upskilling the trades for the deep retrofit [email protected] title...
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1Milan MADE Expo: 16th March 2019
Upskilling the Trades for the Deep Retrofit Challenge
Tomás O’Leary
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High Performance Buildings
Objective: Train ‘Thinking Fingers’
‘Out of the Blue’ Passive House 2004
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Benefits of AirtightnessEnerPHit
≤ 1.0 ACH@50Proposed nZEB = 5.0 m3/(hr/m2)
o Eliminate drafts and improve comforto Reduce heat losses and energy billso Improve performance of insulationo Increase efficiency of ventilation systemo Enhanced sound proofing
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Benefits of Vapour Control
Vapour TightVapour Open
o Prevent vapour diffusing into envelope
o Reduce risk of condensation and mould
o Improve health of occupantso Protect structural integrity
Image: Green Building Advisor
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Airtightness Ambitions?
nZEB Upper Limit
Current Part L Upper Limit
Mechanical vent needed
Passive House EnerPHit
76543210
Air permeability qE50: m3/hr.m2
Passive House = air changes per hour (ACH) @ 50 Pa
Unassigned Lead Role Assign ‘Champion’
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My pet dog Cooper could achieve an airtightness of < 3!
So, we’re going to need an army of airtightness champions in Ireland
‘Cooper’ the Canny Canine!
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EnerPHit Project at Arbour Hill, Dublin
Objective:
Achieve an airtightness result of < 1.0 ACH @ 50 Pa
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Previous Retrofit at Arbour Hill
n50 ~ 5 ACH
n50 ~ 3 ACH
Block 2 needs to be ~ 4 times tighter!
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How to achieve EnerPHit n50 < 1.0 ACH
Holistic Training
Programme
50% Theory50% Practical+ Pro-Demos
Project Construction
Details
Delivered On-Site
Sync Training with Project
4 days / 4 months
Verify Through Testing
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Step 1: Theoretical Foundation is Critical to Success
Not just ‘what’ to do, but ‘why’ to do it
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Step 2: Hands-on Training Using Models
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Step 3: On-site ‘Pro-Demos’ – External Wall Insulation
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Step 3: On-site ‘Pro-Demos’ – Airtightness Installation
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Step 3: On-site ‘Pro-Demos’ – Mechanical Ventilation
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Step 4: Hands-On Application
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Step 4: Hands-On Application
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Airtightness Starting Point
Walls?
Ceilings?
Floor?
Windows?
Chimney?
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Roof to Party-Wall Connection
Detail:
The challenge The detail The application
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Party-Wall to Floor Connection
The challenge The detail The applicationDetail:
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Airtightness Strategy for Walls
Plaster on masonry Liquid applied connection between wall and floor
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We Did it! Achieved New-Build Passive House Standard
Airtightness applicators (ecofix)
General contractor
Project Architect
Certifier and Trainer
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Arbour Hill 0.58 ACH
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Before During After
Rochestown Avenue 0.76 ACH
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Brooklyn Brownstone 0.38 ACH
Thermographic image – Sam McAfee, SG.Build
1st certified Passive House in
NYC: 2012
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26 Story Passive Tower 0.14 ACH
Tallest Passive House in the world: 2017
Handel Architects NYC Handel Architects NYC
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Getting Beyond Pilots
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Foreman
Electrical Plumbing
Bricklaying
Carpentry
Plastering
National Skills Specification in Nearly Zero Energy Buildings (NZEB)
Launched December 2019
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Thank You!
Tomás O’Leary