Insulate detached garage in Texas??

[Captain America]

I'm finishing out my detached garage and I'm located in central Texas. Before I put up an osb interior (walls and ceiling), should I go ahead and insulate with faced insulation in the walls? I can blow insulation in the attic at any time.

The garage will be used for parking vehicles and doing projects. I will have a large workbench along one wall. I do not plan on putting in AC or heat. I'm afraid if I insulate it will become stuffy during the summer, and we have a lot of heat down here.

If I decide to insulate NOW is the time!!

 

[YukonXL04]

I plan to insulate my detached garage and I'm in texas lol. Don't know what it will do in the summer, but it will certainly help in the winter. A little space heater to take the chill off and then you can work in your garage through the winter

 

[65cayne]

I cant tell you how to insulate, but I will recommend to go ahead and do it (if anything) to keep the heat out and not radiating through your walls. Oklahoma here...yes the heat *****.

 

[CNGsaves]

You WILL want insulation . . . absolutely. However, only jump into insulation until AFTER you've done all your rough electrical . . . and rough lighting.

While you're at it, consider black pipe steel in wall for natural gas feed for heater (if needed). Could even consider in-wall copper/black pipe steel for airline system.

I'd sure use screws to put up the OSB so at least you could change your mind later. Caulk the joints/perimeter when putting up USB and you'll have more airtight garage as well.

 

[buzz4041]

Insulate it for sure. It will reduce the heat inside the garage dramatically.

 

[NUTTSGT]

Hands down, insulate.

Even if you're not heating/cooling now, there's a chance that you may in the future. It's easier and cheaper to do it now rather than later. Once it's insulated, it'll help with temparture swings inside.

 

[MushCreek]

Yes, insulate. You may decide to add HVAC later on. The insulation will help keep the heat down. Make sure you figure out a way to get some ventilation once it does heat up. Add a window or something, preferably across from the overhead door so you can air the place out.

Our house is well insulated. This time of year, I open the windows in the evenings, then close them in the morning. The house stays cool all day. Yesterday, it was 86 outside, but only 73 inside. You can do the same thing with your garage- capture the cool air at night, then close it up during the heat of the day. If you don't want to leave the garage open, run a ventilation fan at night.

 

[DC73]

Yes, insulate. You'll be glad you did. The insulation will block summer heat gain into the garage and block winter heat loss from the garage. If you have windows, you can open them at night and close them in the morning to help make the space feel cooler during the summer days.

No real need to use faced insulation if you get a good deal on unfaced. If you don't mind spending a bit more money, consider Roxul Mineral Wool insulation. It's fireproof, blocks sound, stops air movement better than fiberglass and is R15 whereas standard fiberglass batts are R13 (you can order R15 fiberglass).

DC

 

[JoeFin]

I do not plan on putting in AC or heat. I'm afraid if I insulate it will become stuffy during the summer, and we have a lot of heat down here.

If I decide to insulate NOW is the time!!

Keeps my shop cooler during the hot days and warmer during the cold days - without heating or cooling the space


Really I don't see a downside to seriously insulating the walls and attic space - that is unless you like condensation forming and rusting your stuff

 

[930dreamer]

A friend has a 30x40 shop fully foam insulated. I went it and it was 20 degrees cooler than outside.

 

[Captain America]

Thanks, I'm going to go ahead and insulate. I rather have it done now than hating myself for not doing it later. I'm going to use R-13 faced insulate so I can staple into place and blow in the attic at a later date.