How to Clean an Attic

Put on Protective Gear

Before beginning the chore of cleaning an attic, put on a protective mask, gloves, and safety glasses to keep allergens and irritants like insulation from entering your system.

Gather Cleaning Supplies and Tools

To make the task easier, be sure that all of the cleaning supplies and tools are taken into the attic before you begin cleaning. This will save you time and trips up and down the stairs.

Since most attics have minimal lighting, a shop light, headlamp, or a bright lamp will help you see areas that need attention. A sturdy step-ladder may be needed to reach dusty rafters.

Empty the Space

Remove all boxes, bags, and furniture from the attic to make cleaning easier. If removing large pieces is too difficult, consolidate and move them to one corner so the rest of the space can be cleaned more easily.

If there are windows in the attic, remove any window treatments and toss them in the washer or send them to a dry cleaner.

Remove Dust

Start dusting at the top of the space and work your way down. Dust beams, light fixtures, ceiling fans and blades, walls, and window frames.

Dusting can be done with disposable dusters, microfiber dusters, or cloths. It is important to have plenty of dusters or cloths available so that you can change to a fresh one as they become loaded with dust.

Sweep and Vacuum

Use a broom and dustpan to gather any large debris that might clog a vacuum unless you are using a shop vac. Carefully vacuum all flooring to gather dust, dead insects, and other allergens. Empty the vacuum bag or dust cup into a trash bag as often as needed.

Wash Windows and Screens

If there are windows in the attic, use a glass cleaner and microfiber cloth to clean the inside panes—and outside panes, if possible. Clean the window screens.

Inspect the Attic

Now that the layer of dust is removed, take time to inspect the insulation, look for any mold or moisture damage, and check for insect or pest infestation.

The insulation in the attic should be evenly distributed with no gaps showing. If the insulation has fallen below the level of the floor joists, you probably need to add more.

Inspect both the insulation and ceiling for mold and mildew growth. The mold may be a variety of colors and none of it is good for the air quality in your home. Call in a professional if you see mold or water stains from leaks.

Take note of any evidence of insect or rodent activity—excrement or chewed boxes—and look for gaps or slivers of daylight that may be an entrance point. Call in a professional exterminator or treat the space yourself. If the area feels drafty, check windows for gaps. Leaks can increase your home heating and cooling costs.

Sort Stored Items

Now is the time to sort through all of the items that have made their way into the attic. Make three piles—keep, donate, toss—and touch each item only once.

Reorganize Stored Items

Once you know what you are keeping, it is time to organize.

Important documents should be stored in a fire-proof box. Other items should be stored in plastic bins that are pest-proof. Use clear bins or label the contents.

Stack the bins with similar or seasonal items together. Look for ways to add wire or wooden shelving between the rafters for better organization.

If you leave any furniture in the attic while you are cleaning, dust it and put it back in place. Use old cotton sheets to cover the pieces to help keep them clean. Don't forget to clean under the furniture if you haven't already.