Modelling foam is a remarkably versatile construction material that is both strong and lightweight. Because of its lightweight nature, modelling foam is an excellent material for model making and an effective and efficient insulation product. It is used in various applications, from building remote control vehicles to creating architectural prototypes. 

Foam sheets are an accessible DIY material as they are super easy to work with. You can cut through them with a sharp blade without problems. If you’re not familiar with modelling foam, you might be surprised to know it exists in many places. It’s an appliance that can potentially work for most projects that require a rigid yet lightweight application. 

If you’re looking to make your home more comfortable, you might be thinking about foam board insulation. Fortunately, the installation of foam sheets is an accessible DIY project for the confident handyman. This article brings you everything you need to know about modelling foam, including when you should use it and how to install foam sheets.

What Is Modelling Foam? 

Modelling foam, often called foam board or foam sheets, is a lightweight material that boasts great strength. It consists of a foam sheet packed between two paper sheets. It’s easy to handle and install, making it an excellent choice for DIY home insulation. 

Styrofoam, for instance, is made up of trapped air bubbles that prevent heat from flowing through it. This traps heat, making an ideal insulator. Its closed-cell structure also makes it resistant to moisture. Plus, it can be cut and shaped with ease to fit wherever you want to use it.

Aside from insulation, modelling foam has a huge range of applications in the arts and crafts world. It’s a popular material choice in model making and other creative projects. It’s even an addition to architectural supplies for making prototypes.

Modelling foam is typically made from lightweight extruded polystyrene (XPS). XPS modelling foam has a dust-free surface that allows it to bond to a variety of sheet materials. 

Uses of Modelling Foam 

Modelling foam is handy for an extensive range of projects. You will most likely come across foam sheets in the following applications:

• Building insulation applications for walls, ceilings, attics, and roofs
• Model making 
• Prototypes for aircraft, architectural buildings, and model railways 
• Props within the film industry  
• Artwork, printing, and mounting canvas and linen rolls 

What Is Foam Sheet Insulation? 

Insulation with foam sheets is an excellent alternative to fibreglass insulation. It’s moisture-resistant, thicker, and a lot easier to work with and fit.

If you’re interested in DIY foam board insulation, it’s good to familiarise yourself with the different categories. Types include expanded polystyrene, extruded polystyrene, and polyisocyanurate. You’re likely to come across a huge selection, so be sure to choose wisely depending on what you want to achieve.

Expanded Polystyrene (EPS)

Expanded polystyrene is the cheapest kind of foam sheet installation. It’s commonly used for insulation under roofing and in foundation walls. 

Extruded Polystyrene (XPS)

You can often find extruded polystyrene in pink or blue panels, and it is often referred to as pink or blue foam. It is available to purchase in various thicknesses and size configurations for use in multiple home applications. It is commonly used for foundation insulation panels.

Polyiso (Polyisocyanurate)

Polyiso is the most expensive type of foam board insulation, as it is thicker and denser than the others. It is used as a rigid thermal insulation panel. It is often manufactured with a foil face that helps reflect and radiate heat, making it a good choice for insulation in attic spaces and vaulted ceilings.  

When Should You Use Foam Sheet Insulation?

For insulation purposes, foam sheets and boards work effectively in environments where they may potentially get wet. As the foam is moisture-resistant, it won’t face damage. It is multifunctional and can be applied in both interior and exterior applications. For example, foam insulation is commonly found in a building’s foundations or beneath house wrap, the synthetic material on the outside of buildings as a protective layer.

As it can be pricier than other insulation materials, it’s a good idea to opt for foam sheets when moisture is a potential threat. Otherwise, you may find fibreglass batt insulation more appropriate and cost-effective.

How to Install Foam Sheets

To install for insulation purposes, you can cut your sheets to size and shape using a utility knife or another blade. For more significant quantities, use a table or circular saw for cutting to speed things up.

Begin by measuring the project area where you want to install it, whether it’s a wall, ceiling or floor. You can fix the foam directly to surfaces, including brick and concrete. 

Special adhesives designed especially for foam sheets are available for securing foam boards in place. Cover the foam back with the adhesive and press the sheet to the surface as you smooth and secure it into position. 

Conclusion

Modelling foam can be ideal for multiple applications, whatever your project plans. It’s manageable enough to install yourself without the help of a professional tradesperson.

Suppose you want to get creative with foam for modelling. In that case, it’s worth looking around to purchase the highest-quality stationery, such as quality paints, specialty inks, and artist-quality pencils that suit every drawing need to make the most out of your modelling projects. You can even pick up gift sets that include all the relevant tools.

Trade Warehouse offers an extensive range of strong, lightweight, extruded polystyrene products in grey and white sheets. For further info, shop online to check our website prices and search categories to find the best foam sheets for the job. For online orders, click and collect options are available in Victoria and Western Australia.

Frequently Asked Questions

What is the best foam for modelling? 

You can find an extensive range of foam sheets with categories, brands and costs that work well for modelling purposes. Most are made from expanded polystyrene (EPS), a lightweight cellular plastic that creates a versatile and practical material for use in hundreds of applications, from model aircraft to dioramas.

How do you cut foam sheets?

You can cut foam sheets relatively easily using a bladed object such as scissors or a craft knife. For larger cuts or to cut more rigid foam, you might want to use electric tools. Good examples include hot wire cutters, an electric knife or an appropriate saw for faster results.  

What is XPS foam insulation? 

XPS foam insulation refers to extruded polystyrene that is used for insulation purposes. It provides solid insulation in various environmental settings and is particularly beneficial for residential homes and commercial applications. XPS foam is often used to line roofs, ceilings, and walls.