Coastline Insulation is an essential investment in the comfort and energy efficiency of your home. It buffers your temperature-controlled living spaces from outside temperatures, reducing cooling costs in summer and heating costs in winter. Proper insulation also reduces sound transmission between rooms, and can boost your resale value. However, a number of factors impact the R-value required for your specific situation and climate zone.

The size of your home and existing insulation in the walls and attic are key variables. In most cases, a thorough inspection by a certified attic specialist will provide the accurate R-value recommendation needed to optimize energy performance and comfort.

Attic Insulation R-Value Guide for Different Climates

Different insulation materials offer varying R-values per inch of thickness. Fiberglass batts and blown-in fiberglass are affordable options that typically achieve R-values of 2.2-2.7 per inch. Spray foam insulation is more expensive upfront but offers superior air-sealing and R-value per square inch — as well as potential long-term energy savings.

In general, higher R-values provide greater resistance to heat flow. However, higher R-values may be ineffective beyond a certain point, so it’s important to consult with a professional to ensure that you’re getting the optimal level of energy efficiency for your specific situation. Additionally, many forms of insulation can lose R-value over time due to moisture accumulation and deterioration. This makes it even more critical to properly install insulation and conduct periodic inspections to maintain optimal performance.

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