Faced insulation which way

How thick should foam board insulation be? Foam board insulation is easy to use and is a great DIY way to add some insulation. Some types of thicker foam board insulation are available, but they may need to be special ordered. Is foil insulation any good? This works well for most insulation materials, because conduction is the main way they prevent the movement of heat. Foil insulation works slightly differently, however.

It means that foil insulation is going to have a higher U-value, but may well perform better than expected in the real world. What is foil faced insulation used for? Foil Faced Insulation. Insulation increases comfort and reduces utility bills. Foil faced insulation is the best type of insulation for retaining heat in the winter and keeping heat out in the summer.

This insulation product is designed to slow heat transfer and enhance acoustical performance. What does the foil do on insulation boards? Foil covering is claimed to add to the insulation value where the board faces onto an air gap. When the board is covered on both sides the foil adds no value.

Almost all of the boards were perfectly fine for sticking in a roof. Can I use plastic sheeting as a vapor barrier? In simple terms, a vapor barrier is a material that won't allow moisture to pass through it, such as plastic sheeting. It's designed to stop the moisture before it can enter the wall cavities. Search titles only. Search Advanced search….

New posts. Search forums. Log in. Welcome to the new and improved Building Code Forum. We appreciate you being here and hope that you are getting the information that you need concerning all codes of the building trades. This is a free forum to the public due to the generosity of the Sawhorses, Corporate Supporters and Supporters who have upgraded their accounts.

If you would like to have improved access to the forum please upgrade to Sawhorse by first logging in then clicking here: Upgrades. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser. Which side should the insulation paper face. Thread starter joetheinspector Start date Feb 28, Joined Jan 1, Messages Where in the code or insulation installation instructions does it say which side the paper should face?

I have always heard that the paper barrier is supposed to face the warm side in the winter which would be the floor side in climate zone 5. Someone has installed the insulation with the paper facing the crawl space side. If is alright how should I do it in order to have ventilation and at the same time vapor barriers to avoid condensation issues?

Do I applied vapor barrier outside the metal then the blue foam boards, plus plaster or first the blue foam the vapor barrier and then the plaster or blue foam, plaster vapor barrier. Going under the house is not an option for me or my children, the best solution is fixing the problem from outside. Any suggestions thanks in advance for your help. I have a metal storage building what would be the best insulation to use before I finish off the interior wall.

Mike, Yes, you should put unfaced insulation either rolls or batts on top of existing insulation, so that you only have on vapor barrier facing the heated house. We recently purchased a house with an addition that has an unfinished, as no heat, no electricity, in the basement of the addition. We plan on eventually finishing the room. But would like to enjoy the space during winter months -If pink insulation vapor barrier closest to the floor or on the out side of insulation -foam insulation.

Is it worth the cost? Thank you for your time. If I am using paper faced rolled insulation between rimed joist in the basement and first level subfloor which way should the paper go — towards the outide of the house or towards the inside of the house?

Is it better to use faced or unfaced rolled insulation in this case? Ken, If the basement is unheated, put the facing up toward the first story floor. Landscape fabric would also work. I bought Poly Shield insulation board which has an aluminum layer on one side. Still a bit confused. I am trying to insulate above the rim joist in the basement.

If I use faced insulation should the paper go towards the outside of the house or the inside? The insulation is against the wall NOT towards the first floor. Or, should I use unfaced?

My thoughts were I would use faced so there would be a barrier for moisture coming from the outside wall. Can I just remove all doubt and potential moisture and go with unfaced and get a good barrier of insulation? Ken, On basement walls, the vapor barrier facing on insulation should be toward the outside of the house. It is also a fire hazard to have the paper visible, as the treated paper will contribute significantly to a fire.

Thank you Ben and Tim! Tim, I had read that paper faced insulation must be covered appropriately because of the potential fire hazzard.

Thanks for giving that important reminder!!! My main concern are the hot water pipes. Should i peel the paper off and safely install over it? Make sure you get the right size for your pipes. I have always used unfaced insulation between two heated areas. It does not make much sense only it cuts down on sound a little, I use R30 with steel wire supports, Richard. This information on fiberglass and the installation of insulation is so important, thank you for sharing your advice for everyone to read.

I worked for an insulation company for many years, and I was surprised at how many times people would install their fiberglass insulation in the wrong direction.

There was not enough ventalation in our crawl which has caused the insulation to hang. Is there a fix for that rather than having to replace it all? I could see the paper back as soon as I took out the wall. My question is was it properly installed? Can I just put additional insulation on top of the old one? I need your advise. Thank you. My husband is putting up fiberglass insulation in his barn and was wondering which way it should face if he is using it in the ceiling?

I live in south Georgia, near Savannah; should the facing in my crawl space insulation face the floor or the ground? I am planing to used the attic on top of the garage. I wonder what type of insulation I should use in the ceiling, and if it is necessary to insulate the floor, and what kind of insulation I should use? I have a garage door and area to store a boat in my basement like a walk out in the winter months.

I live in MN. The floor above this space gets cold in the winter. Although there is heat in the basement, this area can reach 45 degrees in really cold months, due to the fact that there is a garage door.