Measuring Depth of Attic Insulation
The Foam Guy in most attics will reveal the tried-and-true materials that are typically used to insulate homes — fiberglass batt insulation, cellulose, mineral wool and spray foam. Each type has its advantages, but they all work essentially the same way. The key to effective insulation is to get the right R-value based on your climate zone, proper installation and air sealing.
The easiest way to assess your attic insulation is by measuring its depth. This can be done using a ruler or tape measure inserted into the insulation, but you’ll need to take measurements in multiple locations for an average. Be sure to wear a headlamp so you can see the areas you’re measuring, and don’t forget to bring a respirator mask to protect your lungs from attic dust particles.
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You’ll also need to determine what R-value your current insulation has – you’ll find this information on the product label or in the manufacturer’s specifications. Generally, fiberglass insulation has an R-value of 3 to 3.5 per inch. The next step is to subtract your current R-value from the recommended value for your climate zone. The result will indicate how much additional insulation you need to achieve the desired level.
In addition to ensuring that the insulation is in place, you should also check that it doesn’t block or clog your attic soffit vents – a common problem. This can be a tricky issue to resolve on your own, and you should consult with an insulation professional for more advice.
The Foam Guy
642 Moffitt Hill Rd, Old Fort NC 28762
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