Garage door insulation

Good evening lads.

My attached garage in my new place in FL becomes a furnace during daylight hours. Doesn't help I guess that its painted a dark'ish color. Anyone use this kind of stuff on the backside of the door to keep the temps inside down? Seems to be all positive reviews from what I read, and trying to work out there during the day is great if I'm trying to sweat off some extra water weight, but short of that its a bit annoying. Curious of any first hand knowledge.

https://www.amazon.com/Reflective-G...f-4657-b40e-ab93cdffd883&ref_=pd_gw_ci_mcx_mi

 

does the door face east or west? You can insulate the door with rigid polyiso... lil pricey but will cut down on radiant heat gain. Biggest issue is garage walls arent typically insulated.

 

Looking on Google maps the door actually faces directly due west.

 

shade is your friend. Any way to get an overhang or awning?

 

Nope

 

blowing in insulation in the attic will help. did that in my garage years ago and made a difference (i live in Fl as well). haven't insulated the garage door but that would be a good idea with something like you posted or suggested above.. i have a window unit AC in the back window that i turn on an hr before if needed but haven't used that in some time..

 

I'm seriously pondering making a chilled water AC unit for my outbuilding using a discarded pool heater heat exchanger and heating my pool as a side benefit.

I have one of these I was just going to cut the copper out of and take it to the recycling center next time I take in cans.



I'm thinking, build a sheet metal box for it, get a small fan to blow through the box. I'll probably need a drain pan for condensation. Hook up 2" pvc with a pool pump inline, and remove heat from the outbuilding where I don't want it & put it into the pool where I do want it.

 

I have a west facing 1 piece steel door, double wide, and insulated the backside with some 1.5" or something like that foamboard. Makes a huge difference, as before the steel would get scorching hot, with direct inside air contact.

 

Won’t be effective.

Well, be effective maybe for cooling the outbuilding from 110 to 109, but won’t do shit for putting heat in the pool.

Talk to a local pool contractor on a pool heat pump system using an evaporator in the outbuilding. I’ve seen them spec’d but have never actually seen one installed on a pool up here. May be more common/effective down south.

 

Dammit... But that's not some cheap Redneck Engineering that I can cobble together myself.

 

If it were me, I’d buy a new, insulated garage door. Install it so it tightly wedges against the framing, as it closes. Install garage door weatherstrip. Then, install a mini-split HVAC setup, so you can maintain a steady temp and humidity level. If your garage isn’t airtight and climate-controlled, all your stuff will rust, down here.

 

if you live right near the coast ? maybe. Salt in the air can be an issue along the coasts. been there/done that. but you don't need climate controlled garage to keep things from rusting down here for most part. see any rusty cars down here ? and most aren't even in a garage at night..

 

Despite my Pensacola garage being very tight, my stuff (tools and bikes) rusted without climate control. Now, I’m down in SWFL and everybody’s garage stuff (tools, chests, washers/dryers, steel doors, etc) is rusted. People I know with nice cars and bikes have their garages climate-controlled. The humidity and high dew points constantly expose everything. Salt isn’t a necessity.

Yes. I occasionally do see rusty chrome on cars. However, most vehicles have plastic trim, these days. My Triumph Tiger, under cover in my courtyard, is rusting away. I just spent $200 replacing some of its hardware, with it needing a bunch more stuff. Even the frame is rusting where stuff bolts to it. My VFR and SV are kept in my living room, as my time in Pensacola started their hardware corroding.

 

Good deal.....I guess i'll order some and make a weekend project out of it. Seems like a 30 degree temperature difference would be pretty huge....and this is on a white painted door......mine's like a mocha color so I'd imagine its absorbing at least a little bit more heat.

 

A roll down, retractable sunshade from your roof's overhang will make a huge difference. A lot of options to choose from, at different price-points. Keeping the sun from baking it is key, and all of the other suggestions here are good also.

 

and insulate your garage attic.. you think the heat radiating off the door is bad, your entire ceiling in the garage is radiating heat from the hell that is up there too. may already be up there, but worth taking a look. made huge difference at my house in Tampa.

 

Dont bother with ac unless the ceiling is insulated.

 

is this a single family or townhouse/multi family?

 

Good suggestions above, for the door itself I'd go with this in whatever thickness fits the door best- https://www.homedepot.com/p/R-Tech-2-in-x-4-ft-x-8-ft-R-7-7-Rigid-Foam-Insulation-310891/202532856

bonus- whether it's foil or white foam facing inside, it will brighten up the space when you're working out there.

 

my garage was hot as well in my new home, so I went to Lowes and bought the foam board insulation then sealed all of the openings along the bottom and it's a big difference! Took a short bit of time and was relatively cheap.