Tel: 07722 589015

Email rachel@greenboxassociates.co.uk

What We Do

Passivhaus Design

Thermal bridge modelling

We can help get your new or existing buildings to meet or get close to the Passivhaus Standard. We have worked on single homes, multi-family blocks of flats, large estates, schools, care homes and a mosque.

We can work with you from design stage through to post completion, including managing quality control on site and certification.

We are experts in using Passive House Planning Package (PHPP) and use Design PH to model and design Passivhaus.

Thermal bridges occur at the junctions of buildings, often when two different types of construction meet and there is less insulation. Thermal or cold bridges can cause heat loss and condensation if not properly designed. 

We can model 2D thermal bridges using Flixo software, and optimise junctions and connections to reduce heat loss and minimise condensation or mould risk. 

Bespoke psi value calculations can be used on both PHPP and SAP 10 assessments and will have a significant impact on heat loss. 

cantilever floor 1
cantilever floor

New builds

Existing homes

We have experience of working on single family homes and large multi-residential and non-residential developments. 

From pre-planning design to post completion monitoring we can assist you on your project. 

We use PHPP and SAP 10 modelling to support the design process and provide documentation for planning and building control 

As PAS 2035 retrofit co-ordinators and AECB CarbonLite trained, we can help you develop a whole house retrofit plan for your building, with step-by-step stages to improve energy efficiency, improve comfort and move away from fossil fuels. 

We have worked with landlords, architects and homeowners to improve existing stock from a single listed home to a whole estate approach.

PHPP is a powerful tool to model buildings to understand the impact of mesasure to allow cost effective decisions to be made

Post Occupancy Monitoring

Planning support

Once you have constructed your building we can help monitor your building using data loggers to make sure its performing as designed. We have experience in statistical programming and can analyse large data sets to produce graphs and reports. 

We have provided this service for Local Authorities and Housing Associations to check new housing meets its design standards. 

Many planning authorities ask for more energy efficient homes compared to just meeting building regulations.

Some Local Authorities such as Winchester City Council now require Energy Use Intensity (EUI) calculations which align with the Low Energy Transformation Institute (LETI) standard. This requires the use of predicted energy modelling tools such as PHPP. 

We can help with energy and sustainability statements, using both PHPP and SAP 10 to provide energy calculations and carbon emissions reduction calculations. 

We have experience of the London Plan and submitting compliant energy statements. 

Sample energy statement