Cooperation principles
We first clarify specialisation, regions and examples that may be verified. A listing is not a quality guarantee; a recommendation requires separate approval. Commercial placement does not replace technical assessment.
ZeroHouse
Suppliers
ZeroHouse Network: suppliers.
Start procurement from a specification
A supplier provides materials or equipment, but suitability for a junction follows the design requirements. Product designation, properties, dimensions and accessories need to match the order. Similar names do not make products interchangeable. For insulation, membranes or fixings, intended use conditions matter more than a broad marketing description such as “for energy-efficient houses”.
Track documents, batches and storage
Request current technical documentation and a way to identify the delivered batch. Check how transport, moisture, sunlight or temperature can affect the product before installation. Damaged packaging needs assessment in the context of the material. For a complete system, replacing one component must not compromise compatibility. Warehouse availability is not a technical justification for a substitution that changes the specified assembly.
Agree the delivery obligations
Define supplied items, availability confirmation, acceptance, documents and the response to nonconforming goods. If the supplier also installs, separate those duties from logistics. A Network entry does not validate the participant's entire product range. A profile needs sources supporting stated functions; your purchase needs comparison of the actual specification with the current offer and the designer's agreement. Retaining that distinction helps trace an unexpected product change before it becomes concealed work.
Identify substitutions
If an alternative is proposed, request its exact designation and documents before approval. “Equivalent” alone cannot be checked. Keep the order, delivery record and actual product traceable so differences can be found before installation.