March 17, 2016 Courses No Comments

Join us on this 3-day course and learn everything you need to know to construct a Rocket Mass Heater from start to finish using recycled and easily sourced materials. The design utilises a clay cob finish and the preparation and application of cob as a building material will be covered in detail on the course. The Rocket Mass Heater Stove is an affordable and open source technology that everyone can access, empowering us to take more control of our own domestic heating solutions. Read more here.




April 27th – 29th, 2018 Coed Talylan Cost: The cost of the course is banded on the basis of income and includes food, accommodation and materials:

  • Up to 14K/year £150*
  • 14K-20K/year £200
  • 20K upwards £250

*we accept payments by installment.

Who is this course for?

This 3-day course is for anyone interested in learning how to apply this accessible technology as a way to heat their home more affordably and efficiently. If you want to find out more about how rocket stoves could be used in your home then this course, set alongside the managed woodlands at Coed Talylan is an excellent opportunity to see first hand not only how to build a mass heater in its entirety but also how sourcing coppice fire wood to heat your home is a sensible and sustainable alternative to other more conventional domestic heating solutions.

What will the Rocket Mass Heater course cover?

  • Rocket stove design specifications and theory
  • Combustion and thermal mass theory
  • The essential materials, how to source and process them
  • Laying out of the mass heater
  • Building the burn chamber and the thermal battery
  • Using cob for the thermal mass
  • Using natural materials for rendering/finish

Learning methods and outcomes

We will work as a group and construct this fine example of a rocket mass heater which will heat our a farmed cabin building and as such be used as an example of this sustainable energy generation system. We will be able to light it and experience it in action. The course will give you an introduction to the world of mass heaters, and perhaps be a jump start to explore mass heaters and rocket stoves in more depth.

Course Instructor

Sara Tommerup: Sara is a trained natural builder and has built many rocket stoves along the way. Although there are many ways of heating your home, the rocket stove has a special place in her heart. Sara learned to build the rocket stove from its inventor, Ianto Evans.


Coed Talylan is a 70 acre woodland on the western edge of the Brecon Beacons. Nestled below the iron age hill fort of Garn Goch in the foothills of the Black Mountain it offers a secluded and peaceful location for our course participants to learn and explore the potential of applying agroecology within a co-sufficient community settlement.

Accommodation is available for camping around our guest lodge, an A-frame wooden cabin with kitchen and dining/living space. We have running filtered spring water throughout the site, compost toilets and wash facilities.

We will email directions when you sign up to a course.


We endeavour to make our courses and events affordable to all. Unfortunately, we do not receive any external funding and rely on large amounts of voluntary input. Concessions are available for pensioners, unemployed and full-time students only.

See the Coed Talylan Terms and Conditions

Booking and Paying for your place

To book a place on the course contact us for a booking form. Please note that we ask for a 25% non refundable deposit to secure your place on the course.

Written by admin