Asphalt Maintenance Calendar: Month-by-Month Guide for Oregon

Oregon's Climate Demands a Maintenance Calendar

Oregon's weather does not give asphalt a break. From October through May, the Willamette Valley receives 30-40 inches of rain. Winter brings freeze-thaw cycles that open cracks and weaken the base. Then summer delivers UV exposure that oxidizes the asphalt binder and makes the surface brittle.

Without a planned maintenance schedule, these forces compound year after year until your pavement fails prematurely. This calendar tells you exactly what to do and when to do it, tailored specifically to Oregon's climate patterns.

The Oregon Asphalt Maintenance Calendar

January: Monitor and Document

Weather: Cold, wet. Temperatures fluctuate around freezing in the valley.

Tasks:

• Walk the property after freeze events. Look for new cracks, heaving, or potholes that developed overnight.
• Document damage with photos. Take wide-angle shots and close-ups with a measuring reference (coin, ruler). This creates a maintenance record and helps contractors provide accurate spring quotes.
• Check drainage. After heavy rains, note any areas where water pools for more than 30 minutes. Mark them for spring repair.
• Clear debris. Remove fallen branches, leaves, and sediment from the surface and drainage structures.

Do not attempt: Sealcoating, crack sealing, or hot-mix repairs. Temperatures are too low for proper curing.

February: Plan and Budget

Weather: Continued rain. Occasional snow in the foothills. Freeze-thaw cycles peak.

Tasks:

• Review your damage documentation from January. Compile a list of everything that needs attention.
• Get contractor quotes. Contact paving contractors now for spring and summer work. Waiting until May means competing with every other property owner for scheduling.
• Set your annual maintenance budget. Budget $0.15-0.40 per square foot annually for commercial lots, $0.30-1.00 per square foot for residential driveways.
• Emergency pothole repairs only. Use cold patch material to fill any potholes that are hazardous. This is a temporary fix — permanent repair comes in spring.

Pro tip: Contractors are least busy in February. You will get better pricing and more responsive scheduling by booking now for May-June work.

March: Early Assessment

Weather: Rain continues but temperatures begin to warm. Last freeze events typically occur.

Tasks:

• Conduct a thorough spring inspection. Walk every square foot of your pavement looking for:
  • Cracks wider than 1/4 inch
  • Alligator cracking (interconnected pattern indicating base failure)
  • Potholes and depressions
  • Edge deterioration
  • Faded color and oxidized surface
  • Standing water areas
  • Damaged curbing or gutters
• Prioritize repairs. Classify everything as urgent (safety hazard), important (will worsen if delayed), or routine (cosmetic).
• Clean the surface. Power sweep or blow the entire pavement to remove winter debris, sand, and sediment.

April: Begin Crack Sealing

Weather: Rain decreases. Daytime temperatures reach 50-60 degrees F.

Tasks:

• Start crack sealing during dry windows. You need 24 hours of dry weather above 50 degrees F for crack sealant to cure.
• Route larger cracks. Cracks wider than 1/2 inch benefit from routing (widening with a saw to create a uniform channel) before filling with hot-pour sealant.
• Address drainage issues. Regrade areas where water ponds. Clean and repair catch basins, French drains, and culverts before the dry season.
• Repair curbing and edges. Replace damaged concrete curbing and backfill any washout behind curb lines.

Oregon timing note: April is transitional. Watch the weather forecast closely and take advantage of dry stretches. You may get 3-5 workable days between rain events.

May: Major Repairs Begin

Weather: Rain tapers off. Daytime temperatures consistently reach 55-70 degrees F.

Tasks:

• Complete all crack sealing. Finish any crack sealing that was not completed in April.
• Hot-mix patching. Asphalt plants are open and hot mix is available. Replace cold patches with permanent hot-mix repairs.
• Pothole repair. Cut damaged areas into clean rectangles, remove failed material, compact the base, and fill with hot mix.
• Infrared patching. For areas needing seamless repairs, infrared heating and recompaction delivers the best results.
• Schedule sealcoating. Book your sealcoating for June, July, or August. Popular contractors fill summer calendars by mid-May.

Cost note: Hot-mix asphalt prices are typically lowest in May before summer demand peaks. Scheduling major repairs in May can save 10-15% over July pricing.

June: Sealcoating Season Opens

Weather: Dry stretches lengthen. Temperatures reach 65-80 degrees F. Ideal working conditions.

Tasks:

• Sealcoating can begin. Conditions are typically suitable from mid-June forward. You need:
  • Daytime temperatures above 50 degrees F (ideally 60+)
  • No rain for 48 hours after application
  • Pavement surface dry at time of application
• Pre-sealcoat preparation. Oil spot treatment, final crack sealing, and surface cleaning must happen before sealcoat goes down.
• Line striping after sealcoating. Wait 24-48 hours after sealcoat cures before restriping.

July: Peak Maintenance Season

Weather: Dry, warm. Oregon's driest month. Temperatures reach 75-95 degrees F.

Tasks:

• Prime sealcoating window. July offers the most reliable dry weather in Oregon. If you have not sealcoated yet, this is the month.
• Major resurfacing projects. Asphalt overlay and mill-and-fill projects are best scheduled in July and August when extended dry periods allow large-scale work.
• Inspect sealcoated surfaces. Areas that were sealcoated in June should be inspected for missed spots, peeling, or thin coverage.

Heat warning: Asphalt surfaces soften on days above 90 degrees F. Avoid parking heavy equipment, trailers, or kickstands on freshly sealcoated surfaces during heat waves.

August: Complete Summer Projects

Weather: Continued dry conditions. Temperatures begin to moderate late in the month.

Tasks:

• Finish all major maintenance. This is your last reliable month for sealcoating and major repairs.
• Final line restriping. Complete any striping projects before fall traffic patterns change (school zones, seasonal businesses).
• ADA compliance check. Review accessible parking spaces, van access aisles, and signage. Address any issues before fall.
• Document completed work. Photo-document all maintenance performed for your records and property management files.

September: Transition to Fall Prep

Weather: Rain returns late September. Temperatures cool to 55-70 degrees F.

Tasks:

• Last chance for crack sealing. Seal any new cracks that developed over summer before moisture enters them during fall rains.
• Clean drainage structures. Clear leaves and debris from catch basins, storm drains, gutters, and French drains. This is critical — clogged drains cause flooding and pavement damage.
• Emergency sealcoating. If you missed the summer window, early September can work during dry spells, but this is risky. Monitor the forecast carefully.
• Fall sweeping. Begin regular leaf removal. Oregon's deciduous trees start dropping leaves in September, and decomposing leaves trap moisture against the pavement.

October: Rain Preparation

Weather: Rainfall increases significantly. Oregon's wet season begins.

Tasks:

• Final drainage inspection. Verify all drainage is flowing freely before heavy rains arrive.
• Emergency crack sealing. If you have a dry day above 50 degrees F, seal any remaining cracks. This is the absolute last opportunity before winter moisture exploits every opening.
• Stockpile cold patch. Purchase bags of cold patch material for emergency winter pothole repairs. Store in a dry location.
• Review maintenance log. Assess what was completed, what was missed, and what to prioritize for next spring.

November: Winter Watch Begins

Weather: Heavy rain. First freeze events in the foothills and east of the Cascades.

Tasks:

• Monitor for drainage problems. Check the property during and after heavy rain events. Note any new ponding areas.
• Emergency pothole repair only. Use cold patch for any potholes that develop. Mark repaired areas for permanent hot-mix repair in spring.
• Keep surfaces clear. Sweep debris regularly. Wet leaves on asphalt create slip hazards and stain the surface.

Do not attempt: Sealcoating, hot-mix repairs, or crack sealing. Conditions are too wet and cold.

December: Protect and Document

Weather: Cold, wet. Freeze-thaw cycles begin in earnest.

Tasks:

• Monitor freeze-thaw damage. After each hard freeze, inspect for new cracks and heaving.
• Clear ice carefully. Avoid using metal shovels or plows that can gouge the asphalt surface. Rock salt damages asphalt — use sand or non-chloride de-icers instead.
• Plan next year's budget. Use this year's maintenance records to project next year's costs and schedule.
• Emergency repairs as needed. Cold patch only for safety hazards.

Year-at-a-Glance Summary

| Month | Primary Activity | Weather Window | |---|---|---| | Jan | Monitor and document | None | | Feb | Plan and budget | None | | Mar | Spring inspection | Limited | | Apr | Crack sealing begins | 3-5 dry days | | May | Major repairs | Good | | Jun | Sealcoating opens | Excellent | | Jul | Peak maintenance | Best | | Aug | Complete projects | Excellent | | Sep | Fall prep, drainage | Fair to Good | | Oct | Rain prep, last sealing | Limited | | Nov | Emergency repairs only | None | | Dec | Protect and plan | None |

Build Your Maintenance Plan With Cojo

Every pavement asset is different. Age, traffic volume, condition, and budget all affect the right maintenance schedule. Cojo works with Oregon property owners and managers to build customized maintenance plans that maximize pavement life while minimizing annual costs.

Contact us for a free pavement assessment. We will inspect your asphalt, document its current condition, and recommend a multi-year maintenance plan that keeps your property looking professional and performing well.

See examples of our asphalt maintenance work and learn more about our asphalt services.