Car body undersealing

SuperTom86 · Post by **SuperTom86** » Sun Jun 25, 2017 1:11 pm

Hi folks, just wondering what everyone's opinion is on the best method of underbody and wheel arch rust prevention?

I've seen folk recommend a two stage method, 1st layer being a hard drying underseal then followed by a second layer of waxoil type product which remains slightly soft to absorb stone impacts etc.

Opinions welcome, thanks!

ATR84 · Post by **ATR84** » Sun Jun 25, 2017 3:37 pm

In terms of the arches, also protect them from the inside as they rust from the inside out. This involves stripping out some of the interior and spraying a cavity wax down there, something like dynax s50. For the general underbody underseal, dinitrol comes quite highly recommended.

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Sun Jun 25, 2017 9:40 pm

Yes definitely the most important thing on a prelude is to get inside the rear arches and sills with a decent cavity wax - Dinitrol ML or 3125 (ML is slightly more suited to the rear arches but 3125 would be fine)