White Lightning masthead

Gutter, Lap and Flashing Projects

White Lightning® caulks, sealants for Special Jobs include top-performing products for sealing around gutters, lap joints and flashings.

Silicone Ultra

Gutter & Flashing Sealant

Gutter and Flashing Sealant
  • 100% silicone, low odor, high performance sealant
  • Superior adhesion to many surfaces
  • Provides a weathertight seal that remains flexible
  • Ideal for sealing gutters, flashing, downspouts, lap joints, roof vents & siding
Product Details


All Season Sealant

STORM BLASTER All season sealant
  • Super-elastomeric sealant
  • Ideal for exterior use in weather extremes
  • Can be applied to cold or wet surfaces
  • Excellent adhesion and flexibility
Product Details

Butyl Rubber


Butyl Rubber Caulk
  • For sealing exterior gutters, corrugated roofing, pipes, aluminum and vinyl siding, lap joints, flashing, roof vents and drain spouts
  • Provides an insulated, watertight seal
  • Remains flexible in temperature extremes
  • Minimal shrinking
Product Details

Product Recommendations: Note that the products displayed on this page are the most - but not the only - suitable products for this project. Other similar White Lightning products are likely to perform satisfactorily.