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Last updated: 21 November 2024

What Is the Mortgage Problem With Spray Foam Insulation?

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  • Polyurethane (PU) spray foam is an expanding foam insulator that is often used in cavity walls and lofts as an airtight thermal barrier. 
  • While spray foam insulation costs £21.5 per m2, its removal often costs much more due to the highly complex and labour-intensive process. 
  • Many mortgage lenders and equity forms are unwilling to lend to properties with spray foam loft insulation in place due to the complications of removing it later.  

Expanding spray foam insulation is renowned for exhibiting remarkable levels of thermal insulation for walls and lofts. With a u-value range of 0.022 - 0.028 W/m²K, it is one of the most successful materials in heat retention available today. However, this does not suggest that spray foam is free from its issues.

Most notably, homes with spray foam insulation commonly suffer mortgage issues in the UK. This is mainly due to the unwillingness of lenders and equity forms to assist homes with spray foam due to the various complications that come along with it. 

This ultimate guide by GreenMatch UK will provide a deep dive into spray foam home insulation and the mortgage issues it may create, including steps on how to avoid such issues.

Ready to insulate your home? Let GreenMatch UK free you from the burden of endless researching and vetting. Spend just 30 seconds filling out our online form and receive up to 3 free home-tailored quotes from our nationwide network: no costs or obligations. Simply click below to begin!

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Can spray foam insulation cause mortgage problems?

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Spray foam insulation may be remarkably effective at retaining heat, but is certainly not without its fair share of issues. Here’s a breakdown of the key problems that spray foam insulation can cause, and why it leads to mortgage problems:

  • Unsustainable: Polyurethane spray foam is made with highly synthetic materials that are unsustainable to produce, recycle or discard. The process of manufacturing also consumes a lot of energy.
  • Health risks: During and after installation, polyurethane spray foam can off-gas harmful toxins and volatile organic compounds (VOCs). These can pose a significant risk to your health and lead to respiratory issues.
  • Complex removal: Spray foam insulation is one of the most complex to remove, requiring installers to cut away large chunks, and then spend considerable time meticulously removing chunks by hand. The entire process can take several weeks. 
  • Home damage: Due to the strong binding capacity of spray foam, careless removal poses a great risk of home damage. In addition, the air-tight seal that polyurethane spray foam creates blocks all-natural ventilation. This can result in condensation, mould, and structural rot within your home.
  • Mortgage problems: As a result of the aforementioned issues, many mortgage lenders and equity firms are reluctant to lend to homeowners with spray foam insulation, especially in their lofts and roofs. This causes a devaluation of your property due to the perceived complications that spray foam brings down the line to a homeowner. 

Your best bet to avoid spray foam roof insulation mortgage problems is to work with a professional accredited installer who can assess your property and tailor the best approach for your needs.

How can spray foam insulation impact mortgage applications?

Spray foam roof insulation can pose challenges for mortgage applications and property valuations. A key spray foam insulation mortgage problem is the risk of potential roof damage and the very difficult removal process for outdated spray foam which leads lenders and equity firms to be hesitant to finance properties with this type of insulation. 

Additionally, these properties might be valued lower in the housing market as potential buyers may be deterred by the cost and complexity of removing spray foam insulation. This is especially the case for spray foam insulation found in loft and roof structures.

It's crucial to consider these factors when making decisions about home improvements. Working with a professional installer can help ensure that spray foam loft insulation mortgage problems are minimal through high-quality workmanship. Finding the right insulation companies can be a daunting task, requiring countless hours of research and vetting online, but GreenMatch UK can help.

By spending just 30 seconds filling out our online form, you can receive up to 3 free home-tailored quotes from our network of trusted installers. The best part? Our services are completely free of charges and obligations. Simply click below to begin! 

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How to avoid spray foam insulation mortgage problems

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While spray foam insulation offers numerous benefits, it's important to be aware of potential pitfalls that could lead to financial strain. By taking proactive steps, you can minimise these risks and enjoy the advantages of this insulation method.

  • Hire a qualified professional: A certified installer can accurately assess your home's specific needs and recommend the most suitable type of spray foam insulation. In addition, Professional installation ensures that the foam is applied correctly, avoiding issues like uneven coverage, excessive expansion, and damage to building materials.
  • Address home repairs: Before installing spray foam, identify and repair any existing damage to your roof, such as leaks, cracks, or gaps. Proper ventilation is also crucial to prevent moisture buildup and mould growth. A professional can help determine the appropriate ventilation requirements for your home.
  • Consult with a mortgage advisor: Discuss your plans with a mortgage advisor to understand how spray foam insulation may impact your home's value and your mortgage. A knowledgeable advisor can help you weigh the potential benefits, such as increased energy efficiency and reduced utility costs, against any potential drawbacks.
  • Consider eco-friendly options: Explore environmentally friendly spray foam alternatives, such as icynene (castor oil-based) or soy foam. These options offer similar performance to traditional polyurethane foam while minimising your carbon footprint.

By following these guidelines, you can maximise the benefits of spray foam insulation and avoid costly problems down the line.

Is spray foam insulation a good option for your home?

Spray foam has gained significant popularity due to its impressive performance and durability. When installed correctly, it can provide superior insulation, reducing energy consumption and improving indoor comfort. Additionally, it's resistant to mould, moisture, and fire, making it an effective cavity wall insulation material.

However, it's important to consider the environmental impact of spray foam insulation. Polyurethane spray foam, a common type, is derived from non-renewable resources and is notoriously difficult to recycle. Furthermore, the manufacturing and installation can release harmful volatile organic compounds (VOCs) into the air, posing potential health risks.

To make an informed decision, it's crucial to consult with a qualified insulation professional. They can assess your specific needs, evaluate the potential benefits and drawbacks of spray foam, and recommend the most suitable insulation solution for your home.

Skip the line and get the best bargains with GreenMatch UK. Spend just 30 seconds filling out our online form to receive up to 3 free home-tailored quotes from pre-vetted professionals in our network. The best part? Our services are completely free of costs and obligations. Simply click below to begin! 

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