Sealants & Adhesives

Durability & Performance Backed by Mineral Science

Sealants and adhesives are expected to do more than just hold materials together - they must resist chemicals, withstand weathering and maintain flexibility over time. Formulators face the challenge of creating products that balance strength, workability and long-term durability across a wide range of building applications.

That’s where Covia’s IMSIL® microcrystalline silica makes the difference. As a high-performance filler, IMSIL enhances resistance to chemicals, improves mechanical strength and optimizes flow properties, allowing sealants and adhesives to meet the toughest demands in the building products market

Why Silica Matters in Sealants and Adhesives

Silica fillers play a critical role in modifying the physical and chemical properties of adhesives and sealants. Their impact includes:

CHEMICAL RESISTANCE:

IMSIL® microcrystalline silica reduces permeability, helping adhesives and sealants resist solvents, fuels, oils and other aggressive chemicals.

REINFORCEMENT:

By improving density and reducing porosity, silica increases the tensile strength and tear resistance of cured sealants.

RHEOLOGY CONTROL:

Silica contributes to viscosity adjustment and sag resistance, ensuring sealants and adhesives apply smoothly and cure with uniform thickness.

THERMAL STABILITY:

In high-temperature applications, silica enhances dimensional stability and prevents premature degradation.

COST-EFFECTIVENESS:

As a functional filler, IMSIL allows formulators to optimize formulations without compromising performance, improving both performance-to-cost ratios and product consistency.

Explore our full portfolio of products

IMSIL®

Microcrystalline Silica

Applications We Support

Covia supports a wide variety of sealant and adhesive applications, including:

Construction sealants for windows, doors and facades
Structural adhesives for flooring, roofing and wall systems
Industrial adhesives used in composite and precast applications
Flexible sealants designed for expansion joints and weatherproofing
Chemical-resistant coatings and sealant formulations

The Covia Advantage

When you choose Covia, you get more than a filler - you gain a partner dedicated to your success in the competitive adhesives and sealants market.

Technical Expertise: Our team understands the chemistry of adhesives and sealants and how mineral fillers affect strength, flexibility and chemical resistance. We collaborate with customers to refine formulations, troubleshoot challenges and improve performance.
Customer Support: Covia is committed to responsive, solution-driven service. Our technical and commercial teams work closely with formulators, providing guidance from product selection through application testing.
Reliable Supply Chain: With a nationwide logistics network, flexible packaging options and consistent product availability, Covia ensures you always have the silica building products you need to keep production running smoothly.
Commitment to Innovation: Covia continually invests in advancing materials science and developing new mineral technologies that improve performance, sustainability and efficiency across adhesives, sealants and other building products.

Seal Your Success with Covia

In a market where performance and reliability are everything, Covia delivers silica-based additives that help your adhesives and sealants stand out. IMSIL microcrystalline silica offers proven chemical resistance, durability and stability — backed by the technical expertise, service, and logistics that make Covia the supplier of choice for building products manufacturers.

Contact Covia for expert technical support and confident delivery of high-performing building products that consumers trust.