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How Much Does It Cost To Replaster A Pool?

Get free estimates from local swimming pool contractors.

Discoloration, stains and cracks can prevent you from fully enjoying the look and feel of your swimming pool. Replastering the interior restores the pool's appearance while maintaining the structural integrity of the pool. Homeowners should know what to expect when budgeting for a pool replastering project so they can estimate DIY or professional costs.

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Table of Contents

  1. Replaster Pool Costs
  2. What Is Plaster?
  3. Why Replaster A Pool?
  4. DIY Or Hire A Pro?
  5. How To Replaster A Pool
  6. Alternatives To Pool Replastering
  7. Find A Pro

Replaster Pool Costs

In addition to what homeowners spend on average to maintain their pools, they spend an average of $564 to repair their swimming pools. For a more detailed view of the potential costs of replastering, consider the following:

  • Pool replastering supplies: $180 to $204 per 120 square feet
  • Labor: $380 to $517 per six hours
  • Total average cost for 120 square feet: $560 to $720
  • Average cost per square foot: $4.66 to $6

Why Replaster A Pool

What Is Plaster?

Plaster is one of the most common surface materials for the interior of inground pools. It provides a waterproofing layer that protects the structural components of the pool shell. When pools are installed, pros typically build the shell by applying concrete or gunite over a steel structure. Both concrete and gunite are porous. Maintaining the integrity of the plaster helps keep the structural integrity of the entire pool intact. It also provides a smooth surface to walk on and adds the pool's cosmetic appearance.

Why Replaster A Pool?

You invested money in installing your pool, so periodic replastering is necessary to maintain its appearance. Over time, the plaster can crack and stain, preventing your water from looking clear and sparkling clean. Plaster also helps maintain the pool's structural integrity. Signs that it may be time to start planning to replaster the pool include:

  • Mineral Stains: Copper, iron and other minerals in the water can stain the plaster, giving the pool a dingy look.
  • Gunite or Concrete Appearance: Gunite is a durable substance used to create the basin's structural support. Plaster provides waterproofing to protect the gunite or concrete used to support the structure.
  • Scratchy Surface: Lumps, bumps, jagged spots and rough areas are some of the first signs that alert many homeowners to replaster. If your plaster feels rough or unpleasant to the touch, it's starting to wear thin.

How To Replaster A Pool

DIY Or Hire A Pro?

Unlike replacing a vinyl liner, replastering typically requires heavy equipment that most homeowners don't own. Some of the tools needed include a sump system, concrete mixer, air compressor, tile saw, pneumatic chisel, concrete tools and polishing disks. Renting or buying all the necessary equipment can quickly add up and inflate the cost of a DIY project.

Save time and frustration by hiring a contractor experienced in pool repairs and refinishing to make sure the plaster is applied and cured correctly. Because pool plaster cures under water, you will probably work with your contractor to maintain balanced water chemistry and the ideal conditions for curing the plaster. When done incorrectly, the plaster is more prone to staining and breaking down.

How To Replaster A Pool

Replastering a pool requires careful preparation and a variety of tools, including a diamond masonry blade to cut under the tile line, if you're keeping the tile border. Additional tools and materials include:

  • Cleaning Solution
  • Acid Wash
  • Paint
  • Air Compressor
  • Air Hammer
  • Cement Mixer
  • Sump Pump
  • Hose
  • Wheel Barrow
  • Sander
  • Chisel
  • Plaster Mix
  • Paint
  • Shovel
  • Face Mask or Goggles
  • Gloves

Prepare the Pool

Use the sump pump to drain the pool completely before cleaning it and identifying problem areas. Use a chisel to remove loose plaster and sand any sharp edges twice to make sure the entire interior is clean and smooth.

Acid Wash

Apply acid wash to the interior of the pool. Use a special acid brush to spread the wash evenly over the old plaster. Rinse the acid wash thoroughly with a hose and allow the surface to dry before applying a bond coat for replastering. Allow the bond coat to dry for eight to 10 hours, or overnight.

Alternatives To Pool Replastering

Apply Plaster

Mix the plaster according to manufacturer instruction and apply a layer at least 3/8-inch thick with a trowel. Fill cracks or holes and spread the plaster evenly for a smooth surface. Let the plaster dry before applying a second 1/4-inch finishing layer.

Paint the Plaster

Allow the plaster to dry before applying a coat or two of pool paint. Cover the entire interior of the pool evenly and allow the paint to dry before refilling the pool.

Alternatives To Pool Replastering

Maintaining the liner is one of the hidden costs of pool ownership; however, homeowners have several alternatives to replastering their pool. Replastering offers the most cost effective way to resurface your pool, but you can save time with temporary fixes such as patching or acid washing the plaster to remove stains. Alternatively, you can resurface the pool with different materials to achieve a completely different look.

  • Patching: Homeowners can temporarily fix small cracks or worn areas by patching the area or filling it with caulk and applying a layer of pool patch materials.
  • Acid Washing: Acid washing strips the surface layer of plaster, exposing the layer below to give the finish a renewed look. It's a good option for pools with stains, but not for pools with worn plaster.
  • Resurfacing with Aggregate: Aggregate is plaster mixed with pebbles or quartz. It adds a stylish, attractive and long lasting finish to the pool.
  • Tiling the Pool: Although this is the most expensive alternative, it also offers the most dramatic difference in appearance.

Find A Pro

Save time and potential frustration by hiring a professional to replaster your pool. Pros have the experience and skills needed to quickly and effectively complete this project while providing optimal results.

Get free estimates from local swimming pool contractors

Last updated on Feb 13, 2017

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