A complete interior painting project is a sequence of decisions: what needs repair, what should remain, how colour behaves in the room, which finish belongs on each surface and how the work will move through an occupied home.
This guide brings those decisions together. It is not a substitute for inspecting the walls, trim and ceilings, but it gives Niagara homeowners a practical way to define the scope before comparing estimates.
1. Define the result before choosing paint
“Repaint the interior” can mean several different projects. One homeowner wants a clean colour change on sound walls. Another expects cracked plaster, damaged trim and old stains to disappear. A third is preparing a furnished home for sale and needs the work completed in stages.
Begin by deciding:
- Which rooms are included
- Whether ceilings, closets and trim are included
- Which defects should be repaired
- Whether doors, cabinetry or built-ins are separate
- How much disruption the household can accept
- Whether the objective is renewal, restoration or a simple colour change
2. Inspect every substrate
Drywall, plaster, wood, previously painted masonry and metal do not use the same preparation. Even within one room, walls, baseboards and radiators may require different systems.
Look for water staining, cracks, loose coating, glossy enamel, grease, smoke film, failed caulking and poor previous repairs. Paint should not be used to conceal an active leak or unstable material.
3. Decide what level of repair is expected
Minor preparation may include nail holes and small dents. A higher repair standard can include feathering old patches, correcting cracked joints, stabilizing localized plaster and inspecting surfaces under directional light.
Written estimates should distinguish repair allowances from open-ended restoration. Hidden water damage, loose plaster or widespread coating failure can change the scope after work begins. The approval process for those discoveries should be clear in advance.
For a detailed breakdown, read How Professional Painters Prepare Walls Before Painting.
4. Consider lead before disturbing old paint
Health Canada says homes built before 1960 probably contain lead-based paint. Homes built between 1960 and 1990 may still contain it, particularly on exteriors, and interior layers can also remain beneath newer paint.
Windows, doors, stairs, railings and trim are important because friction and repeated handling can create chips or dust. Do not assume aggressive dry sanding is appropriate simply because several newer coats cover the old surface.
5. Build the colour palette in the actual light
Paint colour changes with window direction, time of day, flooring, cabinetry, trim and artificial lighting. A digital image or store chip can establish a direction but cannot approve the final colour.
Use large samples in the intended product and sheen. Move them around the room and review them in morning, afternoon and evening light. Connected rooms should be considered as a sequence, particularly where hallways and open plans create long sightlines.
See How Natural Light Changes Paint Colour in Niagara Homes for a full sampling method.
6. Assign the right sheen to each surface
Flat and matte
These finishes reduce reflection and can make broad walls and ceilings feel quiet. They vary significantly in washability, so the exact product matters in high-contact rooms.
Eggshell and pearl
Often chosen for living areas and circulation spaces because they balance appearance and cleaning. Increased reflection can reveal wall defects and roller variation.
Satin and semi-gloss
Common on trim, doors and selected high-use surfaces. They demand better preparation and controlled application because light emphasizes edges, brush marks and repairs.
There is no universal sheen schedule. A premium matte may outperform an inexpensive eggshell in one application, while trim still needs a dedicated product designed for levelling and block resistance.
7. Specify products by line, finish and base
A brand name alone does not describe the coating. Product lines have different solids, VOC information, washability, recoat times and substrate recommendations. Deep bases and colourants may also differ from white or pastel bases.
The estimate should name the primer and finish products. Technical Data Sheets and Safety Data Sheets should be available for the exact materials being proposed.
8. Treat trim and doors as a separate craft
Baseboards, casings, windows and doors accumulate hand oils, cleaners, wax and old enamel. They often need cleaning, deglossing, repairs and adhesion primer before the finish coat.
Door edges and frames also need enough cure time before closing against one another. A coating may feel dry while remaining vulnerable to blocking or impressions.
9. Keep cabinetry separate from ordinary wall painting
Kitchen and bathroom cabinets experience grease, water, abrasion and repeated handling. They require a dedicated assessment of substrate, existing finish, hardware, disassembly, application method and curing.
Wall paint, even when durable on drywall, is not automatically a cabinetry system. Cabinet work should be written as its own scope rather than hidden inside “trim.”
10. Plan the sequence through an occupied home
An efficient sequence reduces repeated setup and protects completed work. A common approach is ceilings, walls, trim and doors, but repairs, spraying, cabinetry and household access can change the order.
Before work begins, agree on:
- Which furniture the homeowner moves
- Where fragile objects and artwork will be stored
- How floors and built-ins will be protected
- Daily start, stop and cleanup expectations
- Which rooms must remain usable
- How pets and children will be separated from the work area
- Where materials and tools can be stored
11. Manage dust rather than merely cleaning it later
Repair and sanding dust can travel through doorways and mechanical systems. Localized containment, suitable extraction, protected returns and deliberate cleanup should be planned before preparation begins.
Dust control is especially important in homes with infants, asthma, respiratory conditions or possible lead paint. Read Painting a Nursery or a Home With Asthma for a more cautious project plan.
12. Ventilate the complete system
Low-VOC paint can reduce one source of indoor emissions, but the complete project includes primer, patching compound, caulk, cleaners and sometimes specialty coatings. Odour is not a complete measurement of emissions.
Ventilate outdoors when conditions allow and follow the product instructions for application, recoat, cure and return to service. Sensitive occupants may need to remain outside the work area.
For the terminology behind product labels, see What “Low-VOC” and “Zero-VOC” Paint Actually Mean in Canada.
13. Understand coats as a system, not a slogan
“One-coat coverage” can describe hide under favourable conditions. It does not guarantee an even film over repairs, porous areas, strong colour changes or every lighting condition.
A professional scope may call for spot primer plus two finish coats, full primer plus finish coats, or another system based on the substrate. The objective is a uniform, attached finish rather than reaching a predetermined coat count regardless of what the surface needs.
14. Inspect the work under normal room conditions
The final walk-through should happen after protection is removed and the room is lit as it will normally be used. Review:
- Uniform colour and sheen
- Cut lines and transitions
- Visible repairs under normal viewing distance
- Trim, door edges and hardware
- Cleanup and removal of masking residue
- Any documented touch-ups or remaining exclusions
Extreme inspection with a flashlight held against the wall can reveal normal substrate variation that was never part of the agreed repair standard. The expected finish level should be discussed before the work, not invented at the final walk-through.
15. Keep a project record
Save the manufacturer, product line, colour name and code, finish, tint base and date. Photograph labels and record where each product was used. Leftover paint should be sealed, labelled and stored according to the manufacturer’s instructions.
Good records make future touch-up and maintenance easier, although aged paint and sun exposure can still prevent an invisible touch-up.
What a complete estimate should include
| Section | Expected information |
|---|---|
| Rooms and surfaces | Walls, ceilings, closets, trim, doors, windows and exclusions |
| Preparation | Cleaning, repairs, sanding, caulking and primer |
| Products | Exact primer and finish line, sheen and coat plan |
| Protection | Floors, furniture, fixtures and dust-control approach |
| Sequence | Room order, access and occupied-home arrangements |
| Changes | How hidden damage or added work is priced and approved |
| Completion | Cleanup, walk-through, touch-ups and project records |
Gillet’s approach
Stephan begins with the room and substrate rather than imposing one standard package on every home. The objective is to make preparation, colour, product and sequence support one another so the finished interior feels deliberate and remains serviceable.
Send Gillet Painting the rooms, surfaces, timing and photographs of your interior. A precise first description allows the consultation to focus on the decisions that actually affect the result.
