The Easy Crawlspace and Attic Maintenance Checklist

Your Guide to a Safer, Healthier, and More Efficient Home

Most homeowners never think about their crawlspace or attic—until something goes wrong. But these hidden areas have a huge impact on your home's energy efficiency, air quality, and long-term durability. The good news? Keeping them in shape doesn't have to be hard or expensive.

With this easy, step-by-step checklist, you can prevent costly repairs, reduce allergens, and protect your home year-round.

Whether you live in the Pacific Northwest or anywhere with seasonal moisture, this guide makes crawlspace and attic maintenance simple and effective.

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Why Maintenance Matters in Your Crawlspace and Attic

Think of your crawlspace and attic as your home's lungs and insulation layer. When neglected, they can cause serious problems, such as:

• Mold growth from trapped moisture

• Drafts and high energy bills due to poor insulation

• Rodents and insects nesting in dark, quiet corners

• Contaminated indoor air from unseen allergens and dust

These spaces directly impact the health of your home—and everyone inside it. Regular upkeep can save you thousands in repairs and give you peace of mind.

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1. Inspect for Moisture and Mold

Start by checking for signs of water damage or excess humidity. This includes:

• Pooled water or condensation

• Mold or mildew on wood or insulation

• A musty odor, especially after rain

Tip: If mold is present, don’t wait. Bring in a professional to clean and dry the space safely.

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2. Check the Condition of Insulation

In both the attic and crawlspace, insulation plays a major role in regulating temperature and energy use. Look for:

• Fallen, damp, or deteriorating insulation

• Bare spots between floor joists or rafters

• Evidence of rodents nesting in or around it

Old or wet insulation won’t work effectively—and may need to be replaced.

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3. Look for Rodent or Pest Activity

Rodents love undisturbed spaces and leave behind health hazards. Look out for:

• Droppings, nests, or gnawed materials

• Entry points along walls or vents

• Chewed wires or insulation

Seal entry holes and consider exclusion or cleanup services if pests are present.

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4. Test Ventilation and Airflow

Good airflow helps reduce moisture and regulate temperature. Check to ensure:

• Crawlspace vents are clear of debris

• Attic fans (if installed) are working properly

• Vents aren’t blocked by insulation or clutter

In some cases, sealing vents in crawlspaces may be the better option—especially if you're considering encapsulation.

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5. Examine the Vapor Barrier

In your crawlspace, a vapor barrier prevents moisture from rising from the soil. Inspect for:

• Tears, gaps, or missing sections

• Exposed soil

• Overlapping edges not properly sealed

If the barrier is damaged or incomplete, replace or repair it to avoid long-term moisture issues.

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6. Seal Air Leaks and Gaps

Air leaks can cause energy loss and allow pests inside. Look around:

• Ductwork seams and HVAC penetrations

• Plumbing and electrical openings

• Access doors or attic hatches

Use caulk or foam to seal gaps. This keeps your home warmer in winter and cooler in summer.

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7. Document What You Find

Before and after photos, plus a few notes, can help you:

• Track changes year to year

• Communicate better with contractors

• Spot slow-developing issues before they grow

Keeping a log makes your yearly inspections quicker and easier.

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Crawlspace and Attic Maintenance = Long-Term Savings

Taking just one afternoon a year to inspect your crawlspace and attic can prevent:

• Thousands in water or mold damage

• Pest infestations and air quality problems

• Higher heating and cooling bills

Think of it as a check-up for your home’s health—and your wallet.

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Need Help? We Make It Easy

At The Crawlspace Crew, we specialize in inspecting, cleaning, and upgrading crawlspaces and attics throughout the Pacific Northwest. Whether you need insulation replacement, vapor barrier repair, or a rodent cleanup, we’ve got your back.

We make maintenance easy so you can enjoy a safer, healthier, more efficient home—without crawling around yourself.