Even if you don’t think you can get your utility bills any lower, insulating your attic can help prevent a slew of major issues. From keeping your home warmer to addressing dampness and mold growth, new insulation offers multiple types of protection. A good insulation strategy ensures your home stays energy-efficient year-round.

Learn whether you need this important home maintenance project and how best to prepare for it.

How to Determine Your Attic Insulation Needs

Before you begin your insulation installation project, an energy-efficiency audit or inspection, which evaluates how heat loss occurs, will help you determine your specific needs. There are different ways to conduct these audits.

DIY Energy-Efficiency Audits

You can conduct a minimal audit of your attic on your own. This involves performing a visual inspection that will tell you what types of insulation your attic needs for maximum efficiency. Look for weatherstripping around the edges of the access door’s frame, and check for caulking around windows, pipes, and vents.

When looking at the existing insulation, feel for dampness on the underside. Discoloration could indicate long-term moisture damage and mold growth. Replace any worn, moldy, or loose insulation immediately to ensure your attic remains properly insulated. Knowing how to insulate an attic correctly can help you prevent further issues down the road.

Professional Energy-Efficiency Audits

It’s generally best to schedule a professional energy audit for your attic. In addition to a visual scan, the experienced team at Attic Projects will use infrared cameras, blower door tests, highly sensitive thermometers, and other high-tech equipment to pinpoint the location of air leaks and heat loss.

The Best Time to Start Your Insulation Installation

Timing is everything when it comes to installing new attic insulation to better insulate your home. If you complete the project before the temperatures cool, you’ll enjoy enhanced heat retention throughout the colder months. However, installing insulation is demanding work, making the summer season a poor time to tackle the project.

Ideally, you’ll want to schedule the installation for the temperate period between the last weeks of summer and the first weeks of fall. Your installers can work safely during this period and complete the project before the temperature gets too cold.

Choose Between Batt and Roll or Blown-In Insulation

When insulating attics, it’s important to choose the right method. In most cases, batt and roll insulation is the better choice. However, some homeowners prefer blown-in insulation. Consider the following pros and cons to determine which type of attic insulation you need to install:

Batt and Roll Insulation

The main reason homeowners often choose batt and roll insulation is that it’s the most cost-friendly option. However, there are other advantages, as well, along with certain disadvantages.

Pros:

  • Easier to determine R-value
  • Replacement is less labor-intensive
  • It’s possible to add multiple layers

Some homeowners turn away from batt and roll insulation when they discover the disadvantages. Understanding the possible drawbacks can help you make a more informed choice.

Cons:

  • Hard to carry heavy rolls of insulation
  • Difficult to cover gaps around pipes and vents
  • Consistent physical contact can cause skin irritation

While there are precautions to help address these issues, it might be easier to avoid this type of insulation altogether.

Blown-In Insulation

If you’d prefer to work with a less problematic type of insulation, consider blown-in insulation, which offers numerous benefits with relatively few disadvantages.

Pros:

  • Quicker installation process
  • Fills every area of the attic
  • Completely covers difficult areas

While installing blown-in insulation is generally easier, you might find other aspects less desirable.

Cons:

  • Added cost of blower machine rental
  • Determining the depth and R-value is more complicated
  • Loose insulation compacts and loses R-value over time

Blown-in insulation tends to be best for protecting tight spaces. You can also use it to top off batt and roll insulation for added protection, making this a good combination for thorough insulation.

The Best Way to Install Attic Insulation

When you choose batt and roll insulation, your installer will develop a plan for the installation process. A sound strategy will prevent delays and ensure top-quality results.

Dress for Success

Your installer must wear the proper clothes and equipment for adequate protection, including durable clothing with long sleeves. Eye protection and high-quality work boots are also essential.

Anyone working near the insulation must wear an N95 (or better) face mask to repel dust and small particles. Installers should use flashlights and work lights. Set two planks of plywood outside to serve as work surfaces.

Seal Air Leaks

The installer will begin by sealing air leaks around window frames, pipes, vents, and the chimney. They can detect air leaks by running their hands along the framing of these features and feeling for temperature changes. They’ll use a caulk gun to seal small gaps. Expanding foam can fill openings wider than three inches.

Modify Heat-Generating Lights

Heat-generating lighting fixtures shouldn’t touch insulation, as this creates an increased risk of fire. Replace these lights with IC-rated (insulation-contact approved) recessed lights or build dams or baffles around the lights to prevent contact with the insulation.

Install Vent Chutes in Attic Walls

Installing vents in your attic will provide sufficient ventilation to keep it from getting too hot. Your installer will staple foam vent chutes around each vent to keep them protected yet open. You should have a vent and chute between each two rafters at the peak where the joists and rafters meet.

Precisely Cut the Batt or Roll Insulation

Your installer will need a tape measure to get precise measurements of the distance between each pair of rafters. If the width matches the width of your batt and roll insulation (usually 15”–16”), the insulation won’t require trimming.

If it’s necessary to cut the insulation, your installer will take it outside, set it on a piece of plywood, and cut it lengthwise — this often involves using a 2×4 to ensure a straight cut. Once they’ve done that, they’ll staple each piece of insulation in place at eight-inch intervals.

Know How to Position the Face Side

When installing attic insulation, most people assume that the paper side or face should show inward. However, this isn’t always the case.

The face side should remain visible and face inward if you primarily heat your home through most of the year. If you live in a warmer climate where you rely on your air conditioner through the majority of the year, the face side should face outward instead.

Rely on Professional Installers for Better Results

Attic Projects provides a wide range of home maintenance services, including professional insulation installation. If you lack the time, resources, or skills to install attic insulation on your own, you can count on our team to get the job done right. Schedule a free attic inspection today to get started.