Technical Information

Architectural specifications, warranties, overhang requirements, finishing guides, and fire/STC ratings.

Warranties & Exterior Overhang Protection

Coverage terms, warp tolerances, exclusions, and required roof overhang formulas for Hardwood and Environmental (MDF) doors.

Term / Parameter	Hardwood Doors (Solid Wood)	Environmental Doors (Recycled MDF)
Residential Term	2 Years — Custom Solid Hardwood Doors	Limited Lifetime — Factory-primed Environmental MDF Doors
Unprimed / Commercial	Residential applications from date of shipment (Phoenix, AZ).	1 Year Limited for unprimed or commercial doors (unprimed doors must be primed on all 6 surfaces immediately after acclimating).
Warp Tolerance (Max 1/4")	Not considered a defect if warp ≤ 1/4" in plane of door: 1 3/8" thick: up to 3'0" × 7'0" 1 3/4" thick: up to 3'6" × 8'0" 2 1/4" thick: up to 4'0" × 8'0"	Not considered a defect if warp ≤ 1/4" in plane of door for any door up to 4'0" × 8'0" × 1 3/4".
Oversized Door Rules	Larger than 3'6" × 8'0": min 2 1/4" thick Wider than 3'6": min 2 vertical rows of panels 4'0" and wider: min 3 vertical rows of panels	Standard maximum size 4'0" × 8'0" (fire-rated doors require compliance with ITS machining specs).
Exclusive Remedy	At EDC's option: (1) repair the door, (2) ship a replacement door in the same condition of fitting/finishing as originally sold, or (3) refund the original purchase price. EDC never pays for labor, installation, removal, or finishing costs.

Unsealed Surfaces: Failure to equally seal/finish all 6 surfaces (front, back, top, bottom, and both side edges) immediately after fitting and hanging.
Missing Overhang Protection: Exterior installation without adequate overhang protection from direct sunlight and precipitation.
Frame & Hardware Issues: Bow or misalignment in the frame/jamb, or improper hardware mortising/sizing.
Storm Door Heat Buildup: Extreme thermal buildup behind an unvented storm door (storm doors must be vented).
Finish & Wood Variations: Natural variations in wood color, density, or grain texture; or unsatisfactory gloss/texture from non-EDC finishes.
Misuse & Geography: Misuse, accidents, acts of nature, failure to follow care instructions, doors used as gates, or doors shipped outside the US or Canada.

Pre-Installation Inspection: Report all visible defects or shipping mistakes to EDC before trimming or hanging; otherwise the door is deemed accepted.
Original Purchaser Only: Coverage applies only to the original purchaser of the door or initial structure and is non-transferable.
Written Claim Submission: Submit claims in writing within the warranty period and before starting any repairs to:
Executive Door Company, 3939 W. Clarendon Ave., Phoenix, AZ 85019
Required Claim Info: Include purchase date and location, detailed problem description, and claimant name, address, and phone number.
Field Inspection: EDC must be granted a reasonable opportunity for an authorized representative to inspect the door on site.

Warranty Requirement: All exterior Hardwood and Environmental doors must be protected by an adequate roof overhang to shield against direct Desert Southwest sun and moisture.
Projection Calculation: Measure height Y (from bottom of door to bottom of overhang) to determine minimum overhang projection X (outward from the door face):
- North Exposure: Overhang projection X = 1/2 × Y
- South, East & West Exposures: Overhang projection X = Y to 2Y depending on climate severity
Color & Heat Management: Where overhang depth is limited, finish exterior doors in a light color to minimize thermal absorption.

Required Overhang Projection Relative to Door Height & Exposure

20–90 minute fire-rated Environmental MDF specifications, ITS/Warnock Hershey labeling, machinist forms, and ASTM E 90 STC acoustic ratings.

Eligible Door Models: Virtually any 1 3/4" Environmental (MDF) door with standard raised or flat panels up to 4'0" × 8'0" is available as a 20-minute fire door (45, 60, and 90-minute ratings available on eligible models; raised molding options supported).
Core & Edge Construction: Built with a fire-resistant core, solid wood stile edge strips, and 1" top and bottom rails.
Ineligible Configurations: Soft arch doors, full arch doors, and double doors are not available as 20-minute Environmental Fire Doors.
Option 1 — Fire Stamped (ITS Licensees): Firms holding an active Intertek Testing Services (ITS) fire-door machining license may order doors Fire Stamped and machine them in-house per ITS license rules.
Option 2 — Fire Labeled (Warnock Hershey): Any firm may specify Fire Labeled doors; EDC machines the door to your specifications within ITS license parameters and attaches the Warnock Hershey fire label.
Authorized Machinist Application: To become an authorized machiner of EDC fire-core doors, complete the Fire Door Machinist Letter (PDF) and send to customerservice@executivedoor.com or fax to 602-272-9460.

20-Minute Environmental Fire Door Cross-Section & Core Diagram

Acoustic Metric	Laboratory Test Specification
Achieved Rating	STC 30–35 (35 STC maximum rating achieved)
Testing Standard	ASTM E 90-99 / ASTM E 90-09 (Independent acoustic laboratory, 95% confidence level)
Tested Door Models	Single 1 3/4" raised-panel Environmental MDF doors and fire-rated doors
Gasketing & Hardware	Pemko Manufacturing perimeter gasketing system with Kwikset passage hardware

Field Performance Factors: Laboratory STC ratings reflect controlled ASTM E 90 test conditions; actual installed sound attenuation depends on door profile, perimeter seals, threshold, surrounding wall construction, and installation quality.