Slab – Final Inspection Checklist for Home Builder

10 tasksInstallationHome Builder

This checklist ensures slab construction meets quality and code standards, focusing on leveling, finishing, and proper drainage. It also ensures thorough site cleanup and preparation for subsequent construction phases. The checklist is designed to guide home-builders through a comprehensive inspection process, ensuring all aspects of the slab are up to standard before proceeding to the next phase of construction.

1Verify the slab is level and plumb with no pits, depressions, or uneven areas exceeding 1/4 inch over 32 inches——4 steps

  1. Set up laser level

    Position a laser level at a central point on the slab. Ensure it is calibrated according to the manufacturer's instructions. The laser level will provide a reference line to check the slab's levelness.

  2. Measure slab height

    Using a measuring rod, take readings at various points across the slab. Compare these readings to ensure they fall within the acceptable range of 1/4 inch over 32 inches.

  3. Check for depressions

    Walk across the slab and visually inspect for any noticeable dips or depressions. Use a straightedge to confirm any suspected areas.

  4. Document findings

    Record all measurements and any areas of concern. This documentation will be useful for addressing issues and for future reference.

2Ensure the slab surface is trowel-finished and smooth——3 steps

  1. Inspect trowel finish

    Visually inspect the slab surface for smoothness. Look for any rough patches or tool marks that could affect the finish.

  2. Use a finishing trowel

    If necessary, use a finishing trowel to smooth out any imperfections. Work in a consistent pattern to maintain an even finish.

  3. Check for uniformity

    Ensure the entire slab has a consistent texture and appearance. Any variations should be addressed immediately.

3Pour and broom-finish the garage floor——4 steps

  1. Prepare concrete mix

    Ensure the concrete mix is appropriate for a garage floor, with the correct ratio of cement, sand, and aggregate.

  2. Pour concrete evenly

    Pour the concrete starting from the farthest corner, spreading it evenly across the floor. Use a screed to level the surface.

  3. Apply broom finish

    Once the concrete has set slightly, use a broom to create a textured finish. Pull the broom across the surface in straight, even strokes.

  4. Check slope toward door

    Ensure the floor slopes gently toward the garage door to facilitate drainage, adhering to local building codes.

4Ensure the garage floor slopes toward the door per code, with no pits, depressions, or uneven areas exceeding 1/4 inch over 32 inches——3 steps

  1. Verify slope with level

    Use a spirit level to check the slope of the garage floor. The slope should be consistent and direct water toward the door.

  2. Inspect for depressions

    Walk the floor to identify any low spots that could collect water. Use a straightedge to confirm any suspected areas.

  3. Correct any issues

    If depressions or incorrect slopes are found, plan for corrective measures such as resurfacing or grinding.

5Pour and broom-finish the patio, stoop, and porch with the correct slope for drainage——4 steps

  1. Prepare the site

    Ensure the area is clear of debris and the subgrade is compacted and level.

  2. Pour concrete

    Pour the concrete evenly, using a screed to level it. Ensure the mix is suitable for outdoor use.

  3. Apply broom finish

    Once the concrete has set slightly, use a broom to create a non-slip surface. Ensure the texture is consistent across the area.

  4. Check slope for drainage

    Verify that the surface slopes away from the house, using a level to ensure proper drainage.

6Confirm the patio, stoop, and porch are no more than 1-1/2 inches from the house slab——3 steps

  1. Measure height difference

    Use a tape measure to check the height difference between the house slab and the patio, stoop, and porch.

  2. Adjust if necessary

    If the height difference exceeds 1-1/2 inches, plan for adjustments such as adding or removing material.

  3. Document measurements

    Record all measurements for future reference and to ensure compliance with design specifications.

7Ensure no exposed aggregate is present in any area——3 steps

  1. Inspect surface

    Visually inspect the entire slab for any areas where aggregate is exposed.

  2. Repair exposed areas

    Use a patching compound to cover any exposed aggregate, ensuring a smooth finish.

  3. Verify repairs

    Check repaired areas to ensure they blend seamlessly with the surrounding surface.

8Inspect for cracks or displacement and ensure none are present——3 steps

  1. Conduct visual inspection

    Walk the slab and visually inspect for any cracks or signs of displacement.

  2. Measure crack width

    If cracks are found, use a crack gauge to measure their width and determine if they exceed acceptable limits.

  3. Plan for repairs

    If necessary, plan for crack repairs using appropriate methods such as epoxy injection or concrete patching.

9Spread excess 57-stone in the driveway cut——3 steps

  1. Transport 57-stone

    Use a wheelbarrow to transport 57-stone to the driveway cut area.

  2. Spread stone evenly

    Use a rake to spread the stone evenly across the driveway cut, ensuring a uniform layer.

  3. Compact the stone

    Use a plate compactor to compact the stone, providing a stable base for the driveway.

10Move excess concrete runoff to the driveway cut——3 steps

  1. Collect excess runoff

    Use shovels to collect excess concrete runoff from the slab area.

  2. Transport to driveway cut

    Transport the collected runoff to the driveway cut using wheelbarrows.

  3. Spread and level runoff

    Spread the runoff evenly in the driveway cut, using a rake to level it.

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Jon Engquist
Jon Engquist

Founder of Subtrak · Twenty years in commercial roofing operations

“One session and this template becomes how your company actually does the work, with a name and a date on every step.”

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