Your boat's exterior fabric is much like your front porch: with a regular hose down, it won't need heavy-duty washing too often.

Canvas enclosures, dodgers, awnings and bimini tops usually are treated to resist water, so harsh cleaning products (and harsh techniques) can be harmful. Instead, exterior fabric can be spruced up after every trip by wiping off loose dirt and spraying it with a hose (though you should skip the wipe down on clear vinyl panels to avoid scratches).

To find out how to take fabric cleaning a step farther, we consulted industry-leader Sunbrella. The company recommends mixing a mild soap such as Woolite or Ivory Snow - no detergents - with water, then working it in with a soft brush and letting it soak before rinsing thoroughly. Heavy stains such as oil or fish blood can be attacked with the following mixture, according to the company: one cup of bleach, a quarter cup of mild soap and a gallon of water. Apply it the same way, but let it sit for 20 minutes before rinsing. If you must machine-wash, stick with mild products and use cold water.

Of course, there are shelves full of cleaners to choose from, and many have a loyal following down at the marina. Ask a dozen boaters what they use and you will get a dozen heartfelt recommendations. The best approach is to determine who made your fabric and consult the manufacturer (cleaning tips are often available on the web site).

Whatever your product and technique, do follow this advice: let your material air-dry. Use a machine and the fabric can shrink, making it impossible to reinstall on the boat.

– Theodore J. Sawchuck