Insulation &
Damp Surveys
Manchester
Insulation Services Manchester & Across the UK
We are GAP Insulation Services, a Manchester-based insulation company covering the whole of the UK. Whether you need cavity wall insulation extracted, new insulation installed, your loft cleared out or boarded, we handle it all. Properly, and without cutting corners.
We work with homeowners, landlords and managing agents who want straightforward advice and reliable work. No sales pressure. Just honest assessments and quality insulation services backed by proper accreditations.
Based in Manchester, we carry out the majority of our work across Greater Manchester but regularly travel UK-wide for larger or more complex jobs.
Not sure where to start?
Get in touch and we will arrange a survey to assess your property and talk you through your options. No obligation, no pressure.
If you are dealing with damp walls, mould or condensation, a professional damp survey is the sensible first step. We carry out independent moisture investigations using specialist equipment, then give you clear findings and practical recommendations. Our surveys are diagnostic, not sales led. We tell you what is actually wrong, not what costs the most to fix.
Failed or poorly installed cavity wall insulation is one of the most common causes of damp in UK homes. If your walls feel cold, you can see mould forming, or your energy bills have crept up despite having insulation fitted, extraction may be the answer. We use our own purpose-built vacuum system to remove old insulation safely and thoroughly, without causing damage to your walls.
Once your cavity is clean, or if your property has never been insulated, we install EvoBead EPS bead insulation. It is one of the most effective cavity wall insulation products on the market: moisture-resistant, thermally efficient, and backed by a 25-year guarantee. We are KIWA approved installers, so the work is done to the highest standard.
Old, damaged or contaminated loft insulation can cause more problems than it solves. Rodent infestations, water damage from a leaking roof, or simply insulation that has compressed and lost its effectiveness over the years. We remove all types of loft insulation safely, leaving your loft space clean and ready for the next step.
After removal, or where existing insulation has deteriorated, we install fresh loft insulation to current Building Regulations standards. A well-insulated loft can reduce your heating bills significantly and make a noticeable difference to how warm your home feels during the colder months.
Want to make better use of your loft space? Our loft boarding service transforms unused attic areas into practical, accessible storage. We fit raised boarding systems that sit above your insulation, so you get the storage space without losing any thermal performance. Popular across Manchester and the wider UK.
Is Your Home at Risk of Damp or Mould Problems in Manchester?
It is worth checking whether your property could be affected by poorly installed cavity wall insulation. Damp and mould problems linked to insulation tend to occur when several of these factors come together:
- The property is in a medium to high exposure zone for wind-driven rain
- Cavity wall insulation was installed in an unsuitable property type
- The insulation material was not appropriate for the location or construction
- There are gaps around pipe work, vents or flues that allow moisture in
- Pointing or render is in poor condition, allowing water into the cavity
- Debris at the base of the cavity is causing moisture to bridge across
If any of this sounds familiar, it is worth getting a professional assessment. We can carry out a survey and let you know exactly what is going on.
This is a view from the outside of a house with damp cavity wall insulation. The insulation itself is soaking wet. This will cause damp and mould issues inside the walls and needs to be removed.
This is the inside of a property that had damp cavity wall insulation. As you can see over time, it has bridged through to the inner brick of the house and damaged all the plaster work. It had to be removed.
Another cavity wall that has damp insulation. Over time, this insulation has become soaking wet, and will cause issues for the internal walls such as mould and damp. It needed to be removed.
Debris at the base of the cavity may lead to bridging and damp problems. Professional cavity wall insulation extraction removes this debris, helping to prevent bridging and eliminate the risk of damp.
This video shows a house with wet cavity wall insulation. This excessive moisture will in turn cause issues with damp and mould on internal walls. It needed professional cavity wall insulation extraction.
Why Choose GAP Insulation Services?
- KIWA assessed and KIWA compliant
- Quality Mark Protection accredited installer
- Listed on Checkatrade
- Based in Manchester, covering the whole of the UK
- Honest, independent advice with no sales pressure
- Purpose-built extraction equipment
Areas of the UK exposed to wind and rain
Exposure Zones
Approximate wind-driven rain (litres/m2 per spell)
The map shows approximate exposure levels across the UK. Manchester and much of the North West sit in a moderate to high exposure zone, which is why we see a good number of failed insulation cases in this region.
- VERY SEVERE 100 or more
- SEVERE 56.5 to less than 100
- MODERATE 33 to less than 56.5
- SHELTERED 33 or less
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