The rough excavation should be 2 below finished depth.
Sand cement pool bottom.
If you add lime the mixture will be 15 gallons of sand 6 38 gallons of cement and 1 12 gallons of lime.
There are three types of pool bottom materials that can be used for inground vinyl pool construction.
A combination of portland cement sand and vermiculite.
If you re still unsure of which sand you want to use for your swimming pool project we recommend speaking with a local expert such as braen supply.
Above ground swimming pools are generally less expensive and more for the budget minded consumer.
The more vermiculite that is used the weaker the concrete will be.
Adding sand to the bottom is usually preferred as it is less expensive.
Sand portland cement the combination of sand and portland cement is the next step up from using sand and merging.
Mix mortar for laying flagstones flooring bricks and tiles.
It will also make the mortar more waterproof.
Sand cement grout mixes produce a concrete that is not porous and that will not let water pass through it when hydrostatic pressures build up under the bottom of your pool.
Your strings should be set up at finished.
Keep in mind this type of floor material is much more likely to leave foot prints and impressions that you can still see even after the liner has been installed.
Once the sand floor is troweled smooth exit the pool and immediately install the pool liner before debris blows in or rains come your way.
Use a ratio of 3 parts sand to 1 5 parts cement.
Sand or vermiculite for my above ground pool.
Pre mix vermiculite pool floor.
A sand floor will need to be re troweled whenever the liner is replaced in the future.
Final swimming pool floor grade.
Different pool bottom options sand.
Step 8 prepping the bottom.
It s true that concrete sand is an excellent choice for creating a level surface beneath an above ground pool but the particle size of the sand may be bigger resulting in the chance for voids.
A concrete pool floor is the best pool bottom you can get and the only way a top inground pool builder will build.
The ratio here is 4 parts masonry sand 1 part portland cement type i or ii.
Pre mix vermiculite and a sand mix.
No water needed for this just keep it at a four to one ratio and mist it when done to help it set.
The most common and also the most expensive pool bottom is a pre mixed vermiculite sold as pool base or pool mix.
There are varieties of materials to use for pool base sand cement and vermiculite cement.
Adding hydrated lime to the mixture will reduce shrinkage cracks.
If your pool contractor is using sand to put in your pool bottom fire him on the spot.
Vermiculite bottom a vermiculite bottom pool is a mortar mix that uses some sand and some vermiculite as the aggregates.
