Almost every homeowner in Northeast Pennsylvania will have to remove attic insulation at some point. Depending on the age and style of your home and the type of insulation currently in it, the task can be messy and even dangerous.
For example, we often get calls about removing asbestos and moldy insulation that has sat in people’s attics for decades, which they are often not even aware of until they go to sell or get a home inspection.
While most insulation is rated to last for more than thirty years, rodents, water leaks, and poor ventilation can quickly cause deterioration and mold.
By far, attic insulation is one of the most efficient ways to reduce your energy bills and brave the brutal winters in the Northeast.
If you are curious about removing and replacing your old attic insulation, here is everything you need to know.
Assessing the Need for Replacement
First, we recommend hiring a professional contractor to inspect your existing insulation and determine whether it should be replaced or can even be added to for greater performance. Some signs that your attic insulation needs to be replaced include:
- Visible water damage or mold that is deteriorating the insulation and making it hazardous.
- Chew marks or shredding from pests like rodents that have damaged the insulation.
- Uneven temperature distribution and drafts, especially in upper-level rooms close to the attic.
- Sudden spikes in energy bills with no apparent explanation or cause.
- Insulation that is well over 20-25 years old and has noticeably declined in usefulness over the years.
In some cases, it may be worth it to replace older insulation, such as blown-in insulation, that has settled and lost much of its effectiveness if you can upgrade to better insulation with lower energy costs.
Choosing the Right Type of Insulation
A huge aspect of replacing old insulation is selecting new insulation to take its place. While fiberglass batts and rolls offer easier installation and lower costs, a higher quality material, like closed-cell spray foam, will guarantee lower energy costs and lasts longer than traditional materials.
Remember that blown-in and spray foam insulation require installation by contractors, which will increase your costs but save you money in the long term.
Should You Get a Professional Contractor to Replace Your Attic Insulation?
For many handy homeowners, insulating their attics may seem like a simple project. However, we caution them against installing their own insulation for several reasons.
First, proper installation is key to performance and longevity. For example, improperly installed blown-in insulation will settle faster, compromising its performance and causing it to deteriorate quickly.
Furthermore, attic insulation requires proper ventilation to prevent moisture-related issues, such as rotting and mold. Extra precautions must also be taken to prevent fires when installing insulation around light fixtures.
On the other hand, removing old insulation can be hazardous, especially without the right materials. A qualified contractor will ensure that any attic insulation replacement project is performed correctly and save you the time and labor of disposing of your old insulation.
Steps for Removing Attic Insulation Yourself
Removing attic insulation yourself can be laborious, expensive, and hazardous. Here are some tips to protect yourself and make the process easier.
1. Gather the Right Equipment
Safety is everything when it comes to handling old insulation. Be prepared by purchasing the right personal protective equipment (PPE), such as:
- Safety gloves
- Goggles
- Dust mask
- Long-sleeve clothing
These items will help protect you from dust, allergens, and potential contaminants.
2. Test for Asbestos
If your home was built before 1980, consult a professional to test for asbestos before proceeding. Asbestos removal is highly hazardous and requires specialized handling, so we recommend hiring a professional contractor.
3. Clear and Prepare the Attic
Make the process smoother by removing any stored items, clutter, and debris from your attic. Lay down plastic sheeting to collect debris and make cleanup easier. Inspect the space for hazards like exposed wiring or active pests, addressing these issues before moving forward.
4. Remove the Insulation
Once the area is properly prepared, the old insulation must be removed.
- For loose-fill insulation, use a vacuum with a HEPA filter to remove material without releasing particles into the air. Work in small sections for thorough removal.
- For batts or rolls, carefully lift and roll them up, placing the material directly into heavy-duty trash bags.
5. Dispose of Waste Properly
You will have to check with local regulations for disposing of insulation materials. Seal filled trash bags tightly to prevent debris from escaping during transport.
Considerations for Installing Attic New Insulation
Once the old insulation has been removed, it’s time to decide on the right insulating material for your attic. The choice will depend on your budget, goals, and whether or not you will be using a professional.
Spray Foam Insulation
Spray foam insulation is by far the most efficient insulating material regarding thermal resistance. However, it does require a professional contractor to ensure proper installation. Shop around for quotes and ensure your attic is properly ventilated to prevent moisture-related issues from new insulation.
Fiberglass Insulation
Fiberglass is available in batts and rolls that are labeled by their R-value, giving you an estimate of how much you’ll need to properly insulate your NEPA attic. If you choose to install batts yourself, be sure to lay them between attic joists, ensuring a snug fit without compressing the material.
For added insulation, layer additional batts perpendicular to the first layer. If the batts come with vapor barriers, staple them to the joists.
Blown-In Insulation
Blown-in fiberglass or cellulose insulation usually requires a contractor, although blower machines are available at local hardware stores. However, proper installation is key to prevent premature settling and to ensure that insulation is installed properly between joists for maximum thermal resistance.
Rigid Foam Boards
Rigid foam boards can be attached between joists using caulk to provide an extra layer of thermal support. However, we recommend sealing any edges with a spray foam to prevent any heat loss or transfer.
Checking Your Work
After installation, inspect the insulation to ensure it’s evenly distributed and meets the recommended R-value for your area. It may take some time to notice any irregularities that may indicate poor installation.
However, getting a second opinion from a qualified contractor like EnergySmart never hurts.
For all attic insulation projects, including removal and installation, contact EnergySmart for a free quote to help determine your home’s best path.
FAQs
How often should attic insulation be replaced?
Attic insulation typically lasts 20-30 years but can vary based on material type and environmental factors. Replace insulation if you notice signs of wear, water damage, or pest infestations.
What is the best type of insulation for attics?
The best type depends on your specific needs. Fiberglass batts are budget-friendly and easy to install, blown-in insulation fills irregular spaces, and spray foam offers superior air sealing.
Can I install new insulation over old insulation?
In some cases, yes. However, if the old insulation is damp, moldy, or pest-infested, it must be removed before installing new insulation.
