WELCOME TO OUR Standard Assesment Procedure for Energy Ratings PROJECT
This project is presented by Self Build Self Help
Summary: Explaination of the Standard Assesment Procedure for working out Standard Energy Ratings used in Part L of the Building Regulations.
Energy Ratings for compliance with Part L of the Building Regulations. Standard Assesment procedure for energy ratings.
The text below is a brief description of what is involved with the standard assesment procedure for energy ratings, or SAP.
No matter what domestic building project you are working on, it is almost certain to come under Part L1A or Part L1B of the new building regulations. This is about conservation of heat and power, and reducing the Carbon Emissions from new and existing dwellings.
New Houses
If you are building a new house you will require a “design stage” energy rating on the house known as SAP 2005. Many planning authorities are now refusing planning permission without this being completed and submitted with your drawings at application stage, so don’t leave the energy rating to the last minute.
Once you have built your house you then need an “as built” energy rating SAP 2005 which includes any changes to the original design plus an Air Pressure test to see how well it has been built i.e. no major holes in the thermal structure. Once this stage is completed, and passed, you will get the energy performance certificate, and building control submission documents. You will need these to get your completion certificate from building control. All sounds simple but it’s not as straight forward as it seems.
Existing Houses
The SAP 2005 ( Standard Assesment Procedure) software looks at the whole house and uses information on thermal structure for walls, floors, roofs, windows and doors. It looks at heating type and fuel type, secondary heating type, chimneys, ventilation and solar gain plus summer over heating. All these factors are taken into account to produce a carbon emission figure for your house.
Extensions
Energy ratings may be required if you build an extension which has too much glazing. The rule here is that the area of glazing should not exceed 25% of the floor area of the extension. If it does you then need a whole house energy rating similar to the above approach but slightly more complicated in that a “notional extension” plus the house is used to calculate the carbon emissions and then the carbon emissions from and the “actual extension” and whole house. This is fully documented in L1B.
Conversions
If you decide to convert a house into two flats you will almost certainly be asked to provide an energy rating for the change of use. This could involve improvements to the existing thermal elements of the property in order to comply with Part L1B.
Repairs/Renovations
Removing and replacing rendering from an existing wall could trigger “consequential” improvements to the thermal properties of the wall.
Un-separated Conservatories
If you do not maintain thermal separation between your house and your new conservatory, by means of say an existing patio door. Then you will be asked by building control to provide a whole house energy rating to prove that you have not worsened the carbon emissions from the property pre and post the conservatory.
Very difficult, considering the level of glazing in a conservatory.
Top Tools
Click on a tool below for additional information.
Much more construction information is available in our bookstore. All the tools and fittings you need in the toolstore.
Forums
BARN CONVERSION
BASEMENT - USING AS UTILITY ROOM
BASEMENT CONVERSION
BUILDING REGULATIONS
CONSERVATORIES (TIMBER)
CONSERVATORIES (UPVC)
DIY CONSERVATORIES ( UPVC )
DIY CONVEYANCING
FILLING GAPS IN FLOORBOARDS
FORMING OPENINGS IN WALLS
GARAGE CONVERSION
Mortgages and Remortgaging
MOVING HOME
Oak: Internal Doors
PART P BUILDING REGULATIONS
PLANNING PERMISSION
REMOVING WINDOW & DOOR FRAMES
REPLACEMENT WINDOWS AND DOORS
UNDERFLOOR INSULATION
USING SOLAR ENERGY
 |
|
|