Truss Repair Done Right!

Damaged Roof Truss? Get It Field-Repaired or Permit-Ready with TrussSpec.

Whether you / someone cut a bottom chord for plumbing, ran into storm damage, have old broken members, or failed a framing inspection— Most times you don't need to replace the entire truss. Mr. Carpentry provides professional onsite structural truss and roof rafter repair services and TrussSpec for out-of-state clients or DIYer’s in need of a custom permit-pack ready for city submittal or just the specs needed for repair specification. These packages are perfect for DIYers, handymen, and DYI general contractors.

Choose Your Repair Path

1. Full Turnkey Truss Repair (We Do The Work) Starting at: TEXT FOR QUOTE

Best For: Homeowners & contractors wanting end-to-end execution.
What You Get: On-site shoring, precision temporary jacking, scab/gusset plate cutting, glue-and-nail structural sandwich installation, and site clean-up. Fully compliant with NDS and local residential building codes.

2. DIY & Contractor TrussSpec Package (PDF + Design Service) $300.00

Best For: DIYers, framers, and investors looking for the documents needed for city permits and to complete the repair themselves while saving on labor.
What You Get: A downloadable, job-specific Structural Truss Repair Field Specification PDF tailored to your exact damaged web, top chord, or bottom chord section.

Service Comparison

  
        Feature
        Turnkey On-Site Repair
        DIY / Contractor PDF Spec
      
        Field Measurements & Analysis
        Handled by our crew
        You send photos & span dimensions
      
        NDS / IBC Code Calculation
        Included
        Included
      
        Node Schematics & F-I-S Specs
        Provided
        Provided
      
        Fastener & Gusset Schedule
        Installed
        Detailed step-by-step layout
      
        Permit Submittal Ready
        Yes
        Yes (AHJ Ready)
      
        Turnaround Time
        Scheduled Crew Visit (1 day)
        24–48 Hour PDF Delivery

What’s Inside Your Custom Repair TrussSpec PDF?

Node-Numbered Truss Schematic: Clear 2D CAD visual mapping panel nodes, web locations, and damaged chord zones.
Feet-Inches-Sixteenths (F-I-S) Dimensioning: Precise layout lengths (FT-IN-16THS) so you measure and cut OSB/Plywood scabs once with zero guesswork.
Structural Load & Capacity Matrix: Complete calculation breakdown for Top Chord Live Load (TCLL), Bottom Chord Dead Load (BCDL), Combined Stress Index (CSI), and D/C Unity Ratios.
Fastener & Adhesive Schedule: Exact specs for OSB/Plywood scab thickness, nail gauge (0.131" x 2.5"), row counts, pitch spacing (2" o.c.), and structural adhesive standards (ASTM D3498 / PL Premium).
Shoring & Preparation Warnings: Clear guidance on load-relief shoring and gusset plate clearance shimming.

Inspection Notice: Building inspectors will red-flag field-modified or damaged trusses without structural detail documentation. Our spec sheets provide the technical rigor required to clear municipal framing inspections.

How the PDF Spec Service Works

Submit Your Specs: Send us 2–3 photos of the damage, total truss span, roof pitch, spacing, and distance of the break from the left heel.
We Run the Specs and Logic: We calculate member tension/compression forces, select the proper gusset plate overlay, and format the official spec detail.
Receive Your PDF: Download your job-specific repair package, buy your materials, build to spec, and hand the sheet directly to your building inspector (see a small example below).

Ready to fix your truss without the overhead of a Engineering Firms, General Contractors, etc?

Get Your Custom Truss Repair Spec Package Today

Truss Repair Specification

EXAMPLE — NOT FOR USE

Client Name: John Smith	Project Address / Job #: 1234 Main St, Job #2026-A
Truss Span: 30.0 Feet	Roof Pitch: 6.0 / 12
Damaged Location: Bottom Chord	Repair Standard: Double-Sided Structural Overlay

STRUCTURAL TRUSS REPAIR FIELD SPEC (1234 MAIN ST, JOB #2026-A): BOTTOM CHORD TENSION REPAIR

Repair Status: ✅ CAPACITY VERIFIED (NDS COMPLIANT)

Load Analysis: Tension = 1500.0 lbs | End Shear = 1500.0 lbs
• Scab Area = 4.67 sq ft (Clipped) | Fasteners = 96 Nails
• Scab Capacity = 11520.0 lbs | D/C Unity Ratio = 0.13

Design Load Matrix: TCLL: 30.0 PSF | TCDL: 10.0 PSF | BCDL: 10.0 PSF | DEFL: L/480

CSI TC: 0.51 | BC: 0.33 | WB: 0.38

Member Force Schedule: Top Chord (1-2 / 3-4): -1620.0 lbs (Comp) | Bottom Chord (7-8 / 6-7): +1500.0 lbs (Tens) | Web Diagonals (2-7 / 3-6): -675.0 / +525.0 lbs | Reaction (Supports 5 & 8): 1500.0 lbs

Preparation / Shoring: Shore and jack truss to level position to remove dead/live loads PRIOR to repair. Do not force.

Required Material: 3/4" APA Rated Structural OSB / CDX Plywood (Exposure 1)

Dimensions: Min 8.0' Length x Clipped Heel Height (Sandwich Both Sides)

Installation Method: Sandwich BOTH SIDES centered over break and clipped to top chord slope. Apply generous bead of structural adhesive (AFG-01 / ASTM D3498 compliant, e.g., PL Premium) to all contact faces prior to fastening.

⚠ GUSSET CLEARANCE WARNING: Scab overlaps factory joint. Install 3/8" structural plywood shims adjacent to metal connector plates to create a flush mounting surface before applying OSB scab.

Fastener Schedule: 10d Common Nails (Staggered 4" o.c.). Maintain minimum 3/4" edge distance. Clinch nails if protruding.

Loading (PSF)	CSI Matrix	Lumber Specification
TCLL: 30.0 PSF TCDL: 10.0 PSF BCDL: 10.0 PSF DEFL: L/480	TC CSI: 0.51 BC CSI: 0.33 WB CSI: 0.38 D/C RATIO: 0.13	TOP CHORD: 2x4 SPF No.2 BOT CHORD: 2x4 SPF No.2 WEBS: 2x4 SPF No.2 BRACING: Sheathed / 10' o.c.

Member Axial Force Schedule
Top Chord (1-2 / 3-4): -1620.0 lbs (Comp)	Bottom Chord (7-8 / 6-7): +1500.0 lbs (Tens)
Web Diagonals (2-7 / 3-6): -675.0 / +525.0 lbs	Reaction (Supports 5 & 8): 1500.0 lbs

REPAIR MANDATE: ATTACH 3/4" APA RATED PLYWOOD/OSB GUSSET (EXP 1) TO EACH SIDE OF TRUSS WITH ONE DOUBLE-ROW OF (0.131" x 2.5") COMMON NAILS SPACED 2" O.C. STAGGERED. APPLY ASTM D3498 CONSTRUCTION ADHESIVE TO ALL CONTACT FACES.

Disclaimer: Prescriptive repair detail generated in accordance with NDS and IBC structural framing conventions by a Licensed Residential Builder. Intended for field execution and preliminary plan submittal. Final engineering stamp by a licensed Professional Engineer (PE) may be required by local Authority Having Jurisdiction (AHJ).