Copyright © 2007-2018 Cobalt Carbon Free.

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We believe our customer’s testimonials are the perfect way to show potential clients the quality of work that we provide, free from any marketing message or anything else skewed in our favour.
We’re proud to show the work we have completed and customer’s opinion because we think it speaks for itself.



Insert DampSmart Before

Before - Penetrating Damp on external walls and render

Insert DampSmart After

After - Removal of damp on external walls and Rerendered, reducing the chances of damp returning in the future and preventing further structural damage.

Insert Customer Testimonial

We initially went ahead with just some of the walls, and then decided it looked so good that we would do the whole building. The product is impressive, and it was applied and finished incredibly well. They did an excellent job structurally and cosmetically. The finish is self-cleaning and two years later it still looks good.


Insert HeatSmart Before

Before -

Uninsulated Period Victorian Property with dated brickwork on gable end wall.

Insert HeatSmart After

After -

External birch wood cladding used to renovate and insulate the external of the property and garage.

Insert Customer Testimonial

Cobalt did a good job, as promised and on budget. They knew what they were doing and got on with it, and the end result looks good too.​


Insert HomeSmart Before

Insert HomeSmart After

Insert Customer Testimonial

I was very pleased with the workmanship – everything was on time, on schedule and done very professionally. I was very pleased with the final job – it has certainly made the house a lot warmer.


Insert SystemSmart Before

Before - Dirty and dated render on external walls

Insert SystemSmart After

After - Clean, Re-Rendered external walls.

This helped stop the further spread of damp created a refreshed, modern look on the exterior of the house

Insert Customer Testimonial

We had a great experience with Mike and the team. We were comfortable that everyone we dealt with was professional, friendly and would keep us updated. The job was done well and on time. Would definitely recommend.