Tree Root Prevention In Landscape Drainage Pipes Without Gasket

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Molo

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Hello,
We are planning a drainage project and want to keep roots out. The pipe we are using is not a glued pipe and does not have a gasket seal. It has a bell and is pressure fitted together, which leaves it vulnerable to root penetration.

-Are there products we can use to create a water tight seal to prevent roots from entering?

-Are there physical or chemical barriers that can be used to keep roots out of the joints?

Thanks in Advance
 

WorthFlorida

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Belled ends are usually glued allowing no couplings to be needed, What type of pipe and brand? It's nearly impossible to stop root penetration with any joint not glued (cement welded joint). Is this the drainage pipe (perforated drilled hole type) used for a leach field. it itself or what leads away from the drainage pipe?
 

Molo

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Thanks for the reply.
It is double-wall ADS brand pipe. Corrugated outside and smooth inside. It does not have gaskets and is not designed for glue (that I know of). It is designed to be pressure fitted but is not considered soil or watertight. In our area freezing can be a problem, so glued pvc joints are considered less desirable than gasketed joints because the gaskets can expand/contract.
I am considering using a couple of different highly flexible polyurethane type caulks to "pack" the joint like a cast iron lead joint.



smooth-interior-corrugated-plastic.jpg
 

WorthFlorida

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You can try using aluminum foil tape. Nashua has many types of foil tape and one claims to be waterproof. Foil tape is thin and lays down very tight. A few wraps per joint should work. Flex Tape brand is a thick rubber like tape but if you try to overlap it, it leaves small gaps. It sticks well to itself but not other surfaces. Perhaps one wrap of Flex Tape where the ends meet end to end, then wrap the foil tape over it.

https://www.homedepot.com/b/Paint-Paint-Supplies-Tape-Duct-Tape/Nashua-Tape/N-5yc1vZcic2Z1xo
 
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