I had a flat roof sunroom addition added to my home over a decade ago. Everything was great for several years, then the roof started leaking. I had three different roofing contractors over a period of 5 years come to solve the leaking. I spent thousands of dollars with the different contractors. I always thought the problem was the fact that the flat roof was installed under the main roof and it was not done correctly. I had seen the advertisements for the flex seal spray. I watched the product line grow and continue to use buckets to catch the leaking. I live in central Florida. The leaking would always start after heavy rains. After my frustration reached its peak I finally went up on the roof to see if what I thought was true. Prior to going on the roof I had decided I would try the flex seal products. My inspection revealed tiny slits in the roofing seals. I also own a 2013 forty-five foot RV and was familiar with flat roof problems. After seeing for myself the issue I went out to purchase flex seal products. I purchase the tape, spray and roll sealant spending around $90 total. I cleaned the roof so I could see the small slits. I applied the spray and noticed that is would seep into the slits and then reopen. I continued to use the spray until the seeping stopped. I then applied the tape like a patch making sure all air bubbles were removed. Finally I applied the roll-on flex seal making sure the edges around the patch were covered. The roof covering was white so I use the white roll-on to finish the job. I took my time making the final application look professional. No more leaking since my DIY repair. I will use a $100 solution over a multiple thousand dollar repair anytime. The products worked for me when correctly applied.