Best Soundproofing Insulation Materials To Quiet Any Space

Finding ways to reduce noise in your home, office, or other spaces can greatly improve your quality of life. Excessive noise from neighbors, street traffic, machinery, and other sources can cause constant irritation, make it hard to relax or focus, and generally create an unpleasant environment.

Adding soundproofing insulation is an affordable and effective method to dramatically cut down on noise. Soundproofing creates a quieter space for sleeping, working, hobbies, and more. It allows for privacy in shared living situations. Musicians can soundproof their practice spaces to avoid disturbing others. Commercial spaces like offices, restaurants, and factories can provide a peaceful atmosphere by insulating against noise.

How Insulation Provides Soundproofing

Specialized insulation designed for soundproofing works by absorbing and blocking sound vibrations rather than transmitting them. This prevents noise from transferring through walls, ceilings, floors, and other surfaces. Soundproofing insulation also seals up gaps and openings where excess noise can leak through.

Compared to structural renovations or major construction projects, installing soundproofing insulation is one of the most affordable and accessible ways to reduce noise disturbances. The materials are relatively inexpensive and they can be added to existing walls and ceilings during remodeling or DIY projects.

Best Soundproofing Insulation Materials

Fiberglass

Fiberglass insulation contains dense packed glass fibers which are very effective at blocking sound transmission. Rather than passing along sound vibrations, the disorganized glass fibers absorb and dissipate the energy. This prevents noises from transferring from room to room.

Fiberglass insulation rated at least R-13 is recommended for interior walls, ceilings, and crawl spaces for noise control. It can be purchased in batts or rolls and installed to fit between studs and joists. Fiberglass is an excellent insulator against airborne noises like voices, music, or traffic.

Blown-In Cellulose

Cellulose insulation is made from recycled materials like newspaper, cardboard, or other paper sources. It contains fluffy fibers that dampen and absorb vibrations very effectively. When blown into cavities, cellulose completely fills cracks, gaps, and spaces that would otherwise let sound through.

Cellulose is often used to insulate exterior walls, attics, floors, and small crevices that are difficult to reach. It provides impressive noise blocking and absorption considering its low cost. Overall, blown-in cellulose is an excellent budget option for DIY soundproofing projects.

Mineral Wool

Mineral wool insulation is made from natural materials like basalt rock, steel slag, or glass. It contains dense fiber textures that interrupt sound waves, preventing noise transmission. Mineral wool rates highly for noise absorption and barriers.

In addition to soundproofing abilities, mineral wool offers fire-resistant properties. However, it does tend to be more expensive than fiberglass or cellulose options. Mineral wool works well installed in interior walls, attics, HVAC ducts, and other areas.

Spray Foam Insulation

Spray foam insulation is a polyurethane-based foam that is sprayed into cracks, cavities, and openings. It quickly expands to fill the space fully. The airtight seal created by spray foam completely blocks noise transfer and gaps where sound leaks through.

In new construction or major renovations, spray foam is useful for insulating exterior walls and hard-to-reach places. It requires professional installation but offers custom fitting and highly effective noise blocking abilities.

Foam Board Insulation

Foam board insulation panels made of rigid polystyrene foam can also dampen sound when installed on walls and ceilings. Though not as dense as mineral wool or cellulose, foam boards create an extra layer that interrupts noise vibrations.

Foam insulation boards are easy for DIYers to cut to size and attach to surfaces with adhesive. They are commonly combined with other insulation materials for enhanced soundproofing. Foam boards work especially well when installed on interior walls between bedrooms or living spaces.

Tips for DIY Soundproofing with Insulation

With the right planning and materials, you can take on DIY soundproofing projects using insulation. Here are some tips for successfully insulating walls, ceilings, or floors to reduce noise:

• Calculate the square footage of your project area to determine how much insulation you need.
• Prepare the workspace by moving furniture or removing existing wall materials.
• Wear proper protective gear like masks, gloves, goggles, etc. when handling insulation.
• Seal any cracks or gaps before installing insulation materials.
• If possible, use sound isolation clips or channels to "float" drywall away from studs/joists.
• Carefully install insulation based on manufacturer guidelines for the specific material.
• Test noise levels when complete and add additional insulation if needed.

When To Hire A Professional

While DIY soundproofing is certainly achievable, some circumstances call for bringing in an experienced contractor. Professional help is recommended for:

• Larger commercial spaces like offices, theaters, or restaurants.
• Major home renovations involving reconfiguring walls and rooms.
• Attic insulation projects that require blown-in materials to fill space.
• Converting spaces into specialized sound studios or recording booths.
• Identifying all gaps in need of sealing for maximum noise reduction.
• Proper installation of sound isolation clips, channels, or other building modifications.
• Very large, complex projects potentially beyond a DIY skill level.

Qualified contractors have the expertise to properly advise on required insulation amounts, specialized products, and installation methods tailored to your specific noise issues and budget.

How Much Does Soundproofing Insulation Cost?

The cost of soundproofing insulation will depend on a few factors:

• Type of insulation material chosen
• Square footage of space needing insulation
• Whether you DIY or hire a contractor
• Labor rates for installation in your area

As a general guideline for materials per square foot installed:

• Fiberglass batts: $1.50-$2.50
• Blown-in cellulose: $1-$1.50
• Mineral wool: $1.75-$2.75
• Spray foam: $3-$6
• Foam boards: $1-$1.50

Many contractors charge hourly rates of $40-$70 per hour or fixed pricing per project. Total costs for a standard 12'x12' bedroom with one exterior wall could range from $400-$1000 or more depending on products used and labor.

Other Soundproofing Tips To Reduce Noise

While insulation should be central to any soundproofing project, additional techniques can also help block unwanted noises:

• Weatherstrip doors, windows, electrical outlets and other openings.
• Install mass loaded vinyl barriers on exterior facing walls.
• Seal HVAC vents with acoustic duct sealant.
• Float interior walls away from structural studs if possible.

Combining insulation with proper air sealing, sound damping compounds, and decoupled wall builds creates the most effective noise barrier.

FAQs About Soundproofing With Insulation

What are the best insulation materials for soundproofing?

The top soundproofing insulation materials are fiberglass, blown-in cellulose, and mineral wool. All provide excellent noise blocking and absorption.

Should I use insulation for an existing wall or build a new one?

Adding insulation to an existing wall is the most affordable option. However, decoupling the drywall from studs or building a double wall system provides maximum soundproofing.

How much insulation is needed for soundproofing?

Aim for an insulation value of R-13 or greater. The more insulation, the better for reducing noise until about R-19. For existing walls, add Roxul Safe'n'Sound insulation.

Can I do soundproofing insulation myself or do I need a pro?

DIY soundproofing is definitely achievable in most cases. But for large, complex projects consider hiring an insulation contractor.

Focus first on exterior-facing walls, then do ceilings below noisy upstairs rooms. Insulate floors last unless they are a major noise source.

Adding soundproofing insulation to your rooms is an effective way to reduce unwanted noise disturbances. With the right materials and proper installation, you can create the peaceful environment you want. Carefully insulating walls, ceilings, attics, and floors blocks sound and absorbs vibrations so noises no longer transfer from room to room or penetrate from outside your home.