Ewi Specialist Ltd

External wall insulation and rendering services.Loft insulation. We are London based company run by Sebastian & Sebastian. Each and everyone in our experienced team has over 10 years of experience in external wall insulation and rendering services. For us it's all about quality and about lasting relationships built on trust. We pride ourselves on our high quality of workmanship and this is what we offer to our clients.


  1. Insulation

About Ewi Specialist Ltd

External/Solid wall insulation
Rendering services
Loft insulation
Internal wall insulation


Qualified and approved installer of External wall insulation system of Ewipro system.
Recommended by K Rend

Latest reviews

  • Install External Exterior Wall Insulation

    Seb and co performed a great job for me. They were punctual and efficient. Very tidy workers. Highly recommended

  • Rendering of a detached house

    One of the best tradesman I come across. Very professional, best price and admirable quality job. We formed a good working relations and look forward to work with him again.

  • Rendering Front of Edwardian House

    Sebastian and his team have done a lovely job of the house, I’m now proud to look at it again! Some inevitable delay due to the rain stopping works and a small delay in getting the scaffolding removed when the job was finished, but overall I’m very happy. Lovely people to deal with and a professional job done.

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