Finishing garage drywall?

[JRingo]

I'm in the process of finishing my late 70's ranch two-car garage. It had one duplex outlet on the back wall (along with washer/dryer) and one CFL bulb coming out of the ceiling near the washer...pretty lame lol.

I used the existing switch and single bulb wiring to install four duplex outlets in the ceiling for four Costco LED shop lights. Last weekend I installed exterior sconces on both sides of the garage (on a timer), outdoor exterior outlets on both sides and four outlets in the garage (on two new circuits- one for high amp tools).

The garage is roughly finished drywall. The front wall surrounding the garage door is bare framing (made the sconces and outdoor outlets easy). The drywall joints are a mix of level 2 and 3.

Can I add mud over the existing tape or do I need to pull it off and re-tape? Some of it looks like it's curling up at the edges.

After I'm all done with the drywall, I use a PVA primer for all the walls and ceiling?

How much does it cost it to fill walls with cellulose? It would just be one full wall (8x20-25ft), the front wall around the garage door and maybe 8' on one other wall. The garage door is not insulated...any DIY stop-gap measures to insulate it?

Thanks for any input

 

[NUTTSGT]

First off, I'd advise you to put general location in your profile, it'll help your fellow members to give you the best advice for your locale.

Make any other wiring is done before you try to blow in cellulose insulation. You can buy bags of insulation at one of the big box store and should be able to rent the machine to do so. If they offer free rent with a certain number of bags purchased, you might want to do the math to get "free" rental. You'd be better off spending the "rental money" on more insulation for the house attic than on machine rent, get something for your money.

Drill some holes (use a hole saw) at the top of the wall and blow in the cellulose till she's full. Once that is done, repair the hole and finish the drywall. If the current tape is peeling off, I'd pull the loose stuff off and retape.

Your garage doors can be easily insulated with rigid styrofoam panels. There have been some other threads on insulating over head doors.

 

[Kmt803]

Cellulose bag coverage will depend on wall thickness if the wall have 2x6 you will get
48sqft coverage,for a 2x4 wall you will get 80sqft.