Establish what the surface is telling you
Record cracking, staining, loose paint, powdering and previous patch repairs before choosing a finish. These are observations requiring explanation, not a diagnosis based on appearance alone. If a problem suggests moisture or movement, agree the appropriate investigation and repair before decoration covers it. Identify which surfaces are sound enough for preparation and which need further assessment. A written condition record helps keep the decorative scope separate from unresolved building defects, so neither is mistaken for the other during the work.
In an older room, look for changes in materials and earlier repairs. A wall may include several different substrates beneath an apparently uniform coat. The decorator's preparation and product choices should reflect what is found. Avoid assuming that the same treatment can be applied to every surface merely because they will finish in one colour.
Define the extent of preparation
Agree what is to be cleaned, rubbed down, repaired or removed, and which edges and details need particular care. State how loose material will be dealt with and what condition the substrate must reach before finishing. Review the manufacturer's instructions for the proposed products against that surface. Where compatibility is uncertain, a test area can inform the specification before the treatment is extended. Preparation should have an agreed standard rather than being represented only by the number of finish coats.
Clarify how patch repairs will blend with the surrounding texture. A perfectly smooth patch in a visibly textured wall can remain conspicuous after painting, while repeated filling may obscure a moulding. Decide whether the aim is a consistent renewed surface or the careful retention of an existing one. Those are different instructions, and the distinction matters particularly around repaired plaster and retained decorative features.
Treat retained timber as a working component
Doors, shutters and other opening elements must continue to operate after finishing. Check hinges, clearances and existing paint build-up before specifying preparation. Remove or protect hardware deliberately and record where it belongs. A neat coating should not bridge moving joints, obstruct a ventilation opening or conceal a fitting that needs access. Where repairs are necessary, arrange them before the decorative finish and identify the repair areas in the scope.
The council records Georgian housing around Northampton Square. In such a house, assess retained room details individually rather than assuming that a fresh decorative scheme requires their replacement.
Agree which parts are painted in place and which may be removed for treatment. Label removable items and protect surrounding finishes during their return. Inspect operation afterwards, including the point at which a door closes and any edge that could rub against newly finished timber.
Decide colour and sheen in the actual light
Use samples large enough to judge on the intended surface and view them at different positions within the room. A colour can appear different beside a window, within an alcove and under artificial light. Test it beside flooring and fixed furniture that will remain. Sheen changes reflection and can make surface variation more visible, so choose it with the room's condition and use in mind. Record the product and finish as well as the colour name to make the specification reproducible.
Consider how adjacent spaces meet. A doorway reveals more than one room at once, while a stair connects several wall planes under changing light. Decide where colours stop and how the edge is formed. A simple scheme benefits from equally deliberate treatment of ceilings, frames and skirtings. These transitions should be settled before masking and finishing begin, avoiding contradictory instructions at shared edges.
Separate external decisions from internal decoration
Painting a cupboard, renewing a room's wall finish and changing the exterior of a building are not interchangeable tasks. Identify the external items separately, including the current substrate and intended change. Resolve any applicable designation or consent question before preparation begins. If access equipment is needed, plan its position and protective measures with the relevant people rather than assuming an internal decorating scope also authorises external access.
Islington's guidance includes conservation-related Article 4 directions as well as change-of-use controls. Check the particular direction and proposed exterior treatment; its existence does not establish one rule for every painted surface in Clerkenwell.
An exterior defect may also require a repair beyond the decorative work. Record the finding and obtain appropriate advice rather than using a coating to conceal it. The finish specification should follow the agreed repair and compatible preparation.
Sources: Islington permitted development and Article 4 directions
Protect the home and review finish quality
List the fittings, furniture and surfaces that remain and agree how they will be protected or moved. Explain access to working rooms and where materials will be kept. Do not assume that every room can stay available during preparation. Maintain protection as work progresses, especially around floor edges and frequently used routes. At the end, remove coverings carefully and check the surfaces they protected rather than judging only the newly painted area.
Review the finished work under normal room lighting and against the agreed sample. Look at edges, coverage, texture and the junctions around hardware. Confirm that openings and removable panels operate properly. Identify corrections by location and required action, and keep the product record for later maintenance. A small quantity of correctly labelled touch-up material, where available, is more useful than an unidentified tin whose finish cannot be matched to the room.
Before work begins
Painting & decorating in Clerkenwell: questions
How should a decorative scheme be chosen for a Northampton Square house?
Begin with the individual building's finishes and retained fabric; its apparent age alone does not determine the specification. Check any relevant controls before altering significant decoration or external surfaces. For new colour decisions, compare samples in the actual lighting and beside materials that will remain. A general period palette is a reference to discuss, not evidence of what is appropriate for this room.
Can I assume external repainting is unrestricted in Clerkenwell?
Islington publishes mapped conservation-related Article 4 directions. Check whether the actual property and proposed work are affected before changing the exterior. Describe the current material and intended finish clearly when seeking advice. A conclusion concerning an internal wall or a different address does not establish the position for your external brickwork, joinery or other surface.
Will new paint hide cracks permanently?
Paint does not establish or remedy the cause of a crack. Record the defect and determine whether investigation or repair is needed before specifying preparation. The response depends on the substrate and condition found. Where a movement issue remains unresolved, do not treat a cosmetic finish as confirmation that the underlying problem has been dealt with.
How should I compare paint samples?
Use the proposed finish on a representative surface and view it near retained flooring, cabinetry and textiles. Check daylight and the intended artificial lighting. Record the exact product so that a colour name is not confused with a different sheen or formulation. Agreeing the sample in context provides a much better reference than choosing from an isolated digital image.
What belongs in the decorating completion check?
Inspect coverage, edges and texture under the room's normal lighting, using the agreed sample and preparation standard as references. Test doors and shutters and check that hardware and access panels remain usable. Confirm removal of protective materials and note any required correction precisely. Retain the product information so future maintenance can use a known and compatible finish.
Official sources
Northampton Square conservation design guidelines · Islington permitted development and Article 4 directions
Checked 4 November 2026. Maps, list entries and directions must be checked for the individual property and proposed work.