Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: we have a 30ft coach that looks as if it has a thin coat of kool seal on it. can we use this on top of the kool seal with out repercussions. Ty
Document: This product is great. The last time I resurfaced my RV ruber roof, I used Kool Seal. This product is much smoother so it doesn't get dirt stuck in cracks that is impossible to clean. Went on easy after I followed the instructions. Pour some out and use a squeegie to spread, then use a smoothe roller to smoothe out. This stuff is thick so using a roller only will not work. I would definitely use this product again.
), and roll out with paint roller. Keep working back and finish at the ladder. Allow to dry & cure for 2 days. 2 cans was plenty for one coat on a 27ftx8ft RV. Maintain surface by cleaning annually with bleach/water/detergent (do not use deck brush) and checking for rips/tears/holes. Reapply coating every 5 years. Only negative for me was darn bugs landing on it when it was wet and now I have bug "fossils".
other than some bubbling, so far so good. I will use it on other projects. thanks
Liquid Roof  went on just as they said it would and the result  was very good. I  expect the roof on my motor coach will be trouble free for years to come.
I had a small leak on the top front area of my camper. I cleaned the area and applied this product. Seems to be flexible and sticking well. Oh and no leaks yet.
The instructions say to use a drill and a mixer attachment to mix the harder into the base product. This is a requirement as the stuff is very thick and becomes thicker as the harder is added. And the harder does not really want to mix in too. Expect to spend 5-10 minutes just adding the harder and mixing. No way you can do this by hand.I applied 2 gallons to a metal roof on a 20 foot trailer.
I had a couple of leaks in my 20 foot camper roof, the caulk was brittle, and the roof was showing the black under coating in places. I put the liquid roof on, and after one rain everything is dry. This stuff is really thick. It is like spreading glue. I found it best to use a brush or spatula to put out several blobs of liquid roof, then spread it out with a squidgy, and finally us a roller to spread it some more.
one gallon did the job on my 9 ft. camper went on great and looks great. very satisfied.
Because there was a threat of rain the next day I applied the liquid roof in one day. I got up early to scrub and wash the roof then waited until afternoon to put the liquid roof on while the camper dried in the sun. It took about 3 hours to coat the roof and I finished just before sunset. It covers better than they claim. It only took two gallons to finish with a little left over.
Sealed roof with Liquid Roof after taping questionable seams with eternabond tape. Looks good, does not leak!!! Appears to spread farther than quoted rate by about 20 percent.
Answer: yes