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Home Maintenance

Winterizing Your Home in the Fall

Prepare your Colorado home for freezing temperatures with a prioritized fall checklist covering plumbing, irrigation, drainage, heating, air leaks, and exterior maintenance.

Published
September 1, 2025
Reading
9 min
By
BigBoy Builders

Prepare Before the First Hard Freeze

Colorado weather can shift quickly in the fall. Warm afternoons may be followed by overnight temperatures below freezing, leaving little time to protect exposed plumbing, irrigation systems, exterior finishes, and drainage components.

Winterization is most effective when completed as a coordinated inspection rather than a collection of last-minute repairs. The priority is to address anything involving water first, followed by heating, weather sealing, drainage, and exterior protection.

Start With the Highest-Risk Items

urgent

Disconnect exterior hoses

Remove every garden hose, splitter, timer, and spray nozzle from exterior faucets. A connected hose can trap water inside the faucet and increase the risk of freeze damage.

urgent

Protect irrigation components

Shut down and winterize irrigation equipment according to the system design. Pay particular attention to exposed backflow devices, above-ground valves, filters, and drip components.

high

Inspect the heating system

Replace the furnace filter, test the thermostat, confirm that supply and return vents are unobstructed, and schedule service if the system is noisy, unreliable, or overdue for inspection.

high

Clear gutters and drainage paths

Remove leaves, roofing granules, nests, and other debris that can obstruct roof runoff. Confirm that downspouts discharge away from the foundation.

normal

Seal obvious air leaks

Inspect exterior doors, accessible windows, attic hatches, and utility penetrations for failed weatherstripping, missing caulk, or visible gaps.

A Practical Winterization Sequence

Exterior Plumbing

Protect faucets, hoses, pipes, and exposed water components

Disconnect hoses and accessories from exterior faucets. Inspect each faucet for leaks or damaged vacuum breakers. Close interior shutoff valves where present, then drain the exterior branch according to the plumbing configuration.

Insulate vulnerable pipes in garages, crawlspaces, utility rooms, and exterior walls. Pipe insulation reduces exposure but does not correct an active air leak or an unheated space that routinely freezes.

Irrigation & Drip Systems

Remove trapped water from freeze-sensitive equipment

Turn off the irrigation water supply and follow the winterization procedure appropriate for the system. Systems that require compressed-air blowout should be serviced using suitable pressure and volume rather than simply attaching an oversized compressor.

Drain or protect backflow assemblies, filters, pressure regulators, hose-end timers, above-ground manifolds, and exposed drip tubing. Store removable components indoors when practical.

Roof Drainage & Ground Water

Move snowmelt and runoff away from the home

Clean gutters and verify that downspouts are securely attached. Extend downspout discharge away from the foundation where necessary, and correct depressions that collect water near the house.

Water that freezes beside a foundation, walkway, or patio can contribute to frost movement, slippery surfaces, erosion, and repeated moisture exposure.

Doors, Windows & Penetrations

Reduce drafts without trapping moisture

Replace compressed or missing door weatherstripping and adjust doors that no longer close evenly. Seal exterior gaps around pipes, vents, cables, trim joints, and other penetrations using materials appropriate for the surface and joint movement.

Do not seal required combustion-air openings, drainage gaps, soffit ventilation, or weep holes.

Heating & Life-Safety Systems

Verify reliable heat and working alarms

Test the heating system before sustained cold weather arrives. Replace dirty filters and confirm that registers are open and unobstructed.

Test smoke and carbon-monoxide alarms, replace expired units, and confirm that fireplaces, fuel-burning appliances, and portable heaters have adequate clearance and ventilation.

Exterior Surfaces & Equipment

Address minor damage before snow and ice make it worse

Inspect exposed wood, siding, trim, caulk joints, steps, railings, and exterior hardware. Small openings and loose components often worsen after repeated moisture and freeze-thaw exposure.

Drain and store pressure washers, hoses, sprayers, and other water-bearing equipment in accordance with the manufacturer's instructions.

Areas Commonly Missed

  • A hose left connected to a frost-resistant faucet
  • An exposed irrigation backflow preventer
  • Water trapped inside a pressure washer or garden sprayer
  • A downspout terminating beside the foundation
  • A garage pipe located near a poorly sealed overhead door
  • Damaged weatherstripping along the bottom corner of an exterior door
  • A crawlspace vent, access panel, or utility opening that no longer closes
  • Snow-removal equipment that has not been tested before the first storm

What Not to Do

Do not assume a faucet is protected simply because it is labeled frost-free. Frost-resistant faucets still depend on proper installation, adequate interior heat, correct drainage, and removal of attached hoses.

Avoid permanently blocking foundation, attic, appliance, or combustion ventilation without understanding its purpose. Reducing drafts must not create moisture, ventilation, or carbon-monoxide hazards.

Supplies Worth Having Before Winter

  • Replacement furnace filters
  • Exterior-rated weatherstripping
  • Appropriate exterior sealant
  • Foam pipe insulation
  • Insulated faucet covers
  • Gutter scoop and stable ladder
  • Ice melt suitable for the surface
  • Snow shovel or snow blower supplies
  • Flashlights and replacement batteries
  • Water shutoff key or appropriate wrench

Frequently asked questions

Need help preparing your home for winter?

BigBoy can handle seasonal repairs, exterior sealing, drainage corrections, fixture protection, and other practical fall maintenance around your Colorado Springs or Monument home.

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Questions this guide didn't answer?

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