[Brent Deines]

You are absolutely right. The pit resin is not simply a higher viscosity product, it is completely different, at least Delta Kits pit resin that is. One of the differences is that it is harder and therefore weathers and polishes better. Delta Kits low and medium viscosity resins are formulated to be more flexible, and therefore are better for injecting into the break than a thinned down version of our pit resin would be.

That said, many windshield repair technicians prefer not to use pit resin, or polish their filled pits. In fact, some are not even concerned if the finished pit area is not completely flush with the glass. The repair will hold just as well, but in my opinion it is not finished as well as it could be.

If you can't feel the break and the pit area is very small you can get buy without using pit resin, but the larger the pit area to be filled the more important it is to use the proper resin, and to polish the surface for optimal clarity.

To the best of my knowledge pit resin is never "required", but to me is the difference between a good repair and a great repair, but again, that is only my opinion.