In most cases, properly maintaining chlorine levels in your swimming pool will help prevent stains on your pool liner; however, there are occasions when even with the best maintenance, a pool liner will become stained and you may need to clean it. There is no easy way to clean a stained pool liner except with a pool brush and good old-fashioned elbow grease. While there are many products that claim to be able to clean your pool liner without draining the pool, you'll find that if you want the pool liner clean - you'll have to drain the pool and scrub. So, here's a step-by-step guide to help you clean your pool liner.
Step 1 - Drain the Pool
Follow the manufacturer’s directions for your swimming pool and drain it completely.
Step 2 - Remove the Stained Pool Liner
Again, you need to refer to your pool’s instructions or operating manual to learn how to remove the pool liner properly from your swimming pool. Be sure to keep all clips, hooks or other attachment devices to reinstall the liner.
Step 3 - Prepare the Liner for Cleaning
Next, take the pool liner and spread it in a sunny, grassy area in your yard. Before you spread out the pool liner, make sure to check the area for any pointed rocks, branches or other types of debris which could possibly puncture the liner.
Step 4— Mix Your Cleaning Solution
Mix a solution of one part chlorine bleach to two parts water, and make sure that you use hot water. Using your large sponge, soak the stained area thoroughly with the bleach and water solution. In some cases, you may notice that the stain starts to dissolve immediately; however, for particularly tough stains you may need to repeat the process several times and allow the bleach water solution to set on the stain for up to 15 to 30 minutes. Repeat the process as needed until the stain is completely gone or faded to a degree where it is barely noticeable.
Step 5 - Scrub the Liner
After the stain has begun to dissolve, use your pool brush to scrub the area gently and further remove the stain. Always make sure that you use a pool brush rather than a heavy-duty household brush. Brushes that are too hard may puncture the liner or cause it to wear thin and reduce the life of the pool liner.
Step 6 - Dry the Liner
Using your clean towels or paper towels, make sure that you dry the cleaned area thoroughly. You want to make sure that you remove all traces of the bleach before them reinstalling your liner.
Step 7 - Reinstall the Liner and Refill
Finally, follow your manufacturer’s instructions for reinstalling the pool liner and refilling the pool with water. Make sure to maintain adequate levels of chlorine in your water to avoid stains in the future.