1. Install or Replace the Vapor Barrier

A continuous 6–12 mil vapor barrier reduces ground moisture by up to 85%.
Make sure it is:

• Fully taped off
• Laid flat
• Covering 100% of exposed soil

2. Fix Wet or Fallen Insulation

Wet insulation loses effectiveness and becomes a mold magnet.

Signs you need new insulation:

• It’s sagging or fallen
• It’s heavy or damp
• You smell mildew in the home

3. Seal or Condition the Crawlspace

Many PNW homeowners are shifting to conditioned crawlspaces for long-term moisture control:

• Seal vents
• Add insulation to the walls (instead of the floor)
• Install a dehumidifier

This stabilizes humidity, reduces mold risk, and lowers energy bills.

4. Improve Exterior Drainage

Often the moisture problem starts outside:

• Extend downspouts
• Clear or install French drains
• Regrade soil to slope away from the home

5. Add a Sump Pump (If Needed)

If your crawlspace has standing water in winter, a sump pump may be the only way to keep it out.

Want to Know What’s Happening Under Your Home?

Most homeowners don’t check their crawlspace until they smell something or see mold—which means the damage is already underway.

That’s why we offer a Free Moisture Inspection this winter.

We’ll check for:

• Condensation
• Wet insulation
• Mold or mildew
• Vapor barrier damage
• Standing water
• Foundation or ducting issues

Preventing mold is always cheaper than removing it.

Schedule your Free Moisture Inspection today.