After examining under the house with about a 16 inch crawlspace, I have discovered that there is no insulation or sub floor. This detail is used with both new construction and also with renovation work. I am in the process of modernizing a 1960 ranch, on the water in Downeast Maine. My son and I got into the attic this past weekend and guess what we found??? Is the moisture beads of water? In response to Karly: This response surely comes too late to benefit you, but others may be wondering the same thing. By installing insulation on the outside of the framing it causes the location of the dew point to move to the outside of the wall assembly. Specifically, R-value measures how well insulation can resist temperature transfer through the material, with high R-values indicating a higher resistance and a better insulation value. Any input would be greatly appreciated. Expect to pay about $300 for a basic 3-by-5-foot fiberglass unit. Thanks, what is the thinnest product that you have out there that can achieve a R = 16.8? I will most likely replace almost all the interior sheet rock and insulation as I redesign the framing. For Example: Foundation Drain, Framing, Cracking, etc. Wood,plastic, or fiberglass air? John Cannamela Did you end up getting an answer to this question? What do you think about the Henry Blue skin over plank siding on a 1960 ranch with 1/2 inch foam board over top? I used poli-iso, fully taped, windows set on top of the foam, and then rain screen details. (10-Bags) Price $ Thanks. On North Fork of Long Island I have 1921 home, attic tongue and groove floor over 2×6 joists. The claims for the savings for radiant barriers are often inflated, or under special conditions. Thank for your input. Any advice you have is greatly appreciated, thanks! The next, do i insulate roof board and vapor? Good luck with your project! Why can't I install it the other way?Regardless of whether insulation is installed in a wall, attic, or crawlspace; the paper facing should always face toward the inside of the home. Stay on topic. I live in a mobile hom ewith vaulted/cathedral ceilings…my heating bill in the winters is terribly high. The builder is saying R-21 is better but he has no clue as to how much better it is and I have no clue whether it’s worth the addition cost. I know you mentioned that house wrap under the foam is the recommended order of operation but based on what I have found, it sounds redundant. I have 2×4 studs for walls. I need it to stay 50-60 degrees in the shop in the winter. Hi Rachel, Tyvek recommends putting the HomeWrap over the foam board. Do I need to worry about moisture getting in and not getting out? I plan on putting up 2in foam and then another layer of tyvek. I’ll use only moisture resistant sheetrock. That’s a loaded question, are the walls inside insulated? Keep in mind that wool will need regular upkeep and maintenance. Over the years someone has installed alum siding over that. Enough for? An even more effective way to build an interior wall is to mount 1/2-inch gypsum wallboard on special resilient channels or clips that across the wall. Install thermal reflective barrier, we see the one to three degrees or so over ambient temperatures (the same temperatures found under a shade tree). thanks, can anybody calculate this and which insulation will be best insulation? Good luck. He sheathed all the sides of his home (took him 8 years for all 4 sides) before re-siding. It has what looks like paper backed batting insulation. 1″ foam on the lower is a potential double barrier if the lower walls are framed vs block. The house was build in the 70’s. I live in a double wide mobile home in Central NY, for the past two years I have had little to no heat at one end of our home, we found animals got under the home(no basement) and destroyed part of the under belly. 1/2 inch doesn’t effect any of the window and door trims typically so it’s used quite often. Thanks for the info, Todd. that is the case with all the electronics that you put in a Faraday cage if they are locked in the Faraday cage for protection you can not use them so you don’t need them. I was thinking the bottom because then the water could come down the roof edge onto the plexi-glass which would be 1/2 and then down onto shingle which would be attached to 1/2 in decking. Vitals. I would like to switch to vinyl siding. Is it plywood, then building wrap, then siding? What are your thoughts?! A sliding patio door is a glass door, half of which is fixed in place and half which slides over the fixed portion. How can I achieve R49 rating with only 6 inches of joist space? It’s lightweight and practically indestructible because it’s fire-proof and insect-proof. x 96 in. Continue for a look at how fiberglass windows are made and the ways they can light up a house, inside and out. http://www.infraredsurvey.com. In Indiana. I also wonder if any type of insulation is treated with boric acid to deter critters. Thank you, That is a very standard detail. This is only the top half. Probably the best bet is to get a local insulation company out, ask them for an opinion on any moisture issues. Also, is the exterior of the wall sheathed with OSB or something else? OK. I’ll make sure I seal the sheets well. If you don’t create a dam for the insulation to pile up against you’ll block off the path that the fresh airflow needs to travel. It appears that I should put in batting face side to floor and am considering using a basic plywood across the joist. Stop the radiant heat from hitting your attic insulation and you stop the house from heating, period. Be nice. Are you aware of any product on the market that is high density batt that will give me the 1 inch air flow. Here's how to clean brass. Kim asks, "On your show you said that when insulating under a floor, the paper facing should face up against the flooring. I took all my siding off put up a tyvek vapor barrier. The area has to be sealed off and an amateur should not be opening up such an area only professionals with the proper protective gear; Mask, eyes, clothing. We've put plenty of synthetic parts into the building (like the fiberglass insulation.) You might want to screw them on with drywall screws and a cordless drill so you could easily take it off in case it floods and the insulation gets soaked. which is better and cheaper and easier to put in myself.i know how to blow insulation but im confused whick one or the other would be energy efficient as well as savings for my home. I live in Alberta Canada and am worried about condensation. You have entered an incorrect email address! He stated no further insulation under the shake since I do have insulation under the bead board and the concern is what I’ve read above about condensation. It seems there is a lot of confusion over radiant barrier. Todd, I am considering building a new house. We can get to 0 degrees on the cold nights in the winter. Glad to hear you enjoyed this content! You can’t glue single ply membranes or built up roofs to either EPS or styrofoam. If you have sufficient insulation, it doesn’t matter if you reflect the radiant heat. Thanks. How do I determine what is worth the addional cost of R-21 for new construction in WA State on the Puget Sound. 2) Should we use plywood at the top two feet? I am either going with spray foam or wet cellulose. Learn how your comment data is processed. For a 16-by-7-foot flush wood door, you can expect to pay from $400 to $700. ( salts in the water that form on the surface) lines on the walls: which would be from outside in? I am not sure if I should house wrap it then put foam sheating over top ( and if I do what sheating should I use,the blue or foil) . Any opinion about putting Tyvek over or under the foam insulation. So investing in good insulation is always a great investment. Johnson Manville makes a low itch fiberglass that has plastic on the faces, but not sides, I have used it to insulate walls and it is easy to use. Drip faucets when the weather is below freezing. Bottom line is exterior foam insulation is a good investment. If you go with cellulose, my preference is using the BIB system with dry cellulose. Since I have no insulation, I should see a huge difference in comfort and bills just from the R-30! I have put helped my dad add fiberglass batts years ago, and I wore heavy jeans, dust mask, gloves, etc, and showered after and still got the itch. But different websites have me concerned about creating moisture issues with the sheathing in either case. In this article alone, there are numerous replies from our staff, as well as responses posted by other visitors to the site. Yes insulation will help. Hi Allen, If your masonry basement walls are dry, I would use faced insulation, with the paper facing in toward the living space to prevent moisture from the warm inside air from condensing on the cool masonry walls. I understand that the R rating on this is R-7 per inch. So you have to use mechanical attachment. It now has roughly 3 to 4 inches of blown cellouse insulation. I converted a deck to a sunroom. Makes it SO much easier. Will this cause any condensation issues. I have felt ceilings in the south in summer and they were well over 110 degrees! I am going to check this weekend to verify if I have 2 x 6 or 2 x 8 joists and if they are 16 or 24″ centers so that I can buy the right size of insulation. The foam will help a bit with noise. I am Finishing my basement and have come across moisture in the insulation that is wrapped around the basement walls and is wondering if that is common, also what I should do about it? The insulation is compressed to 3 1/2″ and has higher density, but lower air volume. The roof is flat and the square that is the roof/ceiling is 8 feet shorter all the way around the room than the floor. In most homes, but especially in older homes, adding insulation in the attic will cut heat loss.At a minimum, homes should have attic insulation between R-22 and R-49 (6 to 13 in. You only need a radio to listen to something all the time. Basically it creates another drainage plane that helps protect the sheathing and framing from damaging water infiltration. You’ll also need to pay attention to window and door extension jamb depths as they will increase if the window is mounted flush with the foam board. By Todd Fratzel on Insulation, Siding & Trim. Spaying expandable foam insulation is a job that should be left to professionals. but I would prefer to do my own labor. If a 1 inch layer of XPS foam is installed it can result in an immediate increase in R value of 5 (20% increase for a wall with 6″ of R19 fiberglass). Excellent article Todd! Will insulation help with the noise. Do I just nail/staple it to the bottom of the house? I was recommended to use R19 FSK batts to do the job. Hi Don, we are thinking of doing the exact same thing to our house in Ottawa, except our house is Angel stone instead of stucco. Is there any reason this is not a good application for this system? The next best approach is using spray foam in the wall cavity. If I buy faced and staple with facing close to floor, at most I will leave an inch and half from the bottom of the joists. DIY or hire a pro? This air flow should assist with moisture evaporation, so I think the 6.5 inch, R-19 will be ok. The last two projects we built the architects had the foam on top of the building wrap.I think this is good because it allows the building sheathing to breath and not trap moisture against the sheathing or siding. I live in northern Kentucky. My cape style home in New England was built in the mid-late 1950s. If you don't, you'll have to make the opening smaller, or worse, enlarge the opening to fit the new window. This is a very dry area but should I use a vapor barrier with the insulation.
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