u/Bickfordd

Image 1 — Best sealant for heavy UV exposure
Image 2 — Best sealant for heavy UV exposure
Image 3 — Best sealant for heavy UV exposure
Image 4 — Best sealant for heavy UV exposure
Image 5 — Best sealant for heavy UV exposure
Image 6 — Best sealant for heavy UV exposure

Best sealant for heavy UV exposure

Just picked up a job to re-seal the exterior joints on a large glass panel wall and wanted to get some input before I begin.

There are 60 panels at roughly 3.3' × 8.25' each, the wall is angled (not vertical), and it gets pretty much constant direct sun exposure throughout the day. A few of the existing joints are leaking, so I'll be going up in a 50' lift to clean out the old sealant as best I can and reseal everything.

My main question is around sealant selection — I normally use Bostik neutral cure 100% pure silicone, but with the constant UV exposure on this one I feel like there may be a better option out there. Would love to hear what you guys would recommend for something like this.

Also open to any tips on prepping aged joints from a lift, or anything specific to working on an angled surface (sag, tooling, etc.). With 60 panels to knock out I want to make sure I'm using the right product and approach so this thing lasts.

Any advice is appreciated — thanks in advance!

u/Bickfordd — 8 days ago