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Question:

Polystyrene or injected foam insulation: which one is better?

I'm replacing my wood garage door (which is attached to my home) with a steel door (because it's cheaper), but I don't know which insulation to useHome Depot offers the board insulation and another company is offering the injected foam insulationWhich one should I use.

Answer:

Here's my versionFriendship Cake - 30 Day Cake CAKE 1 box yellow cake mix 1 sm Box vanilla instant pudding 2/3 cup Oil 4 x Eggs 1 1/2 cup Fruit only.no juice 1 cup Nuts- pecans are best DO NOT REFRIGERATE.USE ONLY WOODEN UTENSILS.STORE IN COVERED CONTAINER FIRST DAY: In large bowl combine 1 1/2 cups starter juice, 2 1/2 cups sugar, 1 large can sliced peaches, drained and dicedSTIR DAILY FOR 10 DAYS TENTH DAY: add 2 1/2 cups sugar, 1 large can chunk pinapple with juice STIR DAILY FOR 10 DAYS 20TH DAY: Add 2 9ozjars marashino cherries drained and diced.I use both Red and green ones STIR DAILY FOR 10 DAYS 30TH DAY: Drain fruit- save liquid- you will have enough for yourself and 2 Friends (1 1/2 cups each)You are ready to bake 3 -cakesThe contributor added: Mix all ingredients and bake in a greased bundt pan 300 for 1 hourI serve it plain as after it cools I usually pour about 1-1 1/2 oz of rum over it to add flavor.very good!
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yes you need itthe 2 poly insul will be an r-value of 10 and you would still have 1.5 of space left in a 2x4 wallyou can buy 2x4 fiberglass insul w 13 r-valuethe fiberglass is easier to do in wood frame structures as the poly is usually prescored at 16 to place between metal studsso cutting it at 14.5 for wood studs can be a painDO NOT use 15lb felt paperit is not an approved vapor barrier it is a moisture barrier and you would have to either tape the seams or cut to break on the studsjust use 4mil clear plastic that comes in rolls from home depotregardless wether or not there is tyvek or another brand of home wrap on the exterior, you need plastic wrap over the insulationexterior home wrap is designed to let the wood behind it breath, not to stop air from infiltrating the home.
you make itIt takes thirty days before it can be used in a cakeThe instructions are part of the recipejust mix all the juices and spices they tell you to reserve and give to a friendThis is the starter, and the reason it is called a friendship cake is because it takes a real friend to be patient enough to make the starter and keep it around for thirty days, and then just give it away!!!

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