What Homeowners Need to Know
When it comes to insulating a home, homeowners often encounter various options, one of which is spray polyurethane foam insulation (SPF). While spray foam insulation has been used in the UK for over 30 years, its popularity has surged in recent years. However, this rise in use has also brought a wave of concerns regarding its safety and effectiveness.
Understanding Spray Foam Insulation
Spray foam insulation comes in two varieties: open cell and closed cell. Closed cell foam is firm and rigid, providing excellent moisture blockage but is more expensive and typically used for specific applications like failing roofs. Open cell foam, on the other hand, is lightweight and requires a vapour barrier, making it less suitable for many applications in the UK. Despite its insulating properties, both types can lead to significant issues if not installed or maintained correctly.
The Risks of Spray Foam Insulation
One of the primary concerns with spray foam insulation is its tendency to block ventilation in roof spaces. This can lead to severe condensation issues, particularly with closed cell foam, which exacerbates the risk of moisture build-up. Over time, trapped moisture can result in wood rot within roof timbers, undermining the structural integrity of the roof and posing serious safety risks. Additionally, the presence of moisture can encourage mould growth, which can degrade indoor air quality and lead to health concerns for occupants.
Mortgage and Equity Concerns
Adding to the challenges, mortgage lenders in the UK are increasingly reluctant to provide loans for properties with spray foam insulation. This hesitancy stems from the uncertainty surrounding the long-term effects of spray foam insulation and the potential complications involved in its removal. Homeowners looking to sell or remortgage may face significant hurdles, as many lenders and equity release companies refuse to lend on properties with spray foam.
Essential Documentation for Homeowners
For homeowners who already have spray foam insulation, it’s vital to maintain relevant documentation, including a certificate for the work completed and an installer warranty. Confirming that any guarantees can be transferred to future owners is also crucial. However, even with all necessary paperwork in place, it doesn’t necessarily mean the applicant was installed correctly and homeowners may still encounter challenges with lenders.
Not Suitable for Period Homes
It’s important to note that spray foam insulation should never be installed in period homes or listed buildings. The unique characteristics and requirements of these properties make them unsuitable for this type of insulation. Furthermore, in cases where spray foam has been applied, recovering the roof may not allow for the reuse of materials, adding to the potential costs.
The Difficulties of Removal
Should a homeowner decide to remove spray foam insulation, they should be aware that the process can be difficult, costly, and labour-intensive. While some homeowners may attempt to undertake the removal themselves to save on costs, this can pose significant health risks due to potential off-gassing of harmful chemicals if the foam is not installed correctly. It’s strongly advised to engage experienced insulation removal companies for this task.
Conclusion
In conclusion, while spray foam insulation offers certain advantages, it is not without its risks. Homeowners should carefully consider the long-term implications of installing spray foam and explore alternative insulation options.
If you have any questions about spray foam insulation or require assistance with a home survey, please don’t hesitate to reach out to us at 01245 601999 for expert advice. Your home’s safety and comfort should always come first.
