Preparation Determines the Result
The visible difference between a professional interior paint job and an amateur one is almost entirely preparation. Application is the fast part; preparation is where the hours go and where quality is decided. Proper preparation includes protecting floors and furnishings, removing hardware and fixtures, cleaning surfaces, repairing defects, sanding, spot priming, and caulking gaps at trim. Surface cleaning matters more than homeowners expect. Kitchens accumulate grease films, bathrooms accumulate residue, and paint applied over either will not bond properly regardless of product quality. Repair work — filling nail holes, patching cracks, addressing damaged drywall or plaster — has to happen before paint, and it is the step most often shortchanged in a low bid. Priming is situational rather than universal. New drywall, patched areas, stains, dramatic color changes, and glossy existing surfaces all require it. Skipping primer where it is needed produces flashing, poor coverage, and adhesion failure. When comparing quotes, the preparation scope is usually where the price difference lives. Two bids on the same rooms that differ substantially are almost never differing on paint cost.
Older Plaster Walls in Metro Detroit
A large share of Metro Detroit housing has plaster and lath rather than drywall, and it behaves differently. Plaster develops hairline cracks from settlement and seasonal movement. Filling them with standard patching compound often produces cracks that return, because the movement continues. Proper repair addresses the crack with appropriate materials and sometimes with reinforcing tape embedded and feathered. Plaster can also delaminate from the lath, producing areas that sound hollow and flex under pressure. Painting over delaminated plaster does not stabilize it. Re-anchoring or removal and replacement is the correct approach. Old plaster is often coated with layers of prior paint, sometimes including oil-based finishes. Applying latex over a glossy oil surface without proper preparation produces peeling. Testing the existing finish and preparing accordingly is a standard part of professional work here. Textured plaster surfaces, common in certain vintages, complicate patching because matching the texture is a skill in itself. Trim in older homes is frequently original wood with many layers of paint, and stripping, or at minimum careful sanding and priming, produces a substantially better result than another coat over a heavily built-up profile.
Lead-Safe Requirements
This is the single most important regulatory consideration for interior painting in Metro Detroit, given the age of the housing stock. Federal rules require that firms performing renovation, repair, or painting that disturbs covered painted surfaces in housing built before 1978, or in child-occupied facilities, be certified and follow specific lead-safe work practices. Sanding, scraping, and surface preparation on painted surfaces in pre-1978 homes falls squarely within this. Lead-safe work practices include containment of the work area, prohibition of certain high-dust methods, specific cleanup procedures, and cleaning verification. A large proportion of Metro Detroit housing predates 1978, which means this applies to ordinary repainting work here far more often than in newer markets. Homeowners should confirm certification directly rather than assuming. A painting contractor working in this market should be able to produce it without hesitation. Lead exposure is a serious health matter, particularly for young children and pregnant women. Any question about lead hazards, testing, or health effects should be directed to the EPA, the Michigan Department of Health and Human Services, or a certified lead professional rather than resolved from contractor assurances.
Paint Selection
Sheen is the decision that affects daily life most. Flat finishes hide surface imperfections well, which matters on older uneven walls, but clean poorly. Eggshell and satin balance appearance and washability and are common on walls. Semi-gloss and gloss are durable and cleanable and are typical on trim, doors, and in bathrooms and kitchens. On older plaster with visible imperfection, a lower sheen is generally more forgiving because gloss emphasizes every irregularity under raking light. Quality differences between paint lines are real and show in coverage, durability, and how well the finish holds up to cleaning. A cheaper paint frequently requires an additional coat, which erases the savings in labor. Low-VOC and zero-VOC products reduce odor and emissions, which matters when occupying a home during painting, particularly with children, elderly occupants, or anyone with respiratory sensitivity. Moisture-resistant and mildew-resistant formulations are appropriate in bathrooms, laundry areas, and basements. Color selection is worth testing on the actual wall in the actual light. Metro Detroit's overcast winter light differs substantially from summer light, and a color chosen from a chip in a store frequently reads differently at home.
Process and What to Expect
A professional interior job typically proceeds room by room or zone by zone rather than opening the entire house at once, which keeps the home livable. Furniture is moved to the center and covered, or removed. Floors are protected. Hardware, switch plates, and fixtures are removed rather than taped where practical. Repairs and sanding happen next, followed by cleanup of dust before any paint is applied. Painting over sanding dust produces a gritty finish. Priming is applied where needed, then finish coats. Two coats is standard for most color changes; some colors, particularly deep reds and yellows, require more. Trim is generally cut in and finished with attention to the line at the wall, and this is where careful work is most visible. Cleanup includes reinstalling hardware, removing protection, and a walkthrough. A punch list at the end is normal and reasonable. Ventilation during and after painting matters, and in a Michigan winter when windows stay closed, low-odor products and mechanical ventilation are worth discussing.
Cost Drivers
Square footage of surface, not floor area, drives material and base labor. High ceilings add substantially. Preparation condition is the largest variable. Smooth, sound walls needing only cleaning are a fraction of the labor of cracked plaster requiring extensive repair. Trim, doors, and windows are labor-intensive relative to their area, and a room with extensive original millwork costs far more to paint properly than one with minimal trim. Ceiling painting adds meaningfully because of the working position. Color change severity affects coat count. Going dramatically darker or lighter, or covering a saturated color, requires primer and often additional coats. Lead-safe work practice requirements in pre-1978 housing add containment and cleanup labor. This is a legitimate cost, and a bid that ignores it in an older home is either non-compliant or has not accounted for the work. Occupied versus vacant matters. Working around furniture and household routines is slower than working in an empty house.
Choosing a Painting Contractor
Verify licensing and confirm liability and workers' compensation insurance directly with the carrier. For any home built before 1978, confirm current lead-safe renovation certification. This is not optional and it is the first question to ask in this market. Ask what the preparation scope includes specifically — cleaning, repair, sanding, priming, caulking. This is where quotes diverge and where quality is determined. Ask how many coats are included and what happens if coverage requires more. Ask what products are being used. A contractor who will not specify the product line is not giving you a comparable quote. Ask about the crew — employees or subcontractors — and who supervises. Get the scope in writing including which surfaces are included. Ceilings, trim, closets, and doors are frequently the ambiguity in a quote. Rebuild Detroit presents and verifies provider information. Rebuild Detroit does not perform painting work — the contractor you select is responsible for the work and its warranty.
Getting a Durable Result
Address moisture problems before painting. Paint over a damp wall fails, and repainting a recurring stain without finding the source is repeating work. Fix the underlying defect rather than the symptom. Cracks that return, peeling in a bathroom, and staining at a ceiling all have causes that paint does not address. Allow proper cure time. Paint is dry to the touch long before it is fully cured, and washing or heavy contact too early damages the finish. Keep leftover paint labeled by room, sealed properly, and stored somewhere that does not freeze. A Michigan garage or unheated porch will ruin latex paint. Touch-up is easiest when the same batch is used, so retaining a small quantity is worthwhile. On a whole-house repaint, doing it in phases across seasons is reasonable, but keeping consistent products and colors across phases requires records. Rebuild Detroit presents and verifies provider information. Rebuild Detroit does not perform the service.
Frequently Asked Questions
Does the lead paint rule apply to ordinary repainting?
If the home was built before 1978 and the work disturbs covered painted surfaces — which sanding and scraping do — then yes, the firm must be certified and follow lead-safe work practices. Given the age of Metro Detroit's housing stock, this applies to routine repainting here far more often than in newer markets.
Why do the cracks in my plaster keep coming back?
Because the movement causing them continues. Filling a settlement crack with standard compound without addressing it properly leaves the same stress across the patch. Proper repair often involves reinforcing the crack rather than simply filling it.
How many coats of paint do I need?
Two is standard for most color changes. Dramatic color shifts, saturated colors like deep reds and yellows, and covering dark with light frequently require primer plus additional coats. Confirm in the quote what happens if coverage needs more.
Can I paint latex over old oil-based paint?
Not without preparation. Latex applied over a glossy oil finish will peel. The existing finish needs to be tested, then de-glossed and primed appropriately. Older Metro Detroit trim frequently has oil-based coatings under later layers.
What sheen should I use on old uneven walls?
A lower sheen. Flat and matte finishes hide surface irregularity, while satin and semi-gloss emphasize every imperfection under raking light. On older plaster, that difference is very visible.
Should I be in the house while it is being painted?
You can, particularly with low-VOC products and room-by-room scheduling. In a pre-1978 home with lead-safe containment in place, discuss the work area arrangements with the contractor, especially if young children or pregnant occupants are in the home.

