Register for FREE to make use of the full features below
Ability to Save, Load and copy your calculations
Save your calculations for future reference.
Reload saved calculations and edit/update as necessary.
Copy calculations to existing / new projects.
Delete individual saved bcalculations or whole projects.
Edit environment settings to suit your particular requirements.
A wider and more comprehensive selection of materials
A far wider selection of different types of materials.
Materials are grouped by type and manufacturer for ease of selection.
Extensive selection of insulated boards and panels.
New materials added as they become available.
Group saved calculations by project reference
Group calculations by project reference for easy retrieval.
Enter project address once for use with future calculations with the same reference.
Enter a unique reference to create a new project and group project calculations.
Delete individual calculations or whole projects.
Share individual calculations with friends and colleages
From within the manager you can view a summary of your saved calculations.
You can share individual calculations via email.
Enter the required email address and add a subject and
the summary of the calculation being displayed will be forwarded.
We can survey and produce accurate 3d CAD drawings of your site.
We will discuss your requirements and provide viable solutions.
We can produce high quality plans and elevations for your planning application.
We work closely with yourselves and the LPA to get full approval.
Comprehensive building control services
We can produce full engineering documents for building control submission.
We will produce accurate energy / environmental calculations.
We will work closely with the building control officer of your choice.
We understand that every project is unique.
Project management of your project
Once your ready to start your project, we can make sure everything runs smoothly.
We work closely with contractors and officials to ensure 'on time completion and in budget'.
We ensure that timetables run smoothly meeting completion dates and deadlines.
Take the worry out of your new build or renovation. Leaves us with the sleepless nights.
Disclaimer: We hope to provide an accurate and useful service, but any reliance you place on the information provided on this site
is strictly at your own risk. Whilst the information and/or specification contained herein is to the best of our knowledge true and accurate we specifically exclude any
liability for errors, omissions or otherwise arising therefrom. Details, practices, principles, values and calculations should be verified as to accuracy and suitability
for the required purpose for use. No responsibility for the accuracy of this data or your use or reference to it is accepted by ChangePlan Ltd or any of the parties involved in creating or providing this service.
U-Value Calculator for calculating U Values in building construction
This Simple U-Value Calculator can help you quickly check your designs
or plans to see if they are likely to achieve BS EN ISO 6946 2007 compliance.
A useful tool for designers, architects and the general public to quickly
calculate the u-values of different elements within a building.
U-Value Calculator Version 3.40
Provided by ChangePlan Ltd www.changeplan.co.uk/u_value_calculator.php U-Value Calculator Version 3.40 Printed:22-10-2019 16:57
We aim to provide this U-Value Calculator
as a handy tool for checking the heat transfer of your building
structure designs and plans. As part of on-going developments
we will be rolling out a series of updates to create a set of
free, useful tools for designers and architects.
Please bookmark this page and share it with anyone who might find it useful.
Changes in this update v3.40:
Improved framed calculation handling.
Ability to share your calculations via email, making them available even for non-registered users.
Intergration with the Heat Loss Calculator enabled.
More materials added and updated.
Changes in update v3.30:
Minor bug fixes and improved error checking.
Improved Mobile Usablity. Improved compression for a smoother experience.
U-Value Calculation notifications added.
Available materials added and updated.
Changes in update v3.20:
Simple Dew Point analysis added.
Individual layer analysis to identify Dew Point location.
Ability to edit environment settings, Internal & External Temps, and Relative Humidity.
Environment settings are saved along with each individual calculation.
Graphical display of temperature gradients displayed on the construction image.
Changes in update v3.10:
New module to manage your projects and calculations.
Reload calculations for printing or editing as necessary.
Copy calculations to existing or new project.
Delete individual calculations or whole projects.
Share a summary of the calculation with colleages & friends via email.
Additional information and materials handling highlighting errors.
Ability to add 2 materials within a framed constrution or partial fill.
Enhanced detection of possible gaps / voids in the construction.
Automatic insertion of airspaces within voids.
Improved labeling of materials including depths of framed construction materials.
Changes in update v3.03:
Bug fixed. Unable to save your calculations even though materials had been entered.
Bug fixed. Saved calculations not being correctly identified as OK after loading.
Improved handling of calculations, grouping by reference.
The number of saved calculations is now displayed next to the Load Calculation icon.
Increased the number of calculations that can be saved to 16.
Changes in update v3.02:
Ability to save your projects so you can return and edit,
Improved handling of studding and other more
complex u-value calculations.
A bigger range of materials grouped by element type to make them easier to find.
Updated Max U-Values defined by the use of the building and the type of construction.
Materials selection filtered by the type of element being calculated.
Image showing a cross sectional representation of the materials within the element.
Improvements to support more browsers and mobile devices.
Changes in update v2.00:
Printer friendly styles for black and white printing (use
print preview to check)
Improved number handling to help stop errors in u value calculation
Hopefully a clearer layout with highlighted Max and corrected
Edit functions should allow you to replace materials and delete items.
Information, print and fail/success icons to show when
the total u value is below max u-value
Ability to save your projects as an ebook, for sharing etc.
New materials are being continually added as they become available.
Ability for users to define and save prefered default settings.
Ongoing support for new mobile devices.
If you have found a bug or have any comments or suggestions, please click the envelope icon on the main page to send us a message.