How to glue the foam with each other and with other surfaces

Although it can appear difficult, adhering foam is a simple process when the proper tools and methods are used. For a long-lasting and robust outcome, it’s crucial to understand how to correctly bond foam to itself and other surfaces, whether you’re working on a larger construction project, home improvement project, or craft project. The ideal adhesive to use will mostly depend on the kind of foam and the surface to which it is being attached.

Particular kinds of glue are needed for the special properties of foam materials like polystyrene and polyurethane. The incorrect adhesive can cause the foam to become damaged or lead to a poor bond. Certain adhesives, for example, have solvents in them that can melt foam. For successful adhesion, choosing an adhesive that is safe for foam is essential.

Surface preparation is essential when gluing foam to other materials like wood, metal, or plastic. It is important that both surfaces be dust- and grease-free, dry, and clean. Sanding the surfaces slightly can sometimes strengthen the bond. A solid hold can be ensured by spreading the adhesive evenly and giving it enough time to cure.

Adhesives come in different forms, such as contact cement, spray adhesives, and specialty foam glues. Each has benefits specific to the application in question. By being aware of these possibilities, you can select the adhesive that will work best for your project and guarantee a strong, long-lasting bond.

Types of adhesives

You need to know precisely what material the foam sheets are glued to in order to make the right choice of adhesive composition. The entire insulation structure is destroyed as a result of the incorrect adhesive selection and subpar adhesive.


Because polyurethane glue is made as an aerosol, even novice users will find it easy to use for attaching insulation. The product is affordable, ready to use right away after purchase, and doesn’t require stirring.

  • Insta-style. Release form – cylinders of 0.75 liters. Consumed 1 b. 12-15 m². Clutch time – 20 min. The limit of strength – up to 400 thousand. PA. Can freeze. Cannot be used at negative temperatures.
  • Titan Styro-753 . Consumption – 1 b. At 14 m². The strength of the strength – 600 thousand. PA. Clutch time – 15 min..
  • Penilia Fix & Go Montage. This is a frost -resistant composition, use is possible for t ° C from -65 to +130 ° C.

Polyurethane adhesives can be used to adhere foam to concrete, brick walls, wood, and to fuse plates together.

Polymeric adhesives

Foam glue of the polymer type comes in little spray cans. When the slabs need to be bonded to the metal, use makes sense. Money is obtained immediately. Polymer mixtures are rarely used by novices because it is impossible to correct the incorrect positioning of the insulation structure’s components.

  • Moment. Moisture -resistant, heat -resistant composition, which is sold in a container with a volume of 250 ml to 1 liter. Little packaging is enough for gluing 4-5 m. sq. surfaces.
  • Emphycol 225. Has the same characteristics as the "moment". It is better to use outside, because after internal work you need to ventilate the room for 2-3 days.


Cement and regular and fine-grained gypsum form the foundation of mineral mixtures. Sold loose, you must knead it before using. Since glue sets quickly, it is best to work with small amounts that are used right away.

Cement-based mixtures work well for external thermal insulation, while gypsum compositions work best for interior work.

The mixture takes 1.5–4 hours to grab, giving ample time to reposition the sheets and remove any mistakes.

Mineral mixtures are only suitable for pre-priming. The relationship will be brittle in the absence of soil processing. A construction mixer is used to prepare single-phase mixtures of excellent quality.

  • Ceresit CT 83 . You can glue the material to any basis. Reinforcement for separation – 500 kPa, frost -resistant.
  • Atlas Stopter K-20. The strength of the strength – 600 thousand. PA. Viability time – 4 hours. 4.4 kg per m² is consumed. The composition is supplemented by reinforcing fiber.

Divide into 5–25 kg bags.

  • If the packaging is indicated on the marking F50, then the tool for work indoors is indicated.
  • Frost resistance class F100 involves the use of adhesive for external work.

Waterproofing compounds

Rubber, acrylic, and bitumen compositions are included in the group. offered for sale as mastics.

It cannot be used as liquid glue because, like other waterproofing mixtures based on oil products, it corrodes when exposed to foam.

"Bitumast XPS" is the best bitumen mixture. The battle lasts 48 hours and contains no solvents. The 500 thousand is the limit of strength. PA. more robust against freezing temperatures and more water-resistant.

Adhesive acrylic waterproofing compounds adhere plates to a brick, concrete, wooden, or metal foundation. Two insulating sheets can be joined together by using foam adhesive. The blends are good for both external and interior insulation, and they consume little energy.

Bitumen mastic

It’s possible to work in cold weather. They either fill the spaces between individual sheets or glue the insulation onto the bitumen mastic in its entirety. It functions as a hydrophobic filler in the second scenario.

Mastic is applied with a spatula or maclovice. Shrinkage is not necessary for the remedy. Penoplex adheres well to a mineral or metal base.

Liquid Nails

Almost any base can have the foam affixed to it using liquid nails. When installing insulation within a home, standard mixtures are utilized for the external treatment, and heat-resistant liquid nails are chosen.

The mixture is offered for sale in tubes. For the greatest coupling with the base, apply to the sheets using a snake over the whole surface. dries in ten to twenty seconds. It costs a fair amount by other methods.

Although adhering foam to other surfaces or to itself can be challenging, you can create durable bonds using the appropriate supplies and methods. To ensure the adhesive won’t dissolve or harm the foam, first select the right kind, such as a spray adhesive or a glue designed specifically for foam. In order to improve the grip, thoroughly clean the surfaces and, if needed, lightly sand them. After evenly applying the adhesive, press the foam pieces together and secure them there until the glue hardens. You might want to use a weight or clamp for extra strength. You can successfully glue foam for any project if you prepare carefully and use the appropriate adhesive.

Surface Glue Type
Foam to Foam Use spray adhesive or white glue, apply evenly on both surfaces, press together and let dry.
Foam to Wood Use a strong adhesive like polyurethane glue, apply to the wood, press foam onto it, and clamp until dry.
Foam to Metal Use contact cement or epoxy, apply to both surfaces, let it set slightly, then press together firmly.
Foam to Plastic Use hot glue or plastic adhesive, apply to the plastic, press foam onto it, and hold until set.
Foam to Fabric Use fabric glue or spray adhesive, apply to the fabric, press foam onto it, and let dry.

If you use the proper adhesive and adhere to a few easy steps, adhering foam to itself or other surfaces can be a simple task. It is essential to comprehend the characteristics of both the foam and the surface you are working with. For a solid and long-lasting bond, different kinds of adhesives are needed for different materials.

Spray adhesives or specialty foam glues are usually the best options for foam-to-foam applications. They preserve the foam while offering uniform coverage and a solid bond. For best results, apply the adhesive evenly and let it get tacky before pressing the pieces together.

It’s crucial to use an adhesive that works with both foam and other materials when adhering foam to surfaces like plastic, metal, or wood. Polyurethane glue, epoxy, and contact cement are excellent choices. Prior to using the glue, make sure the surfaces are clean and dry. Enhancing the bond strength during the adhesive curing process can be achieved by clamping or applying pressure.

The secret is to be patient. Prior to applying any force on the bond, let the adhesive completely cure. Depending on the type of glue and the surroundings, this could take a few hours or even overnight. If you follow these instructions, you can create a strong and long-lasting bond whether you’re working on a simple craft project or a more difficult construction task.

Video on the topic

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Daria Yakovlev

Interior designer, author of online color design courses. I will help you create a harmonious interior using color.

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