Figuring out the right lot size without losing your mind

Good call on sealing the mirrors - regular indoor mirrors outdoors are usually a recipe for disaster. A couple things I'd add from experience:

- Silicone caulk definitely helps, but make sure it's specifically rated for outdoor use. Some indoor silicones degrade pretty quickly in sunlight and temperature swings.
- Even under cover, humidity can still creep in. I've had better luck adding a coat of outdoor-grade paint or primer to the back before sealing. It gives an extra barrier against moisture.
- Also, mounting them slightly tilted downward helps water run off instead of pooling around the edges. Learned that one the hard way after a mirror started rusting at the bottom edge.

Honestly, though, if you're not into regular maintenance or checking up on them every few months, outdoor-rated acrylic mirrors might save you some headaches. They're pricier upfront but hold up way better long-term.

I've actually had decent luck using regular mirrors outdoors without sealing - just mounted them under a deep overhang. Been up for almost three years now, no rust or moisture issues yet. Maybe climate plays a bigger role than we think?

"Maybe climate plays a bigger role than we think?"

Climate definitely matters, but I'd say placement and airflow are just as crucial. I've installed standard mirrors outdoors a few times, and the ones tucked under deep eaves or porches always fare better. Moisture buildup happens mostly when there's limited airflow or direct exposure to rain. Curious though - did you mount yours directly against the wall, or did you leave a small gap behind for ventilation? I've found even a tiny gap can make a noticeable difference over time...

"Curious though - did you mount yours directly against the wall, or did you leave a small gap behind for ventilation?"

I learned this the hard way myself... mounted mine flush against the wall initially, and moisture was a constant headache. After adding just a small gap, things improved noticeably. Placement really does matter.

I went with a small gap from the start - mostly because I overthink everything and spent way too long reading horror stories online, lol. Glad to hear my paranoia paid off for once... moisture issues sound like a nightmare.