We have been fabricating liners for over 35 years and we have found that the perfect thickness for a pool liner is 20 mil.
Dark vs light pool liner.
The science behind water color.
Now one other thing to consider is how the bottom of a pool shows dirt.
Dark colored liners on the other hand can give your pool a rich bold look and make your pool seem deeper.
Darker liners will also make it more difficult to see debris and dirt in your pool.
Gray produces a dark blue water color in sunlight sandy or tan makes for a mild green color and white produces clear light blues.
The same liner in one pool can look completely different in another pool.
The biggest reason is simply that they typically do not live up to pool owners expectations of 100 light refraction on the surface of the water and a jet black pool.
Compared to the light pool liner we like the darker liner for several reasons.
Pure white light contains all colors in the visible spectrum.
Pool liner replacement contractors tend to shy away from black pool liners in general.
In fact a pool can look different at different times of the day or under a cloudy vs a bright sky.
A black colored pool liner can make seeing the bottom of the pool difficult and associate greater depth.
A dark pool liner may convey or give the feeling of deeper water as in a lake or ocean.
It does add some some sparkle life depth compared to the lighter liner.
But as liners become darker they are more inclined to fade over time due to uv damage and chlorine.
So picking a perfect pattern involves balancing different factors.
The only time a thicker liner may be necessary is if the floor of the pool is very rough.
It is the best thickness for fit flexibility and strength.
A light pool liner can create more of a beach or tropical feeling and environment with light colored water.
Deep blue a darker liner is more likely to absorb sunlight and therefore can help to warm your pool water.