RSAP+ receives RdSAP 9.93 software approval

To meet the Government's requirements for assessing energy performance in existing dwellings, our RSAP+ software is based on the RdSAP methodology. From time to time, the RdSAP specifications are updated, whether in response to new technological advances, or changes to energy efficiency policies.

We are pleased to announce that our RSAP+ EPC and OA Modules have received approval for use with RdSAP 9.93. The software has been upgraded to support the latest specification which will ensure DEAs produce EPCs against the compliance standards for RdSAP 9.93.

Highlights of changes in RdSAP 9.93

RdSAP 9.93 is a small, incremental update to the methodology:

  • U-values for solid and cavity walls, and certain other walls with insulation have changed – typically improving the Energy Efficiency Rating (EER) of some older properties when compared to results in RdSAP 9.92.
  • Infiltration rate for suspended timber floors with insulation – this will improve EER where present.
  • Carbon Emission Factors for electric systems have improved to 0.25 – this relates to the amount of electricity produced by renewables and how the rate of this electricity production has increased in the UK during the last few years. Essentially, the 0.25 factor means that the software will assume that 25% of the electricity used in the property has been produced using a renewable source. This will typically improve the Environment Impact Rating (EIR) on page two of the EPC.
  • A new recommendation of Cavity Party Wall Insulation (CPWI) has been added. This will appear when an unfilled cavity party wall is identified and the measure generates a 1 SAP point rating uplift and sufficient cost savings.
  • A new transaction type of Stock Condition Survey – this can now be used where appropriate.

Typically, this new methodology will show improvements in ratings on the EPC for older traditional build properties with electrical heating and water heating.

RdSAP 9.93 – Date TBC, however, we believe this is likely to be 19th November 2017

New cross-platform RSAP+ Software now available!

For those of you who don’t know, our RSAP+ Software is an online platform which combines data collection, management and storage. RSAP+ gives energy assessors the ability to carry out EPC calculations and certification lodgements online and in line with the RdSAP methodology.

Developed by our in-house team at Stroma Software, we are also excited to release our updated RSAP+ Software which is now available for download.

Our latest version of RSAP+ enables users to access the software via desktop devices (with Windows 10 installer), and Android and iOS systems. Mac compatibility is currently in development, but we will be releasing another update soon to support Mac devices.

Please also note that the existing RSAP+ platform that is compatible with Windows 7 and 8 will be supported into the future.

By doing this Stroma has ensured that all members will have access to a user-friendly application, on as many devices as possible.

  • All Windows 10 devices (PC, Tablet, Phone)
  • Android devices (Tablet and Phone)
  • Apple iOS devices (Tablet and Phone)

There is no additional cost for using mobile devices, which means our members have true freedom of choice on how they wish to perform their EPC assessment.

The new software also features many additional features which are exclusive to this new platform, many of which are user-suggested content.

  • All existing PC features now on all mobile devices
  • Ability to work on multiple surveys at once
  • Floorplan Sketch and Send – via our service with FloorplansUsketch - Sign up for this service today for free (fees for using the service apply)
  • New search facility for all completed and started surveys – fast and easy even on mobile devices
  • Copy and paste functions for storeys, walls, floors and roofs
  • Plus, many more features

All RSAP+ platforms currently conform to RdSAP 9.92 methodology, but will be automatically updated to RdSAP 9.93 on the date set by the Government.



If you have any further queries regarding the update to RSAP+ Software, please contact our team on 01977 665420 (ext. 614).




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