Ground Floor And Flat Roof U-Values in Part L 2021
07-06-2022
When compared to Part L 2013's requirements, Part L 2021 features lower notional dwelling U - values and tighter limiting U - values.
The values changed for all thermal elements, including ground floors and flat roofs, which are the two main uses for extruded polystyrene insulation (XPS).
Effective from June 2022, Part L 2021 applies in England and is the focus of this blog post. However, changes to Part L in Wales and Section 6 in Scotland have also introduced improvements, with the similar aim of reducing the energy use and carbon emissions associated with the built environment.
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Related Products
Polyfoam Floorboard Standard - For thermal and structural insulation of general and domestic loading ground floors
Polyfoam XPS| Width: | 600 |
| Manufactured in the ...: | 1 |
| Reaction to Fire: | F |
| Application: | Basements, Belo... |
| Recyclability: | 100 |
| Shape: | Rectangular |
| Thickness: | 25, 35, 50, 65,... |
| Material: | Extruded Polyst... |
Polyfoam Floorboard Extra - For thermal and structural insulation of higher loading floors such as public buildings, commercial and industrial units
Polyfoam XPS| Width: | 600 |
| Manufactured in the ...: | 1 |
| Reaction to Fire: | F |
| Application: | Basements, Belo... |
| Recyclability: | 100 |
| Shape: | Rectangular |
| Thickness: | 25, 30, 35, 50,... |
| Material: | Extruded Polyst... |
Polyfoam Floorboard Super - For thermal and structural insulation of very high load floors such as cold stores
Polyfoam XPS| Width: | 600 |
| Manufactured in the ...: | 1 |
| Reaction to Fire: | E |
| Application: | Basements, Floo... |
| Recyclability: | 100 |
| Shape: | Rectangular |
| Thickness: | 50, 60, 80, 100 |
| Material: | Extruded Polyst... |
Polyfoam Roofboard Extra - For thermal and structural insulation of medium traffic flat roofs
Polyfoam XPS| Width: | 600 |
| Manufactured in the ...: | 1 |
| Reaction to Fire: | F |
| Application: | Blue Roof, Conv... |
| Recyclability: | 100 |
| Shape: | Rectangular |
| Thickness: | 50, 70, 100, 13... |
| Material: | Extruded Polyst... |
Polyfoam Roofboard Super - For thermal and structural insulation of heavy traffic flat roofs such as car parks
Polyfoam XPS| Width: | 600 |
| Manufactured in the ...: | 1 |
| Reaction to Fire: | E |
| Application: | Blue Roof, Car ... |
| Recyclability: | 100 |
| Shape: | Rectangular |
| Thickness: | 50, 60, 80, 100 |
| Material: | Extruded Polyst... |
Polyfoam Slimline Zero Membrane - For use as a separating and water flow reducing layer in inverted roof constructions used in conjunction with Polyfoam Roofboard Extra or Super
Polyfoam XPS| Width: | 1500 |
| Manufactured in the ...: | 1 |
| Reaction to Fire: | E |
| Application: | Blue Roof, Conv... |
| Recyclability: | 100 |
| Shape: | Rectangular |
| Thickness: | 1 |
| Material: | Polypropylene |
Polyfoam Upstand Board - For thermal insulation and protection of roof upstands and papet walls
Polyfoam XPS| Width: | 600 |
| Manufactured in the ...: | 1 |
| Reaction to Fire: | F |
| Application: | Blue Roof, Conv... |
| Recyclability: | 100 |
| Shape: | Rectangular |
| Thickness: | 6, 50 |
| Material: | Extruded Polyst... |
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