How Do I Clean Pool Deck Stains?

Use a concrete cleaner or a mild detergent with a brush to remove dirt and stains from the pool deck.

What Are the Causes of Pool Deck Stains?

Stains on your pool deck can arise from various sources. Identifying the cause of the stain will help you choose the most effective cleaning method. Here are the most common causes of pool deck stains:

1. Pool Chemicals

Pool chemicals like chlorine, algaecides, and other cleaning agents are necessary for maintaining water quality, but they can also stain your deck if spilled or splashed out of the pool.

• Why it happens: Pool chemicals can bleach or discolor the surface of your deck, especially if there’s prolonged exposure or improper handling.

2. Algae Growth

Algae can grow around the edges of your pool deck, particularly in damp or shady areas. Algae stains often appear as greenish or black patches and can be quite slippery.

• Why it happens: Algae thrive in humid environments and can take hold of the deck’s surface if not removed regularly.

3. Rust

Rust stains occur when water containing minerals from metal parts (such as pool ladders, handrails, or even a rusty pool filter) leaks onto the pool deck.

• Why it happens: Rust can create orange-brown stains on concrete or pavers, and it’s more likely to happen when metal parts are corroding due to water exposure.

4. Dirt, Oil, and Sunscreen

Dirt from foot traffic, oils from sunscreen or lotions, and other organic matter can stain your pool deck. These stains are typically greasy and can accumulate quickly with frequent use.

• Why it happens: Body oils and dirt particles can soak into porous surfaces like concrete, making them difficult to clean without the proper techniques.

5. Leaves and Organic Matter

When leaves and other plant debris are left on the pool deck, they can leave behind stubborn stains, especially from tannins (found in leaves and tree sap).

• Why it happens: Organic matter breaks down and leaches color into the surface, which can create dark, unsightly stains.

What Types of Pool Decks Are Most Prone to Stains?

Different pool deck materials can stain differently, and each material may require a different cleaning method. Here’s a breakdown of common pool deck materials and their susceptibility to stains:

1. Concrete Pool Decks

Concrete is one of the most common pool deck materials, but it is also highly susceptible to staining, especially if not properly sealed.

• Why it happens: Concrete is porous, so it can absorb oils, chemicals, and organic matter, leading to stains that are difficult to remove.

2. Paver Pool Decks

Paver decks are made of individual stones or tiles, and although they are durable, they can also become stained by chemicals, dirt, and algae.

• Why it happens: The joints between the pavers can trap dirt and water, creating an environment where algae can thrive.

3. Wood Pool Decks

Wooden pool decks are more prone to staining from oils, rust, and algae due to their porous nature.

• Why it happens: Wood can absorb stains and moisture, leading to discoloration and the growth of mold or mildew if not properly maintained.

4. Tile Pool Decks

Tile decks are typically easy to maintain and resistant to staining. However, grout lines and certain types of tile can still become stained by pool chemicals or organic material.

• Why it happens: Grout lines, in particular, can trap dirt, algae, and other materials, which can lead to staining over time.

How to Clean Pool Deck Stains

Cleaning pool deck stains requires different methods depending on the type of stain and deck material. Here’s a step-by-step guide to cleaning the most common pool deck stains:

1. Cleaning Concrete Pool Deck Stains

Concrete pool decks are prone to a variety of stains. Here’s how to clean them:

Step 1: Sweep the Area

Start by sweeping the deck to remove debris, leaves, and dirt. This will help avoid rubbing dirt into the concrete while cleaning.

• What to do: Use a broom or a leaf blower to remove dirt, leaves, and other loose debris from the surface.

Step 2: Apply a Concrete Cleaner

For general cleaning, a concrete cleaner or mild detergent may be sufficient. Apply the cleaner directly to the stained areas.

• What to do: Follow the manufacturer’s instructions for application, and use a stiff-bristled brush to scrub the surface.

Step 3: Use a Pressure Washer for Tough Stains

For more stubborn stains, you may need to use a pressure washer. Be cautious with the pressure settings, as too high of a pressure can damage the concrete.

• What to do: Use a pressure washer with the appropriate nozzle and pressure settings to clean the stains.

Step 4: Use a Stain Remover for Persistent Stains

For tough stains like rust, use a stain remover that is safe for concrete surfaces.

• What to do: Apply the stain remover, let it sit for the recommended time, and scrub it off with a stiff brush.

2. Cleaning Paver Pool Deck Stains

Paver pool decks require special care to avoid damaging the joints between the stones. Here’s how to clean them:

Step 1: Sweep the Pavers

Remove any loose debris, dirt, or leaves from between the pavers.

• What to do: Use a broom or leaf blower to clear debris from the pavers.

Step 2: Apply a Paver Cleaner

Use a paver cleaner designed for stone surfaces. Apply it to the affected areas and allow it to sit for a few minutes.

• What to do: Scrub the pavers gently with a soft-bristled brush to remove stains.

Step 3: Rinse and Dry

After cleaning, rinse the pavers thoroughly with clean water to remove any cleaner residue.

• What to do: Use a hose or bucket of water to rinse the pavers and allow them to dry.

3. Cleaning Wooden Pool Deck Stains

Wooden decks require more delicate cleaning to avoid damaging the wood.

Step 1: Sweep the Deck

As with other deck types, start by sweeping away debris to prevent dirt from embedding into the wood while cleaning.

• What to do: Use a soft broom to avoid scratching the wood surface.

Step 2: Use a Deck Cleaner

Apply a wood deck cleaner to the stained areas to break down the stains.

• What to do: Use a soft-bristled brush to scrub the deck, taking care not to damage the wood fibers.

Step 3: Rinse and Dry

After scrubbing, rinse the deck thoroughly with water and let it dry completely.

• What to do: Let the deck air dry and consider applying a protective wood sealer afterward.

4. Cleaning Tile Pool Deck Stains

Tile decks can be relatively easy to clean, but grout lines can trap dirt and grime.

Step 1: Sweep the Tile Deck

Begin by sweeping the tiles to remove dirt and debris from the surface.

• What to do: Use a broom or a microfiber mop to clean the surface.

Step 2: Clean the Grout Lines

For grout stains, use a grout cleaner or a mixture of baking soda and water to scrub the grout lines.

• What to do: Apply the cleaner or paste to the grout, let it sit for a few minutes, and scrub with a grout brush.

Step 3: Clean the Tiles

For general tile cleaning, use a tile cleaner or a mild detergent to clean the tile surfaces.

• What to do: Apply the cleaner with a soft sponge, then rinse with water.