Cobalt Carbon Free

Welcome to Cobalt Carbon Free! We specialize in low-carbon, eco-friendly wall insulation, roof/basement insulation, damp-proofing, and conversions/extensions. We are proud to provide exceptional quality service, systems, and results. Whether this is a step-by-step (or room-by-room!) approach, or the full refurbishment of a property - we are all ears. We care about the environment and we care about helping our customers build a warm, sustainable home they can be proud of.


  • 1.Damp Proofing Specialist
  • 2.Insulation Installer
  • 3.Loft Conversion Specialist
  • 4.Conversion Specialist
  • 5.Restoration & Refurb Specialist
  • 6.Plasterer

About Cobalt Carbon Free

Our customers are looking to modify and improve their homes in some way and we know this will involve walls, floors, roofs, lofts, and basements. Whether this is a step-by-step approach or they want to carry out a full refurbishment of the property. We organise our business around our customers’ needs and not the other way around.

We love to get our teeth into a good home building project, be it a loft-conversion, waterproofing and damp-proofing scheme- including cellar and basement conversions, or designing & constructing a new extension, as well as refurbishing existing areas of the house.

We use a variety of technologies, from the latest thermal insulations, to damp-injection treatments, to cutting-edge plumbing & ventilation systems- ensuring you that a Cobalt build is always low-carbon, energy efficient, good value for money, and above all looks fantastic!

Our customers share our sense of conscience and values, recognising loyalty; quality, reliability and trust, reflected in our long term guarantees.

Our team has the skills to design, plan, engineer, and build any home project that comes our way and the conscience to see it through to the end every time.

We operate primarily in the Midlands region - Nottingham in particular as it is where we are based, but we have completed numerous projects nationwide.


We are Stroma Certified & Accredited Domestic Energy Assessors.
Stroma Certification Number: STRI14497.

We are Green Deal Accredited Installers for the following types of insulation: Loft, Pitched Roof, Flat Roof, External Wall, Internal Wall, Hybrid Wall, &
Floor Insulation.

Our Staff are DBS (formerly CRB) checked & fully trained in Health & Safety, assessed to a (NOS) National Occupational Standard, and qualified to a minimum NVQ2 in their chosen trade.

We are proud to be Investors in the Environment and a member of the Energy Saving Trust.

Nominated for My Builder’s ‘Ground Floor Damp Walls - Job of the Year 2018’.

We are CITB registered & in scope.


Public Liability Insurance

Limit of indemnity: £5,000,000.00
Valid until: 14th Jun 2019

Ask a tradesman

Cobalt Carbon Free has answered 1 question on Ask a Tradesman.