I m planning on using a pond liner for the water proofing on top of osb3 boards.
Use roofing for pond liner.
There is a pond liner product cheaply available in the uk called flexiliner pond liner ldpe.
Next to seal the pores coat plywood with an oil based primer.
The joint between sheets should be positioned directly over a roof truss and securely fastened to prevent warping.
Although this procedure results in a weaker roof structure water tightness can be achieved if the application is performed carefully.
Securing the pond liner.
Some epdm pond liners might recommend the use of glue to ensure the tape sticks to the liner.
The triple layer liner is manufactured out of a core of hard wearing ldpe low density polyethylene which is then coated on both sides with a uv rot resistant laminate.
Then i unfolded the liner to cover the whole roof.
Allow an overnight cure.
The website says.
Clay particles are small and retain water well.
Although the two industries may seem similar roofing membranes may contain certain chemicals that could be dangerous to fish and other life in your pond.
When choosing a rubber pond liner it is important to choose one that is specifically being sold into the pond market and not into a different industry such as roofing.
In this method a layer of quick lime is used beneath the clay layer and then lightly compacted.
The product is non toxic and the only thing on the rubber when you get it is talcum that keeps.
Guttering for rainwater harvesting on the downhill side.
The roof area is 5metres x 5metres.
When covering a flat roof you want to make sure there is no overlap where moisture can wick under.
Some rubber roof or epdm manufacturers market their product to be used as a pond liner.
This durable seaming tape is safe for fish and plants and is designed to resist cracking.
If you completely want to avoid any kind of liners in your pond you can use lime and clay cover to make your pond retain water.
Lime and clay cover.
Use this waterproof adhesive to connect pond underlayment as well.
Product overview the seaming tape will allow you to connect and seal two or more pieces of pvc or epdm liner together to create a bigger pond.
Read the liner and tape labels carefully to see if this is necessary.
The pond liner was triple folded.