paint great but your roof sealer is not uv proof and fades.

Hi, I purchased 30 20L containers of house paint to paint my house. My entire house was painted with Fired Earth, so I have been loyal. The paint is good, however I could not afford to also paint my roof tiles as I needed 2 x 20L drums and the labor cost would have extended beyond my budget, so I only purchased you Damp X roof sealer to seal all the tiles that needed it. I really loved your sealer as it was the exact color of my current terracotta roof tiles, so it blended perfectly, However it is not UV proof and fades to a much lighter color after 2 months, leaving my roof looking like a patch job. I had to repaint with Damp X again but again it faded. Thus a 3 star. Now I purchased a different 5L roof paint and hoped it would match and it now looks worse. I am throwing money away. Could you at least give me 2 x 5L terracotta roof paint, if it does not fade like your sealer, and if it is a dark terracotta color similar to dampx, so that I can try to fix. I did support your brand extensively as you can see.