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Gutters and Roofing Flashings Course
More than 2 million students worldwide

Gutters and Roofing Flashings Course

Master every aspect of gutters and roofing flashings, from sizing and material selection to hands-on installation and repair. This course gives you the technical knowledge and practical skills to handle residential and commercial drainage systems with confidence. Whether you're entering the trade or sharpening your expertise, you'll finish ready to deliver work that holds up.

Dedika for businesses

What you will learn:

You'll learn how water moves across roof surfaces and why proper drainage design prevents costly structural damage. The course covers gutter profiles, materials, and sizing calculations, then moves into step-by-step installation techniques for gutters and all major flashing types. You'll develop diagnostic skills to identify failures and perform targeted repairs without unnecessary replacement. Commercial systems, low-slope roofs, and specialty applications are also covered. By the end, you'll know how to plan layouts, read rainfall data, meet code requirements, and hand over complete documentation to your clients.

How you study in practice Gutters and Roofing Flashings Course

How you practice Gutters and Roofing Flashings Course

For companies looking to train their teams

With Dedika for businesses, the course includes exercises and examples tailored to your own business and the way your company needs.

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Course Content

8 Chapters • 40 LessonsDuration between 4 and 360 hours (you decide)

Chapter 1See details

Foundations of Roofing and Drainage

  • Lesson 1 • Roof Anatomy and Terminology

    Covers standard roof components, slopes, and industry vocabulary. Establishes shared language used throughout all subsequent chapters.

  • Lesson 2 • Water Behavior on Roof Surfaces

    Explains how gravity, surface tension, and wind drive water movement across roofs. Connects water physics to gutter and flashing placement decisions.

  • Lesson 3 • Safety Fundamentals for Roof Work

    Establishes fall protection, ladder safety, and personal protective equipment requirements. Safe work habits introduced here apply to every hands-on chapter.

  • Lesson 4 • Drainage System Overview

    Introduces gutters, downspouts, and flashings as an integrated drainage system. Students understand how each component contributes to whole-roof water management.

Chapter 2See details

Gutter Materials and System Types

  • Lesson 1 • Sectional vs. Seamless Gutter Systems

    Contrasts sectional and seamless gutter construction methods, joint risks, and installation requirements. Students evaluate which system suits each project scope.

  • Lesson 2 • Gutter Material Properties

    Analyzes aluminum, steel, copper, vinyl, and zinc gutter materials by durability, cost, and climate suitability. Guides material selection for long-term performance.

  • Lesson 3 • Gutter Guards and Leaf Protection

    Reviews screen, micro-mesh, reverse-curve, and foam insert guard types. Students assess guard effectiveness and maintenance implications for each system.

  • Lesson 4 • Commercial and High-Capacity Systems

    Introduces box gutters, scuppers, and internal drain systems used on low-slope commercial roofs. Connects commercial drainage design to load and code compliance concepts.

  • Lesson 5 • Gutter Profile Styles

    Compares K-style, half-round, and box gutter profiles by capacity and application. Students match profile to roof type and aesthetic requirements.

Chapter 3See details

Gutter Sizing and Layout Planning

  • Lesson 1 • Calculating Roof Drainage Area

    Teaches horizontal projected area calculation for sloped roofs. Accurate area measurement is the foundation for all subsequent sizing decisions.

  • Lesson 2 • Layout Drawing and Documentation

    Guides students in producing dimensioned gutter layout drawings with component callouts. Documentation skills support accurate material takeoffs and client communication.

  • Lesson 3 • Gutter Sizing Calculations

    Applies flow rate formulas to determine minimum gutter cross-section for each roof plane. Students practice sizing K-style and half-round gutters using standard tables.

  • Lesson 4 • Rainfall Intensity and Design Storms

    Explains how to read rainfall intensity maps and select design storm values. Students apply local intensity data to size drainage components conservatively.

  • Lesson 5 • Downspout Sizing and Placement

    Determines downspout quantity, size, and spacing to match gutter capacity. Students learn maximum gutter run lengths and outlet spacing rules.

Chapter 4See details

Gutter Installation Techniques

  • Lesson 1 • End Cap and Outlet Installation

    Demonstrates fitting, sealing, and securing end caps and outlet tubes. Watertight end caps and outlets are critical leak prevention points.

  • Lesson 2 • Establishing Correct Gutter Slope

    Teaches chalk-line layout and slope calculation to ensure consistent water flow toward outlets. Proper slope prevents standing water and premature corrosion.

  • Lesson 3 • Cutting, Mitering, and Joining Sections

    Covers tin snips, miter saw, and notching techniques for accurate gutter cuts and corner joints. Precise cuts reduce leak risk at every joint and corner.

  • Lesson 4 • Hanger Types and Fastening Methods

    Compares spike-and-ferrule, hidden hanger, and strap hanger systems by load capacity and longevity. Students select and install hangers at correct spacing for each material.

  • Lesson 5 • Downspout Assembly and Attachment

    Guides assembly of elbows, straight sections, and straps to route downspouts to discharge points. Secure attachment prevents wind damage and wall staining.

Chapter 5See details

Flashing Materials and Types

  • Lesson 1 • Purpose and Principles of Flashing

    Defines flashing as a water-diverting barrier at roof transitions and penetrations. Students understand why flashing failure is a leading cause of roof leaks.

  • Lesson 2 • Self-Adhering and Flexible Flashings

    Covers rubberized asphalt, butyl, and EPDM self-adhering flashing tapes and membranes. Students apply flexible flashings where rigid metal cannot conform to complex geometry.

  • Lesson 3 • Penetration Flashing Components

    Covers pipe boots, vent collars, skylight curb flashings, and chimney flashing assemblies. Students identify each component and its role in a watertight penetration seal.

  • Lesson 4 • Metal Flashing Materials

    Compares galvanized steel, aluminum, copper, and lead flashing by corrosion resistance, workability, and compatibility. Material choice affects service life and maintenance frequency.

  • Lesson 5 • Flashing Profile Types by Location

    Identifies step, counter, base, valley, drip edge, and apron flashings by their roof location and function. Students select the correct profile for each transition type.

Chapter 6See details

Flashing Installation Techniques

  • Lesson 1 • Metal Flashing Fabrication Skills

    Teaches layout, scribing, cutting, and bending sheet metal using hand brakes and snips. Accurate fabrication is the prerequisite for every flashing installation task.

  • Lesson 2 • Drip Edge and Eave Flashing Installation

    Covers correct drip edge orientation, nailing pattern, and integration with underlayment at eaves and rakes. Drip edge is the first flashing installed and sets the baseline for all others.

  • Lesson 3 • Chimney and Skylight Flashing

    Guides complete chimney flashing assembly including base, step, saddle, and cap flashing. Skylight curb flashing sequence and sealant application are also covered.

  • Lesson 4 • Pipe Boot and Penetration Sealing

    Covers neoprene and metal pipe boot installation, collar sealing, and integration with surrounding shingles. Proper penetration sealing eliminates the most common source of roof leaks.

  • Lesson 5 • Step and Counter Flashing at Walls

    Demonstrates step flashing integration with each shingle course and counter flashing embedment in mortar or reglet. Correct sequencing prevents water infiltration behind the wall cladding.

  • Lesson 6 • Valley Flashing Installation

    Covers open metal valley, closed-cut valley, and woven valley methods with underlayment integration. Valley selection affects water capacity, appearance, and long-term wear.

Chapter 7See details

Inspection, Diagnosis, and Repair

  • Lesson 1 • Systematic Roof Inspection Protocol

    Establishes a structured inspection sequence from ground observation to close-up examination. A repeatable protocol ensures no failure point is overlooked.

  • Lesson 2 • Diagnosing Flashing Failures

    Covers separation, corrosion, improper lap, missing kickout, and sealant failure as flashing defects. Students use water testing and visual cues to pinpoint leak sources.

  • Lesson 3 • Gutter Repair Techniques

    Demonstrates resealing joints, re-sloping sections, replacing hangers, and patching holes in gutters. Repair selection is matched to failure severity and remaining material life.

  • Lesson 4 • Diagnosing Gutter Failures

    Identifies sagging, overflow, leaking joints, improper slope, and corrosion as common gutter failure modes. Students trace symptoms to root causes before selecting repairs.

  • Lesson 5 • Flashing Repair and Replacement

    Covers resealing, re-embedding, and replacing individual flashing components without disturbing surrounding roofing. Targeted replacement extends roof life at minimal cost.

Chapter 8See details

Quality Standards, Compliance, and Maintenance

  • Lesson 1 • Industry Standards and Code Compliance

    Reviews applicable building code drainage requirements, manufacturer specifications, and industry association standards. Students verify installations meet minimum performance and safety thresholds.

  • Lesson 2 • Quality Control During Installation

    Establishes checkpoints for slope verification, joint integrity, and flashing overlap during installation. In-process quality control prevents costly post-installation failures.

  • Lesson 3 • Client Reporting and Handover

    Guides preparation of inspection reports, as-built documentation, and maintenance instructions for clients. Clear handover documentation builds client trust and reduces callback disputes.

  • Lesson 4 • Preventive Maintenance Programs

    Designs seasonal maintenance schedules covering cleaning, inspection, and minor repair tasks. Proactive maintenance extends system life and reduces emergency repair costs.

  • Lesson 5 • Warranty, Liability, and Risk Management

    Covers workmanship warranty terms, material warranty limitations, and liability exposure for drainage failures. Students identify risk mitigation practices that protect both contractor and client.

Certification

Your valid completion certificate

This course is for you:

  • Roofer: wants to add drainage expertise to existing field skills.

  • General contractor: needs reliable knowledge of flashing and gutter systems.

  • Home inspector: seeks deeper understanding of drainage failure indicators.

  • Career changer: entering the trades and building a specialized skill set.

  • Remodeling contractor: handles full exterior projects including roof transitions.

  • Ambitious DIYer: tackling a major home drainage overhaul with confidence.

What our students say

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