We will have skirting all around the home. Any suggestions on how to proceed is appreciated. What would you recommend for Mississippi, crawl space of an house?
The contractor brought some rolls for the walls — And some needles — to hold the insulation up. What would you say? I was told R6 is as high as you can get. Is there a different scale? Or different climates require different strengths? Surely the higher the R value the better regardless of climate? Thanks all for your input. How can I achieve R49 rating with only 6 inches of joist space?
Can I insulate rafters and floor to achieve recommended R49 value or close as possible? How do I determine my final r factor when i use different types of insulation material? For example. In need of advice ASAP. There is some fiberglass bat between floor joist upstairs, I cant get at it all. There are knees causing more issues for access.
The number one concern, do i put platic vapor on top of fiber and blow about 20 inches or more, or blow the celluse on top of fiberglass with no vapor barrier? The next, do i insulate roof board and vapor? If so, I live close to Atlantic Ocean in high wind area in winter. I am going to tackle this week as the temp. Any help or comments appreciated. It will be placed over waterproofed densglass and behind a rainscreen system out of porcelain cladding materials.
I understand that the R rating on this is R-7 per inch. Is there any reason this is not a good application for this system? For those of you insulating a crawl space, try the Roxul brand made out of spun stone slag.
It maintains its r value when if wet, is impervious to mold and insects, and can be friction fit between the joists and will not sag or come out without having to use strips to hold it in place. It also has a little bit more R value. I used it in the remodel on my ranch and it is pricy, but the best stuff out there short of spray foam- cuts with a bread knife into any shape needed! I built a porch on my house. It has a flat roof built with all 2x4s. I would like to insulate with r I want to keep as much moisture out as I can.
Any suggestions? In response to Karly: This response surely comes too late to benefit you, but others may be wondering the same thing. Yes, you are seeing R-values expressed in different scales. The US has not converted to SI units of measure. It may be expensive to remove and this is the best option. 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.
Rock wool insulation is made from grounded Balsamic rock, it has no asbestos, is itch proof, and is fire resistant to degrees F, I am an engineer who specifies this on all my projects.
I am doing moisture control in my crawl space sf —moisture is coming in from ground because crawl space is lower than outside of house—I am putting down plastic on crawl space and insulation under the floor and want to know if it should be turned up against the inside of foundation and around the support pillars and taped to make a complete barrier??
I am also going to use a dehumidifier to dry out what wood is wet—I had this home built and have lived here 50 years, John West.
R-Value, while an industry standard and is one the general public readily understands to some degree, unfortunately, is somewhat of a mis-statement. The better measurement is actually U-Factor.
What is the difference. U-Factor is a measure of a component assembly in its conductive and radiate capacities. Let me explain… when the general public hears an R wall insulation, they believe that in fact they have an R insulation value in their exterior walls.
The truth is this, studs have an R-value of 3. U-factor is a unit of measure used in assembly of building components like windows and door units that have multiple components which have varying conductive and radiant values. One of the posts above indicated they needed an R polystyrene. So, while the R-value may increase in rating, the benefit received for your expenditure drops dramatically.
A window assembly rated at U-factor. The point is this, conductive and radiant properties of an assembly are much more important and relative to the measure of effective insulation properties. R-value is a simplified term used for the general public but is not necessarily descriptive of an efficient building system. In Texas we see attic temperatures of what…. Install thermal reflective barrier, we see the one to three degrees or so over ambient temperatures the same temperatures found under a shade tree.
Reduce the thermal heat load and you reduce the AC requirement. This is a fact. Even attic ventilation can not end the radiant thermal load from a hot roof, only thermal reflective barrier can. Heat that mass, and it will heat your ceiling. Then you have to pay to cool the air, the ceiling and the mass insulation again.
I have felt ceilings in the south in summer and they were well over degrees! AC systems running constantly. Yes, fully insulated attics and insulation and the ceiling was over degrees!
Many older homes do not have the space available for R30 plus insulation. Stop the radiant heat from hitting your attic insulation and you stop the house from heating, period. Radiant barrier does this and when installed under the rafters it will retain its reflective properties for many, many, years. Thermal reflective barriers work, when installed and used properly.
Ask any of the tens of people I have installed reflective barrier for; they have no hot or cold spots in their homes. They have significantly lower utility bills. Their homes are actually quieter! It seems there is a lot of confusion over radiant barrier. Firstly it does work very well when installed correctly. That means not laying it over your insulation so it can conduct.
Staple it under the trusses below the underside of the roof, start at the bottom and work up overlapping as you go then tape seams with foil tape. You must have air flow, so soffits and ridge vents are necessary. Or go one step further use 2 inch foil faced foam board with an R13 rating. So the air in the void is the same as the out door temp, you can go a step further and use spray adhesive, to attach your R30 fiber glass to the foam board.
Im really having a tough time figuring this out. I live in North Dakota, I would think insulation would be rather important. Question: I have a church flat roof and I want to put insulation between the joists which are 8 inches deep. I was recommended to use R19 FSK batts to do the job. I need to replace all of my insulation due to problems with critters.
I was told to replace with cellulose as the R value is highest. But I am worried about moisture problems and mold. I also wonder if any type of insulation is treated with boric acid to deter critters. Awesome tips. Makes it SO much easier. I learned something new today — that attics should have an R-value of at least 49!!! My husband and I want to save on energy bills by having new insulation installed in the attic of our older home, hopefully within the next few weeks.
Glad to hear you enjoyed this content! I have an interior wall between my bedroom and kitchen and sound come through. Would it help to insulate and what is best, blown in or foam? I like this idea! Sounds brilliant to me! Totally doable, Nikki-Autumn! Can you over insulate an attic? Can you put r19 in 2x4 walls? What R value do I need? What does r30 insulation mean? What is r20 insulation? Is r38 attic insulation enough? What does the R mean for insulation?
How much does r38 insulation cost? Batt Insulation Pricing. What is the thinnest insulation with the highest R value? Aerogel insulation. Does doubling the insulation increase the R value? What is the thickness of r38 batt insulation? What is the R value of 12 inches of blown insulation? What is the R value of 2 inch rigid insulation? Choose the right type of rigid foam for your needs.
What is the R value of 8 inches of fiberglass insulation? Fiberglass Batt Insulation Characteristics. What is the best type of attic insulation? Loose fill. How thick should insulation be? Which insulation has the highest R value? Similar Asks. Popular Asks. Due to the rising costs of energy, even homes built in have more attic insulation than those built just four years earlier.
How much insulation do you have now? Use a ruler to figure out the depth of the insulation in inches. Measure from the floor to the top of the fill. If your attic is currently uninsulated, you will likely need a higher R-Value Resistance-Value to make sure your home is properly insulated. What temperate zone do you live in? Locate your zone and then proceed to the corresponding number in the checklist below. Minimum and recommended insulation amounts vary from state to state, and even county to county.
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