Flat Roof U Value Building Regs

Sometimes the excitement of starting a new construction project or building venture can lead you to forget about the finer details such as planning permission and local building regulations.

Flat roof u value building regs.

These can be supported with a detailed report. The limiting u value the maximise u value which cannot be exceeded required under current building regulations for the roof is 0 20w m. Building regulations for insulating a roof heat rises and therefore the building regulations requirements for heat loss through roofs are more stringent than those for walls. Wales can get away with having a higher u value than england and scotland because it is typically less cold.

For example scotland buildings will need a lower u value due to the colder weather than england. Ventilation is required for these roofs. New roofs thermal. U value of a flat roof.

We provide u value calculations to show compliance with current building regulations standards and best practice. The easiest way of getting a u value calculation is by using our free online u value calculator. The target u value for flat roofs on existing buildings other than dwellings are shown in table 4 below. Make sure your comply with flat roof building regulations.

Warm deck the type of insulation for this is usually of a rigid type and the thickness will vary depending on the manufacturer s specifications. These things will affect the timing cost and overall running of your project. For more information see our articles and how to videos below. 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.

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. U values are important because there are certain standards according to the building regulations and standards depending on location. A lower u value indicates better insulation properties hence u value requirements usually specify a maximum value. Scotland current building regs 2018.

The tables below show the suggested u values in england wales and scotland. Get a u value calculation. Whole building energy assessments are essential for understanding how the design of each construction element contributes to the performance of the building overall. Check out our guide on what performance is required for the uk insulation building regulations.

This is placed over the roof joists and an board normally external ply is laid on top. Element new build extension renovation. These are expressed as a u value which needs to be achieved.