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Batt & Roll Insulation Verification Checklist

Essential Checklist+

Complete these critical checks before approving the work or proceeding to the next construction stage.

✓15 Inspection Points
✓5 Verification Categories
✓Measurement & Planning+
  • Run length and height/span for every wall, ceiling/attic plane, and floor plane were measured on site, not taken from a floor plan alone.
  • Actual on-center stud/joist spacing was confirmed by measuring the framing directly, not assumed from a standard 16 in default.
  • Dimensions were entered in consistent units — all feet or all meters, not mixed.
✓Product Selection+
  • R-value selected meets or exceeds the local energy code minimum for the climate zone and application (wall/ceiling/floor), not just a generic default.
  • Batt/roll width matches the actual on-center framing spacing (15 in for 16 in o.c., 23 in for 24 in o.c., or the correct custom width).
  • Facing (unfaced, kraft, foil, or encapsulated) is appropriate for the climate zone's vapor-control requirements and the assembly's dew-point location.
  • Product thickness matches the actual cavity depth without needing significant compression to fit.
✓Quantity & Purchasing+
  • Wastage allowance (typically 5-15%) was applied on top of the real bay-counted total, not used to replace it.
  • The final batt/roll quantity including wastage — not the raw bay-counted total — was used for purchase.
✓Installation+
  • Batts/rolls are fitted to fill the full cavity depth without compression — a compressed batt loses R-value roughly in proportion to how much it's squeezed.
  • Batts are cut to fit around electrical boxes, plumbing, and blocking rather than compressed or stuffed around them, which leaves voids.
  • No gaps, overlaps, or compressed corners are left at the top/bottom plates or at adjoining bays — these are the most common sources of real-world heat loss despite a correct material quantity.
  • Recessed lighting, exhaust fans, and other heat-producing fixtures maintain the manufacturer's required clearance from insulation unless rated IC (insulation contact).
✓Safety & Final Check+
  • Skin, eye, and respiratory protection (long sleeves, gloves, eye protection, a dust mask or respirator) was used when handling fiberglass or mineral wool.
  • Soffit and ridge/gable vents in an attic were not blocked by insulation — baffles were used to maintain the required airflow path.
Full QC Checklist+

Verify measurement, product selection, quantity, installation, and safety before closing in walls, ceilings, or floors.

✓27 Inspection Points
✓5 Verification Categories
✓Measurement & Planning+
  • Run length and height/span for every wall, ceiling/attic plane, and floor plane were measured on site, not taken from a floor plan alone.
  • Actual on-center stud/joist spacing was confirmed by measuring the framing directly, not assumed from a standard 16 in default.
  • Any area with a non-standard (custom) framing spacing had its real spacing and matching product width entered, not forced into a 16/24 in preset.
  • Door, window, and other large openings were identified and their combined area recorded for the Openings field where they make up a meaningful share of a run.
  • Dimensions were entered in consistent units — all feet or all meters, not mixed.
  • Separate area rows were used for sections with genuinely different R-value, framing spacing, or application (wall vs. ceiling vs. floor) rather than averaging them into one row.
✓Product Selection+
  • R-value selected meets or exceeds the local energy code minimum for the climate zone and application (wall/ceiling/floor), not just a generic default.
  • Batt/roll width matches the actual on-center framing spacing (15 in for 16 in o.c., 23 in for 24 in o.c., or the correct custom width).
  • Facing (unfaced, kraft, foil, or encapsulated) is appropriate for the climate zone's vapor-control requirements and the assembly's dew-point location.
  • Where unfaced insulation is used and a separate vapor barrier is required by code or climate, the vapor barrier is specified and ordered alongside the insulation.
  • Product thickness matches the actual cavity depth without needing significant compression to fit.
  • Fire- and sound-rating requirements (party walls, garage separations) were checked against the chosen product, not assumed satisfied by any batt.
✓Quantity & Purchasing+
  • Wastage allowance (typically 5-15%) was applied on top of the real bay-counted total, not used to replace it.
  • The final batt/roll quantity including wastage — not the raw bay-counted total — was used for purchase.
  • Product was ordered from the same production batch/lot where visual or performance consistency matters.
  • Staples, netting/support wire (for unfaced batts), and vapor barrier tape were included in the order if not already on hand.
✓Installation+
  • Batts/rolls are fitted to fill the full cavity depth without compression — a compressed batt loses R-value roughly in proportion to how much it's squeezed.
  • Batts are cut to fit around electrical boxes, plumbing, and blocking rather than compressed or stuffed around them, which leaves voids.
  • No gaps, overlaps, or compressed corners are left at the top/bottom plates or at adjoining bays — these are the most common sources of real-world heat loss despite a correct material quantity.
  • Faced batts are stapled by their flanges to the face or inset-stapled to the sides of the framing per the product's installation instructions, not left loose.
  • Vapor barrier (where used) is installed on the correct side of the assembly for the climate zone, with seams taped and no punctures left unsealed.
  • Recessed lighting, exhaust fans, and other heat-producing fixtures maintain the manufacturer's required clearance from insulation unless rated IC (insulation contact).
✓Safety & Final Check+
  • Skin, eye, and respiratory protection (long sleeves, gloves, eye protection, a dust mask or respirator) was used when handling fiberglass or mineral wool.
  • Adequate ventilation was maintained in the work area during installation, especially in enclosed attic or crawl space work.
  • Soffit and ridge/gable vents in an attic were not blocked by insulation — baffles were used to maintain the required airflow path.
  • The finished installation was visually inspected for full cavity fill, no visible gaps, and no compressed sections before closing in with drywall or subfloor.
  • Combustion appliances, flues, and recessed fixtures retain their required clearance from insulation per the manufacturer and local code.
Inspection Notes+
Use the latest approved drawings, specifications, and site measurements.
Complete all critical checks before proceeding to the next work stage.
Record deviations and confirm rectification where required.

Related Calculators & Guides

Batt & Roll Insulation CalculatorOpen the related calculator and verify the current project inputs.

FAQ

Use it after collecting the project inputs and again before approving or closing the relevant work stage.
No. It supports verification but does not replace approved drawings, specifications, codes, manufacturer requirements, or professional inspection.