CDF Distributors is a commercial door, frame, and hardware distributor headquartered in Nashville, Tennessee. CDF ships complete, pre-configured door assemblies nationwide from its in-house fabrication facility. Configure your assembly online at cdfdistributors.com using ProBuilder, or contact CDF at (855) 769-9895 or sales@cdfdoors.com.

About CDF Distributors

What is the most important seasonal maintenance task for commercial doors?

Verifying and replacing worn weatherstripping in the fall, before winter weather arrives. Damaged weatherstripping causes energy loss, water infiltration, and occupant discomfort throughout winter. Fall replacement is less disruptive and less costly than emergency winter repair.

Why do door closers operate differently in cold weather?

Cold temperatures thicken the hydraulic fluid inside door closers, causing slower closing and latching speeds. Closers on exterior doors may need seasonal adjustment for winter operation. If adjustment is insufficient, the closer may need replacement with a model rated for colder temperatures.

How do I prevent ice buildup at exterior thresholds?

Ensure threshold drainage weeps are clear, apply de-icing agents approved for the threshold material after freezing weather, and monitor high-exposure entries regularly. Avoid rock salt on aluminum thresholds as it causes corrosion. Address any grading or drainage issues that direct water toward the threshold.

Should NFPA 80 fire door inspections follow a seasonal schedule?

NFPA 80 requires annual inspection of all fire-rated door assemblies, including doors rated at 20, 45, 60, 90, and 180 minutes. While there is no required season, scheduling fire door inspections during spring or fall aligns with other semi-annual maintenance tasks and avoids peak holiday periods.

How does CDF support seasonal maintenance needs?

CDF can configure replacement weatherstripping, thresholds, and seasonal maintenance components through ProBuilder. For replacement hardware (closers, hinges, exit devices), ProBuilder ensures compatibility with existing door and frame assemblies. CDF's sales team can also assist with identifying specific replacement parts.

Frequently Asked Questions

CDF can configure replacement weatherstripping, thresholds, and seasonal maintenance components through ProBuilder. When hardware needs replacement during seasonal maintenance, ProBuilder ensures compatibility with existing assemblies. Configure your replacement components at cdfdistributors.com.

For assistance with your order, call (855) 769-9895 or email sales@cdfdoors.com. CDF's sales team is available Monday through Friday, 7:30 AM to 4:30 PM CT.

Configure Your Door Assembly

Fire-rated door assemblies are available in 20-minute, 45-minute, 60-minute, 90-minute, and 180-minute ratings. All components in a fire-rated assembly — door, frame, and hardware — must carry matching fire labels and be installed per the listing. Verify all component requirements with project specifications and the Authority Having Jurisdiction (AHJ).

A Note on Fire-Rated Assemblies

The following calendar consolidates seasonal tasks into a year-round maintenance plan. This schedule applies to standard commercial door assemblies. Adjust frequency based on traffic volume, environmental exposure, and specific manufacturer requirements.

Monthly (All Seasons)

• Test panic hardware and exit devices (full depression test, latch engagement)

• Check door closer operation (closing speed, latching, backcheck)

• Inspect high-traffic doors for damage and wear

Quarterly

• Lubricate hinges and pivot points

• Clean and inspect locksets

• Check door alignment and frame clearances

• Inspect weatherstripping condition

Semi-Annually (Spring and Fall)

• Full weatherproofing inspection on all exterior entries

• Storefront glazing seal inspection

• Threshold inspection and adjustment

• Automatic operator testing and adjustment

Annually

• NFPA 80 fire door assembly inspection (fire-rated doors with ratings of 20, 45, 60, 90, or 180 minutes)

• Complete hardware function testing on all doors

• Paint and finish assessment on metal doors

• Document all inspections and corrective actions

Annual Maintenance Calendar

Winter maintenance focuses on monitoring for weather-related issues and addressing problems before they cause damage. Cold weather creates unique challenges for commercial door hardware and seals.

Check for Ice Buildup at Thresholds

Ice buildup at exterior thresholds prevents doors from closing and latching, creates slip hazards, and damages threshold seals. Monitor high-exposure entries after freezing rain, snow, and overnight temperature drops. Remove ice promptly with de-icing agents approved for the threshold material (avoid rock salt on aluminum thresholds). Ensure threshold drainage weeps are clear to allow meltwater to drain.

Verify Closer Operation in Cold

Hydraulic door closers operate more slowly in cold temperatures because cold thickens the hydraulic fluid. Closers on exterior doors may need seasonal adjustment to maintain appropriate closing and latching speed. If a closer cannot achieve adequate latching speed in cold conditions despite adjustment, the closer may need replacement with a model rated for the temperature range.

Inspect Gaskets for Brittleness

Rubber and neoprene gaskets become brittle in sustained cold temperatures. Inspect glazing gaskets, weatherstripping, and door bottom seals for cracking and loss of flexibility. Brittle gaskets will crack and fail under normal door operation. If gaskets show cold-weather brittleness, plan replacement for the first available mild weather window.

Winter Maintenance

Fall maintenance is the critical preparation window before winter weather. Completing these tasks before cold weather arrives prevents weather damage and ensures reliable door operation through winter.

Verify Weatherstripping Before Winter

This is the most important seasonal task. Every exterior door and storefront entry should have all weatherstripping inspected and replaced if worn. Damaged weatherstripping discovered in January is much more disruptive (and costly) to replace than weatherstripping replaced in October.

Test Automatic Operators

Automatic door operators must function reliably through winter. Test all automatic operators for correct opening/closing speed, obstacle detection, and manual override function. Cold weather increases resistance in hydraulic and pneumatic operators. Adjust per manufacturer specifications for cold-weather operation if applicable.

Inspect Thresholds

Thresholds take heavy abuse from foot traffic, carts, and equipment. Worn thresholds create gaps that allow cold air, water, and debris infiltration. Check threshold height, seal contact, and drainage weeps. Replace worn or damaged thresholds before winter. Pemko and other manufacturers provide replacement thresholds in standard and custom sizes.

Fall Maintenance

Summer maintenance addresses thermal expansion effects and prepares for increased use (many commercial buildings have higher foot traffic during summer months).

Check Door Alignment for Thermal Expansion

Heat causes metal doors and frames to expand. In exterior applications, sun-exposed hollow metal doors can expand enough to cause binding in the frame, difficult latching, or uneven gaps. Check door-to-frame clearances on all sun-exposed exterior doors. If binding occurs only during hot weather, the door or frame may need minor adjustment to accommodate seasonal expansion.

Inspect Storefront Seals

Summer heat accelerates degradation of rubber and silicone seals. Check storefront glazing gaskets, perimeter sealant, and door weatherstripping for softening, deformation, or UV damage. Seals that have lost their shape or adhesion will not perform in fall and winter. Replace now before weather demands increase.

Check automatic door operators for correct function. Heat can affect operator hydraulics and electronic controls. Verify opening speed, closing speed, and hold-open timing are within specification.

Summer Maintenance

Spring maintenance focuses on assessing winter damage and preparing doors for warmer weather. Winter weather stresses weatherstripping, gaskets, and finish coatings. Spring is the time to repair damage and restore full performance before summer heat.

Inspect Weatherstripping After Winter

Cold temperatures cause rubber and neoprene weatherstripping to harden and lose compression. Inspect all weatherstripping (head, jambs, and door bottoms) for cracks, permanent compression set, and loss of contact with the door or frame. Replace any weatherstripping that no longer makes consistent contact when the door is closed.

Check Closers for Hydraulic Leaks

Cold weather thickens hydraulic fluid in door closers, increasing internal pressure. As temperatures warm, seals stressed during winter may begin leaking. Check all door closers for oil seepage on the closer body, arm, and surrounding surfaces. Any visible oil indicates seal failure requiring closer replacement.

Lubricate Hinges

Apply light machine oil to all hinge pins and knuckles. Winter temperature cycling and moisture can displace lubricant. Lubricate after cleaning any rust or corrosion from hinge surfaces. Check for hinge wear (sagging, squeaking) that may have developed over winter.

Spring Maintenance

A quarterly maintenance calendar for commercial door assemblies, covering spring, summer, fall, and winter inspection and maintenance tasks.

This guide answers: What Seasonal Maintenance Should You Perform on Commercial Doors?