Before You Paint: 7 Things You Must Fix or Prepare First
BUILD SMART WITH RAYNEAU
Building Better Starts Here.
A fresh coat of paint can completely change the look and feel of a room.
It can brighten a tired space, refresh a home, protect a surface and make old walls feel new again.
But there is one mistake many homeowners make:
They start painting before the wall is ready.
That can lead to peeling paint, bubbling, uneven finishes, mould returning, cracks showing through and money being spent twice.
So as we begin our new Build Smart with Rayneau Paint Series, we are starting where every good paint job should begin:
Preparation.
Before you open the tin, before you load the roller and before you choose your final colour, here are seven things you should fix or prepare first.
1. Repair Cracks Before You Cover Them
A crack in the wall may look small, but painting over it does not repair it.
In fact, once the fresh paint dries, the crack may soon become visible again.
Before painting:
- Remove loose material around the crack
- Clean the area
- Use a suitable filler or repair product
- Allow the repair to dry properly
- Sand the area smooth
Some cracks are only cosmetic. Others may be caused by movement or a larger issue.
Build Smart Tip: If a crack keeps returning, is widening or looks serious, get it checked before covering it.
A coat of paint should be the finishing touch, not the repair.
2. Remove Peeling and Flaking Paint
If the old paint is peeling, bubbling or flaking, the new paint will only be as strong as the weak surface underneath it.
Painting directly over loose paint can lead to the new coat coming away too.
Before repainting:
- Scrape away loose material
- Sand rough edges
- Clean the surface
- Check why the old paint failed
- Prime where necessary
Do not build a fresh finish on top of a failing one.
The surface needs to be sound before the new coat goes on.
3. Fix Dampness Before Painting
This is one of the most important steps.
If a wall is damp, painting over it will not solve the moisture problem. It may only hide it temporarily.
Soon, you may begin seeing:
- Bubbling paint
- Peeling
- Staining
- Dark patches
- Mould
- Discolouration
Before painting a damp wall, find out where the moisture is coming from.
Possible causes include:
- Roof leaks
- Plumbing leaks
- Water entering through exterior walls
- Poor drainage
- Failed sealant around windows or openings
- Condensation
Stop the water first. Paint later.
A good finish starts with a dry wall.
4. Clean Dirty or Greasy Walls
Walls collect more dirt than we sometimes realise.
Dust, fingerprints, cooking grease, smoke residue, cobwebs and general grime can affect how well paint sticks.
This is especially important in:
- Kitchens
- Hallways
- Children’s rooms
- High-touch areas
- Rooms near cooking spaces
Before painting, clean the surface properly and allow it to dry.
Paint needs a clean surface to bond properly.
Skipping this step may leave you with a finish that looks uneven or begins to fail sooner than expected.
5. Deal With Mould and Mildew Properly
If you see mould or mildew, do not simply paint over it.
That may hide the problem for a while, but it does not remove the cause.
First, determine why the area is staying damp or poorly ventilated.
Then clean and treat the affected surface appropriately.
If the mould keeps coming back, the moisture problem may still be present.
The goal is not to cover the mould. The goal is to stop the conditions allowing it to grow.
Once the area is clean, dry and properly prepared, then you can move on to priming and painting.
6. Sand Rough and Uneven Areas
Fresh paint can make surface imperfections even more noticeable.
Bumps, ridges, patched spots and rough areas may stand out once the wall has a new finish.
Sand areas that are:
- Rough
- Uneven
- Patched
- Flaking around the edges
- Raised after repairs
Once sanding is complete, remove the dust before applying primer or paint.
Smooth surface. Better finish.
This is one of those preparation steps that can make a big difference in the final result.
7. Know When to Use Primer
Primer is often treated like an optional extra.
But in many situations, it is an important part of the paint system.
Primer can help:
- Improve paint adhesion
- Seal porous surfaces
- Prepare repaired areas
- Reduce uneven absorption
- Help cover major colour changes
- Improve the final appearance
You may need primer on:
- New plaster
- Bare masonry
- Repaired patches
- Previously stained areas
- Surfaces changing from a dark colour to a light one
- Some previously painted walls
Do not ask only, “What colour should I buy?”
Also ask: “What does this wall need before the colour goes on?”
That question can save time, money and frustration.
THE PAINT IS ONLY PART OF THE JOB
When most people think about painting, they picture:
A brush. A roller. A tin of paint.
But a proper paint job may also require:
- Scrapers
- Sandpaper
- Fillers
- Primer
- Masking tape
- Cleaning materials
- Drop sheets
- Brushes
- Rollers
- Trays
These are not just extras. They are part of the preparation that helps create a cleaner, stronger and longer-lasting finish.
BEFORE YOU CHOOSE THE COLOUR, CHECK THE WALL
Take a few minutes today and inspect the space you plan to paint.
Ask yourself:
- Are there cracks?
- Is paint peeling?
- Is the wall damp?
- Is there mould or mildew?
- Is the surface dirty or greasy?
- Are there rough areas?
- Does the wall need primer?
If the answer to any of these is yes, deal with that first.
Preparation is not a delay. It is part of the job.
THIS WEEK’S BUILD SMART RULE
FIX IT. CLEAN IT. PREP IT. THEN PAINT IT.
A beautiful paint job does not begin with the first brushstroke.
It begins with the surface underneath.
And if that surface is properly prepared, the paint has a much better chance of looking good and lasting longer.
This Wednesday, we take the next step in our Paint Series with our first Build Smart carousel, looking at the tools and products that help homeowners prepare properly before the first coat.
BUILD SMART WITH RAYNEAU
For fillers, primers, sandpaper, scrapers, masking supplies, brushes, rollers and painting essentials, visit your nearest Rayneau Construction & Industrial Products Ltd. branch.
Vide Bouteille — 450-7246
Corinth — 450-7247
Monchy — 450-7248
Babonneau — 450-5759
FIX IT. CLEAN IT. PREP IT. THEN PAINT IT.
BUILD SMART WITH RAYNEAU
Building Better Starts Here.







































