Re: trunk floor pan repair/replacement

Posted by BH On 2013/10/31 20:23:37

Ironically, while POR-15 does not like to stick to shiny surfaces (including new metal), it cures to a glass-like surface to which nothing else seems to stick well - at least, not without additional, special preparation.

Originally, the supplier suggested that a mist coat of conventionl primer could be applied while POR-15 was still 'tacky' - that is (in their words), dry to the touch, but with a slight finger drag. However, due to a bad in the application of a mist coat urethane-based primer, I've been looking into use of their own primers.

While both their Tie-Coat and Self-Etching primers can be applied over fully-cured POR-15, Tie-Coat is a high-build product (like conventional autobody primer, and sandable), which might not be necessary in this case. In contrast, their Self-Etching primer is also available in aerosol form, cures in only 30 minutes (ready for topcating), and does not require sanding - hence, might be more appropriate. I have no idea how this compares to other sef-etching primers, but personally, I would prefer err on the side of caution and use the proprietary product over POR-15.

Might be best to call the supplier's help line, and provide details on the adhesive product to be used with the flocking, to be sure you will have the best result.