YOUNG DESIGN BUILD
Passive House Design & Build Energy Efficient School Buildings
Client: Holy Rosary Primary School
Location: Old Court Avenue, Ballycragh, Dublin 24. The existing school currently
has more pre-fabricated temporary classrooms than permanent
classrooms.
Client Brief: The brief was to provide three permanent classrooms for 75 students
and staff to a high energy efficient standard with low maintenance
requirements.
Outcome: Young Design Build adopted the Passiv Haus standard for the project
and successfully delivered a state of the art building which centred on
providing a conducive learning environment for the schools students.
This was achieved by surpassing current building standards using
proven green building practices and the following building principles:
• External Envelope: Highly insulated floor slab, external walls &
roof providing u-values less than 0.15 (current building standards
require a u-value of 0.27).
• Window System: Triple glazed aluminium clad timber windows
with an overall u-value less than 0.90 (current systems have
u-values in the region of 1.1 to 1.4).
• Air Tightness: Often overlooked in new buildings, but air
tightness is curcial to keeping the warmth inside and the cold
outside maximising the benefits of solar gain. This is achieved
using high quality air tightness products which are carefully
installed to ensure their effectiveness.
• Mechanical Ventilation: As the building envelope is completely
air tight the air inside the classrooms needs to be changed using
Heat Recovery Ventilation. Stale air is extracted using low voltage
fans within a complex unit which recovers the latent heat and
transfers it to the fresh filtered air being delivered into the
classrooms.
• Flooring: A Polished concrete floor has been used to provide a
maintanence free flooring solution within the classroom.
YOUNG DESIGN BUILD Rathdaniel, Collon, Co. Louth
Tel: - 041 98 65100 www.youngdesignbuild.ie

YOUNG DESIGN BUILD
Passive House Design & Build Energy Efficient School Buildings
All of these components when successfully delivered provide the perfect
environment for children to learn. As fresh pollen free air is continually being provided
within the classrooms; CO2 levels are brought to a level where fatigue is eliminated;
reducing one of the main reasons classrooms can become disruptive.
Other areas of expertise which Young Design Build can help your school include:
Rainwater Harvesting: Rainwater is recovered from the roof and contained for use
within the classroom toilets reducing the amount of water being used which will
reduce the cost of water charges due to be implemented in the near future.
School insulation scheme. Young Design Build/Henry Young Ltd are SEI registered
insulation installers for the Home Energy Saving Scheme and can help your school
obtain funding for a range of insulation upgrades. Our Unique Contractor ID is 11334.
Detailed information is available on the application process at
http://www.energyeducation.ie/EES/InputSchoolID.aspx.
Young Design Build provide the full solution including Planning Permission, Fire Safety
Certification and Permanent Classroom Buildings and Upgrades to Passiv Haus
Standards.
Young Design Buld Passiv Haus Featured
in May 2009 issue of Construct Ireland
YOUNG DESIGN BUILD Rathdaniel, Collon, Co. Louth
Tel: - 041 98 65100 www.youngdesignbuild.ie