I saw that ad, too. The issue that occurred to me is that the Interprotect barrier coat that I used (and that Chuck described), at least as I understand it, relies on multiple layers - not merely thickness -- to enhance protection. In other words, multiple layers are not recommended simply because they build up thickness. There's something protective about the multi-layer barrier.
From: John McCrea via CnC-List <cnc-list@cnc-list.com> Sent: Wednesday, March 17, 2021 3:29 PM To: 'Stus-List' <cnc-list@cnc-list.com> Cc: John McCrea <johnmcc...@comcast.net> Subject: Stus-List Interlux InterProtect High Solids All, I saw this advertised at Defender and also from Jamestown Marine. Has anyone tried it? Thanks. Choose Interprotect HS & Paint the Same Weekend Get longer lasting, proven protection above or below the waterline with this high solids, low-VOC, 2-part epoxy primer system. Versatile enough for use on all substrates in a variety of situations, apply it to fiberglass hulls as a barrier to repair or prevent gelcoat blistering. On metal hulls and other underwater metals, it creates a protective shield against corrosion. InterProtect HS also has quick dry and consistent overcoat times so it's ideal for use as a no-sand primer on new or unpainted fiberglass hulls. Its high solids content yields a high-build coating that is not only durable, but cost-effective because fewer coats are needed to achieve the recommended dry film thickness, and its low VOC content complies with the most restrictive VOC regulations.
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