The moisture defense system

Tools, Fasteners and EXO Underlayments create a complete, long-lasting shield against moisture, giving your roof protection from the bottom up.

1. EXOSTK™ Peel & Stick Underlayment

A self-adhesive waterproof layer applied directly to the roof deck, creating a strong seal against moisture, especially in vulnerable areas like valleys, eaves, and around vents.

2. EXO Synthetic Underlayment

EXO Synthetic Underlayment is a protective layer installed on the roof deck that provides an extra barrier against moisture and the elements before the shingles are added.

3. NAILPAC® Cap Fasteners + CN100B Cap Nailer

Even the best underlayment won’t protect the roof deck unless it’s secured properly.

EXOSTK™ Peel &
Stick Underlayment:

  • This self-adhering underlayment can be installed along the edges of the roof and in vulnerable areas, or on the entire roof.
  • It blocks water from penetrating through ice dams, heavy rain, or shingle leaks.
  • EXOSTK bonds tight, seals around every nail, and holds strong in extreme heat and cold – keeping moisture out where it matters most.

EXO Synthetic
Underlayment:

  • Stronger, lighter, and more durable than old-fashioned tar paper.
  • It resists tearing, repels water and moisture, and is approved for use under all types of roof coverings.

NAILPAC® Cap Fasteners +
CN100B Cap Nailer

  • Firing 5 cap nails per second, the CN100B quickly and consistently fastens underlayment.
  • NAILPAC cap fasteners seal better than staples or nails alone, preventing moisture penetration while securing underlayment without damage.
  • NAILPAC has been tested and approved to withstand winds up to 180 mph.
  • Cap fasteners are required or recommended by most shingle manufacturers as best practice.

FORTIFIED ROOF™

STINGER NAILPAC and EXO Synthetic Underlayment products are designed to meet FORTIFIED Roof™ program standards, which means they’re built for the kind of weather that actually tests a roof. The Insurance Institute for Business & Home Safety created FORTIFIED to help homeowners get stronger roofs and better insurance rates. When you install STINGER systems, you’re giving your customers a roof that’s proven to handle high winds and severe weather.

Code-compliance

STINGER products are tested and approved to meet the industry standards that matter to your job. From ASTM requirements to Florida Product Approvals and Miami Dade County certification, we know code compliance isn’t optional. It’s how you protect your work, your reputation, and your customer’s investment.

we have you covered.

STINGER EXO Synthetic Underlayment and EXOSTK Peel & Stick Underlayment are backed by warranties that protect your work and give your customers peace of mind.

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