SAP CALCULATIONS FOR EXTENSIONS

SAP Assessments for building extension projects

SAP Calculations > Extensions


Information about SAP calculations and extensions

Contrary to what some may believe, SAP Assessments are also a requirement for building extensions.

SAP Assessments are used to determine the energy efficiency of the extension by taking into consideration the thermal insulation of the building materials, the area of windows, roof windows, and doors that are part of the extension.

What Does SAP Calculations Look At For Extensions?

Whether your extension building project is for a conservatory or an outside porch extension of the building, SAP assessments look into the energy efficiency thermal and co2 emissions impact on the rest of your dwelling similar to when you carry out SAP calculations for new developments and conversions.

There are a few aspects that are unique to extensions that SAP assessments look into, these areas of are:

  • The condition of the thermal materials used in the construction of the extension
  • The condition of the windows, roof windows and doors of the extension
    Heating and lighting in the building
  • The effective thermal separation between the extension and the building

The SAP Assessment is used to calculate the performance of the extension’s co2 emissions rate, which should not exceed that of the building that it is attached to.

Bringing light and efficiency into your building

One common goal for many homeowners is to gain as much light as possible by adding more glazing to an extension. However, current regulation states that glazing cannot account for more than 25% of the new floor area due to the potential heat loss and Co2 emissions.

At Briary Energy we want to ensure that your extension meets your every need
We start by creating an energy model of the property and calculate the total Co2 emissions.

We create a notional model that comes with a standard amount of insulation value and glazing

We take into consideration other heating elements in the home including replacement boilers which help offset your Co2 emissions

If the extension has a lower emission rate when compared to the notional extension, it will conform to meet the required SAP listing. Additionally, if there are other heating elements in the room, this will help offset the heat loss.

Why Choose Briary Energy?

  • Our EPC Certificate service is complete, with no hidden charges!
  • You won’t be charged more for Thermal Bridge Calculations
  • You will get a PEA
  • We won’t give you a failed calculation
  • We will always allow a retest
  • Prices are based on single dwellings
  • We can put packages together
Briary Energy SAP Calculations
briaryenergy.co.uk extension

Contact us today to talk about your upcoming project – it could save you on average £800* per plot!