Built Environments of NC

Part 1 of 4

(A2LA Cert. No. 7733.01) 04/30/2026 Page 1 of 3 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 BUILT ENVIRONMENTS OF NC, LLC 13 Wright Street Wilmington, NC 28401 Kate Winzler Phone: 910-900-7530 MECHANICAL Valid To: May 31, 2028 Certificate Number: 7733.01 In recognition of the successful completion of the A2LA evaluation process, accreditation is granted to this laboratory to perform the following tests: Test: Test Methods: Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus ASTM C518 Standard Test Methods for Sampling and Testing Fiber- Cement Flat Sheet, Roofing and Siding Shingles, and Clapboards Section 5: Flexural Strength Section 6: Density Section 7: Dimensional Measurements Section 8: Moisture Movement Section 9: Water Absorption Section 10: Moisture Content Section 11: Water Tightness Section 13: Warm Water ASTM C1185 Standard Test Methods for Evaluating Properties of Wood- Base Fiber and Particle Panel Materials Part A: Section 9: Static Bending Section 10: Tension Parallel to Surface Section 11: Tension Perpendicular to Surface Section 12: Compression Parallel to Surface Section 13: Lateral Nail Resistance Section 14: Nail Withdrawal Section 15: Nail-Head Pull-Through Section 16: Direct Screw Withdrawal ASTM D1037 Standard Test Method for Compressive Properties of Rigid Cellular Plastics ASTM D1621 Standard Test Method for Apparent Density of Rigid Cellular Plastics ASTM D1622

Part 2 of 4

(A2LA Cert. No. 7733.01) 04/30/2026 Page 2 of 3 Test: Test Methods: Standard Test Methods for Mechanical Fasteners in Wood and Wood-Based Materials Sections 4-13: Nail, Staple, or Screw Withdrawal Test Sections 14-21: Nail, Staple, or Screw Lateral Resistance Test Sections 22-30: Bolted or Timber Connector Joint Test ASTM D1761 Standard Test Method for Climbing Drum Peel for Adhesives ASTM D1781 Standard Test Method for Determining Corrosive Effect of Combustion Products Using the Cone Corrosimeter ASTM D5485 Standard Test Method for Using Cone Calorimeter to Determine Fire-Test-Response Characteristics of Insulating Materials Contained in Electrical or Optical Fiber Cables ASTM D6113 Standard Test Methods of Conducting Strength Tests of Panels for Building Construction ASTM E72 Standard Test Method for Determining Rate of Air Leakage Through Exterior Windows, Skylights, Curtain Walls, and Doors Under Specified Pressure Differences Across the Specimen ASTM E283/E283M Standard Test Method for Structural Performance of Exterior Windows, Doors, Skylights and Curtain Walls by Uniform Static Air Pressure Difference ASTM E330/E330M Standard Test Method for Water Penetration of Exterior Windows, Skylights, Doors, and Curtain Walls by Uniform Static Air Pressure Difference ASTM E331 Standard Test Method for Water Penetration of Exterior Windows, Skylights, Doors, and Curtain Walls by Cyclic Static Air Pressure Difference ASTM E547 Standard Test Method for Structural Performance of Exterior Windows, Doors, Skylights, and Curtain Walls by Cyclic Air Pressure Differential ASTM E1233 Standard Test Method for Heat and Visible Smoke Release Rates for Materials and Products Using an Oxygen Consumption Calorimeter ASTM E1354 Standard Test Method for Determining the Heat Release Rate of Upholstered Furniture and Mattress Components or Composites Using a Bench Scale Oxygen Consumption Calorimeter ASTM E1474 Standard Test Method for Determining the Heat Release Rate and Other Fire-Test-Response Characteristics of Wall Covering or Ceiling Covering Composites Using a Cone Calorimeter ASTM E1740 Standard Test Method for Performance of Exterior Windows, Curtain Walls, Doors, and Impact Protective Systems Impacted by Missile(s) and Exposed to Cyclic Pressure Differentials ASTM E1886 Standard Test Method for Determining the Drainage Efficiency of Exterior Insulation and Finish Systems (EIFS) Clad Wall Assemblies ASTM E2273 Standard Test Method for Determining Air Leakage Rate of Air Barrier Assemblies ASTM E2357

Part 3 of 4

(A2LA Cert. No. 7733.01) 04/30/2026 Page 3 of 3 Test: Test Method(s): Standard Test Method for Determination of Fire-Test- Response Characteristics of Components or Composites of Mattresses or Furniture for Use in Correctional Facilities after Exposure to Vandalism, by Employing a Bench Scale Oxygen Consumption Calorimeter ASTM F1550 Testing Application Standard (TAS) 201-94 Impact Test Procedures TAS 201 Testing Application Standard (TAS) 202-94 Criteria for Testing Impact & Nonimpact Resistant Building Envelope Components Using Uniform Static Air Pressure TAS 202 Testing Application Standard (TAS) 202-94 Criteria for Testing Products Subject to Cyclic Wind Pressure Loading TAS 203 Standard Test Method for Determination of Combustibility Parameters of Building Materials Using an Oxygen Consumption Calorimeter (Cone Calorimeter) CAN/ULC S-135 Heat Release Rate (Cone Calorimeter Method) ISO 5660-1 Measurement of Low Levels of Heat Release ISO 5660-4