Tremco Vulkem® 250 GC: Roller vs. Self-Leveling Applications

When it comes to protecting concrete decks, walkways, and other exposed surfaces, Tremco’s Vulkem® 250 GC is a trusted choice in the construction and waterproofing industry. Designed as a one-part, moisture-curing polyurethane, this product delivers excellent protection against water intrusion while also standing up to heavy traffic and harsh conditions.

But one question often comes up: Should I use the roller-applied or the self-leveling version? Let’s break it down.

What Is Tremco 250 GC?

Tremco 250 GC is a fluid-applied waterproofing membrane that cures to form a durable, seamless elastomeric coating. It’s commonly used in:

• Parking structures
• Balconies and terraces
• Mechanical rooms
• Stadiums and plaza decks

The "GC" stands for Green Concrete, meaning it can be applied to new concrete as early as 24 hours after placement (under proper conditions), reducing project delays.

Roller-Grade Application

Best for: Vertical or sloped surfaces, small areas, or places requiring detailed application.

• Consistency: Thicker, trowelable texture that clings well to surfaces.
• Advantages:
  • Great for flashing, details, and transitions.
  • Easy to apply with a roller on ramps or vertical walls.
  • Reduces drips and runs.
• Common Uses: Perimeters, penetrations, walls, or small repairs where precision is key.

Self-Leveling Application

Best for: Horizontal decks, wide-open surfaces, or large square footage.

• Consistency: Flows easily and levels itself, creating a smooth, uniform surface.
• Advantages:
  • Faster installation on big areas.
  • Provides even thickness without much effort.
  • Ideal for flat surfaces like parking decks and terraces.
• Common Uses: Main deck areas, large flat slabs, podiums, or stadium seating sections.

Choosing the Right Version

Most projects actually use both versions together:

• Self-Leveling for the field (wide, flat areas).
• Roller-Grade for edges, details, and vertical transitions.

By combining the two, contractors achieve a seamless waterproofing system that addresses both speed and precision.

Benefits of Tremco 250 GC

• Early Application: Can be used on “green” concrete, reducing downtime.
• Durability: Excellent resistance to weather, traffic, and chemicals.
• Flexibility: Withstands thermal expansion and structural movement.
• Versatility: Compatible with Tremco’s full Vulkem deck coating systems.

Whether you’re waterproofing a new parking garage, repairing a plaza deck, or sealing a mechanical room, Tremco 250 GC provides the flexibility you need. The roller-grade gives you control where it matters, while the self-leveling option saves time and ensures uniform coverage on larger surfaces.

By understanding the strengths of each application method, you can maximize performance, reduce labor time, and extend the life of your structure.

Shop for Tremco 250 GC on our website today!