Cavity Wall & Loft Insulation in Lowestoft | Co-Dunkall

Author: Co-Dunkall Ltd || Date: 13th July 2026

Co-Dunkall Ltd provides Blown Bead and Loft Roll Lowestoft services for cavity wall and loft insulation. Whether you need cavity wall insulation topped up or a full loft insulation install, our team covers Lowestoft and the surrounding coastal and rural areas of East Norfolk and Suffolk.

Key Facts — Blown Bead & Loft Roll, Lowestoft

Services: Blown bead cavity wall insulation, loft roll installation, top-up insulation
Coverage: Lowestoft, Great Yarmouth, Norwich, Beccles, Bungay, Halesworth and surrounding villages
Supplier: Insulation materials available through our Eastern Insulation Supplies division
Operating since: 2008 — East Anglia’s largest and most-reviewed screeding and insulation firm

Blown Bead and Loft Roll Lowestoft — Your Insulation Options

Blown bead insulation is used to fill or top up cavity walls. Small injection holes are drilled into the external mortar joints, and polystyrene beads bonded with adhesive are pumped into the cavity under controlled pressure. The holes are repointed the same day, leaving no visible trace. It’s a clean, fast process that can typically be completed within a single day for a standard property.

Loft roll insulation is laid between and across ceiling joists in your roof space. Current Building Regulations recommend a minimum loft insulation depth of 270mm. Many older homes in Lowestoft — particularly the Victorian and Edwardian terraces around the High Street, Kirkley, and Oulton Broad — were built with little or no insulation and benefit significantly from topping up to modern standards.

Both methods reduce heat loss, lower energy bills and improve comfort year-round. We can assess your property and recommend which approach — or combination — suits your build type and budget.

Why Choose a Local Lowestoft Specialist

We’re based in East Anglia and have been working across Norfolk and Suffolk since 2008. Choosing a local firm means faster response times, knowledge of local building stock, and straightforward aftercare. Our insulation materials are stocked and supplied through Eastern Insulation Supplies, our dedicated supplies division, so we control quality and availability from start to finish.

As East Anglia’s largest and most-reviewed floor screeding company, we bring the same standards of workmanship to our insulation services — precise installation, minimal disruption, and clear communication throughout.

Areas Around Lowestoft We Cover

From our East Anglian base, we cover Lowestoft and the wider region, including:

Great Yarmouth and Gorleston-on-Sea
Beccles, Bungay and the Waveney Valley
Norwich and surrounding villages
Ipswich, Bury St Edmunds, Thetford and King’s Lynn
Coastal and rural properties across Norfolk and Suffolk

For a full overview of our insulation services across these areas, visit our main blown bead and loft roll insulation page.

Frequently Asked Questions

Is blown bead insulation suitable for older properties in Lowestoft?

Blown bead works well in most cavity wall constructions. Many post-war and 1960s–1980s homes in areas like Pakefield, Carlton Colville and Oulton Broad have unfilled or partially filled cavities that are ideal candidates. We carry out a pre-installation survey to check cavity width, wall condition and ventilation before recommending the right approach.

How much loft insulation do I need?

The recommended depth is 270mm. If your existing loft roll is 100mm or less — common in properties that haven’t been upgraded since the 1980s — topping up to the full depth is one of the most cost-effective energy improvements you can make.

Can you supply insulation materials only?

Yes. Through Eastern Insulation Supplies we can supply loft rolls, blown bead, and other insulation products to trade customers and homeowners across Norfolk and Suffolk.

If you’re considering insulation for your Lowestoft property, get in touch with our team for a no-obligation assessment and quote. Call us or use the contact form on our contact page — we’re happy to talk through your options.

Blown Bead & Loft Roll Insulation — Lowestoft, Norfolk

Read what our customers had to say

    
 
 
         
   S Pearson 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great service, professional and reliable each time we use them.
  
 
        
   A Thompson 
 
 
 
 Trustindex verifies that the original source of the review is Google. The team did a professional and courteous job for over 100m2 with insulation. Helpful advice, efficient measures, laying out was done with attention to detail. Pouring was prompt and careful. The skip liner was much appreciated. The levels were perfect for our doors. Helpful advice and ensured we’re satisfied with the results. Thank you and well done. 👍🏻
  
 
        
   M Boby 
 
 
 
 Trustindex verifies that the original source of the review is Google. Co-Dunkall ltd recently laid a floor screed for a new gymnasium floor.Very pleased with the service they provided throughout the process.Hard working team that kept me informed of deliveries to site and left the site spotless .Client super impressed with the floor finish .
  
 
        
   O V 
 
 
 
 Trustindex verifies that the original source of the review is Google. I did screed with them twice, we had our house done in 2 phases and in the 1st phase they supplied us with specific stats, on the 2nd phase they supplied us with different stats model and a control box which allows to connect to them remotely but, then I had an issue with the phase 1 stats won't connect to the system as they don't support that functionality. I rang their customer support and explained the issue, they offered to swap the phase 1 stats with new ones so, all stats will be from the same model and all will connect to the control box.
One more word about their expertise, the 2 phases were done a part so the 1st phase screed was higher than the existing old bit, when they came to do the old bit on the 2nd phase, I asked if they can do the screed so that both bits will be same height, they did it perfectly, both phases met up level and the wood floor on top is at the same height, I must say I was sceptic but, these guys are awesome, they are experts in what they do. that made me so happy!
That is a company who cares about their business and about their customers.
I will definitely recommend and will definitely do business with them again.
Thanks you Co-Dunkell
  
 
        
   P W 
 
 
 
 Trustindex verifies that the original source of the review is Google. We had our screed pumped in and laid by the team at Co-Dunkall today at our self-build, the three man team onsite and those in the office were all professional and friendly at all stages from quotation, survey and the final delivery and instation. Everyone has done what they said they would do and within the timescale given. If you need pumped floor screed I can recomend this company 100%
  
 
        
   H Campbell 
 
 
 
 Trustindex verifies that the original source of the review is Google. Very good service. Nicky and Adrian super helpful to see the job through! 5 star. Screed is silky smooth
  
 
        
   M Brooks 
 
 
 
 Trustindex verifies that the original source of the review is Google. Complete bungalow floor screeded by these guys.
Bob who surveyed the project and supervised the screed being laid is a credit to the company. No more than 1mm difference in levels throughout !
  
 
        
   S smith 
 
 
 
 Trustindex verifies that the original source of the review is Google. We had Co-dunkall provide a cemfloor screed for an outbuilding which needed the floor raising. Thoroughly professional service 3 survey calls and inspections prior to the job. Nikki and the office team all highly knowledgable on so many aspects and on the day they even provided a 6 wheel mini mix to accommodate the property complexities. Good follow up and so pleased for a  very clean and tidy washout considering how messy the job can be. You would not know they had been on site. End result is exactly what we needed
  
 
        
   L Bailey 
 
 
 
 Trustindex verifies that the original source of the review is Google. Excellent job and Excellent service.
Had 100% confidence in them.
Can't fault them.
They are very professional and they have a lovely approach to customer service.

We have used Co Dunkall on any occasions and will do so in the future.

Would highly recommend.

Thank you very much from the Bailey's.
  
 
  
 
  
 
   Google rating score: 4.8 of 5, based on 53 reviews

For a quote or any general questions and enquiries please get in touch with our team