I'm building a shed using untreated wood. I have the floor built and walls framed but before I put them up I want to waterproof the bottom of the floor. The floor rests on stone blocks so it is off the ground. I'm wondering if I can use something like flex seal to coat the bottom of the floor to protect against nighttime moisture and rain splash. OR I know I could use something like thompsons water seal however I've heard you have to use that once a year and once the shed is built I will not be able to get underneath the shed to do it again. Just wondering what is best to do between both aforementioned ideas or if anyone has any ideas that might be better and more permanent. I don't forsee a lot of water getting under there but I don't know what is best. Thank you for any help you can give.

I am in the process of have a new roof installed. I was a quoted a terriffic price by a local reputable roofer, and he wants to install Tamko Heritage three dimensional fiberglass shingles. 30 yrs on the shingles, 5 year warranty on the install. So being a natural skeptic, I started scouring the web for information and personal reviews on Tamko. I found a real large amount of negative reviews(from homeowners). There is a few class action lawsuits currently pending against them, and it appears that the most common negative review was that Tamko puts a disclaimer on all their shingle packaging(that the homeowner never sees)that says that ALL claims against them must go thru arbitration with them directly, and they get the final say on the outcome of each case. So you cant sue them for breach of warranty? Or at the very least during arbitration, they will argue every piece of evidence(installers fault, weather beyond control, ect) that points to them not being responsible. So does anyone on here have any personal knowledge or experience with Tamko? Theyre not a new company, but Im wondering if they are getting cheaper with materials. All contractors have their personal favorites Im sure, and this guy Im hiring has been installing Tamko for over a decade with very few problems he says. Should I ask for another brand if Im uncomfortable? What about GAF, Certainteed, Owens corning brands? Any personal favorites? Thanks for the feedback.