There are many different types of pond liners. Individual variants are also "sanded" or "graveled". You can read in our article what these films are used for and what applications there are for them.
Sanded pond liner is hardly recognizable as such
Sanded foils
As a rule, pond liners are only roughened on the surface, some liners are also more structured. The side up with which the pond liner is installed can differ in each individual case.
Some foils are also covered on the top with a layer of sand or with a layer of very fine gravel. The carrier material is usually additionally coated with fleece on the underside to make it more stable.
However, sanded and gravelled liners are generally not sufficiently dense to be used as the sole liner in ponds. In any case, a "regular" pond liner must be placed under them.
application areas
There are various areas of application for sanded and gravelled foils:
- for landscaping ponds
- in streams
- as a means of cleverly concealing the capillary barrier
Shore design at the pond
Due to the need to set up a capillary barrier, the pond liner must always be brought out over the embankment and placed in a small ditch next to it. This is necessary so that the pond water is not "pulled out" by the surrounding soil due to the capillary effect.
Of course, the black foil lying over the edge of the pond is not a particularly attractive sight. In order to conceal this sight, you can either lay embankment mats or a second, sanded or gravelled liner over the actual pond liner.
This also offers the additional advantage that the actual, very UV-sensitive pond liner receives important protection. Under the influence of UV light, UV film ages very quickly, then becomes brittle and brittle and breaks. The gravelled liner on the top helps to keep the sun's UV rays away from the pond liner and thus protects it against aging and embrittlement.
lining of streams
Streams in the garden can be sealed using various methods. As a rule, concrete is used here or work is done with stream shells, but foil solutions for lining the stream are also possible.
Since the underside of a stream is always visible through the clear water, an ordinary pond liner is usually very annoying. If sanded foil is used (or placed over it), the optics of the watercourse are much more natural.
Hide capillary barrier
The foil, which is routed over the embankment and into the pond ditch, can usually only be partially hidden. If you put a sanded pond liner over it, the optics appear much more natural. If you don't necessarily want to plant plants around the edge of the pond, this is definitely the most attractive solution.
tips
You can also let the stone foil hang over the edge of the pond into the embankment. This gives the pond bank a particularly natural look.