SPECIFICATION GENERATOR
Find out which low impact materials are right for your building project.
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Our Approach
We don't just sell materials — we help you get the build right
Back to Earth works differently from a typical builders' merchant. Natural and low-impact materials only perform when they're correctly specified and installed — so we work with you through design, detailing and installation.
This is why you won't find a simple "add to basket" on our site. Every project is different, and every specification should be too.
Learn more about us
Step 01
Consultation
We start by understanding your project — the building type, construction, budget, and goals. Whether by phone, email, or in person, this conversation shapes everything that follows.
Step 02
Specification
We produce a bespoke specification matched to your project — with U-value calculations, moisture risk analysis, and layer-by-layer build-ups you can hand straight to your builder or architect.
Step 03
Supply Materials
We supply everything you need — the right products, in the right quantities, delivered to site. We work with a carefully selected range of manufacturers whose materials we know and trust.
Step 04
Support
We stay available throughout the build. Questions on site, installation details, unexpected changes — just ask. The Learning Lab is also here for installers and self-builders who want to go deeper.
Free Tool
Specification Generator
Over 200 free sustainable building specifications, each tailored to your exact element, construction type, and project goals.
200+
Specifications in the database
Free
No login or sign-up
required
required
30yrs
Of building knowledge behind it
How it works
1
Choose your building element
Which part of your building are you working on? Click below to jump straight in.
2
Answer a few questions
A few quick questions about your construction type, target U-value, and requirements.
3
Get your exact specification
A complete layer-by-layer build-up with U-value and product details — ready to hand to your builder or architect.
Browse by category
Sustainable Building Materials
Products
Knowledge & Guidance
Design & Build with Wood Fibre — The Learning Lab
Back to Earth's Learning Lab is our free resource for designers, installers, specifiers, and self-builders. Explore guides, videos, case studies, and technical articles — all built from 30 years of hands-on building knowledge.
Explore the Learning Lab
Browse by topic
Go to the Learning Lab
Planning & Design
Specifications, U-value targets, condensation risk — everything you need before the build starts.
Browse guides
Building & Installation
Step-by-step how-to guides and installation resources for when the work is underway.
Browse guides
Understanding Performance
The data, testing, and real-world evidence behind why these materials perform.
Browse guides
Our Manufacturer Partners
