Likely cause
A weak layer, contamination or poor adhesion beneath the visible coating.
The Craft Lab · preparation made visible
The finish begins
before the tin opens.
Ten interactive studies make the decisions beneath a professional finish visible, from diagnosing failure and testing compatibility to protecting an occupied home.
Interactive material study · timber window
See what paint cannot hide.
Start with the shortcut, then move through the preparation sequence. Each stage explains what changes, and why it matters.
Shortcut: failure remains
01 / 05
One finishing coat over an unsound surface
Paint over the problem
It looks covered from a distance, but failed paint, open joints and soft timber remain underneath. The new coating has nothing reliable to hold on to.
Likely result: early cracking, trapped moisture and repeat failure.
02 / 10
Substrate diagnostic
The symptom is not the cause.
Choose what you can see. The important work is deciding what sits behind it.
Investigate
Test beyond the loose edge, identify every coating layer and check whether the substrate is sound.
Why paint fails
New paint bonds to the failing layer, so old and new coatings release together.
03 / 10
Beneath the finish
Pull the finish apart, layer by layer.
Move the control to reveal the work held beneath a completed surface.
Finish coatsColour, cleanability and final appearance.
UndercoatBuild, opacity and an even base where the system requires it.
PrimerAdhesion, sealed porosity and compatibility.
Sanded repairFlush edges and refined profiles without ridges.
Filler / repairLocal defects corrected rather than buried.
Sound substrateThe stable surface every later layer depends upon.
1 of 6 layers revealed
Finish coats
Colour, cleanability and final appearance.
04 / 10
Finish selector
Sheen changes more than appearance.
Compare the practical differences, then judge each finish in context.
Walls
Durable matt
- Sheen
- Low
- Resilience
- High
- Local repairs
- Variable by colour and light
- Best suited
- Hallways, living spaces and family rooms
Watch: Still needs a sound, even substrate; durable does not mean indestructible.
05 / 10
Colour under light
One colour. Three different readings.
Change the light and watch the undertone move. This is why we test in the actual room.
Current condition
North daylight
Cool, indirect light can draw blue and grey undertones forward and make warm neutrals feel quieter.
Use the screen for an initial idea, then check painted samples on more than one wall, at different times of day and beside the flooring and furniture that will stay.
06 / 10
Protection planner
The room is prepared before the surface.
Select each zone to see how an occupied home is kept usable and protected.
Fitted protection selected for the floor type, taped without damaging the finish and checked through the project.
07 / 10
Defect hotspot survey
Survey the room before specifying the paint.
Five small clues can change the preparation, programme and products required.
Your survey
Find the five defects.
Select a numbered hotspot to reveal what should be checked before work begins.
08 / 10
Exterior weather test
The same weather. A different outcome.
Compare coating first with checking, repairing and priming first.
Paint over the problem
Paint before checking.
A fresh film may look complete initially, while moisture and open defects continue to work beneath it.
Moisture reading
Coating damp timber can trap water and undermine adhesion from beneath.
Open joints
Water paths are repaired with a method suited to movement and exposure.
Bare edges
Exposed end grain and local repairs receive the correct primer before build coats.
Forecast window
Temperature, rain, dew point and drying time all affect when exterior work is viable.
09 / 10
Kitchen repainting workshop
A kitchen is a system of parts.
Step through the controlled sequence behind a durable cabinet finish.
Stage 1 of 6
10 / 10
Material compatibility lab
A good product can still be the wrong product.
Pair an existing surface with a proposed coating to expose the checks between them.
Assessment
Often suitable
Clean, test adhesion, abrade sheen and repair defects before recoating.
Required checks: Crosshatch adhesion test · contamination check
This laboratory explains specification logic; it is not a substitute for inspecting the actual substrate or following the coating manufacturer’s current technical data.
Diagnosis before decoration
Not every defect should be filled and painted.
Moisture first
Persistent moisture, failed seals and water paths need to be understood before a coating system is chosen.
Soundness first
Loose paint and soft timber are removed far enough to find a sound edge, not feathered into failure.
Compatibility first
Primer and finish must suit the timber, retained coating, exposure and intended maintenance cycle.
Replacement when needed
Where decay is structural or too extensive for a durable local repair, joinery advice or replacement may be the honest answer.
Your property decides the system