Earthwool R7 Insulation Thickness: Approximately 330mm. Applications: Best suited for ceilings and areas where maximum thermal resistance is needed.
The R-Value of thermal insulation measures how resistant the insulation is to heat transfer. A higher R-value means a higher insulating rating. In other words, the higher the R-Value, the better the product is at insulating your home.
DuroSpan GPS R7. 5 is an excellent choice for insulating applications with low water absorption properties, and a compressive resistance of 10 psi.
Good Insulation: R-60, Batt or Blown Insulation. Better Insulation: R-70, Batt or Blown Insulation. Best Insulation: R-80, Batt or Blown Insulation.
The recommended R-value for attic insulation can vary depending on the climate zone in which you live. The U.S. Department of Energy recommends attic insulation levels of R-49 to R-60 for most homes in colder climates, and R-30 to R-49 for homes in warmer climates.
The thinnest insulation material currently available on the market is the 10mm Aerogel blanket. Its manufacturing technology is highly interesting, and its appearance resembles frozen smoke. For some, aerogel is synonymous with time frozen and suspended in space.
The optimal R-value for most homes is 30, but you can go as high as 38 if you live in a tropical climate. Anything higher than 38 indicates an over-insulated space. While you might think that too much insulation can't be bad, there are some significant consequences to consider.
For standard 2x4 walls, which are common in older homes, an R-value of R-15 is considered good, while R-21 is excellent. This can be achieved with high-performance fiberglass batts, dense-packed cellulose, or a combination of cavity insulation and continuous insulation.
Given a benchmark thickness of 3.5 inches, a batt of Rockwool achieves an R-15 insulation value while fiberglass achieves an R-13 value, giving Rockwool about 15% better insulating ability over fiberglass at the same thickness.
Foam Board or Rigid Foam
They provide good thermal resistance (up to 2 times greater than most other insulating materials of the same thickness), and reduce heat conduction through structural elements, like wood and steel studs.
It is possible to over-insulate your house so much that it can't breathe. The whole point of home insulation is to tightly seal your home's interior. But if it becomes too tightly sealed with too many layers of insulation, moisture can get trapped inside those layers. That's when mold starts to grow.
Vacuum insulated panels have the highest R-value, approximately R-45 (in U.S. units) per inch; aerogel has the next highest R-value (about R-10 to R-30 per inch), followed by polyurethane (PUR) and phenolic foam insulations with R-7 per inch.
R15 insulation offers slightly better thermal insulative properties than R13. Some of its formats are a fraction of an inch thicker than R13, making it more effective at helping with energy efficiency. However, the difference is minimal. R15 is slightly thicker than R13 for spray foam and blown-in cellulose.
If you want to take it up a level: Go with a 1-3/8″ thick polyurethane insulated door with an R-Value in the 12-12.9 range. This will roughly match the R-Value of your external walls and provide an even tougher door without going overboard on price.
You can use faced or unfaced batting when installing between the roof rafters of finished attic spaces. When using paper or plastic batting insulation, that moisture barrier should face outward toward the attic space. Even if the attic space is unheated, it's typically warmer than the outside air in winter.
Use R-13 or R-15 kraft-faced fiberglass or mineral wool insulation rolls for 2x4 stud walls. Wall assemblies, especially those in older homes, are built with two-by-four (2x4) studs. The wall thickness will be 3-1/2 inches, not 4 inches. The width of modern 2x4s is 3-1/2 inches.
Rockwool is not as serious a threat as asbestos, but it is still unhealthy. Rockwool has a high pH and nutrient solutions must be adjusted to accommodate for that factor. It is also susceptible to pH shifts which creates the need to continuously monitor the ph Levels of your system.
Installing a vapour barrier is optional when utilising ROCKWOOL solutions, as stone wool insulation is water repellent. However, adding a vapour barrier can help to prevent additional moisture coming through the ceiling space.
Robust – our solutions keep their shape, don't sag over the lifetime of a building and are resistant to rot and mould, providing high thermal performance for life4/5. Recyclable – ROCKWOOL insulation can be recycled to create new products, reducing our production carbon footprint by 10 percent6.
The installed insulation R-value for 2x6 fiberglass batt ranges between R-19 and R-21. When blown or sprayed cellulose insulation is used, the R-value is typically R-20 for 2x6 walls.
High R-value: Because foam board insulation has a greater R-value than standard fiberglass/batt insulation, it is more effective at insulating and decreasing heat loss.
At the end of the day its a no brainer. The higher the R-value, the better the thermal performance of the insulation. To increase your R-Value simply apply an extra layer of insulation over your initial layer.
The thermal barrier of a home should consist of a continuous layer of insulation on all sides—including the lowest floor, the exterior walls, and the ceiling or roof. Doubling the thickness of insulation will double the insulation's R-value, cutting heat loss in half.
An over-insulated house is susceptible to mold since it is so tightly sealed that it prevents moisture from escaping. It also prevents air from entering, circulating, and exiting, which can significantly reduce indoor air quality.
Moreover, R10 insulation is versatile and suitable for various applications, including walls, roofs, and floors. However, the higher cost of R10 insulation can be a drawback for some projects, particularly those with tight budgets.