First of all you need to select the insulation. The external wall insulation is available in bats having 15 inches breadth and 7 feet length. Generally fiberglass is available with paper support that is able to resist moisture. Another factor that you must consider while selecting the insulation is the R value. That is actually the depth of the filling.

Then you are required to compute some measurements. Calculate and analyze the dimensions of the external wall that is going to be filled. In order to get the perfect dimension of square footage of the side, you need to multiply the tallness and length. For instance, if the wall has got a height of 7 feet and a length of 7 feet as well then when you multiply them ( 7 into 7), the answer you get is 49. Hence you require 49 square feet to fill. The filling would contain a plan on the face of its parcel that will let you know about the insulation that a single bag would provide. Suppose that if a single bag will fill 20 square feet, then calculate by dividing 49 by 20. That would mean that you require around 2 bags of filling bats for this task.

For your protection you are required to put on secure clothes, comprising of full sleeves, protection glasses for the eyes and dirt cover as well. The filling may form fiberglass dirt that can harm the lungs and skin as well.

Finally, remove the external wall insulation from the packing. Set the filling in between the hoops of the wall and remember to set it in a way that the paper is not in front of you. Turn the paper lips on the surface of the hoop and fix them. Carry on with this process till the time the task is over.

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