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Safety Cue
Task-specific safety guidance for ordinary work hazards.
Chapter 17
Repair Damaged Shingles
Identify damaged asphalt shingles, release the surrounding courses without tearing them, remove and replace the damaged shingles using matching product and the original fastening and sealing pattern, and inspect the completed repair for exposure, alignment, and water-control continuity.
Field Cue System
These cues appear at the point of work. They identify safety, code, manufacturer, and measurement issues before they become rework or hazards.
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Critical Safety Cue
Serious injury, fall, or major damage is possible.
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Field Safety Cue
Practical work-area safety: footing, weather, housekeeping, and access.
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Code Alert
Local requirements vary. Verify permit, inspection, and jurisdictional rules.
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Manufacturer Cue
Follow product-specific instructions for materials, fastening schedules, and equipment.
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Measurement Cue
Slope, span, clearance, and reference-point guidance.
Job Overview
This chapter qualifies you to remove and replace one or more damaged asphalt shingles without damaging the surrounding roofing, underlayment, flashing, or deck. The finished work product is a repaired shingle field in which the replacement shingle or shingles match the surrounding course exposure, joint offset, fastening, and sealing, with the underlying deck and underlayment left intact or restored under an approved reference where minor repair was authorized.
You will identify the exact damaged shingles, determine whether the damage is isolated or evidence of a larger problem, inspect the attic or underside where accessible, select matching replacement shingles, release the adhesive bond and fasteners on the courses above the damage without tearing reusable shingles, remove the damaged shingle without cutting the underlayment or disturbing adjacent flashing, install and fasten the replacement shingle, refasten any disturbed upper shingles, hand-seal the repair, and document the repair location, cause, and inspection results.
This chapter depends on the shingle-installation and fastening knowledge built in Chapters 6 through 9 and on the flashing-integration knowledge built in Chapters 10 through 12. It also feeds directly into Chapter 18, where a damaged or improperly repaired shingle is one of several possible sources of a traced leak, and into Chapter 19, where damage that extends into the deck is handled under a larger structural repair scope.
Skills You Will Demonstrate
- RF-097 — Identify damaged shingles and distinguish isolated damage from evidence of a larger deck, flashing, wind, heat, impact, or installation problem.
- RF-098 — Loosen surrounding tabs and release adhesive bonds and fasteners on the courses above the damaged shingle without tearing granule surfaces or creasing reusable shingles.
- RF-099 — Remove damaged shingles without cutting the underlayment or disturbing adjacent flashing.
- RF-100 — Install replacement shingles aligned with course exposure and joints, fastened through the approved fastening zone with the specified nail quantity and location.
- RF-101 — Seal the repair area using compatible hand-seal adhesive at the manufacturer-required tab locations without smearing sealant onto exposed surfaces.
- RF-102 — Inspect the completed repair for exposure, alignment, joint offset, fastener concealment, tab adhesion, granule condition, and color variation.
Where This Skill Fits
Every roof eventually shows isolated shingle damage from wind, impact, heat cycling, foot traffic, or an installation defect that was not caught during the original field-shingle work in Chapters 8 and 9. This chapter gives you the controlled procedure for correcting that isolated damage without disturbing the water-shedding order established in the earlier chapters — releasing shingles from the top down, replacing only what is damaged, and restoring the same lap and fastening pattern.
This chapter is also the first stop when isolated damage is suspected but a leak has not yet been traced. If the inspection in this chapter reveals evidence of a larger problem — widespread uplift, brittle roofing, active leakage, or structural movement — the work stops here and moves to the diagnostic procedure in Chapter 18 or the structural repair procedure in Chapter 19.
Scope and Intended Use
This chapter covers:
- identifying the exact damaged shingles and confirming whether the damage is isolated
- inspecting the attic or underside where accessible for leakage, deck damage, and missed fasteners
- selecting matching replacement shingles of the same approved product, size, exposure, and compatible color where available
- releasing the adhesive bond and fasteners on the courses above the damaged shingle without tearing or creasing reusable material
- removing the damaged shingle without cutting the underlayment or disturbing adjacent flashing
- inspecting the exposed underlayment and deck for concealed defects
- installing and fastening the replacement shingle, refastening disturbed upper shingles, and hand-sealing the repair
- documenting the repair location, cause, materials, concealed conditions, and inspection results
This chapter does not authorize the learner to:
- proceed with a shingle repair when the damage includes widespread uplift, brittle roofing, active leakage, structural movement, or hazardous materials; stop and expand the investigation instead
- perform any underlayment repair beyond an approved minor repair; refer deck or extensive underlayment damage to Chapter 19
- trace an undiagnosed leak to its source; that procedure is covered in Chapter 18
- substitute a non-matching shingle product, size, or exposure, or apply sealant as a substitute for correct fastening and lap restoration
Any repair location where the investigation reveals damage beyond isolated shingle failure must be referred to the applicable chapter or responsible authority before the shingle repair proceeds.
Reference Conventions
Establish these references before recording any finding, and use them consistently across the repair record.
| Term | Definition |
|---|---|
| Isolated damage | Damage confined to one or a small number of shingles with no evidence of a broader deck, flashing, wind, heat, or installation problem |
| Release course | The course of shingles immediately above the damaged shingle whose adhesive seal and fasteners must be released to permit removal |
| Fastening zone | The manufacturer-designated area of a shingle where fasteners are placed and where the next course's tabs conceal them |
| Hand-seal adhesive | Compatible adhesive applied at manufacturer-required tab locations to restore adhesive sealing disturbed by the repair |
| Reusable shingle | An existing shingle from the release course whose adhesive bond and fasteners are released without tearing or creasing, permitting it to be repositioned over the replacement |
| Repair record | The documentation identifying repair location, cause, materials, concealed conditions, and inspection results |
Repair Record
Before beginning the repair, record the controlling references directly on the repair-record documentation form:
Project / address: ______ Roof plan reference: ______ Original shingle product / lot (if known): ______
Date started: ____________ Technician name: ____________
Prerequisites
- Shingle product instructions, repair instructions, weather limits, sealant requirements, and matching-material availability confirmed before beginning
- Compliant roof-access and fall-protection system already established and accepted for the site
- Chapter 1 roofing-readiness record and Chapter 8/9 field-shingle competencies completed
- Weather conditions suitable for shingle handling; work stopped for conditions that would cause cracking or unsafe footing
- Repair-record documentation forms available before starting
Common Field Fundamentals
A shingle repair follows the same top-down release and bottom-up restoration logic used throughout the book: the layer that sheds water onto the damaged shingle must come off first and go back on last. Skipping that order — for example, prying out a damaged shingle without first releasing the course above it — tears reusable material and can create a reverse lap that the repair itself introduces.
Damage typeCracked, torn, missing, curled, or granule-stripped shingle
Release courseCourse directly above the damaged shingle; seal and fasteners released first
Fastening zoneManufacturer-designated nailing area on the replacement shingle
Joint offsetReplacement joint must match the surrounding course pattern
Underlayment / deckInspected once exposed; concealed defects referred to Chapter 19
Hand-seal locationsManufacturer-required tab points sealed after fastening
Color / lot blendMatching product and compatible color where available
Reference methodEvery finding recorded against the original product and fastening schedule
Identifying Isolated Damage vs. a Larger Problem
Identify the exact damaged shingles and determine whether the damage is confined to those shingles or is evidence of a larger deck, flashing, wind, heat, or installation problem. Inspect the attic or underside where accessible for leakage, deck damage, and missed fasteners before proceeding with the physical repair.
RF-097 – RF-102
Shingle Repair / Restoration of Water-Control Layers
Damaged-Shingle Removal and Replacement
A. Finished-Work Specification
Deliverable: one or more damaged shingles removed without cutting the underlayment or disturbing adjacent flashing, matching replacement shingles installed and fastened through the approved fastening zone, all disturbed upper shingles refastened, hand-seal adhesive applied at required tab locations, and one completed repair record documenting location, cause, materials, concealed conditions, and inspection results.
B. Governing Documents
| Document | Confirmed Current | Notes |
|---|---|---|
| Original shingle-product instructions | ||
| Approved fastening schedule | ||
| Repair instructions / manufacturer repair detail | ||
| Roof-access and fall-protection record (Chapter 2) | ||
| Prior repair or inspection records |
C. Acceptance Standards
| Check | Standard |
|---|---|
| Damage classification | Confirmed isolated before proceeding; widespread uplift, brittle roofing, active leakage, structural movement, or hazardous materials referred out |
| Replacement shingle | Same approved product, size, exposure, and compatible color where available |
| Underlayment and deck (once exposed) | Free of punctures, moisture, rot, loose fasteners, and concealed defects, or referred to Chapter 19 |
| Replacement fastening | Through the approved fastening zone, specified nail quantity and location, flush seating without granule damage |
| Exposure and alignment | Matches surrounding course exposure and joint offset |
| Refastened upper shingles | Every fastener removed during release is replaced before the repair is closed |
| Hand-seal adhesive | Applied at manufacturer-required tab locations without smearing onto exposed surfaces |
| Repair record | Location, cause, materials, concealed conditions, and inspection results documented and signed |
D. Required Project Sequence
- Review the shingle product, repair instructions, weather limits, sealant requirements, matching-material availability, and roof-access controls. Confirm the original product identification where available and record it on the repair record.
- Identify the exact damaged shingles and determine whether damage is isolated or evidence of a larger deck, flashing, wind, heat, impact, or installation problem. Mark the damaged shingles and the surrounding area, and record the observed damage type for each.
- Inspect the attic or underside where accessible for leakage, deck damage, and missed fasteners. Use the attic or another interior access point and a flashlight, and record any finding against the framing or grid reference established in Chapter 1.
- Stop work and expand the investigation if the damage includes widespread uplift, brittle roofing, active leakage, structural movement, or hazardous materials. Route the finding to the Chapter 18 diagnostic procedure, the Chapter 19 structural repair procedure, or another responsible authority before continuing this chapter's repair.
- Select replacement shingles of the same approved product, size, exposure, and compatible color where available. Record the replacement product identification on the repair record.
- Mark the replacement limits and identify the courses whose adhesive seals and fasteners must be released. Mark the release course directly above each damaged shingle using chalk visible from the working position.
- Warm or condition shingles only by an approved method when cold or brittle conditions would cause cracking. Do not proceed with tab lifting on a shingle that resists lifting without conditioning.
- Carefully lift the tabs in the courses above the damaged shingle using the specified flat tool. Work from a stable position and lift only the tabs identified in Step 6.
- Release the adhesive bonds without tearing granule surfaces or creasing reusable shingles. Work the flat tool along the adhesive line rather than prying upward against the tab.
- Remove or raise the fasteners that secure the damaged shingle and any fasteners from the course above that block removal. Record each fastener location removed so it can be restored in Step 16.
- Slide the damaged shingle out without cutting the underlayment or disturbing adjacent flashing. Work the damaged shingle free from its exposed edge and stop if it does not release cleanly; re-check for a missed fastener rather than forcing it.
- Inspect the exposed underlayment and deck for punctures, moisture, rot, loose fasteners, or concealed defects. Record every finding, including its exact location relative to the repair.
- Complete only approved minor underlayment repairs; refer deck damage to Chapter 19. Do not proceed with the shingle replacement over an unresolved deck or major underlayment defect.
- Slide the replacement shingle into the original position and align it with course exposure and joints. Confirm the replacement matches the horizontal exposure line and the joint offset of the surrounding course before fastening.
- Fasten the replacement through the approved fastening zone using the specified nail quantity and location. Seat each fastener flush without cutting the shingle surface or leaving a raised head.
- Refasten any upper shingles whose nails were removed. Use the fastener locations recorded in Step 10 and confirm each is seated to the same standard as Step 15.
- Apply compatible hand-seal adhesive at the manufacturer-required tab locations. Apply only the quantity and location specified by the manufacturer's repair instructions.
- Press tabs into position without smearing sealant onto exposed surfaces. Confirm each tab lies flat against the course below before releasing pressure.
- Inspect exposure, alignment, joint offset, fastener concealment, tab adhesion, granule condition, and color variation. Compare the repair to the surrounding field shingles from a safe position.
- Remove debris and document repair location, cause, materials, concealed conditions, and inspection results. Attach photographs to the repair record and file it with the project record.
Common Repair Checks
Apply the same checks to every damaged-shingle repair, regardless of the number of shingles involved.
- Classification check: confirm the damage is isolated before proceeding, or route the finding to Chapter 18 or Chapter 19.
- Product-match check: confirm the replacement shingle matches the original product, size, exposure, and compatible color where available.
- Release check: confirm the release course was lifted and released without tearing granule surfaces or creasing reusable shingles.
- Concealed-condition check: confirm the exposed underlayment and deck were inspected and any finding was corrected or referred to the correct authority.
- Fastening check: confirm the replacement and every refastened upper shingle are seated flush in the approved fastening zone.
- Sealing check: confirm hand-seal adhesive was applied only at required locations without smearing onto exposed surfaces.
- Documentation check: confirm the repair record, photographs, and inspection results are complete before closing the repair.
Complete the Shingle Repair Record in the Inspection Checklist section below before closing out this repair.
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Failure Points and Troubleshooting
Cleanup
This chapter ends with a documented, matched, and sealed repair, not loose cutoffs and unresolved fasteners on the roof.
- Remove the damaged shingle, cutoffs, and released fasteners from the roof surface and gutters
- Dispose of removed material using an approved method that does not discharge material from the roof edge or the ground below
- Store any unused matching replacement shingles for future repairs at the same roof
- Compile the repair record, photographs, and inspection results into the project record
- Note the repair location on the roof sketch or readiness record established in Chapter 1 for future reference
Field Terms
- Isolated Damage
- Damage confined to one or a small number of shingles with no evidence of a broader deck, flashing, wind, heat, or installation problem.
- Release Course
- The course of shingles immediately above the damaged shingle whose adhesive seal and fasteners must be released to permit removal.
- Fastening Zone
- The manufacturer-designated area of a shingle where fasteners are placed and where the next course's tabs conceal them.
- Hand-Seal Adhesive
- Compatible adhesive applied at manufacturer-required tab locations to restore adhesive sealing disturbed by the repair.
- Reusable Shingle
- An existing shingle from the release course whose adhesive bond and fasteners are released without tearing or creasing, permitting repositioning over the replacement.
- Repair Record
- The documentation identifying repair location, cause, materials, concealed conditions, and inspection results.
Skill Check
- What conditions during this chapter's inspection require you to stop and expand the investigation rather than complete an isolated shingle repair?
- Why must the release course above the damaged shingle be lifted and released before the damaged shingle is removed?
- What must be true of a replacement shingle before it is considered an acceptable match?
- What must a learner do upon finding a puncture, moisture, or concealed defect in the underlayment exposed by shingle removal?
- Why must every fastener removed from an upper shingle during release be replaced before the repair is closed?
- Where must hand-seal adhesive be applied, and what condition must be avoided when applying it?
- What seven conditions must the completed repair be inspected against before it is documented as complete?
- Why should a cold or brittle shingle be conditioned by an approved method rather than forced during tab lifting?
- What is the difference between a repair this chapter authorizes and one that must be referred to Chapter 18 or Chapter 19?
- Why does the repair record created in this chapter matter to later inspections of the same roof?
Competency Rubric
| Competency | Independent Pass Standard | Not Demonstrated | With Assistance | Independently |
|---|---|---|---|---|
| RF-097 | Correctly identifies damaged shingles and distinguishes isolated damage from evidence of a larger problem, referring the latter to the correct chapter or authority | |||
| RF-098 | Loosens surrounding tabs and releases adhesive bonds and fasteners without tearing granule surfaces or creasing reusable shingles | |||
| RF-099 | Removes damaged shingles without cutting the underlayment or disturbing adjacent flashing | |||
| RF-100 | Installs replacement shingles matching exposure and joint offset, fastened through the approved zone with the specified nail quantity and location | |||
| RF-101 | Applies compatible hand-seal adhesive at required tab locations without smearing sealant onto exposed surfaces | |||
| RF-102 | Inspects the completed repair for exposure, alignment, joint offset, fastener concealment, tab adhesion, granule condition, and color variation, and documents results |
Mark one column per competency. Only Demonstrated Independently awards the competency; Demonstrated with Assistance authorizes additional supervised practice but does not complete the requirement.
Inspection Checklist — Shingle Repair Record
| Item | Condition Found | Correction Required | Corrected (Y/N) | Reinspection Result |
|---|---|---|---|---|
| Damage classification (isolated / referred) | ||||
| Attic / underside inspection | ||||
| Replacement product match | ||||
| Release-course condition | ||||
| Exposed underlayment / deck condition | ||||
| Replacement fastening | ||||
| Refastened upper shingles | ||||
| Hand-seal adhesive application | ||||
| Exposure / alignment / color match |
Repair disposition: ______ (Complete / Referred to Chapter 18 / Referred to Chapter 19) Date: ____________ Technician name: ____________
Performance Check
With the repair complete, review the repair record against the Acceptance Standards table and confirm the damage was correctly classified as isolated, the attic or underside was inspected, the replacement product matches the original in size, exposure, and compatible color, the release course was lifted without tearing or creasing, the exposed underlayment and deck were inspected and any finding corrected or referred, the replacement and refastened upper shingles are seated flush in the approved fastening zone, hand-seal adhesive was applied only at required locations, and the completed repair matches the surrounding field in exposure, alignment, and color. Sign and date the repair record before considering the location closed.
Chapter Closeout
You have completed a controlled shingle repair: identifying damaged shingles and distinguishing isolated damage from a larger problem (RF-097), releasing surrounding tabs without damage (RF-098), removing the damaged shingle without disturbing the underlayment or flashing (RF-099), installing and fastening a matching replacement (RF-100), sealing the repair at the required tab locations (RF-101), and inspecting and documenting the completed repair (RF-102).
You now have a documented repair record that fixes the repair location, cause, and inspection results for this section of roof. That record supports any future inspection of the same location and feeds directly into Chapter 18 if a leak is later traced near this repair, or into Chapter 19 if deck-level damage is discovered at a different location.
Store the completed repair record and photographs with the project record. Reference this record if a future leak investigation traces to this location.