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Air Barrier Continuity

Air Barrier Continuity. What is the Building Envelope?. 5 Elements Roof Floor/ Foundation Walls Doors Windows. 3 Functions Insulation Barrier Air Water Vapor Dust Pests Structural Durability.

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Air Barrier Continuity

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  1. Air Barrier Continuity

  2. What is the Building Envelope? 5 Elements Roof Floor/ Foundation Walls Doors Windows 3 Functions • Insulation • Barrier • Air • Water • Vapor • Dust • Pests • Structural Durability Building envelope offers three functions: insulation, barrier and structural durability

  3. What’s Building Envelope manufacturer know about High Performance Buildings $5 million Invested to Prove HPBS – Driving toward Net Zero “The Building System Approach”

  4. UNDERSTANDING THE BUILDING SYSTEM APPROACH FOR ENERGY EFFICENCY & SUSTAINABLITY • Energy focus by most is interior centric, target easy payback • TRUE SUSTAINABLE program is a WHOLISTIC APPROACH • Both INTERIOR AND EXTERIOR must be considered • TREMCO UNDERSTANDS and can do both Roof / BE Asset Management Maintenance Programs Sustainable Systems Cool Roof Calculations Air Leakage with true energy efficiency rate of return payback

  5. Importance of Air Barrier Continuity Energy Efficiency Health Safety Durability Comfort

  6. Uncontrolled Air Leakage • Defined as uncontrolled migration of conditioned air through the building envelope • Costly to heat and air condition • Drafty and uncomfortable • Poor indoor air quality • Increased building deterioration • Occupant complaints

  7. Diagnosing the Problem Building envelope assessment Depressurization testing Locate air leakage Infrared thermography

  8. Sealing the Pathways • Top • Roof/wall intersections, mechanical, penthouse doors/walls, HVAC, roof penetrations • Bottom • Exhaust/intake vents, soffits/ground floor access doors, service penetrations, core wall to floor slab • Vertical shafts • Stairwell fire doors; fire hose cabinets; plumbing, electrical, cable and other penetrations within service rooms; elevator rooms; garbage chute perimeter and access hatches; hallway pressurization grill perimeters

  9. Sealing the Pathways • Outside walls and openings • Weatherstrip windows, doors, including balcony/patio doors and seal window trim; exhaust fans and ducting; service penetrations; baseboard heaters; electrical receptacles; baseboards • Compartmentalization • Vented mechanical rooms; garbage compactor room; emergency generator room; high voltage rooms; shipping docks; elevator rooms; workshops

  10. Benefits of Air Barrier Retrofit Controls movement of air into and out of the building Reduces heat loss Reduces dust, mold and pollutants in the building Reduces noise and odors Reduces condensation, mold and mildew Improves overall building envelope and building performance

  11. Benefits of Air Barrier Retrofit • “Continuous air barrier systems can reduce air infiltration by more than 60 percent and energy consumption to the building envelope by 40 percent compared to buildings typical air leakage.” National Institute of Standards and Technology (NIST), Investigation of the Impact of Commercial Building Envelope Airtightness on HVAC Energy Use • Rule of thumb - .10 per square foot average savings annually.

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