SEAMLESS™
Technical Resources

Structural data.
No asterisks.

Third-party tested and code-evaluated by QAI Laboratories. Everything your engineer, architect, or building official needs to spec Seamless into a project with confidence.

Report No.
CERUS-1064
Issued by
QAI Laboratories
Applicable Codes
2024 / 2021 / 2018 IBC · IRC
CSI Section
06 11 13 — Engineered Wood Products
Allowable Axial Loads

Seamless Fascia Post — SPF

NDS 2024. Uniform concentric loading. Pin connections top and bottom. 6×6 and 8×8 cross-sections. Spans 6′–12′.

LRFD — Load Resistance Factor Design
Span
6×6
8×8
6'
1.8 m
60,000 lbs
27,200 kg
92,100 lbs
41,800 kg
8'
2.4 m
48,500 lbs
22,000 kg
85,800 lbs
38,900 kg
10'
3.0 m
35,200 lbs
16,000 kg
73,800 lbs
33,500 kg
12'
3.7 m
25,500 lbs
11,600 kg
58,700 lbs
26,600 kg
ASD — Allowable Stress Design
Span
6×6
8×8
6'
1.8 m
35,600 lbs
16,100 kg
53,800 lbs
24,400 kg
8'
2.4 m
30,300 lbs
13,700 kg
51,000 lbs
23,100 kg
10'
3.0 m
22,900 lbs
10,400 kg
45,500 lbs
20,600 kg
12'
3.7 m
16,800 lbs
7,600 kg
37,600 lbs
17,100 kg
Source: QAI Laboratories Code Evaluation Report CERUS-1064 · Seamless Post by CureWood Engineered Building Products Ltd. · Published January 2026. Evaluated per ASTM D5456 and ANSI/AWC National Design Specification (NDS) for Wood Construction. Factors applied: CD = 1.0 · CM = 1.0 · Ct = 1.0 · c = 0.9. Conditions outside these parameters require Engineering Design per the authority having jurisdiction.
Install Guide
Installation & Handling Guide →
Warranty
15-Year Limited Warranty →
Cert Report
Code Evaluation Report — CERUS-1064 →
Vertical-Use Performance

Seamless Cedar Timbers — Western Red Cedar

Section-area estimates for vertical-use applications using net Western Red Cedar area and conservative No.2 WRC timber design values.

Size
Net size
Net WRC area
Vertical-use indication
4×4
3-1/2″ × 3-1/2″
12.25 in²
Approx. 6,700 lb
6×6
5-1/2″ × 5-1/2″
24.00 in²
Approx. 13,200 lb
8×8
7-1/4″ × 7-1/4″
34.50 in²
Approx. 19,000 lb
Vertical-use indication is a section-area estimate using net Western Red Cedar area and a conservative No.2 WRC compression-parallel value of 550 psi. Final use is subject to project-specific design, connection details, installation conditions, and local code requirements. Vertical use indications not provided by QAI.
Quality System & Manufacturing Confidence
· Audited and inspected by QAI Laboratories

Each Seamless™ Cedar Timber is manufactured using the same disciplined production approach developed through CureWood's QAI-evaluated Seamless™ structural post program. This includes controlled adhesive application, adhesive performance checks, dimensional verification, routine quality checks, and ongoing manufacturing oversight.

For the Seamless™ Cedar Timber product line, that means the laminated seams, bonded faces, and assembled post geometry are produced under a controlled and repeatable manufacturing process designed to support long-term bond integrity and dimensional consistency. Builders, designers, and end users can have confidence that the product is not simply a decorative wrap, but an engineered cedar post manufactured with verified process controls and third-party quality oversight.

For vertical-use applications, the substantial net Western Red Cedar section provides a rational engineering basis for estimating compression performance using recognized #2/Btr Western Red Cedar timber design values. Final use, connection details, and project-specific loading should be reviewed by the project designer, engineer of record, or local authority having jurisdiction.

Install Guide
Installation & Handling Guide →
Warranty
25-Year Limited Warranty →
Spec Sheet
Vertical-Use Spec Sheet →

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