Introduction
In the realm of roofing, precision and expertise are paramount. At Benson Contracting, located in Glens Falls, NY, we’ve witnessed a myriad of roofing errors that can lead to significant problems. To safeguard your investment, it’s crucial to be aware of these common pitfalls.
1. Misaligned Shingles
Shingles must be laid in straight, uniform lines. Misalignment not only affects curb appeal but also shortens the roof’s lifespan.
2. Incorrect Counter Flashing Installation
Proper counter flashing involves cutting a reglet line and inserting the metal at a 90-degree angle. Incorrect installation leads to leaks and reliance on short-lived caulking.
3. Reusing Old Flashing
Old flashing compromises moisture protection. Always replace flashing during roof replacement to avoid leaks.
4. Neglecting Ice & Water Shield in Valleys
Roof valleys, handling significant water flow, require an ice and water shield. Omitting this can lead to leaks.
5. Inadequate Sealing of Pipe Collars
Proper sealing involves a layered approach with ice and water barrier and flashing. Many roofers skip crucial steps, leading to leaks.
6. Improper Ridge Vent Installation
Ridge vents should be hand-nailed to prevent blow-offs. Using standard roofing coil nails is insufficient.
7. Inadequate Ridge Vent Cutting
For effective ventilation, a minimum of 1.5-inch opening is necessary when installing ridge vents.
8. Unsecured Plywood Seams
After shingle removal, ensure all plywood seams are nailed down to avoid visible bumps on the finished roof.
9. Not Replacing Rotted Plywood
Ignoring rotted plywood can lead to a sagging, wavy roof appearance over time.
10. Skipping Ice & Water Under Step Flashing
This mistake can cause leaks during ice dam formation in winter.
11. Leaving Debris on Roof Pre-Installation
Ensure all debris, like leftover nails, is cleared to prevent roof damage.
12. Failing to Protect Landscaping and Yard Furniture
Proper tarping and removal of items are essential to prevent damage during roofing.
13. Incorrect Nail Pattern on Shingles
Maintain an 8-10 inch space between the first and second nail to prevent water infiltration.
14. Scrimping on Nails
Using too few nails or incorrect nailing can lead to shingle slippage or blow-offs.
15. Improper Nail Placement
Nails should be placed low on the shingle line, following manufacturer guidelines.
16. Nailing Too Close to the Valley
Nails should be at least 8-12 inches from the valley to prevent leaks.
17. Insufficient Contractor Insurance
Ensure your contractor has adequate insurance to cover any damages or injuries.
18. Hiring the Wrong Contractor
Opt for a contractor with a strong reputation, valid license, warranties, insurance, and positive client reviews.
19. Covering Old Shingles Instead of Replacing
Always remove old shingles for a thorough inspection and replacement.
20. Incorrect Starter Strip Installation
A missing or improperly installed starter strip risks water infiltration and shingle blow-off.
21. Improper Underlayment Installation
Roofing underlayment is crucial for added protection and should be installed correctly.
22. Inadequate Ventilation
Proper attic ventilation is essential to prevent moisture buildup and roofing system deterioration.
23. Missing Drip Edge
A drip edge directs water into the gutter system, preventing various water-related issues.
24. Inappropriate Shingle Overhang
Balancing shingle overhang is critical to prevent blow-offs and water infiltration.
25. Using Materials Unsuitable for Roof Pitch
Matching materials to the roof’s slope is crucial to prevent water infiltration.
Conclusion
Avoiding these common roofing mistakes is vital for a durable and effective roof. Always engage with expe
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