Retrofit PAS 2035 & Thermal Improvements

GDS can provide Retrofit Assessments and undertake the roles of Retrofit Coordinator & Retrofit Designer in accordance with the PAS2035 requirements, offering a professional and experienced service to either small or large scale retrofit programmes.


GDS have gained a wealth of experience working with social landlords in retrofitting their existing housing stock, especially under Government SHDF funding. As a practice, we can provide Retrofit Assessments with full SAP modelling to provide a Retrofit Strategy for the property.

In addition, we can provide full Retrofit Design service specialising in detailing hard to treat junctions, with supporting PSI calculations to overcome thermal bridge risks.

GDS can also undertake Retrofit Coordination Services in accordance with PAS2035 requirements and are accredited by TrustMark. This can be provided on either small scale deep retrofits or large scale estate wide improvement programmes to reduce energy consumption and running costs across the stock.

Retrofit PAS 2035 & Thermal Improvements

As Building Surveyors, we fully understand the importance of detailing building elements and are experts in construction technology, so can detail interactions between materials correctly. We have a deeper understanding of building mechanics and can design out the risks that increased airtightness and thermal improvement can exacerbate.