Concrete Preservation Checklist
A printable annual checklist for the actions that extend concrete service life — water pathways, joint integrity, treatment status, and contamination response.
This checklist covers preservation actions rather than cleaning. It is organized around the pathways by which concrete deteriorates, and it is intended to be completed annually — ideally in early autumn, so that anything it identifies can be addressed before the wet season.
For condition assessment, use the concrete surface inspection guide alongside this. That records what state the concrete is in; this records what is being done to protect it.
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Assessment Checklist
Water Pathways — The Priority Section
- All drainage inlets, area drains, and trench drains cleared this season
- Drainage confirmed as functioning, not merely visibly clear
- Downspouts discharging away from slabs, not onto them
- Grade directing water away from slab edges and building bases
- Ponding locations identified and, where practical, addressed
- Irrigation heads redirected away from concrete surfaces
- Irrigation schedule reviewed so slabs are not repeatedly saturated
- Site drainage paths that cross concrete identified and, where possible, rerouted
Joint Integrity
- Expansion joint sealant inspected along its full length
- Failed, missing, or degraded sealant scheduled for repair
- Control joints clear of soil and vegetation
- Joints at building interfaces sealed
- Vegetation removed from all joints and cracks
- Faulting between slabs recorded where present
- Joint repairs completed before the wet season
Crack Management
- Cracks wide enough to admit water identified and located
- Crack widths recorded with the date, for year-on-year comparison
- Cracks with vertical displacement flagged separately — trip hazard and structural indicator
- Crack sealing completed on qualifying cracks before the wet season
- Previously sealed cracks inspected for sealant failure
- Any crack that has widened since last inspection flagged for assessment
Surface Treatment
- Sealed areas identified and mapped
- Sealer performance tested — does water bead, or darken the surface?
- Areas where sealer has worn through, particularly in traffic paths, recorded
- Application dates recorded for all treated areas
- Resealing scheduled where performance has declined
- Treatment type confirmed as appropriate — penetrating versus film-forming
- Decorative and specialty finishes identified and marked on the site plan
Contamination Response
- Oil and fluid contamination areas identified
- Recent contamination addressed promptly rather than left to penetrate
- Chronic contamination locations identified — recurring sources rather than incidents
- Vehicle and equipment leak sources reported to the responsible party
- Organic staining sources identified — overhanging trees, sap, fruit drop
- Landscaping adjustments considered where organic staining is chronic
- Spill response procedure in place and a kit accessible
Biological Load
- Growth on concrete surfaces identified by location
- Growth on walking surfaces flagged as a safety item
- Growth treated rather than only removed this cycle
- Shading sources contributing to growth identified
- Landscaping trimmed back to reduce shading and moisture retention where practical
- Growth locations tracking a water source flagged for source correction
Cleaning Method Controls
- Contractor has written substrate and treatment information for all concrete areas
- Method constraints stated per area rather than one specification for all
- Test area required on any treated or decorative surface
- Acidic product use restricted to areas where mineral deposits genuinely require it
- Pressure limited on aged, treated, or decorative surfaces
- Post-cleaning check that sealer performance has not been degraded
Annual Planning
- Condition record updated with dated photographs from repeatable positions
- Extents recorded, not just presence
- Areas that moved between condition stages this year identified
- Rolling multi-year list updated with anticipated interventions
- Operating versus capital classification assigned to each anticipated item
- Source conditions driving deterioration in specific areas documented
- Next year's pre-season actions scheduled
Timing
Complete this in early autumn where possible. Almost every action on it is more valuable performed before sustained rain than after — drainage cleared, joints sealed, cracks closed, growth treated, and sealer reapplied all change what the wet season does to the concrete.
The exception is condition recording, which benefits from a second pass during or after rain to observe drainage behavior and ponding under load.
What This Checklist Does Not Cover
This covers preservation practice. It is not a structural assessment and does not determine whether cracking is structurally significant, whether a slab retains adequate capacity, or whether observed distress requires engineering intervention. Where cracking shows displacement, reinforcement is exposed, or delamination is widespread, an assessment by a qualified structural or concrete professional is the appropriate step.
Part of the Asset Protection Center
This resource is part of the Power Wash NorCal Commercial Asset Protection Center — protecting and extending the service life of commercial exterior assets.
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Read More →Frequently Asked Questions
When should concrete preservation work be done?
Early autumn, before sustained rain, for almost everything — drainage clearing, joint sealing, crack sealing, growth treatment, and resealing all change what the wet season does to the concrete. Condition recording benefits from a second pass during or after rain to observe drainage under load.
How do you check whether concrete sealer is still working?
Apply water to the surface and observe. Water that beads indicates the sealer is performing; water that darkens the surface indicates absorption and that reapplication is due. Sealer wears fastest in traffic paths, so check there rather than in a protected area.
What is the most important concrete preservation action?
Managing water — clearing drainage, keeping downspouts discharging away from slabs, maintaining joint sealant, and redirecting irrigation. Nearly every concrete deterioration mechanism begins with water reaching somewhere it was not meant to reach, and these actions are inexpensive relative to any remedy downstream.
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