Greetings,
I want to add insulations to my walls. I would like to find out what my options are and the pros and cons of each.
My home is ~1400 sqft ranch style house build in the 1950s, with no insulation in any of the walls. The outer wall is just drywall followed by stucco. Although the winter is not too cold here (~35f when really cold, typically around 40-50f normally), the house cools down pretty fast after I turns off the furnace. My bedroom, which happens to be west facing, is damn cold in the winter and damn hot after a summer day. ;) The attic is insulated.
What are my options for doing the insulation? I heard there are those who can add a foam type thing to your wall, but they have to punch multiple holes in the wall for it? How well do those work?
My grand plan is to redo all the drywalls, adding insulation to them, adding ground wires to all the electrical outlets. Etc. New drywall and new painting will sure make the place feel very nice. Another reason to redo all the drywalls is I also like to add insulation to the inside wall as well, so I get better sound insulation inside the house. Currently you can hear what anyone is doing in anywhere in the house.
What are these R numbers people are quoting for? For the outside wall, what type of insulation should I put in and what R value? I assume it would be better than punching holes in the wall and blow insulation in them right? I saw some fiber glass type insulations at Home Depot, do they do a reasonable job at insulating sound as well?
Would adding a plywood layer (in addition to drywall) on the inside of my exterior wall in the west bedroom add any insulation value? That room just cools down so fast and gets so hot in the summer because of the sun hitting it all afternoon.
If redoing the drywalls is prohibit expensive, then I may just go with the foam thing. Anyone know how much it will approximately cost for doing the drywall?
Thanks a lot!
Raymond