ᐅ Which acrylic does not yellow over time?

Hi everyone,

I’m now working on the final finishing tasks in my renovation. I have many details like gaps between door frames and walls, as well as between baseboards and walls, etc.

My contractor told me to always paint over acrylic sealant because otherwise it yellows. However, I have read that this is not always the case and that there are acrylic sealants available that do not yellow. Since the walls are already painted, it would be a huge effort to mask off the door frames and baseboards again just to apply the acrylic, paint over it, and then remove the tape immediately.

It would be much easier if I had an acrylic sealant that doesn’t yellow, so I could simply apply it, smooth it, and be done.

Do you have any recommendations for an acrylic sealant here that I don’t have to worry about yellowing?

And one more question: For nailed baseboards, to cover the nail holes, what material would you recommend to avoid any color differences on a baseboard finished in RAL9016 laminated (painted) surface?

I would either use Otto acrylic (e.g., Ottoseal S70) or even better, avoid acrylic altogether and choose a hybrid sealant (e.g., Ottoseal, Illbruck, Sikaflex). I have had very good experience with M 360 Ottoseal—applied outdoors without yellowing, even with a lot of sun exposure. In my opinion, the M 390 would be a perfect option for interior use.

Our flooring installer recommended a lightweight filler for such purposes: Pufas L10. It is very easy to work with and is said not to yellow over time.