Roofing adhesives may not be as visible as shingles or tiles, but they play a critical role in roof performance and waterproofing. Whether bonding underlayment, securing shingles, or sealing flashing, adhesives form the invisible layer of protection that ensures a roof stays watertight and durable.
But not all adhesives are the same. Their chemistry—the compounds used in formulation—directly influences how long they last and how well they perform under Kerala’s intense sun, heavy rains, and humid climate.
Types of Roofing Adhesives and Their Chemical Makeup
Asphalt-Based Adhesives
Made from petroleum bitumen blended with polymers.
Commonly used for asphalt shingles and waterproof membranes.
Strength: Strong initial tack and good bonding with shingles.
Weakness: Susceptible to UV degradation and brittleness over time.
Polyurethane Adhesives
Two-component or single-component reactive adhesives.
Form strong, flexible bonds as they cure with moisture.
Highly durable, with excellent resistance to weather cycles.
Synthetic Rubber (EPDM) Adhesives
Designed for rubber roofing membranes.
Resist heat and UV exposure better than asphalt-based adhesives.
Acrylic-Based Adhesives
Waterborne formulations with strong UV stability.
Often used for reflective roofing systems and cool roof coatings.
Silicone Adhesives & Sealants
Provide superior flexibility and longevity.
Excellent for flashing and penetrations, where movement is expected.
Factors That Affect Adhesive Longevity
UV Radiation
Kerala’s high solar intensity breaks down many adhesives—especially asphalt-based—leading to cracks.Moisture Exposure
Continuous monsoon rains test adhesive bonds, especially if detailing is poor.Thermal Cycling
Daily expansion and contraction stresses adhesives, leading to separation over time.Chemical Compatibility
Adhesives must be compatible with the roofing material—wrong chemistry can cause premature failure.
Adhesives in Roofing Applications
Shingle Installation – Asphalt shingles, including architectural and premium designer types, rely on adhesive strips that activate under heat.
Tile Roof Systems – Borja-Tech tiles and Alicantina 12 tiles may use adhesives in underlayment bonding.
Solar Roof Tiles – Tejas Borja solar tiles require adhesive detailing to ensure waterproofing around electrical penetrations.
Roof Accessories – Sealants from our roof accessory products ensure detailing around vents and flashing remains watertight.
Maximizing Adhesive Performance in Kerala
Choose UV-stable formulations (polyurethane, silicone, or acrylic).
Ensure adhesives are applied at correct temperatures to prevent weak bonds.
Pair adhesives with mechanical fastening for double protection.
Schedule regular inspections—especially after monsoon seasons.
Conclusion
The chemistry of roofing adhesives determines how well your roof withstands the test of time. Asphalt-based adhesives may provide affordability, but polyurethane, acrylic, and silicone adhesives offer superior flexibility, UV resistance, and longevity—making them better suited for Kerala’s demanding climate.
👉 At Scaffs India, we combine advanced adhesives with premium shingles, tiles, and accessories to deliver roofing systems that remain secure, watertight, and durable for decades. Explore our roofing projects or contact us to find the best roofing solution for your home.