What approximate area can be waterproofed with one bottle?

Hi the inner of my Zempire trilogy has become sticky and flaky (poly oxford). Do I need to get rid of all the old coating before I use this product?

hi, would this be suitable to reseal the outer fly on a Coleman 6person instant-up tent? purchased about 4-5 years ago but now getting drips through the fly seams in heavy rain.

Hi, Just wondering if this or one of your other products would work to re proof the fabric of my tent floor. It is allowing moisture through now due to age. I’ve re done the seals but it’s the fabric itself that’s letting the moisture thru.

Hi there, is this the correct sealant to use on the seams of my MSR hubba fly where the wax coating has started to flake off quite badly? Thank you.

Would this work with the fabric used on the Coleman deluxe 3x3 gazebo roof? If so, how many bottles do you think I'll need? Thanks.