High-Performance Silicone Seam Sealer for Roof Repairs & Detail Work Professional-Grade Protection for Seams, Penetrations, and Fasteners

QUIK-SHIELD® Seam Sealer is a professional-grade silicone seam sealer and repair mastic designed to protect seams, penetrations, and fasteners across a wide range of roofing systems and architectural surfaces.

Once cured, it forms a durable, breathable, water-resistant barrier that resists degradation from ultraviolet exposure and natural weathering, making it ideal for long-term roof maintenance and repair applications.

Worker in protective gear applying spray foam insulation on a large sloped roof

Why QUIK-SHIELD® Seam Sealer 

  • Targeted Seam & Detail Protection
    Designed specifically for seams, penetrations, and fasteners, QUIK-SHIELD® Seam Sealer provides reinforcement where roofs are most vulnerable to leaks and failure.
  • Durable, Flexible Silicone Performance
    With strong tensile strength and controlled elongation, the cured material provides a resilient seal that can handle movement while maintaining integrity.
  • Weather & UV Resistance
    The cured silicone membrane resists degradation from sunlight, moisture, and environmental exposure, helping extend the life of roof systems.
  • Easy Application for Repairs
    QUIK-SHIELD® Seam Sealer is designed for straightforward field application using common tools, making it ideal for repairs, maintenance, and detailing work.

Key Specs at a Glance:

Property Value
Product Type Silicon seam sealer/repair mastic
Tensile Strength 305 ± 10 psi
Elongation 60% ± 10
Tear Resistance 25 ± 5 lbf/in
VOC <50 g/L
Solids by Weight 97% ± 2
Solids by Volume 91% ± 2
Tack-Free Time 2 hours
Dry to Touch 6 hours

All values are based on lab conditions at 77°F and may vary under field conditions.

Bird’s-eye view of a new retail plaza; each building is topped with reflective SWD Urethane spray foam roofing.
Spray foam insulation installers, insulating building's flat roof.

Application & Performance

QUIK-SHIELD® Seam Sealer is typically applied in a single application to achieve uniform coverage and proper seal integrity.

  • Tack-free in approximately 2 hours
  • Dry to touch in approximately 6 hours
  • Cure time varies based on temperature, humidity, and thickness

Recommended application:

  • Approximately 80–120 linear feet per application (depending on surface and conditions)
  • Must result in a continuous, void-free, pinhole-free seal

Application Guidelines

  • Do not apply below 40°F ambient temperature
  • Do not apply to wet or damp surfaces
  • Avoid application when rain is expected
  • Ensure all surfaces are free from dust, oil, mildew, or loose material
  • Asphaltic substrates may require a bleed-blocking primer to prevent discoloration

QUIK-SHIELD® Seam Sealer may be used in areas with ponded water, though proper drainage is recommended by industry standards.

Storage & Shelf Life

  • Store between 35°F and 75°F
  • Shelf life: 18 months (unopened containers)
  • Can be stored in unheated warehouses without risk of freezing
On-roof panoramic view across a vast SWD Urethane spray foam roof lined with HVAC evaporative coolers and skylights, mountains on the horizon.

Need Support or Have Questions?

Our technical team is just a call away. We’re with you from bid to build.

CALL: 888-380-2022