TPO Roofing: An In-Depth Guide by Lion Heart Commercial Roofing

Welcome to Lion Heart’s comprehensive guide on Thermoplastic Polyolefin (TPO) roofing, a common and energy-efficient solution for commercial facilities. In this article, we delve into everything you need to understand about TPO roofing.

What Is TPO Roofing?

TPO is a single-ply roofing membrane that has quickly become one of the top commercial roofing systems, thanks to its energy-efficient properties and durability. It’s comprised of a single layer of synthetics and reinforcing scrim, designed to cover flat roofs. TPO membranes are manufactured in sheets, usually 10, 12, or 20 feet wide, then rolled up and transported to the commercial facility.

TPO’s popularity stems from its naturally reflective surface, which deflects UV rays, making it energy-efficient. In fact, the National Roofing Contractors Association (NRCA) reports that TPO now accounts for around 40% of the commercial roofing market share.

Installation Process of TPO Roofing

Once the existing substrate is prepared, the insulation is installed. Various insulation options are available, including Polyisocyanurate (Polyiso), Expanded Polystyrene (EPS), and Extruded Polystyrene (XPS). After this, the TPO membrane is attached to the cover board either with a bonding adhesive or by being mechanically fastened. The contractor then uses a hot-air gun to weld the seams together, ensuring a tight seal.

Understanding the Cost of TPO Roofing

The cost of TPO roofing varies based on factors such as the size and condition of your roof, the choice of insulation, membrane, and installation, among others. On average, a 20,000 sq. foot commercial roof can cost between $3.50 and $7.50 per square foot in materials and labor. However, prices are currently on the higher side, ranging from $6 – $12 per square foot (as of April 2023).

Why Choose TPO Roofing?

TPO roofing offers several benefits. A well-installed and maintained single-ply membrane roof can last up to 30 years. You have a choice in insulation, giving you greater control over your facility’s roof. TPO membranes can achieve Class A fire resistance listings by adding fire retardant chemicals during manufacturing. Most TPO roofing is white and highly reflective, helping save energy by reflecting UV rays and heat from the building.

Maintenance and Repair of TPO Roofing

TPO roofing lasts about 15-20 years, but during this period, seams may rip, flashings can fail, and the membrane can puncture, causing leaks. When water enters the building, it’s a sign that your TPO roof needs repair.

When you call a commercial roofing contractor for an inspection, they’ll identify where water is entering your insulation, the age of your TPO roof, how many layers the roof has, and the condition of the seams. Your repair options will depend on the roof’s condition, the extent of saturation, and other factors.

Repair Options for TPO Roofing

If your roof is less than 25% saturated, you can opt for a silicone restoration membrane system, which involves removing saturated areas, cleaning the roof, reinforcing the seams, and applying a silicone coating. If there’s more than 25% saturation, a complete tear-off might be necessary. In this case, you might want to consider other roofing systems like a spray foam roofing system, which offers great insulation and can be renewed easily.

In conclusion, it’s cost-effective to catch repairs early before they cause extensive damage. The level of saturation on your roof determines the most suitable repair options. Always consult with a professional roofing contractor to make the best decisions for your commercial facility.