NR General Construction
Why Roofing Installation Matters..n
A roof is not just shingles.
It is a protection system.
At NR General Construction, we focus on system performance, not just material selection. From deck inspection to underlayment integration and flashing precision, every detail determines whether a roof lasts 10 years or 30.
Proper installation ensures:
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Controlled water drainage
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Wind resistance integrity
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Structural deck protection
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Ventilation balance
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Long-term durability
Below, we explain the roofing systems available and how each one is designed to protect your home from the top down.
Types of Roofing
Shingle Roofing
Asphalt shingles remain one of the most dependable roofing systems in residential construction.
When installed as part of a complete roofing assembly, including deck inspection, underlayment integration, ice & water protection, and proper ventilation, they provide reliable water control, wind resistance, and long-term structural protection.
At NR General Construction, we prioritize precision in system installation to ensure durability, performance, and lasting value.
Asphalt Roll Roofing
Asphalt Architectural shingle Roofing
Professional roofing is installed as a complete layered protection system, not just a surface covering.
A standard installation includes:
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Roof deck inspection (plywood / OSB condition)
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Ice & water shield in critical areas
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Synthetic underlayment for moisture protection
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Proper flashing at valleys, chimneys, and penetrations
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Code-compliant fastening pattern
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Ridge ventilation for airflow and longevity.
Each layer works together to create a continuous, weather-resistant barrier that withstands wind, moisture, and long-term exposure.
Metal Roofing
Metal roofing is one of the most durable and high-performance roofing systems available.
When properly installed as part of a complete roofing assembly, including deck inspection, high-temperature underlayment, precision panel alignment, fastening system integration, and professional flashing installation, it delivers superior wind resistance, water protection, and long-term structural reliability.
At NR General Construction, we prioritize system precision in metal roofing installations to ensure maximum performance, durability, and a clean architectural finish.
Five V Metal roofing
Standing Seam Metal Roofing
Ribbed Galvalume Metal Roofing
How Metal Roofing Is Properly Installed
Metal roofing is not simply fastened over a roof surface.
It is installed as part of a layered roofing protection system. A standard installation includes:
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Structural roof deck inspection (plywood or OSB integrity)
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High-temperature synthetic underlayment barrier
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Ice & water shield at eaves, valleys, and penetrations
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Precision panel alignment and layout planning
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Engineered fastening system (concealed or exposed, depending on profile)
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Proper flashing at ridges, valleys, walls, and transitions
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Expansion allowance for thermal movement
Each panel is secured as part of an integrated roofing system designed to resist wind uplift, manage water intrusion, and accommodate structural expansion while maintaining long-term performance.
Installation Over Existing Roofing
In certain cases, metal roofing can be installed over an existing shingle system when structural conditions allow.
This typically applies to:
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Structurally sound plywood
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Structurally sound OSB
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Single-layer asphalt shingles are in stable condition
In South Carolina’s humid, wind-exposed environment, a deck inspection is strongly recommended. Any moisture damage, swollen OSB, soft decking, or multiple roof layers should be addressed before installation to ensure proper fastening and long-term performance.
For maximum structural integrity, full tear-off and deck evaluation often provide the most secure foundation for metal roofing systems.