Glossary
Substrate
The base material you are fixing into, such as timber, plasterboard, brick or concrete.
Plain-English definition
The base material you are fixing into, such as timber, plasterboard, brick or concrete.
Why it matters
This term helps you read product labels, follow instructions and decide whether a material or fixing suits a general DIY job.
Common mistake
A common mistake is treating the term as a promise that something is strong enough for every use. Always check the exact product and avoid safety-critical assumptions.