The Difference Between Cement & Gypsum Self Levelers

Cement self-leveling compound is formulated with cement, sand, and additives. It is ideal for leveling concrete floors and other cementitious surfaces.

 

When it comes to floor leveling, self-leveling compounds are widely used for their convenience and reliable performance. However, with multiple types available, selecting the right one can be challenging. This article compares two common options: cement-based and gypsum-based self-leveling compounds.

 

Cement self-leveling compound is formulated with cement, sand, and additives. It is ideal for leveling concrete floors and other cementitious surfaces. Known for its high strength, durability, and moisture resistance, it is well-suited for high-traffic or damp areas such as basements and bathrooms.

 

Gypsum self-leveling compound, made from gypsum powder, water, and additives, is commonly used in both residential and commercial settings. It is appreciated for its ease of application, quick drying time, and smooth finish. Additionally, it is generally more cost-effective than cement-based alternatives.

 

 

Difference Between Cement & Gypsum Self Levelers

 

So, what are the key differences between cement and gypsum self-leveling compounds? Here’s a quick comparison:

 

Strength:

 

Cement-based compounds are generally stronger and more durable than gypsum-based ones. They can support heavier loads and offer better wear resistance.

 

Gypsum-based self-levelers provide adequate strength for residential and light commercial applications but are not ideal for heavy-duty use.

 

Moisture Resistance:

 

Cement self-levelers have excellent moisture resistance, making them suitable for humid or wet environments. Such as basements, bathrooms, and other damp areas.

 

Gypsum compounds are less moisture-resistant and not recommended for high-moisture areas. Prolonged exposure to moisture can compromise their integrity.

 

Drying Time:

 

Gypsum-based self leveling mortars usually dry faster and can be walked on in a few hours. Cement-based self leveling mortars may take up to 24 hours or more to completely dry.

 

Cement-based self leveling mortars usually take longer to dry, but they are stronger, which makes them ideal for projects that require a strong and durable surface.

 

Gypsum-based self leveling mortars dry faster, which can shorten project turnarounds. They can also be applied in thicker coats and are best suited for dry indoor environments.

 

Cost:

 

Gypsum self-levelers are usually more affordable, making them a good option for budget-conscious users or smaller projects.

 

Cement self-levelers, while more expensive, offer greater versatility and durability, justifying the higher cost in demanding applications.

 

Feature	Cement Self-Leveling Compound	Gypsum Self-Leveling Compound
Strength	High strength and durability; ideal for heavy-duty areas	Lower strength; suitable for light-duty or residential use
Moisture Resistance	Excellent moisture resistance; suitable for wet or humid areas like bathrooms and basements	Limited moisture resistance; not ideal for damp environments
Drying Time	Slower drying time; may take 24 hours or more to fully cure	Fast drying; walkable within a few hours
Cost	Higher cost; ideal for long-term or high-performance projects	More affordable; ideal for small or budget-conscious projects
Best Use Cases	Industrial floors, commercial spaces, high-traffic areas	Residential floors, small commercial spaces

 

Conclusion:  

 

Each type has its pros and cons. Cement-based compounds are ideal for heavy-duty or moisture-prone areas, while gypsum-based options suit lighter applications or cost-sensitive projects. Whichever you choose, always follow the manufacturer’s guidelines for optimal results.

 

Frequently Asked Questions (FAQs)

 

Q1: Can I use gypsum self-levelers in a bathroom?

A1: It's not recommended. Gypsum self-levelers are sensitive to moisture and may deteriorate over time in wet environments.

 

Q2: How thick can I apply cement-based self-levelers?

A2: Cement-based self-levelers can typically be applied in thicker layers compared to gypsum-based ones, but always refer to the manufacturer's guidelines.

 

Q3: Are gypsum self-levelers suitable for underfloor heating systems?

A3: Yes, gypsum self-levelers can be used with underfloor heating, but ensure compatibility with the specific system and follow installation guidelines.

 

Q4: Do I need to prime the surface before applying self-levelers?

A4: Yes, priming ensures better adhesion and prevents issues like air bubbles or poor bonding.

 

Q5: Can I mix cement and gypsum self-levelers?

A5: Mixing different types of self-levelers is not recommended, as it can compromise the performance and integrity of the final surface.