County Life
A premium house builder specialising in small developments, Karnheath has had the pleasure of working with County Life on several new build projects including Brunton
Client · County Life
About from company website
Karnheath Ltd is a family-run specialist insulation contractor with over 40 years of experience, operating throughout the North East, Cumbria, Yorkshire, and the Scottish Borders. Founded in 1978, the company is dedicated to keeping properties warm, energy-efficient, and saving clients money. They offer a range of services including the supply and installation of loft and cavity wall insulation to domestic, commercial, and new build properties.
Beyond new installations, Karnheath Ltd also provides cavity wall extraction services for defective insulation and offers loft boarding for additional storage. They work with government initiative schemes and local councils, providing advice on low-cost energy services. Their mission is to reduce carbon emissions and help clients save on fuel bills, contributing to a greener planet.
The company prides itself on its extensive experience, commitment to high-level customer service, and technical know-how, evidenced by accreditations such as Trustmark and CHAS verification. They offer free, no-obligation surveys and aim for a quick turnaround time on works, operating multiple teams across the region.
Services
Works as
Sectors
Project experience from company website
Gleesons
A well-established house builder throughout the country, we have supplied and fitted loft and cavity wall insulation on sites in Sunderland and Ashington
Client · Gleesons
Ascent Homes
An award-winning housebuilder in the North East, Karnheath is appointed as the principal insulation contractor on the Ellington site in Northumberland.
Client · Ascent Homes
Engie
A large, nationwide energy and regeneration company has contracted Karnheath to insulate loft and cavity wall insulation to various new build housing developments in Tyne
Client · Engie
Galliford Try
A large nationwide construction business that contracted Karnheath for loft insulation on various projects including the new build Army Barracks at Catterick Garrison.
Client · Galliford Try
STP Construction
As a building and civil engineering contractor here in the North East, Karnheath has supplied cavity wall insulation to various projects including the Tyne Tunnel
Client · STP Construction
Accreditations from company website
- TrustMark
- CHAS
- BBA
- CIGA
- Checkatrade
Clients mentioned from company website
County Life, Gleesons, Ascent Homes, Engie, Galliford Try, STP Construction.
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Questions about Karnheath Ltd from the record on this page
What does Karnheath Ltd do?
Karnheath Ltd are a family run provider of insulation services operating throughout the North East dedicated to keeping your properties warm, energy efficient and best of all saving you money. Their listed services include Insulation and Damp proofing.
Where is Karnheath Ltd based?
Karnheath Ltd is registered at 4 Boyd Street, Shieldfield, Newcastle Upon Tyne, NE2 1AP, in North East.
What areas does Karnheath Ltd cover?
Karnheath Ltd states that it works across North East, Cumbria, Yorkshire and Scottish Borders.
How many people work at Karnheath Ltd?
Accounts filed for the year to 2025 report 14 employees, which places the company in the 10-49 employees band.
What is Karnheath Ltd's turnover?
Karnheath Ltd does not disclose turnover: UK small-company accounts are not required to. Based on headcount and trade debtors in its filed accounts, turnover is likely to fall between £750k and £2.0m. This is an estimate, not a filed figure.
Is Karnheath Ltd still trading?
Companies House lists Karnheath Ltd as active, with accounts most recently made up to 2025-09-30.
What accreditations does Karnheath Ltd hold?
Karnheath Ltd displays TrustMark, CHAS, BBA, CIGA and Checkatrade on its website.
What sectors does Karnheath Ltd work in?
Karnheath Ltd works in Residential and Commercial.
When was Karnheath Ltd established?
Karnheath Ltd was incorporated on 1978-08-04.