English Author: Leaha Ji Publish Time: 2026-03-12 Origin: Site
TPO waterproofing membrane and SBS waterproofing membrane are two widely used materials in the field of building waterproofing, but they have essential differences in material composition, performance characteristics, and construction methods. Simply put, TPO belongs to polymer coil materials, representing more modern and environmentally friendly technologies; SBS belongs to modified asphalt rolls and is an economical choice with mature technology and wide application.
In order to provide you with a more intuitive understanding, we have organized their core differences into the following table:
Comparative dimension | TPO waterproofing membrane | SBS waterproofing membrane |
Material properties | Polymer waterproofing membrane, based on thermoplastic polyolefin resin. No plasticizers, environmentally friendly and stable performance. | Modified asphalt waterproofing membrane, using asphalt as the base material, modified with SBS rubber, usually with polyester tire base fabric as the reinforcement layer. |
| Core performance | Outstanding weather resistance, UV resistance, and aging resistance, with a long service life. Excellent low-temperature flexibility (maintaining flexibility at -40 ℃) and corrosion resistance. | Good temperature adaptability, no flow at high temperatures and no brittle cracking at low temperatures (such as no cracking at -25 ℃). High tensile strength and strong adaptability to base deformation. |
| Construction method | Mainly using hot air welding, the joint strength is high, forming an integrated waterproof layer. There are also self-adhesive products available. | The traditional method is flame fusion construction. There are also cold self-adhesive products available now, suitable for places where hot work is not advisable. |
| Environmental Protection and Safety | Green and environmentally friendly, with no open flames or solvents during the construction process, and recyclable waste materials. | Hot melt construction has hidden dangers of open flames and smoke emissions, and its environmental friendliness is relatively poor. |
| Main applications | Suitable for projects that require high durability and environmental protection, such as large industrial and civil building roofs, public buildings, cold chain logistics warehouses, especially exposed roof systems. Also suitable for planting roofs (resistant to root piercing). | Widely applicable and cost-effective. Suitable for roofs, basements, interiors, municipal engineering, bridges, tunnels, etc. in industrial and civil buildings. |
| Common specifications | The width can reach 2 meters, the length is 20 meters, and the thickness is 1.2, 1.5, 1.8, 2.0 millimeters, etc. | Width of 1 meter, length of 10 or 15 meters, thickness mainly 3 or 4 millimeters. |
Reference price | relatively high | Relative economy |
In general, the choice of coil material mainly depends on your project budget, specific application scenarios, and performance requirements:
If you are working on the roofs of large factories or public buildings, or have high requirements for the lifespan and environmental friendliness of waterproof layers, TPO rolls are a more suitable choice. Although the initial investment is slightly higher, it is more worry free in the long run.
If you are doing waterproofing for ordinary residential buildings and basements, and value cost-effectiveness and mature stability of materials more, then SBS roll material can fully meet the requirements and is a very reliable choice.
In addition, TPO rolls are known for their environmental friendliness, weather resistance, and cold construction, making them suitable for modern green buildings; SBS roll material stands out for its low-temperature flexibility and crack resistance, making it more suitable for cold regions.
