth noting for Landmark series.
- Algae typically appears as dark streaks or patches, often on the north-facing side of the roof or areas that remain damp.
- Moss can grow in thicker, greener patches, especially in shaded, moist areas.
While aesthetically displeasing, significant moss growth can sometimes:
- Trap moisture, which can lead to shingle deterioration and mold growth underneath.
- Potentially lift shingles in severe cases, creating small gaps for water ingress.
CertainTeed does offer algae-resistant shingles (often denoted with "AR" in their product names), so it's important to confirm if your chosen Landmark product includes this feature.
3. Shingle Curling and Cupping
Curling (where the edges of the shingle lift upwards) and cupping (where the center of the shingle sinks and the edges rise) are signs of stress on the shingles.
- This can be caused by poor ventilation in the attic, which traps heat and moisture, leading to uneven expansion and contraction of the shingles.
- Improper installation, such as overwailing or undernailing, can also contribute to these issues.
- Extreme temperature fluctuations can accelerate this problem.
Curled or cupped shingles are more susceptible to wind damage and can create pathways for water to enter the roof system.
4. Premature Blistering
Blistering is characterized by small, raised bumps on the surface of the shingle. These blisters can rupture, exposing the asphalt and leading to premature granule loss and potential leaks.
- This issue is often attributed to manufacturing defects or improper installation.
- Overexposure to direct sunlight and high temperatures can also contribute to blistering.
5. Wind Damage and Blow-offs
While Landmark shingles are designed to withstand significant wind uplift, under certain conditions, they can still experience wind damage, including blow-offs. This is more likely to occur:
- During severe storms with high winds.
- If shingles were not properly sealed during installation.
- If there were pre-existing issues like granule loss or cracking that weakened the shingle.
- If the roofing nails were not installed correctly (e.g., too high, too low, or not driven flush with the shingle surface).
6. Installation Errors
It's crucial to reiterate that many problems associated with CertainTeed Landmark shingles, or any roofing material for that matter, can be directly linked to improper installation. Common installation errors include:
- Incorrect nailing patterns or depths.
- Inadequate or improper flashing installation around vents, chimneys, and valleys.
- Poor attic ventilation, which is a critical component of a healthy roofing system.
- Failure to properly seal the shingles, especially in areas prone to high winds.
- Using incompatible underlayment or starter shingles.
Choosing a reputable and experienced roofing contractor is paramount to ensuring a long-lasting and problem-free roof.
What Homeowners Can Do
Addressing potential problems early can save significant costs and prevent more extensive damage.
- Regular Inspections: Have your roof inspected by a professional at least twice a year and after any major storm.
- Maintain Attic Ventilation: Ensure your attic has adequate intake and exhaust ventilation to prevent heat and moisture buildup.
- Keep it Clean: Gently clean off debris, leaves, and twigs that can trap moisture and promote moss/algae growth. Avoid pressure washing, which can damage shingles.
- Address Issues Promptly: If you notice granule loss, curling, blistering, or any other concerning signs, contact your roofer immediately.
Warranty Considerations
CertainTeed Landmark shingles come with a limited warranty. It's essential to understand the terms and conditions of your specific warranty. Many warranties require proper installation by a certified contractor and may have clauses that limit coverage for issues related to extreme weather or installation errors. Always keep your installation records and warranty information in a safe place.
FAQ Section
How can I tell if my CertainTeed Landmark shingles are losing granules?
You can often spot granule loss by looking for excessive amounts of granular material in your gutters or downspouts. You might also see bald spots on the shingles where the dark asphalt layer is exposed. If you see granules accumulating on the ground directly below your gutters, it's a clear sign of shedding.
Why is algae and moss growth a problem for shingles?
While primarily an aesthetic concern for some, algae and moss can trap moisture. This trapped moisture can accelerate the degradation of the asphalt in the shingles, leading to premature wear. In severe cases, the root systems of moss can also pry shingles apart, creating small openings for water to enter.
How important is attic ventilation for the lifespan of my shingles?
Attic ventilation is critically important. It helps regulate attic temperature, preventing it from becoming excessively hot in the summer and reducing moisture buildup in the winter. Proper ventilation prevents heat and moisture from damaging the underside of your shingles and the roof decking, which can lead to curling, blistering, and premature failure.
What should I do if I suspect my shingles have been damaged by wind?
If you suspect wind damage, it's best to contact a qualified roofing contractor for an inspection. They can assess for lifted, cracked, or missing shingles. It's also a good idea to check your insurance policy for wind damage coverage and document any visible damage with photos before calling your contractor.
