Spray foam insulation has gained popularity as an effective method to improve energy efficiency in homes. However, recent reports suggest that its use can have implications on mortgages, finance, insurance, and equity release. In this article, we delve into the challenges homeowners face when using spray foam insulation in their properties and explore potential solutions. This Retirement Solutions article looks at Spray Foam and Mortgages.
What is Spray Foam Insulation?
Spray foam insulation is a liquid insulation applied with a spray gun. It expands to fit the available space and sets to form an insulation layer. It is commonly used to insulate roofs, lofts, and attics. There are two main types of spray foam insulation:
- Open Cell: Remains soft after setting and is less prone to condensation. However, it provides less insulation due to its lower density.
- Closed Cell: Rigid once set and offers better insulation. However, it acts as a vapor barrier, reducing ventilation.
Spray foam insulation primarily consists of two key components that react to create polyurethane foam. This foam is widely used for insulating homes and buildings, providing an effective barrier against heat loss and drafts. Let’s explore these components in more detail:
Isocyanate:
- Isocyanate is a chemical compound containing reactive isocyanate groups.
- When combined with the second component (polyol resin), it initiates a chemical reaction.
- Isocyanate plays a crucial role in expanding the foam and creating its cellular structure.
Polyol Resin:
- Polyol resin is a type of polymer made from organic units.
- When mixed with isocyanate, it forms the polyurethane foam.
- Polyol resin provides strength and structure to the foam.
The resulting foam expands significantly upon application, filling gaps, cracks, and voids. Its cellular structure enhances insulation properties, making it an attractive choice for homeowners seeking energy efficiency. However, correct installation by professionals is essential to ensure effectiveness and avoid potential issues.
Challenges and Implications
1. Mortgages
Some homeowners have encountered difficulties when mortgaging or selling properties with spray foam insulation. Incorrect installation or inappropriate use can lead to problems, including reduced air circulation, dampness, and condensation. Surveyors may find it challenging to inspect individual roofs covered by spray foam, affecting property valuations and mortgage decisions1.
- Issue: Homeowners who have installed spray foam insulation may encounter difficulties during property valuation for mortgages or when selling their homes.
- Reason: Incorrect installation or inappropriate use can lead to problems such as reduced air circulation, dampness, and condensation.
- Impact: Surveyors may find it challenging to inspect individual roofs covered by spray foam, affecting property valuations and mortgage decisions.
- Source: The House of Commons Library: Spray Foam Insulation and Mortgages
2. Equity Release
Equity release lenders are cautious about properties with spray foam insulation installed after construction. Currently, no equity release lenders accept such properties due to concerns about internal moisture levels and potential risks2.
- Issue: Equity release lenders are cautious about properties with spray foam insulation installed after construction.
- Reason: Concerns about internal moisture levels and potential risks associated with spray foam insulation.
- Impact: Currently, no equity release lenders accept properties with spray foam insulation.
- Source: Anecdotal evidence from industry experts.
3. Insurance
Potential buyers and surveyors view properties with spray foam insulation sceptically, fearing hidden dampness and ventilation issues. Some UK insurance companies hesitate to insure such homes3.
- Issue: Potential buyers and surveyors view properties with spray foam insulation sceptically.
- Reason: Fear of hidden dampness, ventilation issues, and potential long-term consequences.
- Impact: Some UK insurance companies hesitate to insure homes with spray foam insulation.
- Source: Industry reports and homeowner experiences.
Removal of Spray Foam
While specific statistics on spray foam insulation’s impact are limited, anecdotal evidence highlights the challenges faced by homeowners. The Royal Institution of Chartered Surveyors (RICS) acknowledges the potential effects on property valuation, and the Home Owners Alliance (HOA) advises homeowners to consider removal1.
- Issue: Removing spray foam insulation can be expensive.
- Reason: Incorrectly installed or problematic spray foam requires removal.
- Impact: The cost for removing spray foam insulation from a three-bedroom detached house roof is approximately £3,200 (or £40 per square meter).
- Source: Checkatrade
Spray foam is not cavity wall insulation
Spray foam insulation and cavity wall insulation are two distinct types of insulation with different applications and installation methods. Spray foam insulation, also known as spray polyurethane foam (SPF), is applied as a liquid and expands to fill gaps and create an airtight seal. It’s versatile, used in various areas like roofs and walls, providing effective insulation, soundproofing, and energy efficiency.
However, it’s costly, requires professional installation, and can be challenging to remove. On the other hand, cavity wall insulation fills the gap between the inner and outer walls of a cavity wall, primarily enhancing thermal efficiency and soundproofing. It’s available in various materials and offers structural reinforcement, but requires expert installation and may pose moisture concerns if improperly installed.
Conclusion about Spray foam and Mortgages
Spray foam insulation offers energy efficiency benefits, but homeowners must weigh these advantages against potential challenges related to mortgages, finance, insurance, and equity release. Seeking professional advice and ensuring correct installation are crucial steps to mitigate risks associated with spray foam insulation.
Remember that this information should not be relied upon as legal or professional advice. Always consult with experts before making decisions related to your property.
Other Reading
For more information, you can refer to the following sources:
- The House of Commons Library: Spray Foam Insulation and Mortgages
- Home Owners Alliance: Spray Foam Roof Insulation Warning
- Countrywide Coatings: The Myth Behind the Mortgage Problem with Spray Foam
- The Loft Boys: The Controversy Surrounding Spray Foam Insulation in the UK
Remember that spray foam insulation should always be installed by professionals to achieve optimal results and minimise any associated risks. If you’re considering using spray foam insulation, consult with experts and explore its benefits and challenges thoroughly.
