# jun Polyurethane Foam Frame Kit **URL:** \ **Category:** SON240sx Automotive\ **Created:** [February 13, 2007, 5:05pm UTC](https://forums.speedlife.net/t/jun-polyurethane-foam-frame-kit/103759 "2007-02-13T17:05:12Z")\ **Posts on this page:** 1\ **Showing post:** 12
**Author:** ![BAS](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bas/32/5540_2.png) [@BAS](https://forums.speedlife.net/u/BAS)\ **Post date:** [February 17, 2007, 10:14am UTC](https://forums.speedlife.net/t/jun-polyurethane-foam-frame-kit/103759/12 "2007-02-17T10:14:31Z")
Guess you missed that chemistry class “urethane is hydrophobic, and bonds to the steel surface” … Hydrophobic means,( in this case), that the material will push away any water it comes in contact with and will not absorb any water in the process. Of course like any body mod, you never do it to a dirty or wet chassis regardless. But what moisture ‘might’ be in your rocker or any box frame part will be pushed away… this assumes that the thermo chemeical reaction hasn’t evaporated all the moisture before hand. > [@ALL GONE](https://forums.speedlife.net/t/all-gone/11401/10): > > I assume you could use heat guns and pump the heat into the rockers (via holes) before you do the urethane infill. That way you could possibly dry out any kind of moisture on the interior before the infill. --- _[View the full topic](https://forums.speedlife.net/t/jun-polyurethane-foam-frame-kit/103759)._