Surface preparation checklist for occupied turnovers with tenant-friendly scheduling

How to use this surface preparation checklist

This surface preparation checklist is written for property managers, landlords, and maintenance teams overseeing occupied multi-unit turnovers. It contains exactly seven numbered, contractor-ready checks you can require before finishes are applied. Use each numbered section as a contract or inspection line item, attach photographic evidence, and require the contractor to confirm WSIB and insurance documentation during handover. For guidance on how preparation affects adhesion and coating life, consult the manufacturer recommendations and industry guidance before selecting methods and products, such as the Sherwin-Williams resource on surface preparation for contractors.

1. Concrete: moisture, profile and crack repairs before coatings or tile

Key actions

• Test slab moisture and confirm acceptable conditions for the selected finish. Do not coat or adhesive-bond to visibly damp surfaces. Consult product data sheets for allowable moisture ranges.
• Remove laitance, loose residue, oil, grease, or curing compounds by mechanical methods such as grinding or light abrasive blasting where appropriate.
• Repair cracks and spalls with compatible patch materials and ensure repairs are cured and profiled to match the substrate.
• Apply the manufacturer-recommended primer or bonding agent to improve adhesion on repaired or porous concrete.

Selection of mechanical or chemical preparation methods depends on the contamination and the bond strength required, so align the approach with the adhesive or coating manufacturer. For an overview of preparation methods and their tradeoffs, see the technical guide on surface preparation methods.

QA checklist

• Moisture test record attached, date and method noted.
• Surface profile meets the coating or adhesive specification.
• Crack and spall repairs are cured and feathered smooth.
• Primer or bonding agent applied and recorded.

2. Drywall and plaster: clean, patch, sand and prime for uniform absorption

Key actions

• Remove loose plaster, flaking paint, and dust by scraping and vacuuming.
• Fill holes and dents with appropriate compound, feather the edges, and sand to a uniform profile.
• Inspect for stains and mould. Address water leaks first and remediate mould using certified procedures before finishing.
• Apply a primer matched to the finish system to normalise absorption and reduce lap marks.

Proper substrate cleanliness, solidity, and dryness are fundamental to coating performance and longevity. Plan work around drying times and product temperature ranges to avoid adhesion failures and poor aesthetics, as recommended by industry painting resources.

QA checklist

• All holes and joints feathered and uniformly sanded.
• No visible dust or contaminants on the surface before priming.
• Primer type and batch recorded.
• Moisture or mould remediation certificates attached if applicable.

3. Wood and joinery: verify moisture, sand, fill and seal

Key actions

• Measure moisture content on raw or existing woodwork, including subfloors, before installing coverings or finishes.
• Repair loose joints, replace rotten sections, and fill gaps with appropriate fillers.
• Sand to the recommended grit for the finish, removing old finishes only where adhesion or appearance requires it.
• Remove sanding dust thoroughly using vacuum and tack cloth and apply sealer or primer suitable for the final coating.

Wood must be dry and stable before high-traffic finishes are applied to avoid cupping, adhesive failures, or finish stress. Use manufacturers’ guidance on sealer and primer selection for the finish system to ensure long-term performance.

QA checklist

• Moisture measurements recorded and acceptable.
• Filler and sanding records attached, including grit used.
• Sealer or primer documented and applied as specified.

4. Tile and ceramic: cleaning, bond verification and keyed surfaces

Key actions

• Degrease and remove soap scum, oils, and residues with an appropriate cleaner before any rework.
• Assess grout condition and adhesion. Cut out and replace failed grout and re-bond loose tiles.
• For smooth glazed tile that must accept a coating or new tile, mechanically key the surface following product recommendations to provide a sufficient bond surface.
• Level and patch any depressions or lippage so new finishes sit flat and bond correctly.

Where bonding is required over old tile, test a small area or perform a pull test if the system requires high bond strength. Match preparation to the adhesive or coating manufacturer’s instructions to avoid delamination.

QA checklist

• Degreasing and cleaning recorded, test-bond result noted if performed.
• Grout repairs and tile re-bonding signed off.
• Levelness and flatness verified where required.

5. Painted metal and existing coatings: remove corrosion, profile and solvent-wipe

Key actions

• Assess adhesion of existing coatings. Remove loose paint and corrosion by scraping, wire brushing, or suitable mechanical methods.
• Treat corrosion with approved corrosion inhibitors or primers where necessary, then recoat with a compatible system.
• Perform a final solvent wipe-down where the finishing system requires it. Follow EPA best-practice procedures for solvent wipe-down to use solvents safely and effectively.

Mechanical and chemical removal methods create dust and vapours and carry safety risks. Follow safe work methods and PPE guidance when using grinders or solvents. OSHA provides overviews of hazards and controls for common surface-preparation methods.

QA checklist

• Loose coatings and corrosion removed to the specified profile.
• Corrosion treatment and primer details recorded.
• Solvent wipe records and waste handling steps documented.

6. Safety and hazardous-material screening for occupied units

Key actions

• Screen for potential hazardous materials such as lead paint or asbestos, especially in pre-1990 construction. If tests indicate risk, pause work and arrange certified testing and abatement before continuing.
• For solvent use, dust generation, or chemical strippers, provide ventilation, contain work areas, and require PPE. Follow EPA guidance on solvent wipe-down best practices and OSHA recommendations for engineering controls during mechanical preparation.
• Require WSIB-compliant contractors and proof of insurance and confirm that any work in occupied units includes tenant protection plans and clear communication protocols.

Certified testing and abatement are mandatory when regulated materials are identified. Mahal Concrete and Constructions operates with WSIB compliance and project controls for occupied properties. Insist on equivalent documentation from any contractor working in your building.

QA checklist

• Lead and asbestos screening records attached, and abatement certificates supplied if performed.
• PPE and ventilation measures documented for each high-risk task.
• Contractor WSIB confirmation and insurance certificate attached.

7. Tenant-minimizing scheduling, QA checks and contractor sign-off

Key actions

• Plan work in phases and schedule noisy, high-odour tasks during agreed windows to reduce tenant disruption and avoid access conflicts.
• Require photographic documentation of pre-work conditions, mid-work progress, and final condition for each unit turned over.
• Use a short contractor sign-off form that lists each substrate, the prep method used, and acceptance criteria signed by the contractor and property representative before payment.

For multi-unit turnovers require a consistent QA protocol across units to maintain standardized finishes and reduce rework. Mahal’s structured project delivery and quality checks are an example of how contractors can deliver consistent, low-disruption turnovers. Property managers can find a related contractor checklist that supports repeatable turnovers in Mahal’s blog post on multi unit renovation checklists.

Handover acceptance criteria

• No visible contaminants, dust, or moisture in finished areas.
• Each substrate meets the agreed profile and primer or bonding agent application is recorded.
• Photographs and signed forms are attached before final payment.

Contractor-ready inspection template

1. Project name and unit number
2. Date and time of inspection
3. Substrate checks, yes or no and notes: Concrete, Drywall, Wood, Tile, Painted Metal
4. Prep methods used and products, include manufacturer and batch
5. Moisture and test records attached where applicable
6. Safety checks: lead or asbestos screening, PPE, ventilation
7. Photographs attached: pre, during, after
8. Contractor name, WSIB confirmation, insurance certificate attached
9. Property representative name and signature, contractor signature and date

Save this form as a PDF and require it as a condition of final acceptance for each unit. That single document streamlines approvals and protects both parties by recording the exact prep work completed.

Frequently asked questions

What is the single most important surface prep step before painting an occupied unit?

Ensure the substrate is clean, solid and dry. If a surface is contaminated by oil, dust, or moisture the coating will fail. Cleaning and drying should always be confirmed before priming and finishing. Manufacturer product data and industry guidance recommend matching preparation to the intended life of the coating.

When must a contractor request lead or asbestos testing before starting surface work?

Request testing when the building was constructed in an era where lead paint or asbestos materials were commonly used, or when disturbance of suspect materials is likely. If screening or presumptive sampling indicates a risk, stop work and use certified testing and abatement contractors before continuing.

Can surface preparation methods like abrasive blasting be done in occupied apartments?

Some mechanical methods produce hazardous dust and are not appropriate in occupied spaces unless fully contained with negative pressure and certified controls. For occupied units prefer low-dust methods or isolate the work area, and require the contractor to demonstrate safe controls and WSIB compliance.

What QA items should I require from a WSIB-compliant contractor before final payment?

Require the signed inspection template, photographic evidence, moisture and test logs where relevant, copies of WSIB and insurance certificates, and a materials list including primers and adhesives. These items document compliance and reduce warranty disputes.

Is there a printable contractor sign-off template I can use for unit turnovers?

Yes, use the contractor-ready inspection template above. Save it as a PDF and attach it to the contract for each unit. Require contractor and property representative signatures and photographic attachments before final payment.

For contractors and property teams seeking a repeatable, multi-unit process, see the multi unit renovation contractor checklist for reliable, repeatable apartment turnovers for a complementary project checklist and scheduling tips.

Mahal Concrete and Constructions

References

• Surface preparation – Sherwin-Williams
• Surface Preparation Guide – Ellsworth Adhesives
• OSHA eTool: Surface Preparation
• Solvent wipe down best practices – US EPA
• Mahal Concrete and Constructions

Contact Mahal Concrete and Constructions to discuss occupied-unit turnovers and request the contractor-ready inspection PDF for your next project: the official website