If you’ve searched for a polyurethane waterproof coating online, you’ve probably noticed that different suppliers and countries use completely different names for the same product. One manufacturer calls it a “PU membrane,” another lists it as a “liquid applied waterproofing membrane,” and a third writes “PU waterproof coating” on the barrel. This naming confusion makes sourcing harder — especially when comparing specs across waterproof coating supplier websites.
In this guide, we list every common alias for polyurethane waterproof coating and explain where each name comes from, so you can communicate clearly with any waterproof coating manufacturer.
The Complete List of Aliases
1. PU Waterproof Coating / PU Waterproof Membrane
The most common shorthand. “PU” stands for polyurethane. Both PU waterproof coating and PU waterproof membrane are used interchangeably across Asia, the Middle East, and Africa. You’ll see these on product pages of nearly every waterproof coating supplier based in China.
2. Polyurethane Liquid Membrane
European and Turkish manufacturers favor “polyurethane liquid membrane” or “PU liquid membrane.” This alias emphasizes the liquid-applied nature, distinguishing it from sheet membranes. It’s a popular roof waterproof coating term in EU technical documents.
3. Liquid Applied Waterproofing Membrane
The broadest alias. A liquid applied waterproofing membrane refers to any cold-applied, liquid-form waterproofing that cures into a seamless film — including polyurethane, acrylic, and polyurea. When a waterproof coating manufacturer uses this term, they’re usually describing a PU-based product.
4. Moisture-Curing Polyurethane Waterproof Coating
Single-component PU coatings cure by reacting with humidity in the air. This gave rise to “moisture-curing polyurethane waterproof coating” — common in ASTM C836 spec sheets. If you’re sourcing a one-component waterproof coating, this alias appears frequently.
5. Elastomeric Liquid Waterproofing Membrane
“Elastomeric” highlights the coating’s ability to stretch and recover — typically 300–800% elongation. Used in South Africa, Australia, and North America. A waterproof coating supplier using this term is almost certainly selling a PU product with crack-bridging capability.
6. Reaction-Cured Coating / “Oily Coating” / Classic 851 & 911
In China, polyurethane waterproof coating is classified as a “reaction-cured” coating and colloquially called “oily coating” (油性涂料). Two classic model codes — “851” and “911” — have become industry aliases for two-component PU systems since the 1980s. If a waterproof coating factory references “911,” they mean a standard two-component PU waterproof coating.
7. Other Technical Aliases
- PU sealant — for joint sealing applications
- Cold-applied waterproofing membrane — emphasizes no-heat application
- Seamless waterproof membrane — highlights the joint-free cured film
- Aliphatic / Aromatic PU coating — distinguishes UV-stable vs. non-UV grades
Why This Matters for Importers
Knowing these aliases helps you compare products accurately. One supplier’s “PU waterproof membrane” and another’s “elastomeric liquid membrane” may be chemically identical. By searching multiple terms, you find better pricing from a waterproof coating factory that might not rank for the obvious keyword — especially for basement waterproof coating and exposed roof waterproof coating projects.
About BOSLAI
BOSLAI is a waterproof coating manufacturer and exporter based in China, specializing in polyurethane waterproof coating and JS polymer cement coatings. Whether you call it a PU waterproof membrane, a liquid applied waterproofing membrane, or “PU coating” — we manufacture it under one roof. We support OEM and private-label production with custom formulations, low MOQ from 200kg, and full TDS/MSDS documentation. Contact us for free samples.
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FAQ
Q1: Are “PU waterproof coating” and “polyurethane waterproof coating” the same?
Yes. “PU” is simply the abbreviation of “polyurethane.” Both refer to the same product. A waterproof coating supplier may use either name on their TDS.
Q2: What’s the difference between a PU waterproof membrane and a liquid applied waterproofing membrane?
A PU waterproof membrane is a specific type of liquid applied waterproofing membrane. The latter is a broader category that also includes acrylic and polyurea systems. Most are PU-based.
Q3: Why do Chinese suppliers call it “911 waterproof coating”?
“911” is a classic model number for two-component polyurethane waterproof coating from the 1980s. When a waterproof coating manufacturer references 911, they mean a standard two-component PU system.
Q4: Can BOSLAI supply under my own brand?
Yes. As a waterproof coating manufacturer and exporter, BOSLAI offers full OEM services — custom formulation, private-label packaging, and TDS/MSDS under your brand. Low MOQ from 200kg.
Q5: Which alias should I search on Google?
Search at least three: “polyurethane waterproof coating,” “PU waterproof membrane,” and “liquid applied waterproofing membrane.” This ensures you find waterproof coating factory listings that may not rank for every alias.
