Top tips to help you with the liner you need
Budget Consider the whole project; budget for all the materials you are going to use. Then consider the type of liner you think you can afford, but don't penny pinch on anything over 6 sq mtrs (60 sq ft). Minimum 0.5mm or 45mls. Familiarize yourself with what is available. See what they feel like and try to see them in the ground. Gauge opinion from other pond owners. Buy off the roll when you can or choose from pre-cut sizes
Pond Liner Tetra Pond Xavan EPDM Liners - Standard Cut - 13.1'x13.1' Pond Liner
This Florida USA based ponds liner supplier is expert on building ponds
To estimate the size of the liner for a pond:
length of liner = (length + (2 x depth))+10%
width of liner = (width + (2 x depth))+10%
To estimate the size of the liner for a pond roughly:
Length of liner =Length along the horizontal + (2 x height of the head)
Width of liner = width of widest header pool + (2 X depth) Plan your pool with a dimension that plus the depth times 2, equals a standard width of liner off the rolls. EPDM generally comes in multiples of 5feet up to about 25feet (American you see), PVC and butyl in 2 metre widths up to 8metres in some places. Dramatic indentations in the shape use up extra liner. Measure along the contour of the pool excavation just to check before you try to install it. In desperation you can gain a few inches by laying it in skew, using the extra length of the diagonal. Risky though. Don't stretch it into place. I don't care how many books tell you. It needs to be tucked and folded into place. Just before you cut too much off around the top, then you can make sure it is properly fitted by filling it with water. Use underlay and sand especially in gravely and stony situations. The pressure of water magically causes stones to float up through the sand and press against the liner. Very odd. You also need to double the underlay for conservation projects or projects where the liner is going to be totally obscured by stone work. Having considered everything, you though you might have a bash at going au naturelle clay puddling after all, or even using concrete. Well, my advice is put a liner underneath as an insurance. It will also mean that you wont have to use the proper 15cm thickness of concrete or clay as you run out funds or energy!
Pond Liner Tetra Pond Xavan EPDM Liners - Standard Cut - 13.1'x13.1' Pond Liner
This Florida USA based ponds liner supplier is expert on building ponds
Tetra Pond Xavan Liners - Standard Cut - 16.3'x13.1' Pond Liner
This Florida USA based ponds liner supplier is expert on building ponds
Tetra Pond Xavan Liners - Standard Cut - 19.7'x19.7' Pond Liner
This Florida USA based ponds liner supplier is expert on building ponds
Tetra Pond Xavan Liners - Standard Cut - 19.7'x26.2' Pond Liner Tetra Pond Xavan Liners
This Florida USA based ponds liner supplier is expert on building ponds