Material guides
A clearer view
of the materials.
Practical reading from John Martin. Understand the options, ask useful questions and plan the right work for your building.
Field notes · Materials
Cork spray and spray foam: different jobs, different systems.
Understand the differences between cork spray coatings and expanding spray foam. John Martin explains what to ask before choosing a system for your home.
Read the guide
Field notes · Planning your project
What shapes a cork spray quote?
Wall condition, access, preparation and finish all shape a cork spray quote. John Martin explains what to discuss, with no generic estimates or figures.
Read the guide