— BELZONA 3000 SERIES

Belzona 3111

Flexible Membrane
FN10205IMPA CODE: 812351

A single-component, water-based, liquid-applied flexible membrane coating for long-term roof protection and waterproofing.

Belzona 3111

Overview

A cold-applied liquid coating for long-term roof protection, providing outstanding waterproofing and weatherproofing properties. This single-component, water-based roof coating bonds strongly to all types of roofing materials, follows even complex roof contours, and allows the surface to breathe due to its microporous structure.

The system incorporates a reinforcement sheet which allows easy and controlled build-up of coating thickness during application, while its outstanding elasticity enables it to accommodate roof movement and building expansion.

Thanks to its water-based, low-odor formulation, it can be applied in almost any location including schools, hospitals and public buildings. The system carries ENERGY STAR and ETA-Danmark (European Technical Assessment) certification and has been proven to provide effective roof protection for periods exceeding 25 years.

Benefits

Long-Term Roof Protection

Provides long-term roof protection and waterproofing for periods exceeding 25 years.

Microporous Membrane

Allows trapped moisture to escape while maintaining long-term weatherproofing protection.

Water-Based

Water-based, low-odor formulation helps reduce health and safety risks during application.

Lightweight

A lightweight system that does not impose excessive additional load on existing structures.

Excellent Adhesion

Bonds strongly to a wide range of rigid surfaces and roofing materials.

Outstanding Elasticity

Accommodates roof movement and building expansion.

Single Component

No mixing is required; it can be applied directly from the container by brush or roller.

Cold Cure

Applied and cured at ambient temperature without hot work.

Energy Saving

ENERGY STAR approved reflective fillers help reduce solar heat absorption and air-conditioning demand.

Applications

Application Areas
Roof Waterproofing & Leak Repair

Long-term waterproofing and weatherproofing of roof surfaces requiring reliable leak protection.

Gutters

Long-term repair and waterproofing of deteriorated and leaking gutters.

Glazing Bars & Flashing Areas

Sealing glazing bars, junctions and damaged or missing flashing details.

Joints, Seams & Upstands

Continuous weatherproofing and waterproofing of joints, seams and roof upstands.

Skylights, Chimneys & Vents

Weatherproof sealing around roof penetrations such as skylights, chimneys and vents.

Parapet Walls & Flat Roofs

Protection of parapet walls, flat roof areas and complex roof contours.

Tank Base Sealing

Flexible sealing at tank-to-foundation interfaces to help prevent water ingress.

Technical Data

TECHNICAL DATA
First Layer Dry Film Thickness10 mil (250 micron) including reinforcing sheet
Second Layer Dry Film Thickness6 mil (150 micron)
Total System Dry Film Thickness16 mil (400 micron)
Drying TimeWater resistant within 60 minutes under good drying conditions
Application LimitsMinimum surface temperature 41°F (5°C) and risingMaximum relative humidity 90%
Elongation — Unreinforced168% (7-day cure at 73.4°F / 23°C)
Elongation — ReinforcedCrosswise 57%Lengthwise 40%
Tensile Strength — Unreinforced250 psi (1.7 N/mm²)
Tensile Strength — ReinforcedCrosswise 582 psi (4.0 N/mm²)Lengthwise 1,110 psi (7.7 N/mm²)
Tear Strength — Unreinforced81 pli (14 N/mm)
Tear Strength — ReinforcedCrosswise 188 pli (33 N/mm)Lengthwise 213 pli (37 N/mm)
Accelerated WeatheringAfter 1,000 hours ASTM D4798: typical 167% elongation and 285 psi (2.0 N/mm²) tensile strength
Low Temperature FlexibilityASTM D522 at -26°C: mandrel bend < 0.5 in
Water Vapor TransmissionASTM D1653, unreinforced: 12.6 Perms after 14 days cure
Wet AdhesionGalvanized steel 2.9 pli (0.51 N/mm) • Concrete 3.2 pli (0.56 N/mm)APP Smooth 3.7 pli (0.65 N/mm) • SBS Granule 2.8 pli (0.49 N/mm)
MIXING & APPLICATION
Mixed FormThixotropic liquid — single component
ColorWhite and Light Gray
OdorVery slight ammoniacal
Density1.33 – 1.36 g/cm³
SolidsBy Weight 64 – 67%By Volume 51 – 54%
SolventWater
Viscosity28,000 – 48,000 cP at 73.4°F (23°C)
Freezing Point32°F (0°C)
Shelf Life5 years

Product Documents

Approvals

Certifications & Approvals
ENERGY STARApproved
Miami-Dade NOAApproved / compliant
ASTM D6083Compliant
ETA-DanmarkEuropean Technical Assessment

Videos