Unroll the first row of polyethylene in the crawlspace next to your longest foundation wall and cut it to the length.
Plastic lining basement walls and floor.
Should i use visqueen or plastic sheeting on one side or the other of the framed basement walls the answer is no.
We ll still install a drain and sump pump along the perimeter.
Tape a one foot by one foot square of plastic sheeting plastic kitchen wrap will do to the concrete wall in your basement with duct tape and leave it in place for 24 hours.
As we mentioned earlier the basement is naturally humid because of its location below grade.
A common question people have when finishing a basement is.
If the ground is uneven smooth it with a tamper or a 2 by 4.
Water vapor in the warmer air of your home begins to condense on the colder surface of the glass of water.
Waterproofing a basement with dirt walls and floors is very similar without the jackhammering.
How to use plastic as a vapor barrier in the walls.
Then remove the tape.
Thats exactly how i was taught 20 years ago and still use that exact method hasnt failed ever.
However we also very strongly recommend installing a plastic vapor barrier on the walls and floors as moisture can easily pass through the dirt and create a humid space.
Not a vapour barrier so damp and salts from the unventilated cavity can eventually reach the inner wall decorations.
Think of a glass of ice water.
Plastic will keep moisture from moving through the wall.
Air gap membranes a modern vapour proof barrier lining it is a dimpled plastic sheet fixed onto brick stone block or render with plastic plugs to form an air gap cavity.