Exterior Panel Benefits

EF System Benefits

• Simple, economical and flexible fastening system
• Color matching or accent fasteners 
• Ideal for large format panels, planks, complex geometry 
• Easily adjusts around windows and other complicated geometry 
• Factory fabrication to any size, design with 48” x 96” in mind 
• Three panel types: Class A-285, Class A, Class B
• NFPA 285 compliant assembly using Class A-285 8mm panels 
• Exposed Fastening Miami-Dade County NOA#21-0722.02
• Florida Product Approval using Class A 10mm panels, FL27934
• FSC® (FSC-C115183) certification available

Stonewood 8mm, Class A panels attached with the EF system have received compliance certification for NFPA 285 fire test. Learn more about the configuration and details.

For Exposed (EF) System, a minimum distance of 3/8" must be
maintained between planks to accomodate hygrothermal movement.

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Field Kerfing Required Equipment   1. FREUD - 9/16” Depth Slotting Cutter Set (figure a) or equivalent   2. Hand Router (figure b) - minimum of 1hp or equivalent tool such as 3 wing slotting cutter (figure c)

Best Practice Field Kerfing Guidelines Insert slotting cutter tool into the hand router Use a manufactured kerf plank (figure d) as a set up guide to confirm tool height Place the blade in the kerf Set tool height Perform a test run on a scrap plank Speed rate for hand router: 1400-1800 RPMs Feed rate for hand router: 8-12 ft/min Kerf planks as required Maintain tolerances - planks arrive with a .415” kerf and field cut edges must be re-kerfed to 0.500”

Additional Requirements

1. Minimum width of finished plank is 3”
2. Maximum width of finished plank is 16”
3. Minimum plank length is 4”

Required Equipment Rabbeting   1. FREUD - 1/8”,1/4”, 5/16”, 3/8”, 7/16”, 1/2” Depth Rabbeting Bit Set with interchangable bearings (figure a) with 1/2” Shank or equivalent tool   2. Hand Router (figure b) - minimum of 1hp or equivalent tool

Best Practice Field Rabbeting Guidelines Insert rabbet cutter tool into the hand router Use a manufactured rabbet plank (figure c) as a set up guide to confirm tool height Use bearing designed to cut a 1/8” depth rabbet (figure d) Perform a test run on a scrap plank, once height is set Speed rate for hand router:1400-1800 RPMs Feed rate for hand router: 8-12 ft/min Rabbet as required Tolerances - planks will arrive with a 1/8” x 0.157” rabbet cut and the field cut planks must be re-rabbeted to 1/8” x 0.157”

Additional Requirements

1. Minimum width of finished plank is 3”
2. Maximum width of finished plank is 16”
3. Minimum plank length is 4”

Stonewood Exposed Fastener (EF) Overview

Solid phenolic core panels and exposed fastener system for use as open joint exterior cladding in a ventilated facade system. Panels attach to a one inch sub-framing system with exposed fasteners. Stonewood Architectural Panels are required to have unobstructed air flow behind the panels.

Exposed Fastening System Benefits:

• Economical and flexible fastening system.
• Use for all panel sizes.
• Color matching or accent fasteners add design disguise or accent.
• Flexible fabrication either on the job site or in factory.
• Easily adjusts around windows and other building variations.

Panel Material Composition

Stonewood is manufactured with a core of phenolic resin impregnated kraft paper and a decorative pattern. These layers are compressed at high pressure and temperature creating a highly durable, non-porous panel. The panel is further safeguarded by a UV-protective layer and a clear peel coat for shipping and handling.

The exposed panel edges and the horizontal reveals —between the panels—are the natural core of the phenolic panel.
As the natural core ages it will develop a patina, turning from dark grey to light grey.

Phenolic Benefits:

• Solid core phenolic panels are strong, highly durable, and impervious to moisture and bacteria.
• Non-porous surface is easy to clean and graffiti resistant.
• UV protective layer filters 99% of damaging UV rays.
• Suited for all construction types and climates.
• Fabricate in the field or factory.
• Self-edging or traditional edge treatments.
• Class A or B fire ratings.
• Optional FSC® (Forest Stewardship Council®) certification (FSC-C115183) 
• Made in America

Fabrication

Panels can be both field and factory fabricated.

Panel Sizes x 96"L

Design Offering

Over 300 colors are available in wood grains,abstract, and solids. View complete Design Offering and order samples here.

Technical and Environmental

Approvals:

• Passed NFPA 285
• Class A or Class B Fire Rating
• ICC-ES Approval
• Miami-Dade County NOA (Notice of Acceptance)
• Florida Product Approval FL27934
• NEMA Test Results
• ASTM D-790: Flexural Strength, Flexural Modulus

Click here for in-depth testing and report documents.