How to Install a Fire-Rated Wood Door

How to Install a Fire-Rated Wood Door That Meets UL Standards IntroductionWhen it comes to fire safety in residential and commercial buildings, installing a fire-rated wood door is crucial. At Shanghai Xunzhong, we provide high-quality fire-rated wood doors that comply with U.S. standards (such as NFPA 80 and UL 10C). This guide will walk you through the proper installation process to ensure maximum safety and performance.

Tools & Materials Needed

Before starting, gather the following:

Fire-rated wood door (from Shanghai Xunzhong, certified to U.S. standards)

Fire-rated door frame

Hinges (minimum 3, fire-rated)

Door closer (self-closing mechanism)

Intumescent seal (expands under heat to block smoke)

Screws (fire-resistant)

Level, drill, screwdriver, shims

Step-by-Step Installation Guide

1. Check Door & Frame CertificationEnsure your Shanghai Xunzhong fire-rated wood door and frame are labeled with:UL Listing or NFPA certification

Fire resistance rating (20/45/60/90 minutes)

2. Prepare the Door Frame

Verify that the rough opening is correctly sized (typically 2" wider and taller than the door).

Install the fire-rated frame, ensuring it’s level and plumb. Use shims for adjustments

3. Install Intumescent Seals

Apply intumescent strips around the door edges or frame. These seals expand in high heat to block smoke and flames.

4. Hang the Door

Attach fire-rated hinges (3 or more) to the door and frame.

Ensure even gaps (usually 1/8" on sides and top, 3/4" at the bottom).

5. Install Door Closer & Hardware

A self-closing mechanism is mandatory for fire-rated doors.

Use fire-rated locks/latches that won’t melt or fail in high heat.

6. Verify Clearance & Operation

Test the door to ensure it closes automatically and securely without sticking.

Check that gaps do not exceed code requirements.

Final Inspection & Compliance

After installation:

✔ Confirm all components are fire-rated and UL-certified.

✔ Ensure no gaps allow smoke or flame passage.

✔ Test door operation multiple times.

At Shanghai Xunzhong, we guarantee our fire-rated wood doors meet UL safety standards for superior protection. Proper installation is key to maintaining their integrity in an emergency.For more details on our products, visit our website or contact our team today!

Email: [email protected]

Tel number/Whatsapp: +86 13798578202

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