Insulation: Number One On The List To Avoid Energy Losses In Crawlspaces

Your home may have one or more crawlspaces — an open area under your house. Odds are you probably don’t spend much time in your crawlspace. This seldom-visited area may contain pipes or ducts, pests or dirt, plastic or debris. But no matter what else is found in your crawlspace, it should contain insulation.

  • A crawlspace with water pipes, but without insulation, can get so cold the pipes freeze and break.
  • A crawlspace with ductwork, but without insulation, can let your warmed or cooled air escape, wasting costly energy.
  • A crawlspace located beneath a living area, but without insulation, can make the floors colder in the winter and hotter in the summer.

If your home has a crawlspace, someone needs to venture into its depths to determine if it’s insulated. If not, it is possible to add the insulation yourself, or you can hire expert help for the job.

How to insulate your crawlspace:

  • Seal any gaps or openings between the crawlspace and the rest of the house. These may be found around drain lines, electrical wiring, plumbing and ductwork.
  • Install insulation flush against the subfloor. Use insulation batts or rolled fiberglass in the proper width to fit between the joists. Use mechanical fasteners to hold the insulation tightly within the joists. Make slits to fit around plumbing or wiring.
  • Wrap insulation around all ductwork and water lines.
  • Spread a vapor retarder (polyethylene plastic) over the dirt floor to cover completely. Tape all seams. To protect this material from damage, you may cover with a thin layer of sand.
  • Add insulation to the exterior walls. Measure from the top of the mudsill (a board on top of the concrete wall) to the floor and add an additional two feet. Cut lengths of insulation and attach to the mudsill using cleats or nails. Extend the excess out from the wall and anchor by placing boards or bricks along the bottom of the wall.
  • Add insulation to the crawlspace side of the access door.

Geisel Heating, Air Conditioning and Plumbing has been serving the Greater Cleveland area for more than 75 years. Contact Geisel for help with your crawlspace insulation.

Our goal is to help educate our customers about energy and home comfort issues (specific to HVAC systems).  For more information, click here to download our free Home Comfort Resource guide.

Geisel Heating, Air Conditioning and Plumbing services Western Cleveland. To get started, check out our website.