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As long as it is kept safe from pests and properly installed, blown-in attic insulation can last a long time – 25-30 years. Cellulose can last even longer.
It’s less about how often than it is why should it be replaced. If you see signs of pest droppings in insulation, you should get it replaced immediately. If you get moisture in your attic, you should check often for mold or mildew. If you have inadequate insulation you should add/replace to achieve the recommended R-Value.
The cost of insulation depends on a few things. Mostly, what kind of insulation are you using, how large is the area, and what company is doing the install. It’s important to use a reputable company that is properly insured for this job, so keep that in mind when comparing estimates.
Some insulation comes treated with natural borates that will help control many pests like cockroaches, silverfish, centipedes, and more.
A properly insulated home keeps your home cooler in the summer and warmer in the winter. No matter what the weather is outside, a properly insulated home keeps the outside weather from getting in, keeping the temperature in your home more consistent. Keeping your heating and cooling systems from having to shut on and off so much puts less strain on them. That equals energy bill savings!
It depends. If you’re noticing your home is very drafty or exceptionally noisy, it may be time to update that insulation. If you’re seeing urine stains or pest droppings, those can create animal-caused bacterial and fungal pathogens and their urine can cause mold. All of that can become airborne, eventually traveling into the main living areas of your home making you and your family sick. Don’t miss out on the state rebates on insulation before replacing! Do your homework.
There’s no one answer. The best insulation is the right one for your home and your situation. It depends on where you’re insulating (crawlspace, attic, etc.), where you live (humid summers? cold winters?), and what you’re trying to achieve (pest control? noise reduction?). Just make sure you choose one with a proper R-value so you know it works.
Insulation ratings are measured in R-values per inch of thickness. An R-value tells you how well a type of insulation can keep heat from leaving or entering your home. Insulation R-values vary based on the type, thickness, and density of the insulation material. Typically, a higher insulation R rating means better climate control and better energy efficiency for your home. A higher insulation R-value usually means a higher price point as well.
The amount of insulation recommended for your home will vary depending on a number of factors. For example, different climates require different insulation R-values. You will need a higher R-value of insulation if you live in New England. Also, if your home is more than 10 years old, you likely need more insulation. It’s best to bring in a professional to inspect and assess. You don’t want to head up there only to find a bat in your attic.
There are four basic types of insulation: Rigid foam, batts and rolls, cellulose, and polyurethane (or “foam-in-place”). They are used for different applications and areas of the home. Some help control moisture in my crawlspace, some will help with sound-proofing my home, and some will last longer than others. No matter which one you choose, make sure you have a professional do the installation. Insulation DIY thought: don’t do it.
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