Home Services Project Types Projects Prefab Systems About Resources Contact

Timber Panelized Building System


Our Core System · Factory-Built Wall, Floor & Roof Panels · ICC-ES ESR-5709 · 2015–2024 IBC / IRC


Back to Prefab Systems
Our Core System

The Factory-Built Structural Platform

The Carve Panelized Building System is our core solution: factory-assembled, code-listed wood-framed wall, floor, and roof/ceiling panels that crane into place in days, not months. The platform is prefab-friendly and finish-agnostic — interior and exterior finish systems install directly onto it, and it is not limited to any particular material or system.

ESR-5709
ICC-ES Evaluation Report
Structural Panels
40 FT
Maximum
Panel Length
A–F
Seismic Design
Categories
Code Compliance

Listed Under U.S. Model Building Codes

ICC-ES Evaluation ESR-5709 — Prefab House Panel System (Div. 06 12 00, Structural Panels)
Model Codes 2024, 2021, 2018 & 2015 International Building Code® (IBC) and International Residential Code® (IRC)
State & Local 2025 California CBC & CRC (CA Supplement) · 2026 City of LA LABC & LARC (LADBS)
Permitted Use Load-bearing & non-load-bearing walls, floors, roof/ceilings — Type V (IBC); one- and two-family dwellings (IRC, engineered design)
Lateral Design Shear walls per IBC 2305 / AWC SDPWS, ASCE/SEI 7-16 §12.2-1 — SDC A–F
Panel Types & Dimensions

Four Panel Types

EW
Exterior Wall
4.6–9.4 in thick
4–40 ft wide
8–12 ft high
IW
Interior Wall
4.6–9.4 in thick
4–40 ft wide
8–12 ft high
RP
Roof / Ceiling
4.6–25 in thick
4–9 ft wide
4–40 ft long
Min. roof pitch 2%
FP
Floor
4.6–25 in thick
4–9 ft wide
4–40 ft long
Typical Exterior Wall Section

What's Inside Every Panel

1
Exterior Cladding
Jobsite, per IBC Ch. 14
2
Treated Battens
Ventilated rain screen
3
Water-Resistive Barrier
Per IBC 1403.2 (ESR-2252)
4
OSB / Plywood Structural Sheathing
PS 2 / PS 1, 9–15 mm, span rating 24/16
5
2×4–2×8 Studs + Glass / Rock Wool
Douglas Fir or SPF, 24″ o.c.; insulation 25–200 mm, R2–R5 zones
6
Fiber Cement Board Interior Face
ASTM C1186
7
Interior Finish
Per project spec — HPL, acoustic panels, tile, drywall, etc.
Exterior Wall
24″ o.c. stud spacing
≈ 200 mm
Overall thickness
≈ 42 kg/m²
Weight (project example)
≈ 160 mm
Interior wall thickness
≈ 264 mm
Floor thickness
Materials

What Every Panel Is Made Of

Framing Lumber Douglas Fir or SPF, Select Structural grade (AWC NDS values)
Engineered Lumber LVL per ESR-5553 / ASTM D5456 for large-span panels
Sheathing OSB (PS 2) or plywood (PS 1), 9–15 mm, span rating 24/16
Interior Boards Fiber cement board (ASTM C1186); gypsum at ceilings
Insulation Glass or rock wool, 25–200 mm — FSI ≤ 25, SDI ≤ 450 (ASTM E84)
WRB & Fasteners WRB per IBC 1403.2 (ESR-2252); nails ASTM F1667; Type W screws ASTM C1002
Openings Doors & windows factory-installed; headers, jack & king studs per IBC 2304.10
Factory Fabrication

Built in a Factory. Craned into Place.

Every panel is produced under ISO 9001 / 14001 / 45001 certified quality systems using automated CNC lines — then coded, packed container-optimized, and crane-set on site.

Automated sawing, kiln drying, lamination & five-axis CNC production lines
ICC-ES-inspected quality control program
100% FSC®, PEFC™, SFI® certified sustainably managed wood sourcing
Class B fire-treated via vacuum-pressure impregnation
Arsenic- and chromium-free preservative treatment (AWPA U1, CA/ACQ)
Walls with cladding & windows installed at factory; stairs, conduit, cabinetry pre-built per design
Factory fabrication
Site assembly
Packaging, Delivery & Site Assembly

From Factory to Foundation in Days

Container-optimized load plans with every component coded and packed to drawing dimensions. Export-compliant documentation included.

Panels crane-set with anchor bolts, holdowns, strap ties & connectors per approved documents
Field-spliced double top plate for structural continuity
Connections and foundation designed by a registered design professional
Special inspection per IBC Ch. 17
Jobsite cladding per IBC Ch. 14 / IRC Ch. 7; roofing per IBC Ch. 15 / IRC Ch. 9
Typical Applications

Where It's Used

Single-Family Homes & ADUs
Townhomes & Small Multi-Family (Type V)
Resort Cabins & Hospitality Units
Backyard Offices & Studios
Developer Communities & Infill Projects
Timber Modular Buildings (panels factory-assembled into full modules)
Design Support

From Concept to Panel Shop Drawings

Carve provides complete design assistance coordinated with your builder and engineer of record — so the structural system, panel production, and construction documents are all aligned from day one.

Floor plans and project layouts developed around the panelized system
3D renderings to confirm design intent before production
Permit-ready construction drawings for submission
Panel shop drawings — every panel coded to assembly sequence
Start a Conversation
Design support

Ready to Build with the Panelized System?

Tell us about your project — scope, site, schedule, and any drawings you have — and we'll outline how the Timber Panelized System can work for you.

Start Your Project View All Systems
Project inquiry