Acrylic Patching Compound Built for Real-World Roof Repairs

When you need a fast, flexible fix that holds up—1881 delivers.

QUIK-SHIELD® 1881 is a high-performance, butter-grade acrylic patching compound formulated for pros who demand results on the job. Designed to seal, bond, and flex under pressure, it’s the field-tested go-to for filling gaps, joints, cracks, and seams on roofing substrates.

Engineered with 100% acrylic polymer resins, this water-based, non-toxic formula cures into a water-resistant membrane with serious staying power—even in harsh environments.

View of flat roof top, with spray foam insulation, in Mesa, AZ.

Why Roofers Choose Quik-Shield® 1881:

  • Extreme Flexibility
    Passes 180° bend over ½” mandrel at -5°F—holds strong where other patchers fail.
  • Fast, Clean Application
    Brush, trowel, or hand-apply. Smooth texture, butter-grade feel, and low mess.
  • Buildable & Reinforceable
    Compatible with polyester fabric for reinforced patching where needed.
  • Weather-Resistant
    Once cured, forms a durable membrane that resists water, shrinkage, and cracking.

Key Specs at a Glance:

Property Value
Base 100% Acrylic
Solids by Weight 77% (±2%)
Solids by Volume 66% (±2%)
Viscosity Brushable
Weight per Gallon 13.25 lbs
Color White (batch variation possible)
Packaging 2-gallon pail
SWD Insulation technicians insulating flat roof.
View of spray foam insulation installed on flat roof

Application Conditions:

Apply only when temps are above 60°F and rising. Avoid use before rain or freezing conditions, or on areas without positive drainage. For deep gaps, layer in multiple coats with full cure time between.

Where It Works:

  • Parapet wall cracks
  • Fastener seals
  • Flashing gaps
  • Seams and transitions
  • Joint repairs on abutting substrates

Whether you’re prepping for topcoat, doing a spot repair, or reinforcing tricky details—1881 is a reliable, go-to solution.

A Product That Reflects Our Values

At SWD, we don’t build for “good enough.” We build for performance. QUIK-SHIELD® 1881 is one of the many ways we put our core values into action—delivering a product that solves problems in the field, backed by decades of real-world insight and technical leadership.

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

Spray foam insulation installers, insulating building's flat roof.