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Why Prefab Builders Use Spray Foam Insulation

Posted by Ecostar Insulation on August 05, 2025

Prefab construction projects are becoming much more popular these days because of their convenience and ease of assembly. As more builders and homeowners turn to modular and factory-built structures, the demand for high-performance materials has grown alongside it. One of the most vital components of any kind of building is insulation. When it comes to prefab buildings, many builders are turning towards spray foam insulation in Toronto because of its quality, longevity and performance. Its application also makes it an excellent choice for prefab construction projects. If you want to elevate the energy efficiency, leak protection and overall comfort of your property, spray foam insulation is the right choice. Reach out to EcoStar Insulation today for a quote on spray foam insulation costs

Here is a breakdown of why spray foam insulation is preferred for prefab buildings.

What are Prefab Buildings?

spray foam insulation torontoPrefab buildings are structures that are partially built off-site and then assembled on-site. So essentially all of the main construction is done at a warehouse and factory, and then the walls and rooms are assembled at the location when it is ready. 

While this may seem unorthodox, this method of construction tends to be much faster and more cost-effective than traditional construction. 

Given the precision needed to create pre-assembly structures, it is necessary that builders rely on high-quality materials that will last through the assembly process. Since spray foam insulation is spray applied, it can be installed easily before the building is even assembled.

Benefits of Spray Foam in Prefab Applications

Spray foam insulation in Toronto is one of the preferred choices for prefab buildings because of its durability, high-quality and performance. 

Superior Air Sealing & Water-Resistance

Having an airtight seal is extremely important in prefab homes and buildings, as this will ensure that even if there are any small gaps in the structure, air and water cannot leak through into the property. Spray foam insulation is the best variety available if your goal is to create an airtight seal around your home. Since spray foam insulation starts out as a liquid, it is able to make excellent contact with every single surface of your building, allowing it to fill even tiny gaps. Once the insulation is dry, it creates an airtight seal that prevents air or moisture from infiltrating your home from the outside.

This will help protect your building against any unwanted drafts, contributing to a more comfortable indoor environment. Spray foam insulation also acts as a line of defence against water intrusion. Closed-cell spray foam insulation is entirely waterproof, deterring leaks. 

Excellent Thermal Resistance & Energy Efficiency

The thermal resistance of spray foam insulation is superior to other options on the market, and this is evident through its R-value. R-value measures a material's ability to resist heat transfer; the higher the value, the better. Closed-cell spray foam insulation has an R-value of over 7, which is unlike other varieties available. This thermal resistance helps keep your indoor temperatures stable throughout the year. 

It prevents heat from escaping your home in the winter and entering your home in the summer, putting less strain on your HVAC system. Since your A/C and heating system do not have to work as hard to maintain the indoor temperature, less energy will be expended on heating and cooling. This will contribute to lower energy bills, helping you save money on every monthly bill.

Trust EcoStar Insulation for Your Next Prefab Project

Prefab construction projects are now becoming more popular due to their time efficiency and cost-effectiveness. However, when constructing these structures, it is still essential that high-quality materials are used to ensure the property remains durable throughout its life. Spray foam insulation in Toronto is a wise choice for any prefab or traditional construction projects as it provides an airtight seal, can resist water, has an excellent R-value and is energy efficient. If you are interested in quality insulation for your next project, reach out to EcoStar Insulation today for a quote on spray foam insulation costs. 

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