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Silverlake 11x17x7 Craft Foam for Styrofoam Block Projects

  • Based on 703 reviews
Condition: New
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$26.98 Why this price?
Holiday Deal · 50% off was $53.47

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This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2026

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Availability: Only 3 left in stock, order soon!
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Arrives Tuesday, Dec 16
Order within 11 hours and 8 minutes
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Features

  • PROFESSIONAL-GRADE AMERICAN-MADE: Manufactured in the USA by an American small business. Premium hard foam blocks (not soft/squishy foam) designed for professional artists, model makers, and crafters. Dense, rigid material perfect for precision work.
  • VERSATILE & DURABLE DESIGN: Made from high-density EPS (Expanded Polystyrene) foam (the professional-grade material commonly searched for as styrofoam blocks). Can be sanded, shaped, and painted. Water-based paint and sealant safe. Cuts cleanly with a hot-wire knife for precise detailing.
  • PERFECT FOR PROFESSIONAL & EDUCATIONAL PROJECTS: Ideal for architectural models, dioramas, props, sculptures, and educational displays. Creates clean, precise bases for scale models, railroad scenery, and professional presentations. Superior surface finish accepts detail work and various coatings.
  • PREMIUM SPECIFICATIONS: Professional 1-pound density foam ensures consistent quality throughout. Single piece measures 11x17x7 inches. Lightweight yet sturdy enough for permanent displays and handled projects. Weather and moisture resistant - withstands freeze-thaw cycles.
  • MULTIPLE APPLICATIONS: Excellent for model making, scenic design, STEM projects, theater props, art installations, and professional displays. Perfect for wargaming scenery, model railroad terrain, hydroponics, aquaponics rafts, and specialized packaging. Accepts adhesives well and holds detail. Suitable for both precision crafting and larger projects including small-area insulation.

Features

  • EXCELLENT FOR CRAFTING - Easy to work with. Smooth Foam board can be cut, sanded, coated or painted
  • LIMITED ONLY BY YOUR IMAGINATION - Polystyrene sheets are ready to be cut into cubes or shapes. Other popular uses include protection for packaging, aquaponics / hydroponics raft, wargaming scenery base, model railroad terrain building, school craft projects and insulation for smaller areas.
  • LETTERS - SIGNS - WALL DECOR - CRAFTS - FLORAL - BAKING - CENTERPIECE - Use with Cake Pops, Flower Arrangements, Decor, Diorama and Model Making
  • When customers refer to styrofoam, they are commonly talking about polystyrene (Expanded Polystyrene or EPS) products, such as foam cups, packing material and food take out boxes. Polystyrene is routinely mistaken for styrofoam even though STYROFOAM is a trademarked brand of foam instead of a foam style. Polystyrene has some amazing characteristics including being 100% recyclable and landfill safe. Polystyrene is not only excellent for shipment padding but also floats and will not rot, mildew or otherwise loose its effectiveness if exposed to moisture.
  • EPS FOAM - Large Foam Block of White Expanded Polystyrene Foam - 1 Pound Density - CONTENTS - 1 piece of 11x17x7 inch thick block / cube

Brand: SilverlakeLLC


Color: White


Material: Foam


Item Weight: 0.6 Pounds


Number of Items: 1


Recommended Uses For Product: Modeling


Item Dimensions LxWxH: 11 x 17 x 7 inches


Product Dimensions: 11 x 17 x 7 inches


Item Weight: 9.6 ounces


Manufacturer: SilverlakeLLC


Country of Origin: USA


Item model number: 11x17x7Block


Date First Available: June 21, 2019


Brand: SilverlakeLLC


Color: White


Age Range (Description): Adult


Material: Foam


Number of Items: 1


Recommended Uses For Product: Modeling


Special Feature: Non-Toxic, Waterproof


Item dimensions L x W x H: 11 x 17 x 7 inches


UPC:


Brand: SilverlakeLLC


Color: White


Age Range (Description): Adult


Material: Foam


Number of Items: 1


Recommended Uses For Product: Modeling


Special Feature: Non-Toxic, Waterproof


Item dimensions L x W x H: 11 x 17 x 7 inches


UPC: 711599318642


Product Dimensions: 11 x 17 x 7 inches


Item model number: 11x17x7


Item Weight: 9.1 ounces


Manufacturer: SilverlakeLLC


Date First Available: June 21, 2019


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Dec 16

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Dragon
Sculpting a mountain for a water feature with a dragon.
Reviewed in the United States on August 3, 2023 by Jerry Jacene

  • Good size
No issues, does what I needed it's a styrofoam block. Will buy again
Reviewed in the United States on July 1, 2023 by metalstorm

  • Quality of the foam is most important to me.
The foam block fit perfectly in the wooden box that I created a flower arrangement in.
Reviewed in the United States on May 9, 2023 by teresa cogburn teresa cogburn

  • Exactly as described on website, fast delivery
I used styrofoam blocks as platforms for plants in lieu of massive amount of stones and dirt in large planter. This reduced the overall weight and cost of filling the planter. The plants are happy.!
Reviewed in the United States on March 19, 2023 by G

  • Styrofoam volcano
My daughter made a styrofoam volcano out of this for school. We cut through it with an electric hot styrofoam cutter off of Amazon and put quick dry cement over it to give it texture and then she painted it at school. Definitely worth the money.
Reviewed in the United States on February 19, 2023 by Sabrina Sabrina

  • Great for crafting!
I cut this in half to make a disco cheese (long story haha) this was durable and survived through rainy weather at the festival. Would recommend!
Reviewed in the United States on February 22, 2023 by Jackie Miller Jackie Miller

  • Shaping for a car scoop
The block works great. I got it 7" thick as I needed 2 pieces about 3-1/2" thick and just cut the block in half. I looked into getting a hot wire cutter but since I was just going to shape the block anyway I just ended cutting it in two with a regular hand saw. I found that you can shape fast with 80 grit sandpaper and finish with 120. I use the sandpaper on the semi rigid rubber body working blocks. I will be covering it with brushable encapsuling plastic coating to be able to vacuum form my part. ... show more
Reviewed in the United States on January 29, 2021 by Michael Good

  • Amazingly perfect!
I needed to make a floral arrangement in a huge antique "pitcher". This foam was easy to slice around the corners to fit into this huge vessel. I used floral "clay" to stick it to the bottom, and it held well. Easy to use.
Reviewed in the United States on December 28, 2021 by Susan Patterson

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