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Project Sports

Questions and answers about sports

What is under vinyl pool liner?

3 min read

Asked by: Michael Sosa

Underneath the liner is a sand or cementitious floor, troweled into place. The floor sidewalls come up to meet the walls, which are commonly 42” x 8 ft panels made of galvanized steel or thermoplastic. These walls are supported from behind so that they won’t bow out against the weight of the water.

What is under my inground pool liner?

And over here is the a pool skimmer that skims the top of the water.

How are vinyl liner pools installed?

How Vinyl Liner Pools are Installed – A Simplified Summary

  1. After laying out the pool, an excavation crew digs a hole according to the pool’s specification.
  2. The pool’s wall as then installed. …
  3. Pool bottom is installed. …
  4. Plumbing inlets and outlets are set in the walls. …
  5. The vinyl liner is installed.

What kind of sand goes under pool liner?

mason sand

The sand that lies underneath your pool is called “mason sand”, while the sand for your filter is simply called “filter sand” or “silica sand”.

What is the best base for a swimming pool?

If installed correctly the sand base floor will not have any major divots. When your pool is completely filled with water this base material will be just as hard as most in-ground pool bottoms.

How do you fix the bottom of vermiculite in a pool?

Use a one part portland cement to one part sand mixture. So that way it's easier to sand off your edges with a masonry sanding block when you're finished.

How thick do the walls of a pool need to be?

between three and four inches thick

Generally, the pool walls need to be between three and four inches thick. Smooth the pool walls with your trowel, as you did for the base. Now the concrete has to cure properly before you can fill it with water. The concrete curing process allows the concrete to reach maximum strength and takes approximately 28 days.

What can I use for pool walls?

Steel Vinyl Liner Pool Walls

  • 14 Gauge Steel with G235 (Z720) galvanized coating is standard for the industry, however, thicker and stronger steel is available by request.
  • Self-Piercing, Auto-Locking, Double Zinc plated and Carbon Steel rivets.
  • Steel walls are compatible for over 200 different vinyl liner pool styles.

How long does a resin pool last?

around 5 to 10 years

Resin Frames



While resin is a pricier option than steel, the benefits certainly make up for it. The hard plastic can withstand sun damage, warping, and oxidation. Perhaps one of the best benefits of a resin pool is that the installation process is fast and simple. The lifespan of a resin pool is around 5 to 10 years.