Thermoplastic Polyolefin (TPO) roofing, a marvel in the world of modern construction, has rapidly evolved since its inception in the early 1990s. This lightweight, yet durable material, stands out for its exceptional resistance to ultraviolet light, ozone, and chemical exposure, making it a top choice for commercial roofing projects. Its energy-efficient nature not only reflects sunlight to reduce cooling costs but also contributes positively towards environmental sustainability. As we delve deeper into the realm of TPO roofing, we uncover its benefits and why it has become a go-to solution for builders and architects aiming for both performance and eco-friendliness in their projects.

1.1  Thermoplastic Polyolefin (TPO) Waterproofing Membrane

1.1.1  Product Description

Thermoplastic polyolefin (TPO) waterproofing membrane is a sheet-like thermoplastic rubber elastic waterproof material made of ethylene resin as the base material and prepared by advanced polymerization technology and specific formulations. It is a new material popular in the United States and Europe. It has comprehensive characteristics such as high tensile strength, good puncture resistance, strong ultraviolet resistance, smooth surface, high reflectivity and pollution resistance. It is easy to process, weldable and convenient for construction.

1.1.2  Product Features

• High mechanical strength, superior physical properties, stable size and color.
• Large elongation and strong deformation ability.
• It has long-term plasticity and can be recycled.
• The seams are integrated by hot air welding.
• Effectively resist the erosion of harmful chemicals and industrial pollutants, and are resistant to abrasion and puncture.
• High reflectivity, ultraviolet resistance, in line with energy-saving and cool roof standards.
• Select different construction techniques according to the base surface and construction period.

I.      Construction Comparison

2.1  Self-fusion Type Special Multifunctional Protective Membrane

The protective membrane is constructed by using the fusion dry adhesion method, and there are supporting base treatment agents, sealing tapes and sealants.

Step 1 Base surface treatment

Rust removal and rust fixation on the base surface to better fuse the protective membrane and the base layer.

Rust removal and rust fixation: Clean the base surface until it is clean, dry, free of oil stains, dust or other loose objects. If the base surface is rusty, the special base treatment agent for Xiniupi self-fusing special functional protective membrane can be sprayed to remove rust from the rusty area. Areas with rust perforation should be repaired. Clean the gutter to ensure smooth roof drainage. If the corrosion damage is serious, it can be replaced as a whole. Correct or replace metal tiles with severe deformation.

Step 2 Base surface treatment

Strengthen weak points to add an extra layer of protection to detailed nodes.

Use the node sealant and node sealing tape matched with Xiniupi self-fusing special protective membrane for node sealing. If necessary, strengthen the treatment of detailed nodes such as ridge flashing, tile lap joints, eaves, gutters, fan bases, and daylighting belts first.

Step 3 Large area paving

Large area paving is very simple.

It fuses and bonds with the base surface to form an overall continuous seal. Pave parallel to the ridge (eaves) from low to high. The membrane can be peeled off while paving. The protective membrane should be closely attached to the base surface. The lap joint should be in the direction of water flow, and the lap width should not be less than 30mm.

2.2  Thermoplastic Polyolefin (TPO) Waterproofing Membrane

• For mechanical fixation construction, use a hot wedge welder to heat and weld the lap joints.

For mechanical fixation, it is necessary to puncture the waterproofing membrane, which is easy to produce leakage points.

For heat welding, it is easy to have insecure welding, debonding and warping.

2.2.2  For construction by adhesive bonding method.

The glue is easy to age and become hard and brittle, and it is easy to produce air bubbles and blisters.

It has high requirements for the base surface. The base surface should be clean, dry and free of dust.

II.      Performance Comparison

I.         Summary Explanation

1. Our waterproofing material is a functional protective membrane thay is resistant to ultraviolet rays. The coating has high crystallinity, chemical inertness, thermal stability and non-toxicity. It can resist the corrosion of most strong acid and strong alkali solvents. It is very stable under atmospheric corrosion conditions.
2. Overall sealed full adhesion without water leakage: The self-fusion type special functional protective membrane is simple to construct and can be directly self-adhered. The overall seal is fully adhered, making waterproofing more effective and bonding more durable.
3. The self-fusion type special functional protective membrane is thin, light and soft, and is easier to be closely attached. There is no hollowing or water leakage. It can effectively block water vapor and at the same time play the effects of waterproofing, vapor barrier and rust prevention.
4. Save installation costs: No mechanical accessories are needed. The installation is simple and the cost is better. No heating, baking or welding is needed. Cold construction is safe and environmentally friendly.
5. Save construction period costs: Installed directly on the metal plate, it does not occupy the installation cycle of various trades. The construction is fast and simple.Low later maintenance cost: Even if there is leakage later, it can be repaired and patched without causing the failure of the entire waterproofing system.
6. It has matching compatible sealant and reinforcing tape, and the node strengthening treatment is more effective.