Epic Resins specializes in custom formulated adhesives designed specifically for superior adhesion to photovoltaic cells. We have a wide variety of solar panel adhesives, from quick-curing adhesives for attaching the junction box to the PV panel to two-component aliphatic polyurethane compounds with exceptional UV resistance.
I strongly urge you to avoid using any adhesive for solar panels. Keep in mind that flexible solar panels don't last long. You will probably need to replace them every couple of years. That will be a challenge with them glued in place. For rigid panels, the best adhesive would be M6 bolts. These are rigid panels being mounted on aluminium brackets.
If using spray glue, ensure that you have a reasonable distance between your hand and the solar panel not to create any droplets that could interfere with electrical contact. You will need to press down hard on both sides of each panel, just enough for it to stick but not too much that you damage the cells!
A flexible solar panel can be glued to any surface, and it'll function as perfectly as screwed rigid solar panels or rails. The decision on what strategy to use to mount your flexible solar panel can be a tricky one but don't stress as we're here to help you out.
How much adhesive do I need for a solar panel bracket?
If you're using adhesive you want as much surface area connection between the bracket and the roof. A couple inches of bracket may not be enough. Using adhesive under Unistrut that matches the full length of the solar panels is much better. But I'm a lot more comfortable with actual fasteners.
For rigid panels, the best adhesive would be M6 bolts. These are rigid panels being mounted on aluminium brackets. I'll actually be replacing one of the factory panels and notice they only use adhesive. M6 bolts make sense for strength, my concern is they introduce an entry point for moisture.
If you're installing solar panel arrays on a metal or concrete roof, eliminate the need to drill holes. Our adhesives securely attach photovoltaic solar panel mounting rails to the rooftop without damaging the roof's structural integrity or letting elements such as rain and bacteria seep in through these holes. Have a Question?