What is "Part L" of the building regulations 

 

 

How to comply with Part L of the Building Regulations:                       

Domestic - New Dwelling

                                                                                                    

Part L of the Building Regulations deals with the conservation of Fuel and Energy.

For a new house to comply with Part L you will need to obtain a BER report / XML File from a registered assessor.

 

The 2 measures that must be met are:

 

MPEPC which stands for maximum permitted energy performance co efficient.  This value must be equal to 0.4 or less.

 MPCPC which stands for maximum permitted carbon performance co efficient.  This value must be equal to 0.46 or less.

 

A successful DEAP assessment is required for a new dwelling house and a BER rating of A3 or better will ensure you a comfortable living environment in your new home with low running costs for years to come.

 

M&C Hybrid Energy Ltd offer compliance DEAP Part L analysis 

 

Conservation of Fuel and Energy for buildings other than Dwellings

These requirements include:

 

L1. A building shall be designed and constructed so as to ensure that the energy performance of the building is such as to limit the amount of energy required for the operation of the building and the amount of Carbon Dioxide (CO²) emissions associated with this energy use insofar as is reasonably practicable.

 

L4. For existing buildings other than dwellings, the requirements of L1 shall be met by:

  1. limiting the heat loss and, where appropriate, availing of the heat gains through the fabric of the building.
  2. providing energy efficient space heating and cooling systems, heating and cooling equipment, water heating systems, and ventilation systems, with effective controls.
  3. ensuring that the building is appropriately designed to limit need for cooling and, where air-conditioning or mechanical ventilation is installed, that installed systems are energy efficient, appropriately sized and adequately controlled.
  4. limiting the heat loss from pipes, ducts and vessels used for the transport or storage of heated water or air.
  5. limiting the heat gains by chilled water and refrigerant vessels, and by pipes and ducts that serve air conditioning systems.
  6. providing energy efficient artificial lighting systems and adequate control of these systems
  7. when a building undergoes major renovation, the minimum energy performance requirement of the building or the renovated part thereof is upgraded in order to meet the cost optimal level of energy performance in so far as this is technically, functionally and economically feasible.

 

L5. For new buildings, other than dwellings, the requirements of L1 shall be met by:

 

  1. providing that the energy performance of the building is such as to limit the calculated primary energy consumption and related Carbon Dioxide (CO²) emissions to a Nearly Zero Energy Building level insofar as is reasonably practicable, when both energy consumption and carbon dioxide emissions are calculated using the Non-domestic Energy Assessment Procedure (NEAP) published by SEAI.
  2. providing that, the nearly zero or very low amount of energy required is covered to a very significant extent by energy from renewable sources produced on-site or nearby.
  3. limiting the heat loss and, where appropriate, availing of the heat gains through the fabric of the building.
  4. providing and commissioning energy efficient space heating and cooling systems, heating and cooling equipment, water heating systems, and ventilation systems, with effective controls.
  5. ensuring that the building is appropriately designed to limit need for cooling and, where air-conditioning or mechanical ventilation is installed, that installed systems are energy efficient, appropriately sized and adequately controlled.
  6. limiting the heat loss from pipes, ducts and vessels used for the transport or storage of heated water or air.
  7. limiting the heat gains by chilled water and refrigerant vessels, and by pipes and ducts that serve air conditioning systems.
  8. providing energy efficient artificial lighting systems and adequate control of these systems.

 

 

There is a lot of information above, do not worry, we are here to help. Our experienced team can provide you with the relevant information and requirements that you may need to comply with Part L Regulations.

Call Micheal on 086 8722465 or email our office at This email address is being protected from spambots. You need JavaScript enabled to view it. and we will be happy to help.