Above Grade ICF Walls Interim Summary - Details & Water Management Strategies Building Green With Concrete October 22, 2015 Presented by Brian Hubbs, P. ENG d

Overview History of ICF Above Grade ICF Research Future Research Air & Water Testing Thermal Modelling Future Research

RDH – What We Do Existing Buildings New Construction Research, Energy & Forensics Product Development & Testing Diagnostic Testing Water Penetration Air Leakage

ICF Foundations – Below Grade ICF – Traditionally below grade Good at insulation

ICF Walls – Above Grade Recent expansion to above grade

ICF Walls – Typical Installation Detail

ICF Walls – Interfaces and Unknowns So many more interfaces above grade more complex. Or are they? We’ll see

ICF Walls – Test Objectives Test the performance of several current practice details Develop and test economical assembly details Minimize need for additional air and moisture barriers materials if possible Develop details for future adoption into building codes

ICF Walls – Phase 1 6 common practice window interface details Commonly accepted window interface details Get a current performance benchmark

Air & Water Testing ASTM E283 – Air Leakage ASTM E331 – Water Penetration P F + - Air leakage @ 75 Pa Water Test at 150, 300, 700 Pa, and beyond

Air & Water Testing RDH Test Wall

ICF Walls – Phase 1 Module 1 – Internal Buck - Unmodified EXTERIOR Result – Water Pass up to 150 Pa - Bad 0.0480 L/sm2 @ 75 Pa EXTERIOR

ICF Walls – Phase 1 Module 2 – External Buck - Unmodified EXTERIOR Result – Water Fail - All 0.6063 L/sm2 @ 75 Pa EXTERIOR

Module 2 – External Buck Unmodified Result – Water Fail - All 0.6063 L/sm2 @ 75 Pa

ICF Walls – Phase 1 Module 3 –Vinyl Buck - Unmodified EXTERIOR Result – Water Fail - All 0.0882 L/sm2 @ 150 Pa EXTERIOR

ICF Walls – Phase 1 Module 4 – Internal Buck - Modified EXTERIOR Result – Water Pass up to 150 Pa - Bad 0.0480 L/sm2 @ 75 Pa EXTERIOR EXTERIOR

ICF Walls – Phase 1 Module 5 – External Buck - Modified EXTERIOR Result – Water Fail - All 0.6063 L/sm2 @ 75 Pa EXTERIOR

ICF Walls – Phase 1 Module 6 –Vinyl Buck - Modified EXTERIOR

ICF Walls – Phase 1 Phase 1 Testing Results Air Test Water Test Rank ?

ICF Walls – Phase 1 – What We Learned Typical window installation methods do not have an effective, defined layer of weather-tightness (WRB) Water can penetrate into the foam and drain within exterior insulation layer Concrete is the most air and water tight element Achieving a good tie-in to concrete is important if conventional air and water resistant sheathing membrane WRB is omitted Air Test Water Test Rank ?

ICF Walls – Phase 1 – 9000 Pa Test

ICF Walls – Phase 2 – What We Want to Learn Cost effective ways to tie into concrete and potentially eliminate the need for a sheathing membrane Test other proprietary systems Compare systems to code standard sheathing membrane installation (WRB) Air Test Water Test Rank ?

ICF Walls – Phase 2 Module 1A – Internal w/ Buck Flash INTERIOR EXTERIOR

ICF Walls – Phase 2 Module 1A – Internal w/ Buck Flash

ICF Walls – Phase 2 Module 1B – External w/ Buck Flash INTERIOR EXTERIOR

ICF Walls – Phase 2 Module 1B – External w/ Buck Flash

ICF Walls – Phase 2 Module 2A – Direct to Concrete INTERIOR EXTERIOR

ICF Walls – Phase 2 Module 2A – Direct to Concrete

ICF Walls – Phase 2 Module 2A – Direct to Concrete Can anyone tell me what 20 in of water is Pass to 5000 Pa!! Less than 0.0039 L/ms2 @ 75 Pa

ICF Walls – Phase 2 Module 2B – EIFS Basecoat INTERIOR EXTERIOR

ICF Walls – Phase 2 Module 2B – EIFS Basecoat

ICF Walls – Phase 2 Module 2C – Benchmark – Sheathing Paper INTERIOR EXTERIOR

ICF Walls – Phase 2 Module 2C – Benchmark – Sheathing Paper

ICF Walls – Phase 2 Module FB – Proprietary Foam Buck INTERIOR EXTERIOR

ICF Walls – Phase 2 Module FB – Proprietary Foam Buck

ICF Walls – Phase 2 Phase 2 Testing Results Air Test Water Test

ICF Walls – Phase 2 Thermal Modelling Two dimensional heat transfer simulations Finite element analysis Lawrence Berkeley National Laboratory R20

ICF Walls – Thermal Modelling Air Test Water T

ICF Walls – Phase 2 – What We Learned Conventional ICF window bucks should be used in conjunction with conventional sheathing membrane systems (WRB) Modified ICF windows bucks with direct tie-in to concrete core performs best and should provide equivalent performance to typical sheathing membranes if results can be replicated full scale in the field. The simpler the detail the better All modules perform better than the control WRB Air Test Water Test Rank ?

ICF Walls – Next Steps Objectives Prove interfaces are field buildable Repeatable results on multiple sites Ensure concrete core is water and air tight in the field Test and develop additional details (base of wall) Move towards a best practice guide Air Test Water Test Rank ?

ICF Walls – Next Steps Field Testing Whole Building Air Leakage Refine Details & Assemblies

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