Insulation to Use For 2x4 walls, use R-13 or R-15 insulation.
Excellent Thermal Performance Owens Corning™ R-15 EcoTouch® insulation is specifically engineered to solve the efficiency problems of exterior 2x4 walls. “High density” means more fibers per square inch. It delivers a higher R-value per square inch in less space than standard insulation products.
Fiberglass and rock wool batts—2x4 walls can hold R-13 or R-15 batts; 2x6 walls can have R-19 or R-21 products. Generally, batt insulation is the least expensive wall insulation material but requires careful installation for effective performance (see page 4).
The general recommendation is a minimum R13 in a 2x4 wall. If you're going to go with batts I would recommend looking into mineral wool instead of fiberglass. It provides a lot of benefits including a higher R-value per inch.
R-Value and Exterior Walls
According to the U.S. Department of Energy, R-values for exterior walls in colder climates should be at least R-13 to R-23. In milder climates, a lower R-value may be sufficient. For example, in a moderate climate, an R-value of R-13 to R-15 is typically recommended.
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.
You can use both in similar places and climates. R15 insulation offers slightly more thermal resistance than R13 insulation, but it also costs more. Ultimately, it's difficult to justify paying a significantly higher price for R15 when R13's insulative properties are only slightly lower than R15.
Usually, these studs are around 75mm to 100mm thick, which means that you could potentially introduce 100mm thick wall insulation to help to prevent heat from escaping through your walls.
While 2×6 walls are more structurally sound, they are rarely needed. 2×4 construction is strong and structurally sound, especially when working with a custom home builder that uses premium materials.
R19 insulation typically costs more than R15 because of its superior performance.
Johns Manville R20 Fibreglass Insulation Batts - Sound Barrier - 63.3-sq. ft. - 5.5-in Thick for 2 x 4 Walls.
Faced insulation is better at preventing moisture damage; however, it can't be layered like unfaced insulation. For this reason, unfaced insulation is better for keeping your house warm in the winter. It also offers better sound protection.
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.
Exterior Garage Walls
Typically these will be constructed from standard 2-by-4 studs which will define the amount of insulation that you can have installed. You should be targeting an R-Value of R-13 or R-15 in these areas to properly maximize your insulation in this application.
2 x 4 framing is generally code compliant. Here at Medeek Design we typically only specify 2 x 4 studs @ 16" o.c. spacing, for small sheds and garages with a building widths less than 16 feet. All other larger structures are generally called out with 2 x 6 exterior studs @ 16" o.c. unless specified otherwise.
It's common knowledge that 2x6 exterior walls are more expensive to build than 2x4 walls but provide a larger cavity for insulation.
Insulation to Use
For 2x4 walls, use R-13 or R-15 insulation. For 2x6 walls, use R-19 or R-21 insulation.
Stapling on the inside of studs is preferred by many drywallers because it leaves the edges of the framing members easier to locate. However, your local building codes may require you to overlap the flanges and staple them to the edges of the framing members.
Metal battons are then affixed to the inside of any external solid walls to accommodate insulation board. A suitable air gap (approx. 1″) is left between the insulation material and the exterior walls to allow the walls to 'breathe' and to ensure damp or condensation does not build up on the inside of the property.
What are the disadvantages of R15 V3? The disadvantages of R15 V3 can include its limited storage space, aggressive riding posture, and relatively high maintenance costs compared to other motorcycles in its segment.
Yamaha YZF R-15 is one of the most affordable and popular sportbike in the Indian market. The hardware on offer is also quite good. Suspension duties are performed by USD forks in the front and a monoshock at the rear. The engine is a liquid-cooled unit that pumps out 18.14 bhp and 14.2 Nm.
R19 Insulation offers superior thermal insulation compared to R13. With a typical thickness of 6.25 inches, R19 fiberglass is designed for use in 2x6 wall cavities, making them suitable for colder climates where higher thermal resistance is necessary.