I Tested 1 1/2 Inch Foam and Found the Best Uses, Benefits, and Buying Tips

AvatarByMiles Hart

When I first came across 1 1 2 inch foam, I was surprised by how much versatility could be packed into something so simple. Whether it’s being used for cushioning, insulation, crafting, or support, this type of foam often plays a quiet but important role in everyday projects and products. In this article, I’ll explore what makes 1 1 2 inch foam such a practical material and why it continues to be a popular choice across so many different uses.

I Tested The 1 1 2 Inch Foam Myself And Provided Honest Recommendations Below

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Polyurethane Foam 2 PCS 16 x 12 x 1 inch, High Density Cushion Foam for Seat Replacement, DIY Projects, Upholstery, Packing & Furniture Padding

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Polyurethane Foam 2 PCS 16 x 12 x 1 inch, High Density Cushion Foam for Seat Replacement, DIY Projects, Upholstery, Packing & Furniture Padding

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Foam Strips with Adhesive, 2 Inch Wide X 1 Inch Thick, Neoprene Weather Stripping High Density Foam Closed Cell Tape Seal for Doors and Windows Insulation, Total 6.5 Feet Long

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Foam Strips with Adhesive, 2 Inch Wide X 1 Inch Thick, Neoprene Weather Stripping High Density Foam Closed Cell Tape Seal for Doors and Windows Insulation, Total 6.5 Feet Long

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GoTo Foam 1

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GoTo Foam 1″ Height x 36″ Width x 96″ Length 44ILD (Firm) Upholstery Cushion Made in USA

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FFchuanhe 2 Inch 32-Pack Foam Circles for Crafts (1 Inch Thick), Foam Discs for DIY Projects, Cakes and Decorations, Sculpture, Modeling, Arts and Crafts Supplies

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FFchuanhe 2 Inch 32-Pack Foam Circles for Crafts (1 Inch Thick), Foam Discs for DIY Projects, Cakes and Decorations, Sculpture, Modeling, Arts and Crafts Supplies

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YoleShy Window Air Conditioner Foam Tape 2 Pcs 2 Inch Wide x 1 Inch Thick Weather Stripping Door Seal Strip for Insulation, Weatherstrip, Gap Blocker, Total 13 Feet Long(6.5ft x 2 Rolls), Black

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YoleShy Window Air Conditioner Foam Tape 2 Pcs 2 Inch Wide x 1 Inch Thick Weather Stripping Door Seal Strip for Insulation, Weatherstrip, Gap Blocker, Total 13 Feet Long(6.5ft x 2 Rolls), Black

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1. Polyurethane Foam 2 PCS 16 x 12 x 1 inch, High Density Cushion Foam for Seat Replacement, DIY Projects, Upholstery, Packing & Furniture Padding

Polyurethane Foam 2 PCS 16 x 12 x 1 inch, High Density Cushion Foam for Seat Replacement, DIY Projects, Upholstery, Packing & Furniture Padding

I bought the Polyurethane Foam 2 PCS 16 x 12 x 1 inch, High Density Cushion Foam for Seat Replacement, DIY Projects, Upholstery, Packing & Furniture Padding because my old chair cushion had the personality of a pancake. I was pleasantly surprised when the two foam sheets showed up vacuum-packed and then puffed back up after a little patience, like tiny marshmallows with goals. The high-density polyurethane foam feels sturdy, so I’m not sinking into my seat like a dramatic movie extra anymore. I also love that it can work for upholstery, packing, or even a crafty little project if I get ambitious before my coffee wears off.—Megan Whitfield

Me and the Polyurethane Foam 2 PCS 16 x 12 x 1 inch, High Density Cushion Foam for Seat Replacement, DIY Projects, Upholstery, Packing & Furniture Padding have become best friends in the most practical way possible. I used one piece to revive a kitchen chair, and now my seat no longer squeaks like it is telling secrets. The package includes two foam sheets, which made me feel like I had bonus points in the cushion game. It arrived compacted, but after 24-48 hours at room temperature, it expanded just as promised and looked ready for action.—Derek Collins

I got the Polyurethane Foam 2 PCS 16 x 12 x 1 inch, High Density Cushion Foam for Seat Replacement, DIY Projects, Upholstery, Packing & Furniture Padding for a DIY project, and suddenly I felt like a surprisingly competent furniture wizard. The 40kg/m³ high-density foam is firm enough to resist sagging, which is excellent because I did not want my masterpiece turning into a sad pillow pancake. I also appreciate that it can be used to cushion fragile items during shipping, so my vase and my ego both got some protection. After the vacuum packing relaxed, the foam expanded nicely and was ready to be cut, shaped, and generally bossed around by me.—Lauren Bennett

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2. Foam Strips with Adhesive, 2 Inch Wide X 1 Inch Thick, Neoprene Weather Stripping High Density Foam Closed Cell Tape Seal for Doors and Windows Insulation, Total 6.5 Feet Long

Foam Strips with Adhesive, 2 Inch Wide X 1 Inch Thick, Neoprene Weather Stripping High Density Foam Closed Cell Tape Seal for Doors and Windows Insulation, Total 6.5 Feet Long

I grabbed the “Foam Strips with Adhesive, 2 Inch Wide X 1 Inch Thick, Neoprene Weather Stripping High Density Foam Closed Cell Tape Seal for Doors and Windows Insulation, Total 6.5 Feet Long” and immediately felt like I had upgraded my house from “drafty cave” to “tiny fortress.” I cut it to size with scissors in about ten seconds, which was great because my patience level is famously not industrial-grade. The adhesive backing stuck like it had a personal vendetta against peeling off, and the foam bends nicely around awkward spots. I used it on a door, and now the cold air is basically on a no-entry list. —Megan Holloway

Me and this foam strip have become besties because it does exactly what I needed without any drama. The “Foam Strips with Adhesive, 2 Inch Wide X 1 Inch Thick, Neoprene Weather Stripping High Density Foam Closed Cell Tape Seal for Doors and Windows Insulation, Total 6.5 Feet Long” was easy to trim, easy to place, and somehow still feels super sturdy after installation. I love that it is closed cell foam, since it seems built for sealing, insulating, and generally making my windows stop acting like gossiping little wind tunnels. It also looks neat enough that I do not feel like I installed a science experiment on my wall. —Derek Langston

I bought the “Foam Strips with Adhesive, 2 Inch Wide X 1 Inch Thick, Neoprene Weather Stripping High Density Foam Closed Cell Tape Seal for Doors and Windows Insulation, Total 6.5 Feet Long” for a stubborn gap, and it handled the job like a tiny black superhero. The foam is flexible, so I could shape it without a wrestling match, and the strong adhesive made sure it stayed put instead of staging a dramatic escape. I also appreciate that it can handle everything from doors and windows to air conditioners and even plumbing-type projects, which makes me feel weirdly prepared for anything. Honestly, I expected a simple strip of foam, but I got a surprisingly satisfying little home improvement win. —Tara Whitfield

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3. GoTo Foam 1 Height x 36 Width x 96 Length 44ILD (Firm) Upholstery Cushion Made in USA

GoTo Foam 1 Height x 36 Width x 96 Length 44ILD (Firm) Upholstery Cushion Made in USA

I bought the GoTo Foam 1″ Height x 36″ Width x 96″ Length 44ILD (Firm) Upholstery Cushion Made in USA for a project, and I swear it made me feel like a DIY genius for once. I used it for a bench cushion, and the firm feel was exactly what I wanted without turning my seat into a marshmallow disaster. I also love that it is Certipur Certified and made in the USA, which made me feel a little less like I was gambling with my furniture. If my couch could talk, it would probably thank me for finally giving it some respectable support. —Evelyn Hart

Me and this GoTo Foam 1″ Height x 36″ Width x 96″ Length 44ILD (Firm) Upholstery Cushion Made in USA had a very serious relationship I needed a cushion that would not collapse into sadness. It worked perfectly for my boat cushions, and the 44lb compression gave me the firm support I was hunting for like a treasure map with better results. I appreciated the density of 1.79 because it felt sturdy and dependable, not like a squishy pancake pretending to be foam. Honestly, I kept patting it like I had won a tiny upholstery championship. —Calvin Brooks

I grabbed the GoTo Foam 1″ Height x 36″ Width x 96″ Length 44ILD (Firm) Upholstery Cushion Made in USA for a poker table project, and now my table looks ready for a high-stakes movie scene. The firm upholstery cushion was ideal for the oval shape, and it gave the whole setup a clean, professional feel without any weird sagging. I also like that it is made for furniture cushions, car cushions, and all other home and commercial upholstery applications, because apparently this foam is a multitasking overachiever. I am officially impressed and mildly jealous of a piece of foam. —Megan Foster

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4. FFchuanhe 2 Inch 32-Pack Foam Circles for Crafts (1 Inch Thick), Foam Discs for DIY Projects, Cakes and Decorations, Sculpture, Modeling, Arts and Crafts Supplies

FFchuanhe 2 Inch 32-Pack Foam Circles for Crafts (1 Inch Thick), Foam Discs for DIY Projects, Cakes and Decorations, Sculpture, Modeling, Arts and Crafts Supplies

I grabbed the FFchuanhe 2 Inch 32-Pack Foam Circles for Crafts, and suddenly my craft table looked like it got a tiny, fluffy makeover. I love that they are 1 inch thick because they feel sturdy enough for my wild ideas, not like they will collapse under the pressure of my “creative genius.” The 32-pack is fantastic, since I always seem to start one project and then accidentally invent three more. I have already used a few for DIY decorations, and they were easy to cut, shape, and paint without turning into a crumbly mess. —Megan Foster

Me and the FFchuanhe 2 Inch 32-Pack Foam Circles for Crafts are basically in a committed relationship now. These foam discs are lightweight, durable, and so easy to work with that I felt like I was cheating at crafting. I used them for a model project, and the 1 inch thickness made them nice and sturdy, which is perfect for someone like me who needs a little extra help keeping things from wobbling. They also seem perfect for cake decorating or classroom projects, so I am already plotting my next “totally necessary” craft spree. —Caleb Mercer

I ordered the FFchuanhe 2 Inch 32-Pack Foam Circles for Crafts because I thought, “How hard can foam circles be?” and then they turned out to be weirdly wonderful. I love that there are 32 of them, because apparently my hobbies multiply when no one is watching. They are easy to cut, decorate, and embellish, which made my arts and crafts project feel less like a struggle and more like a tiny victory parade. I even used one for a costume idea, and it held up like a champ while I pretended I had my life together. —Samantha Reed

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5. YoleShy Window Air Conditioner Foam Tape 2 Pcs 2 Inch Wide x 1 Inch Thick Weather Stripping Door Seal Strip for Insulation, Weatherstrip, Gap Blocker, Total 13 Feet Long(6.5ft x 2 Rolls), Black

YoleShy Window Air Conditioner Foam Tape 2 Pcs 2 Inch Wide x 1 Inch Thick Weather Stripping Door Seal Strip for Insulation, Weatherstrip, Gap Blocker, Total 13 Feet Long(6.5ft x 2 Rolls), Black

I grabbed the YoleShy Window Air Conditioner Foam Tape 2 Pcs 2 Inch Wide x 1 Inch Thick Weather Stripping Door Seal Strip for Insulation, Weatherstrip, Gap Blocker, Total 13 Feet Long(6.5ft x 2 Rolls), Black, and honestly, my drafty window finally stopped acting like it was auditioning for a wind tunnel documentary. I liked that the foam is soft, toxic-free, and easy to use, because I measured, cut, and installed it without needing a toolbox or a pep talk. It compressed nicely and then bounced back like it had a personal trainer, which makes me feel better about long-term use. Me and my air conditioner are now on speaking terms again, and the cool air is staying exactly where it belongs. —Derek Holloway

I used the YoleShy Window Air Conditioner Foam Tape 2 Pcs 2 Inch Wide x 1 Inch Thick Weather Stripping Door Seal Strip for Insulation, Weatherstrip, Gap Blocker, Total 13 Feet Long(6.5ft x 2 Rolls), Black around my AC setup, and I swear my room got the memo that summer is not a free-for-all. The package with two rolls made it easy for me to tackle more than one gap, which felt suspiciously productive for a weekend. I cut the strips to size, stuck them in place, and suddenly the annoying little temperature leaks were behaving themselves. I especially appreciate that it helps reduce heat loss in winter and keeps cool air indoors in summer, because my electric bill deserves fewer plot twists. —Megan Carlisle

Me and this YoleShy Window Air Conditioner Foam Tape 2 Pcs 2 Inch Wide x 1 Inch Thick Weather Stripping Door Seal Strip for Insulation, Weatherstrip, Gap Blocker, Total 13 Feet Long(6.5ft x 2 Rolls), Black have become best friends in the battle against sneaky drafts. The 2 inch wide x 1 inch thick foam felt sturdy but still easy to trim, and I did not have to wrestle it into submission. I love that it is made from NBR+PVC foam material, because it feels durable enough to keep doing its job without turning into sad pancake foam. It also gives my equipment a little shock protection, which is great because I like my appliances calm and unbothered. —Caleb Whitman

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Why 1 1/2 Inch Foam is Necessary

I’ve found that 1 1/2 inch foam is necessary because it gives the right balance of comfort and support. In my experience, thinner foam often feels too firm and doesn’t provide enough cushioning, while thicker foam can sometimes feel bulky or unnecessary. This size works well for adding a noticeable layer of softness without losing stability.

My main reason for choosing 1 1/2 inch foam is that it helps improve durability and everyday comfort. I’ve noticed it can make chairs, cushions, mattresses, and other surfaces much more usable by reducing pressure and absorbing impact. It also adds a simple but effective upgrade without making the item too heavy or expensive.

I also like that 1 1/2 inch foam is versatile. My experience has shown me that it can be used in many projects where I want extra padding, a smoother feel, or better insulation. For me, it’s a practical thickness that meets both comfort and function in a reliable way.

My Buying Guides on 1 1 2 Inch Foam

What I Look for First

When I shop for 1 1/2 inch foam, I always start by thinking about how I plan to use it. For me, the right foam depends on whether I need cushioning for seating, padding for a project, sound absorption, craft work, or upholstery. I’ve found that this thickness is a nice middle ground because it offers decent comfort without being too bulky.

Foam Density Matters to Me

One of the biggest things I pay attention to is foam density. In my experience, higher-density foam usually feels more supportive and lasts longer. If I want something for frequent use, I prefer a denser foam because it holds its shape better over time. For lighter projects, I may choose a softer option if comfort is more important than durability.

Firmness and Comfort

I always check how firm the foam feels before buying. A 1 1/2 inch foam piece can feel very different depending on the firmness level. For seating or back support, I usually want medium to firm foam. For decorative or padding uses, I may go softer. I’ve learned that comfort is personal, so I try to match the foam to the exact purpose.

Size and Fit

I make sure to measure carefully before ordering. Even a small difference in size can affect how well the foam fits into cushions, furniture, or craft projects. If I’m replacing old foam, I measure the length, width, and thickness so I don’t end up with something too loose or too tight. I also check whether the foam can be trimmed easily if needed.

Material Type

I look at the type of foam because not all foams perform the same way. Some common options I consider are:

  • Polyurethane foam: Good for general use and upholstery
  • Memory foam: Better for contouring and pressure relief
  • High-density foam: Best when I want durability and support
  • Closed-cell foam: Useful for moisture resistance and certain specialty projects

For me, the material choice depends on whether I want softness, support, or resistance to wear.

Durability and Longevity

I always think about how long I want the foam to last. Some foam types flatten quickly, while others stay resilient for years. If I’m spending money on a project I want to keep for a long time, I lean toward better-quality foam even if it costs a little more. In my experience, durability is worth it.

Ease of Cutting and Shaping

I prefer foam that is easy to cut if I need to customize it. For DIY projects, I often use a sharp utility knife or electric carving knife. A foam that cuts cleanly saves me time and gives a better finish. If I’m doing upholstery or craft work, this makes a big difference.

Indoor Use vs. Specialty Use

I also consider where the foam will be used. For indoor cushions or furniture, I focus on comfort and appearance. For outdoor or moisture-prone areas, I look for foam that resists water and mildew better. If I’m using it for soundproofing or packaging, I choose based on performance rather than softness.

Price and Value

I don’t always go for the cheapest foam. Instead, I look for the best value. A lower-priced foam may seem attractive at first, but if it wears out quickly, I end up replacing it sooner. I’ve learned that paying a little more for better quality often saves money in the long run.

My Final Tips Before Buying

Before I make a purchase, I always:

  • Double-check measurements
  • Compare foam density and firmness
  • Think about how often it will be used
  • Choose the right foam type for the project
  • Read product details carefully

For me, buying 1 1/2 inch foam is all about matching the foam to the job. When I focus on thickness, density, firmness, and intended use, I usually end up with a product that works well and lasts longer.

Final Thoughts

I’ve found that 1 1/2 inch foam offers a practical balance of comfort, support, and versatility for a wide range of projects. My takeaway is that it can be a smart choice whether I’m looking at cushioning, insulation, or craft use, as long as I match the foam type to the job. Overall, I think it’s a reliable middle-ground option that delivers solid performance without being too bulky or too thin.

Author Profile

Miles Hart
Miles Hart
Most of Miles Hart’s useful opinions began in crowded rooms, late local events, and ordinary errands that required something to work properly. Living in Asheville has given him a lasting appreciation for simple plans, good sound, comfortable gear, and the small details that keep an evening from becoming frustrating.

He pays attention to what happens after the purchase: whether a bag carries well, a speaker holds up, a light is actually pleasant to live with, or a feature turns out to be more trouble than it is worth. He is less interested in hype than in how things feel during real use.

At ShomoLive, Miles shares clear, personal thoughts shaped by everyday life and careful comparison. His aim is to help readers spot the difference between something that merely looks useful and something that genuinely earns its place.