Free checklist
Concrete slab moisture mitigationConcrete slab moisture mitigation rough-in inspection checklist
Concrete slab moisture mitigation rough-in is the last time the work is fully visible. Once the cover inspection passes and the walls, ceilings and slabs close, every defect left behind becomes a demolition bill. This checklist walks the rough-in in the order the work goes in, with the photo each item needs before it gets buried. Work is commonly verified against manufacturer's published instructions, ASTM F3010 / F710 guidance. Confirm the edition your authority having jurisdiction has adopted.
The checklist
Every item, and the photo evidence it needs
The photo count on each row is what RTI would require before the item can be submitted. Work the list here and watch the gate hold, or load it into RTI and let it enforce the real thing.
Moisture and system selection
Slab moisture or RH result drives the system
Current in-situ RH or moisture reading on record, the mitigation system selected matching that result and the flooring to go over it, not an assumed value.
Slab clean, dry and free of bond-breakers
No curing compound, sealer, adhesive residue or dust left on the surface that would stop the coat from bonding to the concrete.
Testing agency's moisture report on file
Report names the test method used, shows each test location on a plan with its reading, and records the building conditions during the test.
No photoFlooring and adhesive makers accept the mitigation system
Written compatibility from the flooring and adhesive manufacturers for this mitigation system on file, so the flooring warranty holds over the membrane.
No photo
Surface preparation
Profile achieved across the whole slab
Prep taken to the profile the system calls for over the full area including edges and corners, verified against the reference, not just in the open field.
Cracks and joints treated before the coat
Moving cracks and control joints filled or detailed per the system rather than coated over, treatment carried into the joint as specified.
Test sites cleared out and filled before the coat
RH probe holes, sleeves and test-kit residue removed, holes filled with a product the mitigation system allows and left flush with the prepped slab.
Prepped surface soaks in a drop of water
Water drops placed across the prepped slab absorb instead of beading, showing open pores the coat can bite into; beading spots marked for more prep.
Repair mortars under the membrane are ones the system allows
Patching, crack fill and leveling products going under the coat are listed in the mitigation manufacturer's instructions, or get placed over the membrane instead.
No photo
Crack map and slab penetrations
Crack and joint locations mapped before the coat hides them
Cracks, control joints and cold joints drawn on the floor plan with the treatment each got, so the flooring crew knows where they run under the membrane.
No photoGaps at slab penetrations packed and sealed
Voids around pipes, conduit and floor drains filled with a material the system allows, so the coat ties in without bridging an open gap.
Materials and application conditions
Kit labels match the approved mitigation system
Product name, components and batch numbers on the kits photographed and checked against the approved submittal, shelf-life dates still current.
Slab and air temperatures inside the application range
Surface and air temperatures and the surface-to-dew-point spread read at the start of work, each within the manufacturer's limit for application and cure.
Zone closed to other trades through application and cure
Super has the area closed on the schedule and posted at the entries, so no trade walks, stages or rolls carts over the coat before it cures.
No photoComponents mixed as full kits at the labeled ratio
Whole kits mixed for the time and with the mixer the instructions call for, no partial or eyeballed batches, each batch placed within its pot life.
No photo
What usually sends this back
The failures are almost always the evidence, not the work
- System chosen off an old moisture number so the coat is rated below what the slab is actually giving off, and it fails under the flooring.
- Slab shot-blasted in the field but left with laitance or a curing compound in the corners the machine could not reach, so the coat never bonds there.
- Active cracks and control joints skimmed with the coat as if they were part of the field, so they telegraph and split the membrane.
Verified against
Common questions
6 answers
- What does this concrete slab moisture mitigation rough-in checklist cover?
- 15 items across 4 sections, covering moisture and system selection, surface preparation, crack map and slab penetrations, materials and application conditions. Each item spells out what the person walking the job is actually looking for, not just a box to tick.
- Who should run this inspection?
- The mitigation applicator's lead confirming the slab is ready, or the GC's superintendent releasing the slab before the coat starts.
- When in the schedule should this walk happen?
- After the slab is tested and prepped and before the first mitigation coat, while a wrong system pick or a missed crack can still be caught.
- Why do these items ask for a photo?
- 9 of the 15 items call for photo evidence, 12 photos in all. A checklist answer without the photo is a claim; the photo is what makes the record worth something in a dispute and lets a reviewer approve work without re-walking the job.
- What most often fails a concrete slab moisture mitigation rough-in inspection?
- System chosen off an old moisture number so the coat is rated below what the slab is actually giving off, and it fails under the flooring. Slab shot-blasted in the field but left with laitance or a curing compound in the corners the machine could not reach, so the coat never bonds there. Active cracks and control joints skimmed with the coat as if they were part of the field, so they telegraph and split the membrane.
- Can I use this checklist in RTI?
- Yes. Start a free RTI workspace, build this list as a checklist, and the Photo Gate holds the submit button until every mandatory item is answered and its photos are attached. Approved inspections roll into a branded turnover package with a tamper evident audit trail.
Related checklists
Run it with the Photo Gate
A checklist nobody can submit half-finished
Load this list into RTI, stick a QR tag on the area it covers, and the submit button stays locked until every mandatory item is answered and the 12 required photos exist. Approved walks roll into a branded turnover package with a tamper evident record behind every line.
See all 508 checklists · 6741 items and 5984 photo requirements in total.