△
Safety Cue
Task-specific safety guidance for ordinary work hazards.
Chapter 13
Install Ridge Cap Shingles
Prepare a straight, evenly terminated ridge or hip line, select or fabricate compatible cap shingles, and install a fully covered, concealed-fastener ridge-cap system on a non-vented ridge, hip, or separate practice ridge, using the exposure, fastening, and overlap requirements of the approved product instructions.
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.
✋
Critical Safety Cue
Serious injury, fall, or major damage is possible.
⛑
Field Safety Cue
Practical work-area safety: footing, weather, housekeeping, and access.
▤
Code Alert
Local requirements vary. Verify permit, inspection, and jurisdictional rules.
▧
Manufacturer Cue
Follow product-specific instructions for materials, fastening schedules, and equipment.
▱
Measurement Cue
Slope, span, clearance, and reference-point guidance.
Job Overview
This chapter qualifies you to install a complete ridge-cap shingle system on a non-vented ridge, a hip, or a separate practice ridge assembly. The finished work product is a straight, fully covered ridge or hip line with concealed fasteners, manufacturer-compliant overlaps, and a documented inspection confirming alignment, exposure, side coverage, and terminal detail.
You will confirm the adjoining shingle fields terminate evenly and are secure, select or prepare compatible ridge-cap pieces, establish a starting end and centerline reference, fasten each cap through the designated zone so the next cap conceals the fastener, carry the overlap and exposure pattern through hip geometry changes, and complete the terminal detail with concealed or sealed fasteners.
Ridge caps are the final weather-shedding layer on the roof's highest lines. Every course of field shingles installed in Chapters 8 and 9 terminates here, and this chapter's work is the last opportunity to catch an uneven termination or a fastening defect before the ridge is closed.
Skills You Will Demonstrate
- RF-073 — Prepare the ridge line by verifying adjoining shingle-field termination and correcting only by approved methods.
- RF-074 — Cut or select ridge-cap shingles compatible with the field-shingle product and approved for the specific ridge or hip condition.
- RF-075 — Align cap shingles to centerline and exposure references established from the starting end.
- RF-076 — Fasten ridge caps through the designated zone using nails of the correct length for the required substrate penetration.
- RF-077 — Overlap caps by the specified amount so each cap conceals the fasteners of the piece beneath it.
- RF-078 — Inspect the finished ridge for alignment, exposure, side coverage, fastener concealment, sealing, and damaged tabs.
Where This Skill Fits
This chapter follows the asphalt-shingle field installed in Chapter 8 and the valley work in Chapter 9, and it depends on both roof planes terminating evenly at the ridge or hip. It also depends on the ridge-condition decision made before this work begins: a non-vented ridge is capped directly by this chapter, while a ridge carrying an exhaust-vent system is capped only after Chapter 14 installs the vent.
The completed ridge-cap system feeds directly into the Chapter 20 capstone, which installs ridge-cap shingles over a vent using the sequence this chapter and Chapter 14 establish together.
Scope and Intended Use
This chapter covers:
- confirming whether the ridge is non-vented or requires Chapter 14's ridge-vent system before capping
- inspecting adjoining shingle fields for equal termination, adequate coverage, and secure fastening
- selecting factory-made ridge caps or preparing cap pieces from approved shingles according to the product instructions
- establishing the starting end, centerline, and exposure references
- fastening caps through the designated zone with concealed-fastener overlap
- adjusting cap pieces gradually at hips or other geometry changes
- completing the final cap or terminal piece using the approved concealed-fastener or sealed-fastener detail
- inspecting the finished ridge and documenting the completed work
This chapter does not authorize the learner to:
- cap over a planned ridge-vent slot before the vent is installed; that sequence is governed by Chapter 14
- trim or repair field shingles beyond the approved correction method identified in this chapter; broader field-shingle defects are governed by Chapter 8 or Chapter 17
- cut a ridge-vent slot or perform any ventilation-system work; that work is governed by Chapter 14
- substitute an incompatible cap product, fastener, or sealant for the one identified by the roofing-system specification
Any ridge or hip section where the adjoining shingle fields fail this chapter's termination check must be corrected under the governing chapter before it receives ridge-cap shingles.
Reference Conventions
Establish these references before recording any finding, and use them consistently across the ridge-cap installation and inspection record.
| Term | Definition |
|---|---|
| Ridge | The uppermost horizontal line where two roof planes meet |
| Hip | The sloped line where two roof planes meet at an outside corner |
| Cap-shingle centerline | The reference line marking the center of the ridge or hip, used to keep cap shingles straight and evenly split between planes |
| Exposure | The portion of each cap shingle left uncovered by the next cap, set by the product instructions |
| Designated fastening zone | The area of each cap shingle where the manufacturer permits fasteners, positioned so the next cap conceals them |
| Terminal piece | The final cap at the end of a ridge or hip run, finished with a concealed-fastener or sealed-fastener detail |
| Non-vented ridge | A ridge capped directly without an underlying exhaust-vent system |
Ridge-Cap Installation Record
Before beginning installation, record the controlling documents and site identification directly on the ridge-cap installation record:
Project / address: ______ Cap-shingle product: ______ Ridge condition (non-vented / vented, per Chapter 14): ______
Date started: ____________ Installer name: ____________
Prerequisites
- Cap-shingle product instructions, approved use, exposure, fastener length, fastening zone, wind-direction requirement, seal requirement, and terminal-course detail obtained and confirmed current
- Adjoining shingle fields from Chapter 8 complete, with equal termination and secure fastening at the ridge or hip line
- Confirmation of whether the ridge is non-vented or requires Chapter 14's ridge-vent system before capping
- Roof-access and fall-protection systems from Chapter 2 in place and accepted for this work
- Weather conditions suitable for cap-shingle handling and sealing per the product instructions
Common Field Fundamentals
The ridge-cap system is the final layer in the shingle-lap water path established across every earlier chapter of the shingle field. Its job is to cover the exposed upper termination of both roof planes while keeping every fastener hidden beneath the next cap. That pattern — establish a reference, fasten in the concealed zone, cover with the next piece, repeat — governs the entire installation.
Ridge condition checkConfirm non-vented or Chapter 14 vent installed first
Field terminationVerify equal, secure termination of both adjoining roof planes
Starting endSet by prevailing wind or manufacturer-required direction
Centerline & exposureReference lines that keep caps straight and evenly split
Fastening zoneConcealed by the overlap of the next cap
Hip transitionsAdjust cap pieces gradually without splitting or distortion
Terminal pieceConcealed-fastener or sealed-fastener detail at the run's end
Reference methodEvery finding recorded against the manufacturer's cap-shingle instructions
Field Termination and Cap Preparation
Inspect the adjoining shingle fields for equal termination, adequate coverage, secure fastening, and a straight ridge line before selecting or preparing cap pieces. Trim or correct field shingles only by the approved method identified in Chapter 8 or Chapter 17. Select factory-made ridge caps or prepare cap pieces from approved shingles according to the product instructions, and reject cracked, overbent, cold-damaged, or incompatible cap pieces before installation begins.
RF-073 – RF-078
Ridge and Hip Cap Installation
Ridge-Cap Shingle Installation and Inspection Record
A. Finished-Work Specification
Deliverable: one continuous ridge or hip cap-shingle run installed from the confirmed starting end to the terminal piece, with centerline and exposure maintained throughout, fasteners concealed beneath each successive cap, hip geometry changes accommodated without splitting or distorting cap pieces, a completed terminal detail, and a documented inspection covering alignment, exposure, side coverage, fastener concealment, sealing, and damaged-tab condition.
B. Governing Documents
| Document | Confirmed Current | Notes |
|---|---|---|
| Cap-shingle product instructions | ||
| Approved use / exposure / fastening schedule | ||
| Terminal-course detail | ||
| Ventilation plan (ridge-vent status) | ||
| Roof plan / hip and ridge layout |
C. Acceptance Standards
| Check | Standard |
|---|---|
| Field termination | Adjoining shingle fields terminate evenly, with adequate coverage and secure fastening, before capping begins |
| Ridge-vent status | Confirmed non-vented, or Chapter 14 ridge-vent system installed and accepted before capping |
| Cap-piece condition | Free of cracks, overbending, cold damage, or incompatibility; defective pieces rejected before installation |
| Centerline and exposure | Marked before the first fastener and maintained within the manufacturer's tolerance along the full run |
| Fastening | Each cap fastened through the designated zone with nails long enough to penetrate the required substrate, fully seated |
| Overlap | Each cap conceals the fasteners of the piece beneath it by the specified overlap |
| Hip transitions | Cap pieces adjusted gradually at geometry changes without splitting or distortion |
| Terminal piece | Completed using the approved concealed-fastener or sealed-fastener detail |
| Finished ridge condition | Straight, fully covered, with no exposed fasteners, damaged tabs, or misaligned caps |
D. Required Project Sequence
- Review the cap-shingle product, approved use, exposure, fastener length, fastening zone, wind direction, seal requirements, and terminal-course detail. Confirm the product instructions are current and record the exposure, fastener length, and fastening zone on the installation record before proceeding.
- Confirm whether the ridge is non-vented or whether Chapter 14 must first install a ridge-vent system. Check the ridge condition against the approved ventilation plan and record the confirmed condition on the installation record.
- Do not cap over a planned ridge-vent slot before the vent is installed. If the ridge is designed for a vent system, stop this chapter's work at that ridge line and route to Chapter 14 before continuing.
- Inspect the adjoining shingle fields for equal termination, adequate coverage, secure fastening, and a straight ridge line. Walk the full length of the ridge or hip from an approved position and record any uneven termination or loose fastening as a deficiency.
- Trim or correct field shingles only by the approved method. Refer any correction beyond the approved method to Chapter 8 or Chapter 17 before capping the affected section.
- Select factory-made ridge caps or prepare cap pieces from approved shingles according to the product instructions. Use only the cutting method, dimensions, and bend pattern specified by the manufacturer when field-preparing caps.
- Reject cracked, overbent, cold-damaged, or incompatible cap pieces. Set aside defective pieces before staging the accepted caps for installation.
- Establish the starting end based on prevailing wind or the manufacturer's required direction. Record the confirmed starting end and direction on the installation record.
- Mark the cap-shingle centerline and exposure references. Snap the centerline along the full ridge or hip length and mark exposure intervals from the starting end before fastening any cap.
- Position the first cap with the specified overhang or end treatment. Align the first cap to the centerline and starting-end reference and verify overhang before fastening.
- Fasten through the designated zones with nails long enough to penetrate the required substrate. Use only the fastener length, quantity, and location specified by the product instructions, and seat each fastener flush without cutting the cap surface.
- Cover each fastener with the next cap by the specified overlap. Position each successive cap so the overlap fully conceals the fasteners of the piece beneath it, and verify concealment before moving to the next piece.
- Continue along the ridge or hip while maintaining centerline, exposure, and side coverage. Check alignment against the centerline and exposure marks at regular intervals rather than only at the end of the run.
- Adjust cap pieces gradually at hips or geometry changes without splitting or distorting them. Make small, incremental adjustments across several pieces approaching a hip intersection or ridge-line change rather than forcing a single piece to absorb the full geometry change.
- Prepare the final cap or terminal piece using the approved concealed-fastener or sealed-fastener detail. Use only the terminal method specified by the product instructions for the confirmed ridge or hip condition.
- Apply hand sealant only where required by the product or weather conditions. Use only the manufacturer-approved adhesive at the specified locations, and do not substitute sealant for a required fastener or overlap.
- Inspect alignment, exposure, side coverage, fastener concealment, sealing, end treatment, and damaged tabs. Walk the full completed run from an approved position and record every finding against the acceptance standards above.
- Replace defective or misaligned caps before adhesive strips seal. Correct any finding from Step 17 while the affected caps can still be lifted and repositioned without damage.
- Clean the ridge and roof planes of cutoffs and loose fasteners. Remove cutoffs, loose nails, and packaging from the ridge, hip, and adjoining roof planes before documenting completion.
- Document product, starting direction, exposure, fastening, terminal detail, and inspection results. Photograph the completed ridge or hip and attach the images and measurements to the installation record.
Common Ridge-Cap Installation Checks
Apply the same checks to every ridge and hip line, regardless of length or roof configuration.
- Ridge-vent status check: confirm the ridge is non-vented, or that Chapter 14's ridge-vent system is installed and accepted, before capping.
- Field-termination check: confirm both adjoining roof planes terminate evenly with adequate coverage and secure fastening.
- Centerline and exposure check: confirm centerline and exposure marks are established before the first fastener and held within tolerance along the full run.
- Fastener-concealment check: confirm every fastener is covered by the overlap of the next cap.
- Hip-transition check: confirm cap pieces are adjusted gradually at geometry changes without splitting or distortion.
- Terminal-detail check: confirm the final cap uses the approved concealed-fastener or sealed-fastener detail.
Complete the Ridge-Cap Inspection Record in the Inspection Checklist section below before closing out this chapter.
Image Placeholder
Image Placeholder
Image Placeholder
Image Placeholder
Image Placeholder
Image Placeholder
Failure Points and Troubleshooting
Cleanup
This chapter ends with a clean, fully covered ridge and an organized installation record, not loose cutoffs and unresolved fastener findings.
- Remove cutoffs, loose granules, and rejected cap pieces from the ridge, hip, and adjoining roof planes
- Collect and dispose of loose fasteners and packaging from the work area
- Store unused compatible cap pieces for later authorized repair work
- Compile the installation record, photographs, and inspection results into the project record
- Confirm the ridge or hip condition (non-vented, or vented per Chapter 14) is recorded before the project moves to the next chapter
Field Terms
- Ridge Cap
- The final row of shingles installed over a ridge or hip to cover and seal the termination of both adjoining roof planes.
- Cap-Shingle Centerline
- The reference line marking the center of the ridge or hip, used to keep cap shingles straight and evenly split between planes.
- Exposure
- The portion of each cap shingle left uncovered by the next cap, set by the product instructions.
- Designated Fastening Zone
- The area of each cap shingle where the manufacturer permits fasteners, positioned so the next cap conceals them.
- Terminal Piece
- The final cap at the end of a ridge or hip run, finished with a concealed-fastener or sealed-fastener detail.
- Non-Vented Ridge
- A ridge capped directly without an underlying exhaust-vent system.
- Hip
- The sloped line where two roof planes meet at an outside corner.
- Ridge
- The uppermost horizontal line where two roof planes meet.
Skill Check
- Why must the ridge-vent status be confirmed before any cap shingle is installed?
- What condition of the adjoining shingle fields must be verified before ridge-cap installation begins?
- Why must the cap-shingle centerline and exposure references be marked before the first fastener is driven?
- How does the overlap between successive cap shingles keep every fastener concealed?
- Why should hip-geometry changes be absorbed gradually across several cap pieces rather than forced into one piece?
- What distinguishes the terminal piece's fastening detail from the fastening method used along the rest of the run?
- What must a learner do upon finding a capped ridge-vent slot that was covered before the vent was installed?
- Why is hand-seal adhesive not an acceptable substitute for a required fastener or overlap?
- What six conditions must the final ridge inspection confirm?
- Why is the ridge cap considered the last opportunity to catch a field-shingle termination defect?
Competency Rubric
| Competency | Independent Pass Standard | Not Demonstrated | With Assistance | Independently |
|---|---|---|---|---|
| RF-073 | Verifies adjoining shingle-field termination and corrects only by approved methods before capping | |||
| RF-074 | Selects or prepares ridge-cap shingles compatible with the field product and approved for the specific ridge or hip condition | |||
| RF-075 | Aligns cap shingles to centerline and exposure references maintained across the full run | |||
| RF-076 | Fastens ridge caps through the designated zone with correctly sized, fully seated fasteners | |||
| RF-077 | Overlaps caps by the specified amount so every fastener is concealed by the next piece | |||
| RF-078 | Inspects and documents the finished ridge for alignment, exposure, side coverage, fastener concealment, sealing, and tab condition |
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 — Ridge-Cap Inspection Record
| Item | Condition Found | Correction Required | Corrected (Y/N) | Reinspection Result |
|---|---|---|---|---|
| Ridge-vent status confirmation | ||||
| Field termination (both planes) | ||||
| Cap-piece condition (rejects removed) | ||||
| Centerline / exposure alignment | ||||
| Fastener placement / seating | ||||
| Overlap / fastener concealment | ||||
| Hip transitions | ||||
| Terminal-piece detail | ||||
| Sealant (where required) | ||||
| Cleanup (cutoffs / loose fasteners) |
Ridge-cap completion decision: ______ (Complete / Conditional-Complete / Stop-Work) Date: ____________ Installer name: ____________
Performance Check
With the ridge-cap run complete, review the finished ridge and the Ridge-Cap Inspection Record against the Acceptance Standards table and confirm both adjoining shingle fields terminated evenly before capping, the ridge-vent status was correctly confirmed, every cap piece is free of cracking or distortion, centerline and exposure are maintained within tolerance along the full run, every fastener is concealed by the correct overlap, hip transitions were adjusted gradually, the terminal piece uses the approved detail, and the ridge and roof planes are clean of cutoffs and loose fasteners. If any item cannot be verified, record it as an open item and issue a conditional-complete decision rather than a full completion decision.
Chapter Closeout
You have completed the ridge-cap installation chapter: covering and sealing a ridge or hip line with the roof's final shingle layer. This chapter required you to verify field termination and correct only by approved methods (RF-073), select or prepare compatible cap shingles (RF-074), align caps to centerline and exposure references (RF-075), fasten each cap through the designated zone (RF-076), overlap caps to conceal every fastener (RF-077), and inspect and document the finished ridge (RF-078).
You now have a documented, straight, fully covered ridge or hip cap system that closes the shingle-lap water path established across the entire field-shingle installation. Where this ridge carries a designed exhaust-vent system, this chapter's work coordinates directly with Chapter 14's ridge-vent installation and the required cap-shingle fastening over the vent.
Store the completed installation record, photographs, and inspection results with the project record. The Chapter 20 capstone references this record when capping the shed's ridge over its installed vent system.