Existing buildings do not require a target co2 emissions rate however they do require a target u value to meet for building elements walls floors and roofs.
Flat roof u values building regulations.
The required u value will depend on the location of the project england scotland or wales type of building domestic or non domestic and the application floor wall or roof.
Building regulations standards and u values.
Greek revival style apartment building benefits from.
Therefore the less heatloss.
To comply with part l of the building regulations 2010 all roofs to rooms except those in unheated buildings should be thermally insulated to a maximum u value of of 0 18 w m k.
These are expressed as a u value which needs to be achieved.
The tables below show the suggested u values in england wales and scotland.
The target u value for flat roofs on existing buildings other than dwellings are shown in table 4 below.
These things will affect the timing cost and overall running of your project.
U value of a flat roof.
Make sure your comply with flat roof building regulations.
Consequently the higher the u value the more heatloss you have in the home.
A lower u value indicates better insulation properties hence u value requirements usually specify a maximum value.
Get a u value calculation from our free online u value calculator or our technical department.
Insulation for flat roofs pitched roofs and balconies and terraces.
U values are important because there are certain standards according to the building.