Why a Reroof may be the only option?
The necessity for a roof replacement or reroofing after the removal of closed-cell spray foam insulation is not a universal requirement. Still, in some instances, it may be recommended or deemed necessary. Here are some reasons why reroofing might be considered after closed-cell spray foam removal:
- Adhesive Bond and Substrate Damage: Closed-cell spray foam is known for its strong adhesive properties and can form a tight bond with various substrates, including roof decking. During removal, the foam may adhere tightly to the substrate, leading to potential damage upon separation. This adhesion can be incredibly challenging when the foam has been in place for an extended period.
- Structural Integrity Concerns: Closed-cell spray foam often provides structural support to the roof. Removing the foam may reveal underlying structural issues or weaknesses that were not apparent while the insulation was in place. In such cases, addressing these structural concerns may involve reroofing to ensure the roof's stability and integrity.
- Moisture Accumulation: Closed-cell spray foam is designed to resist moisture. However, removing the insulation may expose hidden issues if moisture has penetrated the foam or the underlying roof structure during its lifespan. Reroofing may be necessary to address any water damage or moisture-related problems.
- Age of the Roofing Material: The age of the existing roofing material is crucial. If the roof is nearing the end of its lifespan or is in poor condition, it may make sense to re-proof it after closed-cell spray foam removal. This provides an opportunity to install a new roofing system that complements the overall structure.
- Roofing Code Compliance: Local building codes and regulations may influence the decision to reroof after closed-cell spray foam removal. If the existing roof does not meet current code requirements, a reroofing project may be necessary to ensure compliance.
- Upgrade or Modification Requirements: If modifications or upgrades to the roofing system are desired, such as installing a different type of roofing material or improving insulation, it may be more practical to incorporate these changes during a reroofing project.
It's important to note that not every closed-cell spray foam removal will necessitate a reroof. The decision to reroof is typically made on a case-by-case basis, taking into account the specific conditions of the existing roof, the extent of damage during removal, and the property owner's goals. Consulting with experienced professionals who specialise in insulation removal and roofing can provide valuable insights and recommendations tailored to the unique circumstances of each project.