About Us

introduction to Sisaltech

We produce sustainable building insulation made from sisal and wool. Our small but growing company is passionate about a low-carbon future and how our technical insulation can help to make a better world.

Company Values

For buildings to be energy efficient and made from sustainable, low-carbon materials.

We create innovative, technical, natural fibre insulation products to enable an easy switch to low carbon building materials while offering increased safety and comfort to installers.

Our purpose is to help tackle the climate emergency.


In the late 2000’s, John Ferguson was working to upskill small-scale farmers in East Africa around climate change mitigation.

During this work he became familiar with the unique and highly drought resistant fibre crop, sisal. Used for centuries in rope making, sacks and geo-textiles sisal was a plant that many in the construction industry had forgotten about… until now.

Fast forward a few years and we now produce one of the lowest carbon, highest-quality sustainable thermal insulation products on the market.

Key staff

John Ferguson (Founder & CEO)

Passionate about tackling the climate emergency with practical solutions; John founded Sisaltech to make better building materials. His experience in sisal supply chain and innovative manufacturing gives our company a crucial edge. John's leadership and commitment to genuine sustainability inspires us all.

Gavin Moore (Sales Representitive)

Greetings! I'm Gavin, your dedicated Sales Representative at Siselwool. With a deep understanding of our premium insulation products and a passion for helping customers find the perfect solution for their needs, I'm here to guide you every step of the way. Whether you're embarking on a new construction project, renovating your home, or looking to improve energy efficiency, I'm committed to providing you with expert advice and tailored recommendations. Your comfort and satisfaction are my top priorities, so don't hesitate to reach out—I'm here to ensure your Siselwool experience is nothing short of exceptional. Welcome to Siselwool, where your home's insulation needs meet personalised, attentive service!

Jamie Wilson (Marketing)

Hello, I'm Jamie, the Marketing Manager here at Siselwool. With a passion for innovative solutions and a dedication to sustainable living, I lead our marketing efforts to showcase the exceptional benefits of Siselwool's eco-friendly insulation products. I believe that small changes can make a big impact, and I'm committed to helping you discover how Siselwool can transform your home into an energy-efficient, cozy haven. Feel free to reach out if you have any questions or if there's anything I can assist you with on your journey to a more sustainable and comfortable living space. Welcome to Siselwool!

What is sisal? Learn more here.

Want to find out more?

Introduction to Sisaltech

John Ferguson, Founder & CEO

The construction industry produces a shocking amount of waste. Construction, demolition and excavation accounted for 62% of the UK’s total waste in 2018 and this must change urgently.

Sisaltech creates innovative construction insulation that is easy to switch to, sustainable by nature and completely recyclable.