Step 1. -- Dug a really BIG hole.
Just as it says, I dug a big hole... It took me about 5 hours to dig the hole in the picture below. If you have ever read any articles on making a pond, most will suggest you layout the shape of the pond in advance, but I think this is a bad idea. The reason is you dont really know what lies in the groung below and it is difficult to visualize the shape of the pond in 3-D so as soon as you start digging your plan will change and it should change because the unexpected is what makes nature so delightful, not just a big amorphic blob.
Step 2. -- Cut and Lay Bitumen Roof liner
This can be tedious, depending on the shape of the pond you dig. I used a propane torch to seal the overlaping edges as shown here.
I then cut 2" wide strips of liner and melted those over the seams. The strips seem to give a little bit nicer finish and hopefully prevent any leaks.
As I worked from seam to seam, there was a real need to use weights to keep the liner in a certain shape and prevent slipping when melting the pieces together. Fortunately I had some stones and bricks in the yard I could use to help keep the shape together.
There is still about 1/3 of the pond to cover with roof liner and now that the weekend is over, I will have to work on in the evenings after work. Hopefully I can have the rest of the liner in place by Wednesday night.
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