Waterproofing Membrane Installation Checklist
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Pre-Installation & Site Preparation
Checks and tasks related to site conditions and surface preparation prior to membrane application.
Project Number
Scheduled Installation Date
Existing Conditions Report (describe site conditions)
Substrate Type (e.g., Concrete, Wood)
Site Hazards Identified (check all that apply)
Surface Temperature (°C/°F)
Ambient Temperature (°C/°F)
Weather Conditions
Description of any necessary surface repairs required
Material Verification & Handling
Ensures correct membrane type, quality, and proper storage and handling procedures are followed.
Membrane Type Verified?
Batch Number(s) Verified
Membrane Manufacturing Details
Material Certificates
Storage Conditions Verified?
Storage Condition Notes (if No)
Number of Rolls/Units Received
Substrate Preparation & Priming
Details the necessary steps to ensure the substrate is suitable for the membrane, including cleaning, repair, and priming.
Describe Existing Substrate Condition (e.g., concrete, wood, metal)
Substrate Cleaning Required?
Substrate Moisture Content (%)
Note any repairs needed to the substrate (cracks, voids, delamination)
Substrate Repair Method
If 'Other' selected in Substrate Repair Method, describe repair:
Primer Type
Primer Application Rate (e.g., ft²/gallon)
Notes on Primer Application (e.g., weather conditions, dry time)
Membrane Installation & Overlap
Focuses on the correct application and overlapping of the waterproofing membrane sheets.
Sheet Temperature During Installation (minimum)
Ambient Temperature During Installation (minimum)
Membrane Orientation (roll direction)
Minimum Overlap Width (longitudinal)
Minimum Overlap Width (transverse)
Description of any deviations from manufacturer's overlap recommendations and justification
Methods used to secure membrane during installation (select all that apply)
Photo Evidence of Proper Overlap & Positioning (at least 2 photos)
Seam Welding / Adhering (If Applicable)
Covers procedures for seam welding (for heat-welded membranes) or adhesive application (for adhered membranes).
Membrane Welding Method (If Applicable)
Welding Temperature (if applicable)
Welding Pressure (if applicable)
Overlap Width (Welded Seams) - Minimum (inches/mm)
Adhesive Type (If Applicable)
Adhesive Manufacturer & Product Name (If Applicable)
Seam Inspection Criteria (Check all that apply)
Upload Photos of Representative Welds/Adhesive Application
Detailing & Penetration Flashings
Addresses critical detailing areas and how penetrations (pipes, vents, etc.) are properly flashed.
Penetration Type Identified?
Number of Penetrations Flashed
Flashing Material Used?
Details of 'Other' Flashing Material (if applicable)
Flashing Lap Over Membrane?
Minimum Lap Length (inches)
Photo of Flashing Detail
Flashing Sealed at Perimeter?
Any Deviations from Standard Flashing Details?
Quality Control & Testing
Covers inspections, testing (e.g., water pressure testing, weld integrity), and documentation.
Wind Uplift Test Pressure (kPa)
Seam Strength Test Result (N/mm)
Visual Inspection - Membrane Defects Observed?
Details of Other Defects Observed (if applicable)
Water Pressure Test Pass/Fail
Details of Water Pressure Test Failure (if applicable)
Date of Water Pressure Test
Upload Photos of Quality Control Checks
Inspector Name
Inspector Signature
Post-Installation & Protection
Actions to be taken after installation to protect the membrane and ensure its long-term performance.
Date of Final Inspection
Observations During Final Inspection (damage, potential issues)
Temperature During Final Inspection (degrees Celsius/Fahrenheit)
Protection Board Installed?
Details Regarding Protection Board Installation (type, condition)
Photos of Installed Membrane and Protection (if applicable)
Client Sign-Off Received?
Contractor Signature (acknowledging completion & protection)
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