Waterproofing Mini-Lesson | Materials Science: What is Anti-Sagging? This article will explain how to choose polyurethane coatings for you

A newly renovated house, barely moved into, and an annoying yellow water stain appears on the corner of the bedroom next to the bathroom—this is probably a nightmare for many homeowners. Waterproofing, this hidden yet crucial project, directly determines the long-term peace and tranquility of your home.

Among the many waterproofing materials available, polyurethane waterproof coatings are becoming an increasingly popular choice due to their superior physical properties. Today, we'll discuss one of the more technologically advanced options: white, anti-sagging polyurethane.

A battle against gravity: from the norm to "standing firm"

Imagine you're applying waterproof paint to your bathroom walls. Ordinary liquid paint will slowly flow downwards under gravity. What happens then? The paint thickens at the bottom of the wall, while thinning at the top—this is the worst possible "thin at the top, thick at the bottom" situation for waterproofing, creating a weak point that can lead to problems.

This is the challenge that conventional polyurethane faces when applying it to facades. The emergence of "anti-sagging" technology is precisely to win this battle against gravity. It gives the coating a magical "thixotropic" property: during application, it is soft and smooth, easy to brush; once the brush stops, it's as if it's been "frozen," quickly solidifying and adhering firmly to the wall or slope. This ensures a uniform coating, eliminating the problem of uneven thickness caused by dripping at its source. Furthermore, uniform application reduces material waste and avoids the need for repeated brushing due to insufficient initial coat thickness.

White: A visually appealing choice for health and environmental protection.

Over the past decade or so, extensive development has provided some companies with the opportunity to win bids with low prices and cut corners. However, for consumers, due to information asymmetry and insufficient information, it is difficult to judge the quality of waterproof materials from advertisements alone.

Many unscrupulous waterproofing manufacturers often fail to meet technical standards or intentionally cut corners, much like adding melamine to milk, and then selling polyurethane waterproofing coatings adulterated with harmful volatile liquids such as coal tar or coumarone. Because pure polyurethane raw materials are translucent, adding colored substances will change its color: adding tar makes it black, adding coumarone makes it brown. Therefore, if the polyurethane coating sold by a merchant is dark-colored, consumers will find it difficult to distinguish whether such carcinogenic substances have been added.

Inferior products adulterated with coal tar have poor film-forming quality.

To alleviate customers' concerns and make it easier for consumers to determine whether harmful substances have been added, more and more brands like Canlon have launched a "white strategy." This strategy does not require extensive material science knowledge; simply by looking at the pure white color of the product, one can determine and eliminate the possibility of adding carcinogenic substances such as tar (black) or liquid coumarone resin. Compared to other colored products, it is easier to distinguish between good and bad products.

White anti-sagging polyurethane: Three major advantages

Compared to conventional polyurethane, white, anti-sagging polyurethane has significant advantages in home settings:

Construction friendly and quality controllable

It can be easily applied to key areas such as corners, pipe roots, and walls, forming a suitable film thickness in one coat, greatly reducing over-reliance on workers' skills and ensuring better waterproofing quality.

King of facades, protecting all

Its primary application is on vertical surfaces such as walls, inside corners, and outside corners. Especially in areas where water flow is impacted or moisture is prevalent, such as shower area walls, behind bathroom cabinets, and basement side walls, its uniform and thick coating provides long-lasting and reliable protection.

Environmentally friendly and visible, adding points to health

White itself is a direct symbol of environmental friendliness. Many high-quality products proactively seek more stringent environmental certifications (such as EU CE certification, REACH testing, etc.), giving you greater peace of mind when choosing!