Northstar Insulation Co.
Insulation in York and across Yorkshire.
Loft, cavity wall and underfloor insulation, spray foam removal and insulation for new builds. We'll help you find the right option for your property.
Start here
What do you need help with?
Tell us what you want to change and we'll help you work out where to start.
Insulation for Yorkshire homes
The right insulation starts with your property.
Every home is different. We look at what's already in place, the construction of your property and what you want to improve before recommending work.
How we workFrom your first enquiry to a clear scope and written quote.
See the processOur services
Insulation for different types of property.
From improving an existing home to planning a new build, explore the work Northstar can help with.
- Loft insulationTop up or replace existing insulation and make better use of your loft with boarding and hatch options.
Cavity wall insulationFind out whether your cavity walls are suitable and how insulation could help reduce heat loss.
Spray foam removalHave existing roof foam assessed and understand what removal would involve for your property.
Underfloor insulationExplore insulation for suspended timber floors, with access and ventilation considered from the start.
New-build insulationDiscuss insulation for your build, from the project specification through to installation.
Property & installation photos
A closer look at the work.
Property exteriors, materials and details from the job site.
Stone and timber entrance01 
Cavity wall installation detail02 Underfloor insulation03
How we work
From enquiry to installation.
Know what needs checking, what's included and what happens next.
- 01
Tell us about your property
Share your postcode, the work you're considering and any concerns you already have.
- 02
Check what's suitable
We'll explain what needs assessing and let you know about any survey charges before booking.
- 03
Agree the work
Once the scope is clear, you'll have a written quote before deciding whether to go ahead.
- 04
Complete the installation
Once you're happy to proceed, we'll arrange a date and confirm access and timings.
Areas we cover
Local to York. Working across Yorkshire.
From brick terraces to stone cottages and newer homes, we help you choose insulation suited to your property. Share your postcode and we'll confirm whether we cover your area.
See areas we cover
FAQs
Good to know.
How much does loft insulation cost in Yorkshire?
The cost depends on the size of your loft and the type of insulation used. We assess every property individually so you get an accurate price before any work begins - no hidden charges and no obligation.
What is cavity wall insulation and is my home suitable?
Cavity wall insulation involves injecting insulation material into the gap between your inner and outer walls. Most Yorkshire homes built between 1920 and 1980 - including terraces and semis - are suitable. We'll assess your property and let you know exactly what's possible.
Will insulation work cause disruption to my home?
Most of our installations are completed in a single day with minimal mess. Cavity wall work is done entirely from the outside, and loft insulation requires no major upheaval. We always leave the property clean and tidy.
Can spray foam insulation affect my mortgage?
Some lenders have raised concerns about certain types of spray foam in roof spaces. We only use approved products and will always advise you on the best option for your property and circumstances before any work begins.
Get in touch
Tell us about your home.
Not sure which insulation is right for your property? Tell us what you'd like to improve and we'll talk you through the options.
Request a quote
Share a few details and we'll be in touch about the next step.
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