To maintain a sofa made of flannel fabric, you'll need to follow a few steps to keep it clean and in good condition. Here's a guide to help you:

Regular Vacuuming: Use a soft brush attachment on your vacuum cleaner to gently remove any loose dirt, dust, or debris from the flannel fabric. Vacuuming should be done at least once a week or more frequently if needed.

Spot Cleaning: Attend to any spills or stains immediately to prevent them from setting into the fabric. Blot the affected area gently with a clean, white cloth or paper towel to absorb the liquid. Avoid rubbing the stain as it may push it further into the fabric. Use a mild fabric cleaner or upholstery cleaner specifically designed for flannel fabric. Follow the manufacturer's instructions and test the cleaner on a small, inconspicuous area of the sofa first to ensure it doesn't cause any discoloration.

Dry Cleaning: If your sofa's flannel fabric has a tag that recommends dry cleaning, it's best to follow those instructions. Take your sofa cushions or covers to a professional dry cleaner who has experience with flannel fabric. Inform them about any specific stains or concerns, so they can provide appropriate care.

Brushing: Flannel fabric can develop a nap over time, which can make it look dull or matted. Use a soft-bristle brush or a fabric brush to gently brush the surface of the sofa in the direction of the nap. This helps restore the fabric's texture and appearance.

Sunlight Protection: Flannel fabric is susceptible to fading when exposed to direct sunlight for extended periods. To preserve the color and quality of your sofa, avoid placing it in direct sunlight or use curtains, blinds, or UV-protective window films to reduce sun exposure.

Rotation: If your sofa cushions are reversible, rotate them periodically to distribute wear evenly. This helps prevent one side from deteriorating faster than the other.

Professional Cleaning: Depending on the level of usage and the manufacturer's recommendations, it's a good idea to have your flannel sofa professionally cleaned every 1-2 years. Professional cleaning can help remove deep-seated dirt and stains, revitalize the fabric, and extend the lifespan of your sofa.

Remember to always refer to the care instructions provided by the manufacturer of your sofa. These guidelines offer specific recommendations based on the type of flannel fabric used in your furniture, ensuring you maintain it properly without causing any damage.