Working With Architect-Specified Paint Finishes in London
How London decorators work with architect-specified paint finishes: reading specs, approved substitutions, preparing sample panels, and signing off finishes.
Working With Architect-Specified Paint Finishes in London
When a project has gone through a full architectural specification — whether it is a high-end residential refurbishment, a new build, or the redecoration of a commercial or hospitality space — the decorator steps into a process that is considerably more formal than a typical domestic project. The architect has specified not just colours but products, finishes, application methods, and sometimes the sequence of coats. Understanding how to read and execute that specification, how to raise legitimate queries about it, and when and how to propose substitutions is a core skill for any decorator working at the top of the London market.
Reading a Paint Specification
A full paint specification does more than list paint colours. It will typically identify the product by manufacturer and product name, specify the number of coats, define the sheen level, describe the required preparation standard, and sometimes reference a relevant British Standard (BS EN ISO 12944 for protective coatings on steel, for example, or the relevant section of BS 8000 for workmanship standards on painting).
Reading a specification requires understanding what each line is actually asking for and whether there is any ambiguity. Common sources of confusion include: finish descriptions that refer to an older product that has since been reformulated, references to products that are not available in the specified colour, or preparation standards described in general terms that could be interpreted several ways. When we encounter any of these, we raise a formal query (RFI — Request for Information) before work begins rather than making an assumption on site that turns out to be wrong.
It is also worth reading the specification in conjunction with the drawings. Architects often define finish zones on annotated floor plans or elevation drawings, and cross-referencing these with the written specification clarifies exactly which product goes where — particularly important in complex interiors where multiple paint types and colours meet at junctions.
Approved Substitutions
Specifications are written before work begins, and the paint market is not static. Products are reformulated, discontinued, and replaced regularly enough that a specification written even eighteen months before project start may include products that no longer exist in the form described. When this happens, the correct process is to propose a substitution to the architect for approval, not to simply swap to the nearest available alternative without notification.
A substitution proposal should include: the originally specified product and its key performance characteristics, the proposed substitute, evidence that the substitute meets or exceeds those characteristics, and any differences in application method or preparation requirements. The architect will review and either approve the substitution or specify an alternative. This process protects both the decorator and the client: if the substitute performs less well than expected, it cannot later be argued that the decorator made an unauthorised change.
Sample Panels: What They Are and Why They Matter
On architect-led projects, particularly those involving decorative finishes, textured coatings, or specific paint techniques, sample panels are a standard requirement before full application proceeds. A sample panel is an area of the actual substrate in the actual location — or a purpose-prepared board of the same material — finished to the full specification as it will be applied on the complete project.
Sample panels serve several functions. They confirm that the product behaves as expected on the specific substrate in the specific conditions of the project. They give the architect and client a definitive reference point for the required standard. And they provide the decorator with a confirmed, approved benchmark that protects against disputes about quality later in the project.
The size and location of sample panels is usually defined by the architect. On interior projects, a one-square-metre panel in an inconspicuous location is common. On exterior projects, panels might be larger and might need to weather for a period before sign-off, particularly if the architect wants to assess colour stability over time.
Signing Off Finishes
On an architect-specified project, the decorator does not determine when a finish is acceptable — the architect does. The sign-off process is usually sequential: complete a defined area, notify the architect that it is ready for inspection, carry out any remedial work identified at inspection, and then obtain written confirmation that the finish is approved before moving on.
This process requires patience and good record-keeping. We maintain a log of all inspection requests, inspection outcomes, and approvals on architect-led projects, and we ensure that no new area is commenced until preceding areas have been formally signed off. This discipline takes more time in the short term but prevents the scenario where a defect identified late in the project requires remediation across large areas of previously completed work.
Working within a full architectural specification is one of the most professionally demanding things a decorator does. When it goes well — when the specification is clear, the samples are approved without drama, and the sign-offs proceed in sequence — it is also one of the most satisfying.