U-Value Calculations

To meet Building Regulations Part ‘L’

The U-value represents the thermal conductance of a given structure, for example an entire roof. The lower the U-value achieved – the better the level of insulation.

The R-value represents the thermal resistance of a given component within the structure, for example an insulation product. The higher the R value rating – the better the product.

Below are just a few examples of how different U-values can be achieved, we have many more on file and U-value calculations can be done for any specific type of construction.

SuperFOIL LABC Registered System Approval

SuperFOIL SF19 LABC Registered Details

SF19 Sales Flyer
SF19 Install Flyer
U Value Calc
SF19 Sales Flyer
SF19 Install Flyer
 
 

SuperFOIL SF40 LABC Registered Details

SF40 Sales Flyer
SF40 Install Flyer
U Value Calc
SF40 Sales Flyer
SF40 Install Flyer
U Value Calc

LABC Details

LABC
BBA
BBA
BBA
 
 
   

SuperFOIL “Duet” Solutions

“Duet” solutions are a combination of two or more layers of SuperFOIL products over or under the rafters to achieve specific U-values.

Below, you will find a grid containing U-values, just click on a U-value to go directly to a U-value calculation prepared by a certified SAP assessor which can be used in building control application.

Over Rafter SF19 SF40 SF60
SF19 0.22 0.17 0.14
SF40 0.17 0.14 0.12
SF60 0.14 0.12 0.11
SFUF 0.31 0.22 0.18
Under Rafter SF19 SF40 SF60
SF19 0.22 0.17 0.14
SF40 0.17 0.14 0.12
SF60 0.14 0.12 0.11
SFUF 0.31 0.22 0.18
Over/Under Rafter SF19 SF40 SF60
SF19 0.22 0.17 0.14
SF40 0.17 0.14 0.12
SF60 0.14 0.12 0.11
SFUF 0.31 0.22 0.18

For more roof, wall and floor U-value calculations please contact us