KORE case studies offer an inside look at how our EPS solutions perform in real-world applications. The following case study in Citywest, Co. Dublin, features KORE’s Insulated Foundation System.
Creating an Affordable Passive House Development
Durkan Residential, in cooperation with BBA Architects, set out to create the largest Passive House development in Ireland to date. Made up of 2, 3 and 4 bedroom homes, each new build was designed and constructed to meet the strict Passive House Standard. Located in Citywest, Co. Dublin, the Silken Park development was built in three phases – the first two completed and a third phase under construction since February 2017.
These new build homes in phase 3 feature a single leaf, hollow block construction utilising very high levels of insulation in the foundation and external walls. Featuring KORE’s Insulated Foundation System, each home sits on a fully engineered insulated foundation manufactured from Expanded Polystyrene (EPS). This system virtually eliminates the wall to floor cold bridge by wrapping the entire foundation in a continuous layer of EPS insulation. Engineered in different thicknesses and strengths of EPS, the system can handle heavy internal loads for both domestic and commercial applications.
In addition to KORE’s Insulated Foundation System, the Silken Park development utilised high density Rockwool external insulation, including a sand and cement render. This external insulation and render system acts as an airtight layer, helping to make the home more comfortable with consistent indoor temperatures throughout all seasons.
Designed for Energy Savings
All of the 59 houses in Phase 3 of the Silken Park development will be certified to the Passive House Standard. To achieve this, each home is engineered as a system, ensuring that all parts work together to reduce energy usage while providing a healthy and comfortable indoor environment for its occupants. As with most Passive House builds, Silken Park utilised the Passive House Planning Package (PHPP) during the planning and design phase. Not only did this help build each home as a complete system, it also allowed Durkan Residential to build to a 12-week schedule, helping to further reduce costs.
In addition to the insulated foundation and external wall insulation and render, other materials and products were used to help achieve high energy efficiency standards, including mechanical ventilation with heat recovery, air tightness (including full testing), Knauf roof insulation and Munster Joinery Passive House Certified windows, among other materials and systems.
The Silken Park development offers multiple layouts for those interested:
- 2 bed (terraced/semi-detached)
- 3 bed (terraced/semi-detached)
- 4 bed (semi-detached)
- 4 bed (detached)
Insulation U-Values Achieved
According to Passive House Plus Magazine, Phase 3 of Silken Park (3 bedroom, semi-detached) achieved a BER rating of A2 and a Y-Factor of 0.02, offering a virtually thermal bridge free building envelope. In addition, depending on the layout and the construction of each home, the air changes per hour varied from 0.20 to 0.29 ACH @ 50Pa.
|Product||Building Regulations||U-Value Achieved|
|Floors: KORE Insulated Foundation System||0.21W/m²K||0.10W/m²K|
|External Walls: Rockwool Semi-rigid Insulation + 15mm sand and cement render||0.21W/m²K||0.16W/m²K|
|Roof: 450mm Knauf Ecosse Insulation||0.16W/m²K||0.08W/m²K|
|Windows: Munster Joinery Passive Certified Windows||2.0W/m²K||0.8W/m²K|
This project made use of the following KORE EPS products.
Full details about the Silken Park development at Citywest can be found in issue 20 of Passive House Plus Magazine, including in-depth details for all materials and systems used.
To request a quotation for KORE’s Insulated Foundation System, submit your plans and drawings online by following the link below. KORE’s Insulated Foundation System is suitable for most build types and ground conditions, and is fully engineered to meet your project’s needs and specifications. You can learn more and download our full technical documents by joining the KORE Resource Centre.
Technical Sales Manager
Steven Magee has been a Technical Sales Manager at KORE for 13 years. Steven plays a critical role in helping KORE find and source new business for all of KORE’s range of products. In addition, Steven provides customer service to all potential and current clients on-site and in person. Steven’s deep understanding of product requirements and building regulations makes him a valuable part of the KORE team. You’ll see Steven in the south of the Ireland, including South Dublin, Wexford, Waterford, Cork and Kerry.
You can reach Steven by email or phone at +353 87 246 6749.