The removal of spray foam insulation is a significant task that dramatically alters a property’s appearance internally, and sometimes externally. If you are currently considering having your spray foam removed and are wondering what the end result might look like, read on… You’ll find spray foam removal before and after comparisons so you can decide if it’s right for you.
Ready to get started? Head to our spray foam removal cost calculator tool to find out how much removing spray foam could cost you.
Before Spray Foam Removal
A property with spray foam insulation, usually in the loft or roof space, will often appear somewhat uniform and sealed from the inside.
The foam will be rigid or semi-rigid depending on the type of foam being used – open-cell being somewhat spongy and closed-cell being denser and more rigid. It is usually white or yellow, but occasionally can be light blue.
Read more about open-cell removal examples on our service page so you can understand the full process.
The spray foam is typically applied to the underside of the roof deck, rafters, or wall cavities, creating a comprehensive, air-tight layer.
From the exterior, there might be no obvious signs of the spray foam, unless the foam has been applied improperly or has expanded excessively, in which case it could potentially be visible through gaps created.
Inside the insulated areas, expect to see:
- Uniform layer of foam: Covering the joists, rafters, and often extending down into eaves or wall spaces.
- Sealed gaps: All cracks and openings will have been filled, making the space feel very enclosed.
- Potential for issues: Depending on the foam’s age and application, there might be signs of degradation, crumbling, or areas where the foam has pulled away from surfaces. In some cases, there might be evidence of moisture trapped beneath the foam, such as damp patches, mould growth, or a musty smell.
- Obscured structural elements: The timber framework of the roof or walls will be completely hidden beneath the foam, making it impossible to inspect for issues.
After Spray Foam Removal
The transformation after spray foam removal is often dramatic and revealing. The property will return to a more traditional appearance, exposing the underlying structure and allowing for proper ventilation and inspection. Our professional removal services are designed to improve the state of your property.
Internally, in the areas where the foam was removed, you would expect to see:
- Exposed structural elements: The entire timber framework – rafters, joists, and any associated sarking felt boards – will be fully visible. This allows for thorough inspection for any damage that might have been hidden by the foam.
- Cleaned surfaces: The surfaces where the foam was attached will be cleaned of residues, though some minor discolouration or remnants might remain depending on the removal method.
- Restored ventilation: The removal process often involves clearing existing vents or installing new ventilation systems to ensure adequate airflow, especially in roof spaces.
- Potential for exposed damage: It’s common to discover pre-existing damage to timbers (e.g., damp, rot, or insect infestation) that was obscured and potentially made worse by the spray foam. Remedial work for these issues can then be carried out.
Externally, the most significant change would be the resolution of any issues that were caused or worsened by the spray foam. For instance, if trapped moisture led to roof degradation, the removal and subsequent repairs would restore the roof’s integrity and appearance. The property would regain its ability to “breathe” naturally, preventing future moisture build-up.
The space will be ready for the installation of more traditional and breathable insulation materials, if desired, such as mineral wool or rigid insulation boards, which are installed in a way that still allows for a thorough inspection of the roof structure.
Spray Foam Removal Before And After Comparison
Want to get an idea about what your loft space could look like after spray foam removal. Here are some pictures to illustrate:

As you can see from the image, once spray foam insulation in the loft is removed to make way for insulation rolls, there isn’t much difference in the way your loft space looks, but there is a huge difference in the way your insulation performs. You’ll avoid potential issues with spray foam and enjoy greater peace of mind.
To get a better idea about the process of closed-cell removal, check out our service page. From here you’ll be able to enter your details and get competitive quotes from our removal partners. Unsure if you have closed or open cell spray foam? Simply contact us today and we’ll help you figure it out.
Once you know what spray foam insulation you’re dealing with you should learn more about the factors affecting spray foam removal cost in the UK, so you can work out how much removing your spray foam could cost.


