Your first room
A good place to begin. Work through the basics in order.
The Education Room · freely shared
Good work starts
with understanding.
The right sandpaper. The right paint. The reason behind each step. Practical decorating knowledge for anyone who wants to do a better job.
Read or listen, in your own time. Every guide has a gentle audio version, and all of it is freely shared. No account, email address or purchase required.
The knowledge library
What are you working on?
Tools, guides and references in one place. Start with a question or choose a subject.
6 results in Paint problems
- Tool
Photo diagnosis
Use a photograph for an initial suggestion, not a survey.
- Reference
Defects encyclopaedia
Compare symptoms, possible causes and the order of repair.
- Reference
Paint myths
Common painting claims, with the practical reasons behind the advice.
- Reference
Paint science
Understand adhesion, curing and why a coating fails.
- Guide
Damp or condensation? Pause before painting
Recognise the limits of a visual check and deal with moisture before it returns through a new finish.
- Guide
Peeling, flashing and other paint problems
Work backwards from the symptom instead of trying to bury it beneath another coat.
The guide library · 27 guides · read or listen
Learn the job,
in order.
Six chapters, in the order a job actually happens. Start with a question, or read straight through like a book.
Showing 27 of 27 guides.
Chapter 1: Getting started
Before the lid comes off. What to buy, what to check and how to work safely.
9 guides
- 01How long does decorating really takeHonest timelines for a bedroom, a hall and stairwell, a whole flat and an exterior, with the drying times between coats that Fife humidity actually allows.Start here4 min
- 02Preparing your home for the decoratorsWhat to move, what we move, what to do about pets, parking and keys, what is normal in terms of noise and smell, and when you can sleep in the room again.Start here4 min
- 03How often things really need repaintingRealistic repaint intervals for each surface, and the annual ten minute walk round that doubles the life of exterior work.Start here4 min
- 04How to read a decorating quoteWhat a proper quote should itemise, the questions worth asking any decorator, and why the cheapest number nearly always leaves something out.Start here4 min
- 05Before you open the paintA sensible first project, a proper look at the surface and a plan that leaves room for drying.Start here2 min
- 06A small kit that does a good jobBrushes, roller sleeves, trays and protection. What is worth buying and what you can leave on the shelf.Start here2 min
- 07Look after the finish, brushes and leftover paintCuring, gentle cleaning, sensible storage and responsible disposal after the last coat.Start here2 min
- 08How much paint, and how much time?Measure the actual surfaces, read the spread rate and allow for coats, texture and drying.Start here2 min
- 09Know what not to disturbLead, asbestos, dust, access and ventilation. The safety checks that come before a decorating technique.Know your limits2 min
Chapter 2: Preparation
Nine tenths of the job. Sanding, filling, priming and the patience in between.
4 guides
- 01Which sandpaper should I use?Understand grit numbers, choose the right abrasive and know when sanding is the wrong answer.Start here3 min
- 02Filler, caulk and a repair that stays putChoose between a sandable repair and a flexible joint, and avoid chasing a crack that keeps coming back.Build your skills2 min
- 03Primer, undercoat and stain block explainedWhat each layer does, when it earns its place and why one tin cannot solve every surface problem.Start here2 min
- 04New plaster and the first coatWhy new plaster needs the right drying conditions and why there is no universal mist coat ratio.Build your skills2 min
Chapter 3: Paint & finishes
What is in the tin, what it does on the wall and how to choose between them.
2 guides
Chapter 4: Practical techniques
Cutting in, laying off, rolling a wall. The hand skills, explained slowly.
5 guides
- 01Paint a room in a sensible orderFrom protecting the floor to keeping a wet edge, a straightforward sequence for sound interior surfaces.Start here2 min
- 02Cutting in without the fearA steadier brush line at ceilings and trim, with practice, sensible loading and less overworking.Build your skills2 min
- 03Doors, skirtings and painted woodworkClean properly, preserve the profiles and build a compatible finish without heavy brush marks.Build your skills2 min
- 04Can these kitchen cupboards be painted?A suitability check for timber, laminate and wrapped doors before you invest in paint and preparation.Know your limits2 min
- 05Wallpaper and lining paper: start with the wallWhen lining helps, how to plan a hanging sequence and why paper cannot rescue loose plaster.Build your skills2 min
Chapter 5: Older homes & outdoors
Lime, stone, salt air and sash windows. Read the building before you paint it.
5 guides
- 01What is under the paint in an old Fife houseLath and plaster, lime harling, distemper, pitch pine, cast iron and sash weights. How to tell what you have in a pre 1919 house, and what never to do to it.Know your limits5 min
- 02Anatomy of a sash window repaint, in twenty stagesOne traditional sash and case window, from first inspection to the last coat of gloss, in the order a decorator actually does it and why each stage exists.Know your limits4 min
- 03When to paint the outside in Fife, month by monthSalt air, dew point, first frost, when render is dry enough and why late April to early October is the season, with the exceptions.Build your skills4 min
- 04Exterior painting on the Fife coastChoose a weather window and a coating system that suits the building, not just a dry afternoon.Know your limits2 min
- 05Lime, stone and older Fife homesWhy a traditional building needs a whole wall view before you choose a breathable finish.Know your limits2 min
Chapter 6: Problem solving
When paint fails. Why it happened, what to do about it and when to call.
2 guides
- 01Damp or condensation? Pause before paintingRecognise the limits of a visual check and deal with moisture before it returns through a new finish.Know your limits2 min
- 02Peeling, flashing and other paint problemsWork backwards from the symptom instead of trying to bury it beneath another coat.Build your skills2 min
Four reference rooms
Look it up
before you buy it.
The guides tell you how. These rooms tell you what. What each brush, paint, defect and word actually is.
Tools & materialsForty odd itemsThe Kit RoomWhich brush, which sleeve, which filler, which tube. Each thing on the bench explained by what it is for and what it is not for. Answer three questions and it lays out the kit for your job.Open the Kit Room 
Paint types & sheenThe Paint ShelfEvery paint type explained, a sheen scale, and which paint on which surface.
Nineteen failuresDefects EncyclopaediaWays paint fails, photographed, with cause, fix and whether to call.- Forty six termsGlossaryThe words a decorator uses without thinking, explained plainly.Open the glossary
Five planning tools
Work it out
before you start.
Each one answers a single question you will have before a job. None of them ask for an email address.
- When?Painting weatherYour postcode, seven days, and a better time to paint outside.Open
- How much?Paint calculatorWalls, ceilings and woodwork, with the coats a real job needs.Open
- How long?Room plannerHow long a room really takes, with drying, in the order it is done.Open
- How often?Repaint plannerWhen each surface of your house will want attention, adjusted for the coast.Open
- Is it fair?Quote checkerSixteen things a proper decorating quote should say. Tick what yours does.Open
Three reading orders
Not sure where to begin?
Start here.
Four guides each, in the order that makes sense. About forty minutes of reading, or listening while you clear the room.
A better finish
Understand the preparation beneath a smooth, lasting surface.
An older home
Read the building before deciding what to put on it.
Keep this to hand
A quick word
on sandpaper.
Bigger number, finer abrasive. The aim is a sound, even surface, not removing as much as possible.
Never sand unknown old paint or textured coatings. Establish that the material is safe before disturbing it.
Read the complete guide Looking for the paint finish reference?| Grade | Typical job | What to watch |
|---|---|---|
| P80 to P100 | Initial shaping of suitable bare timber or hard filler | Coarse scratches can show through paint. Not a default for plaster or old paint. |
| P120 to P150 | Refining timber and levelling suitable dry repairs | Use a block on flat repairs. Keep edges and mouldings intact. |
| P180 | Fine preparation of sound painted woodwork | Aim for a uniformly dull surface, not complete removal. |
| P220 to P240 | Light denibbing between compatible, sufficiently dry coats | Use only where the product permits sanding. Do not polish the surface. |
Learn by watching
Watch the technique.
Popular tutorials from independent creators. Useful companions to the written guides, with the credit where it belongs.
The whole room
How To Paint A Room | DIY For Beginners
A popular starting point for seeing a room painting project explained. Use the written guides here for UK surface and product checks.
Home RenoVision DIYAbout 10.2 million views when checked
Watch on YouTube (opens in a new tab)Brush control
How to paint a straight line
A focused tutorial on cutting in at ceilings. Practise on a sample board before working along a finished ceiling.
Paint Life TVAbout 1 million views when checked
Watch on YouTube (opens in a new tab)Room painting
How to Paint a Room Like a Pro
A room painting demonstration from the home improvement series. American paint names and building details may differ from your home.
This Old HouseAbout 964,000 views when checked
Watch on YouTube (opens in a new tab)New plaster
How to Paint New Plaster: a Complete Guide
A UK tutorial to accompany the plaster guide. Always take drying and dilution instructions from your current paint manufacturer.
Charlie DIYteAbout 782,000 views when checked
Watch on YouTube (opens in a new tab)This is a selected watch list, not a ranking of all YouTube videos. Titles, channels and approximate view counts were checked on 25 September 2026. Views change. Videos belong to their creators; inclusion does not imply endorsement of Aethos. Our written guides are original general guidance, not video transcripts. Product instructions and current UK safety guidance take priority. Videos open on YouTube; no embedded player loads on this page.
Knowledge is worth sharing
For the work you do yourself.
And the work you choose not to.
Knowing when to call someone is part of doing a good job. If your St Andrews or Fife home needs a closer look, I am happy to talk it through.