You will never believe what the fabric is, it is septic tank liner that was purchased at Home Depot. It is very similar to gozemeer. It comes is different size rolls. We used 4 foot wide rolls which were 1500 sq feet at a cost of $130 per roll. It took about 4 rolls for the whole project. So the cost was about $500 without the labor and time. We worked on it for about three days.