Why is "reflective insulation" still being sold by HD and Lowes
网页2013年12月7日 · I stopped by my local HD for more supplies and was surprised to see rolls of "radiant barrier" bubble wrap on the shelf. Lowes and online vendors sell products with similar claims. For example, here are the benefits promised by a leading vendor: "An easy-to-install double reflective, double bubble insulation R-values range from R-3.7 to R-21 …
Is Bubble Wrap Duct Insulation a Good Idea?
网页2010年8月23日 · Insulation. Senior editor Martin Holladay was next, picking up the “snake oil” theme and going on to say any claim that bubble wrap is the equivalent of R-6 duct insulation is a “scam and a fraud.”. He specifically cited a company called Reflectix, which makes a 5/16-inch thick material consisting of bubble-wrap plastic between layers ...
Which way should the foil facing on polyiso rigid foam face?
网页2017年12月16日 · I was thinking of not sealing the perimeter prior to installing the rigid foam to give any moisture entering the cavity an avenue to escape. Although no moisture should really be entering the cavity from the inside and to the best of my knowledge, polyiso is vapor-impermeable (not sure about the 1 part foam but I think it is vapor-permeable).
Stay Away from Foil-Faced Bubble Wrap - GreenBuildingAdvisor
网页2014年3月21日 · This R-1 product can be used to make Halloween costumes, but should never be used as insulation. Foil-faced bubble wrap is a thin product that comes in a roll. Its R-value is dismally low. Most brands of foil-faced bubble wrap are only 3/8 inch thick or less, and have an R-value of only 1.0 or 1.1.
Reflective insulation in attic - GreenBuildingAdvisor
网页2010年10月31日 · You are better off spending the money on air sealing and beefing up the insulation. Reflective barriers work the best when a building is not well insulated, But the reflective barrier will only help reflect radiant heat, it does nothing to stop conduction or convection. If your house is not air sealed and does not have at least the code R value ...
Reflective side in or out? - GreenBuildingAdvisor
网页2016年3月29日 · Ccloud | Posted in Energy Efficiency and Durability on March 29, 2016 10:31am. I am covering my home with 2 layers of 2 inch rigid foam. The outer layer of foam has a reflective side and a non-reflective side. I live in Wyoming, zone 6. I am using furring strips covered with a combination of Hardie Plank and metal.
Does Reflectix “Big Bubble” insulation really achieve R-6?
网页2018年4月16日 · This product specifically states on it in big red letters “R-8 WITH AIRSPACE” and “R-6.0 WITHOUT AIRSPACE.”. The company’s website says “The product provides an R-8.0 when installed with a 0.75” air gap between the duct and the insulation, and R-6.0 when installed direct to the duct without a spacer.”.
Beware of R-Value Crooks - GreenBuildingAdvisor
网页2009年3月3日 · Insulation scams for products like P2000 rob unwary consumers by exaggerating R-values. P2000 Georgia, an insulation distributor in Eastman, Georgia, claims that its expanded polystyrene insulation is rated at R-10.3 per inch — an impossible value. Its actual R-value is about R-3.8 per inch. Scammers continue to use exaggerated R …
Foil vs Bubble Foil or Foam Foil - GreenBuildingAdvisor
网页2017年11月15日 · You want real insulation -- insulation with an R-value. One option to consider is to include a layer of rigid foam in your assembly. If you go that route, you can choose to purchase foil-faced rigid foam -- either foil-faced EPS or foil-faced polyiso -- for the slight boost in R-value associated with the radiant barrier facing.
A New Look at Foil-Faced Bubble Wrap - GreenBuildingAdvisor
网页2021年4月30日 · According to a FiFoil web page, "This unique insulation has multiple layers that separate when installed to create three reflective air spaces, with R-values up to R-7.1 on 1.5” furring." This sentence clearly indicates that FiFoil is talking about an assembly R-value, not a material R-value -- raising questions about the legality of the R ...