Room Areas and Exposed Perimeters

The exposed perimeter, or ‘heat loss perimeter’, of a room or a particular part of a dwelling is the total length of the walls exposed to the exterior.   It is very important that heat loss perimeters are identified correctly because their extent will affect the heat loss calculation and the energy rating of a property.


This is an online course. This means you can study in your own time and at your own pace.


By the end of this course, you will be able to:

  • Identify and use the correct formula to calculate the area and exposed perimeter of a room
  • Identify those features in a room which should be included and excluded when calculating the area and exposed perimeter.
  • Understand how to use approximations for irregular shaped floor areas without making a detrimental effect on the result produced.

Course suitable for: Domestic Energy Assessors and all Residential Surveyors

Course type: Online

CPD Hours: 1

* This course is available at a discounted price of £25 + VAT for existing NHER/SAVA members. Remember to log in to your existing member account when you book. Discount will be applied at the checkout stage.? *

Terms and Conditions

£35Enquire | Book