LEAP
Mark Siddall is an award winning architect and energy consultant specialising in low energy and Passivhaus design. He also provides consultancy strategic analysis troubleshooting and project enabling for clients design teams and constructors. As an architect he has a keen interest in closing the energy performance theory/reality gap that is prevalent in the UK. By utilising an integrated design ethic he seeks to deliver cost effective low energy buildings. The quality assurance systems that underpin the Passivhaus Standard serve to inform aspects of his approach. He assists with the delivery of Certified Passivhaus Designer Courses by the CarbonLite Programme and by the University of Strathclyde. He is also a technical advisor to the Passivhaus Trust.
9 Briardene
Durham
Durham
GB
DH1 4QU
Sole trader
January 28, 2026
Building design/project management
CarbonLite Graduates
[email protected]
7795031700
http://www.leap4.it
Mark Siddall
,Architect
Whether it is a new build or a retrofit, as an AECB certifier I provide: Design reviews and advice Site inspections and reports PHPP calculations 2D Thermal bridging calculations
CarbonLite Graduates
[email protected]
7795031700
Large projects (>£1m) National , Small projects: North East England
Retrofit for the Future: Coach Road
aim: The Technology Strategy Board funded the Retrofit for the Future (RftF) programme with the intention of refurbishing homes to achieve an 80% reduction in carbon dioxide emissions. scope: Each house types was chosen because of their relevance at both a regional and national level. Each design adopted a fabric first methodology using the quality assurance tools and mechanisms associated with Passivhaus design. Many RftF projects Retrofitted just one home for the available capital. In this case it was possible to refurbish two homes within the same budget. To achieve this a highly integrative design strategy was adopted which enabled the maximum value to be derived from each chain of decisions. measures: Super insulation Minimisation of thermal bridging Airtightness Ventilation heat recovery Design Space Heating Demand: 39 kWh/m2/a Design Primary Energy Demand: 100 kWh/m2/a monitoring: Pre-Retrofit Air Leakage: 11.9 m3/h/m2 (@50pa Post Retrofit Air Leakage: 0.94 m3/h/m2@50pa.
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Phone:
0845 4569773 / 01559 370908
Email: [email protected]
Address:
PO Box 32, Llandysul
SA44 5ZA
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