The only sure way to tell you is to do a heat load calculation on your 4200 ft2 home. Such things as windows, insulation values and other factors effect the size of the unit or units that you would need.
Multiply the height of the wall space by the length. This will give you the square footage. Rolls of faced and unfaced insulation are generally sold by square footage. Make sure you take out for windows and doors (especially the overhead garage door).
200 cubic feet.
It depends on your location, shade, windows, and insulation. You should be able to find a local A/C contractor who will do what's called a J-load calculation. There are also online calculators that will give you a rough approximation if you have an idea of how good your insulation and windows are.
86 percent we need
form_title= Insulation Contractors form_header= Stay warm with new insulation. What portions of your home need new insulation?*= _ [50] How old is your home?*= _ [50] How cold is your home in the winter?*= _ [50]
form_title= Home Insulation form_header= Save money when your home is well insulated! How old is your home?*= _ [50] What rooms needs to be insulated?*= _ [50] Do you need to fix old insulation? *= () Yes () No
well everybody needs insulation it is heat and cold air in the winter you need warm air and in the summer you need cold air the stay at the body temp
Houses need insulation to keep indoor temperature manageable. Without it, the heat or cool air conditioning a home owner puts inside will not be contained.
No way to answer, what style of house, how tall, how many rooms?
Insulation materials for the home are readily available in many brands. It is best to select brands that are familiar to the consumer, such as, Energy Star. It is advisable to ask the sales representative in home improvement stores like Lowe's and Home deport which type of insulation material is best for a particular need. Insulation comes in foam, fiberglass and even wool material and all of them are considered good and do the job intended.
2100 - 4000
form_title= Insulation Installation form_header= Install insulation in your home. Does your home currently have insulation?*= () Yes ()No Do you need to remove insulation?*= () Yes ()No What room(s) need insulation?*= _[50]
Yes
I think you need somewhere around 2100
Plastic deteriorates in the sun. Good insulation is very important. I suggest going to home depot. They have free classes.
form_title=Spray Foam Insulation form_header=11383 How would you best describe the area in need of insulation?*= () Wall framing is exposed / unfinished () No framing exposed - walls to remain intact () Not sure How would you best describe the nature of the project?*= () Insulation for existing home () Repair/Replace existing insulation () Insulation for new construction/addition In which place do you want to install the foam insulation ? (Mark all items you deem fit)*= [] Non-masonry walls [] Attic [] Ceiling [] Floor [] Roof [] Foundation walls [] Masonry walls