Owens Corning Duration asphalt shingles are designed for durability and weather resistance. This guide outlines a step-by-step approach to installing Duration shingles, including preparation, underlayment, nailing patterns, starter courses, valleys, ridges, and maintenance. Following these instructions helps ensure proper performance, wind resistance, and a long-lasting roof system. The guidance aligns with common industry standards and Owens Corning recommendations to maximize warranty coverage and roof longevity.
Overview Of Duration Shingles
Duration shingles use a woven fiberglass mat with ceramic-coated mineral granules and a WeatherGuard moisture barrier. They are available in a range of colors and styles intended to complement different home aesthetics. For best results, installers should follow the manufacturer’s installation instructions specific to Duration, including nail placement, shingle spacing, and fastening requirements. Proper alignment and consistent fastener depth are critical for wind resistance and shingle longevity.
Preparation And Tools
Before starting, confirm roof structure is sound and free of debris. Gather essential tools such as utility knife, chalk line, tape measure, pry bar, roofing hatchet, hammer, roofing nails (galvanized or corrosion-resistant), and a ladder safety system. Use corrosion-resistant nails sized per Owens Corning guidance, typically 1-¼ inch to 1-¼ inch nails with plastic caps for certain wind zones. Install underlayment (roofing felt or a synthetic membrane) per local code and manufacturer recommendations to create a secondary barrier against moisture.
Underlayment And Nailing Pattern
Apply the underlayment in horizontal courses with proper overlaps to shed water toward the eaves. For Duration shingles, nails are driven through the shingle into the roof deck at specific locations to secure the shingle in high-wind conditions. The standard nailing pattern usually requires two to four nails per shingle depending on wind zone and product line; ensure nails are driven flush and not overdriven. Do not nail within the tabbed area of the shingle or too close to edges to prevent blow-off. Maintain a consistent nail pattern across the roof for even wind resistance.
Starter Shingles And Edge Installation
A proper starter strip creates a clean edge and prevents moisture from wicking upward. Use factory-cut starter shingles or a compatible starter course recommended by Owens Corning. Align the starter row along the eaves with the adhesive strip facing upward. Secure starter shingles with recommended fasteners and spacing. Avoid overhanging the edge; typically, a ½ inch overhang is used to allow for proper water shedding while maintaining a secure edge. Double-check alignment at corners and along planed ridges for a uniform appearance.
Installing Through Decking And Valleys
Position each Duration shingle to cover the previous course by a consistent exposure, typically one to two inches, depending on the product line and wind requirements. Start courses with a straight, plumb line; use a chalk line or straightedge to maintain alignment across valleys and ridges. In valleys, use appropriate shingle installation techniques or valley flashing per Owens Corning guidelines to direct water away from the roof interior. For hips and peaks, cut shingles as needed to maintain a neat, weather-tight seam while preserving the pattern and color continuity.
Ridge Venting, Wind Limits, And Adhesive Strips
When installing Duration shingles, consider ridge vent placement and ensure adequate ventilation to extend roof life. Some Duration shingle lines include adhesive seals along the top edge for enhanced wind resistance; ensure proper adhesion by pressing shingles firmly into place and masking any interference with neighboring shingles. Wind resistance varies by product line and installation method; adhere to Owens Corning’s listed wind speeds for each shingle batch and zone. In hot climates, allow sufficient time and use caution when cutting and handling shingles to prevent warping.
Maintenance, Inspection, And Common Installation Mistakes
Regular inspections after severe weather help identify loose or damaged shingles quickly. Look for lifted edges, missing fasteners, and damaged underlayment. Address issues promptly to prevent leaks. Common mistakes include under-driving nails, skipping starter strips, improper valley installation, and inconsistent shingle exposure. Adhering to the manufacturer’s installation instructions, including nail type, spacing, and sealant use, minimizes warranty disputes and improves roof performance. Use color-matched components and follow color-matching guidelines to maintain the roof’s aesthetic value over time.
Quick Reference: Key Steps At A Glance
- Verify roof deck and ventilation: ensure structural integrity and proper airflow.
- Install underlayment correctly: overlaps and moisture barrier per code.
- Apply starter shingles: align precisely at eaves and rake edges.
- Follow precise nailing pattern: avoid tab areas and ensure correct nail depth.
- Maintain consistent exposure: keep straight courses across the roof.
- Address valleys and edges: use proper flashing and cuts for watertight seams.
- Inspect after installation: check for lifted nails and improper adhesive seals.
Warranty Considerations And Best Practices
Owens Corning Duration shingles carry a product warranty that may depend on proper installation. Adhere to the installation instructions for the specific shingle line and local building codes to ensure warranty validity. Keep a detailed installation record, including product batch numbers, nail type, and weather conditions during installation. If a professional installer is preferred, verify credentials and request a written installation plan that references the Duration product line used and the roof’s wind zone classification.