Commercial Roofers Norfolk

Commercial Roofing FAQs

What are the different types of commercial roofing systems?

There are several types of commercial roofing systems commonly used, each with its own advantages and disadvantages:

• Built-Up Roofing (BUR): A traditional, multi-layered system consisting of alternating layers of asphalt and reinforcing fabric. It's known for its durability, waterproofing capabilities, and affordability.
• Modified Bitumen Roofing: A single-ply system that uses asphalt-based sheets modified with polymers for enhanced flexibility, durability, and weather resistance. It's a versatile and cost-effective option for various commercial buildings.
• Single-Ply Membrane Roofing: A modern system using a single layer of waterproof membrane, typically made from EPDM (ethylene propylene diene monomer) rubber, TPO (thermoplastic polyolefin), or PVC (polyvinyl chloride). These membranes offer excellent waterproofing, energy efficiency, and ease of installation.
• Metal Roofing: Known for its longevity, durability, and fire resistance, metal roofing is a popular choice for commercial buildings. Available in various styles, including standing seam, corrugated, and metal shingles.
• Spray Polyurethane Foam (SPF) Roofing: A spray-applied roofing system that forms a seamless, monolithic membrane, providing exceptional insulation, waterproofing, and energy efficiency.
• Green Roofing: A system that involves covering the roof with vegetation, soil, and drainage layers. Offers environmental benefits, including reduced stormwater runoff, improved air quality, and energy efficiency.

Choosing the best roofing system depends on various factors, including your budget, building structure, climate, and specific needs. A qualified commercial roofing contractor can assess your roof and recommend the most suitable option.

What are the signs that my commercial roof needs to be replaced?

Consider replacement if you see:

• Persistent Leaks: Multiple or recurring leaks despite repairs.
• Extensive Damage: Large areas of damaged or deteriorated roofing, beyond cost-effective repair.
• Ponding Water: Persistent standing water after rainfall.
• Sagging or Structural Issues: Sagging, deflection, or signs of structural damage.
• Age and Deterioration: If your roof is nearing the end of its lifespan and showing signs of widespread wear and tear.

A professional roof inspection can definitively tell you if you need a replacement.

What is a roof curb?

A roof curb is a raised framework, typically made from wood or metal, built on a flat roof to provide a raised platform for mounting rooftop equipment, such as:

• HVAC units
• Skylights
• Exhaust fans
• Solar panels

Roof curbs elevate the equipment above the roof surface, providing proper drainage, preventing ponding water, and ensuring a watertight seal around the penetration. They are crucial for the longevity and performance of the roof and the installed equipment.

What are the different types of roof warranties?

Two main types of warranties:

• Manufacturer's Warranty: Offered by the manufacturer of the roofing materials and typically covers defects in the materials themselves, such as premature failure, curling, or discoloration. The length of the warranty can vary depending on the material and manufacturer, ranging from a few years to a lifetime.
• Contractor's Warranty: Provided by the roofing contractor and covers the quality of the installation workmanship. This warranty typically covers leaks or other issues that arise due to improper installation and is usually for a shorter period, often 1 to 10 years.

Some manufacturers or contractors may offer additional warranties:

• Extended Warranties: Options to extend the standard warranty period for an additional cost.
• Specific Warranties: Covering specific aspects of the roofing system, such as ponding water resistance or wind uplift resistance.