Cavity wall insulation
Cavity wall insulation across Yorkshire.
Find out whether your cavity walls are suitable and how filling the gap could reduce heat loss. We assess first, so you know what's possible before booking.
- Cavity assessment
- Injected insulation
- Sealed and finished
Service Details
About This Service
At Northstar Insulation Co., we install cavity wall insulation for homeowners across the region - filling the gap between your inner and outer walls to significantly reduce heat loss. Whether your walls have never been insulated or your existing fill has sagged and needs extracting, we'll check what's needed and get it sorted properly.
We use Superbead 33 - a high-performance cavity wall insulation system made from carbon-enhanced expanded polystyrene (EPS) beads bonded with adhesive. It offers excellent thermal performance, resists moisture, and is designed to last the lifetime of the building.
- Thermal conductivity of 0.033 W/mK - market-leading performance
- Resists moisture and prevents settling over time
- Approved for residential properties across the UK
- Reduces heat loss through walls and improves energy efficiency
- Installed cleanly with no internal work required
We work to current building regulations and use only approved materials - so the job is done right first time.
Cavity wall insulation starts from £23 per sqm depending on cavity depth - full pricing and assessment details are available on our pricing page.
Request pricingWhat is Included?
Our cavity wall insulation service includes:
- 1
Assessment appointment - we check whether you have a suitable cavity, whether existing fill needs extracting, measure cavity depth, and measure the walls that require treatment - £100 + VAT, deducted from your final bill
- 2
Preparation - we identify and drill a predetermined pattern of injection holes into the external wall
- 3
Injection - Superbead 33 EPS beads and bonding adhesive are injected simultaneously into the cavity, forming a stable, breathable insulation layer
- 4
Finishing - injection holes are sealed with mortar to match the existing wall - no visible difference from outside
- 5
Aftercare advice - we walk you through what's been done and answer any questions
Every job is carried out by our trained installers to a consistent, high standard.
Benefits
Service Benefits
Choosing Northstar Insulation Co. for your cavity walls means:
- 1
Lower energy bills - reduce heat loss through your walls and see the difference on your energy costs
- 2
A warmer, more consistent home - cavity wall insulation is one of the most effective improvements you can make
- 3
Improved EPC rating - valuable if you're planning to sell or let your property
- 4
No disruption inside your home - all work is done externally - no mess, no decorating required
- 5
Installed by an accredited local team - who know Yorkshire properties and work to current building regulations
We take the time to do it properly - because a well-insulated home makes a real difference to the people living in it.
Related services
Explore other insulation services that are often recommended alongside this one.
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.
We use cookies to improve your experience.