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Q: You are having a vinyl liner inground pool installed today they did the vermiculite bottom but when they pulled out the ladder it left hole marks can this be fixed before they set the liner?
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Has anyone ever used sani-tred products in an inground pool with steel sides and vermiculite bottom?

Vermiculite is not a suitable substrate.

Footprints on bottom of inground pool liner?

I had an inground pool installed. We just turned on the lights at night and noticed footprints on the bottom. Can this be fixed? Call the pool company back. The bottom is normally sand mixed with cement. The liner will probably have to be removed and bottom smoothed. They should have checked that before installing the liner. Those printswi catch sediment and debris for the life of the liner.

What product do you use for packing the bottom of an in-ground pool before the vinyl liner goes in?


What is under the vinyl liner of an inground swimming pool?

There are two parts to a vinyl liner pool: the bottom and the walls. The walls are the first 3 1/2' down from the top, all the way around the pool. There are many different types of walls including galvanized steel, aluminum, fiberglass, polymer and concrete. The bottom, everything below the first 3 1/2' down, can be made from cement, a cement/vermiculite mix, a sand/vermiculite mix, a cement/sand/vermiculite mix, or just plain sand. What is used under the pool liner depends upon the preference of the pool builder and the specifications of the homeowner or contractor.

Do fiberglass pools have ripples on the bottom after they are installed?

Under no condition do fiberglass pools have "ripples" on the bottom after they are installed. Of course, the pool could have been damaged in some way, then improperly repaired, before or after it was installed.

Where can you purchase vermiculite to repair your pool and how is it applied?

Vermiculite is available at Garden Centers. They use it in for plants and trees. Also, Home Depot and Lowes. Vinyl liner pools are built on the cheap. Rather than pour an 8" concrete bottom, or even shoot on gunite, by first building a cage of wire and Rebar, they mix cement with vermiculite and trowel on a 4" bottom. Without the vermiculite, the bottom couldn't withstand the hydrostatic pressure underground, and would lift up like a volcanic eruption. The vermiculite permits water to come up thru the bottom because the cement is now porous. Installation is accomplished by mixing the vermiculite into the cement prior to troweling it onto the entire bottom, which includes the vertical surface up to the bottom of the 3 1/2' wall (steel, fiberglass, wood, or whatever). Experience mixing and troweling cement is advised. Good luck

How is cross bridging installed in a floor system?

The top of the cross bridging is nailed to the top of the floor joist before the subfloor is installed. The bottom of the bridging is nailed in place after the subfloor is installed.

Can you leave an inground pool swimming with concrete bottom and stainless steel sides with a hydrostatic valve empty over the winter?

Theoreticaly Yes

Is it possible to change a concrete pool into a liner pool if your inground concrete pool has cracks along the side down near the bottom?

Yes it can be done

How thick should the bottom and walls be when making a concrete inground pool?

the concrete should be 6" according to this site

How do you scrub the bottom of an 8 ft inground pool when it is very difficult to push the pole down that far?

You need a pool tele pole that is 8' and extends to 15' k

Is there a way to flush out the bottom drain of an inground pool when it has no suction due presumably to leaves and debris blocking it?

If they feel main drains are not required that brings their marketing/ sales practices into question.