Building Regulations

Welcome to our Building Regulations section.

This section will guide you and give advice on current Building Regulations within the industry. It will help you understand how regulations may influence the selection of our products as well as their installation.

Please find below a list of quick links and references to the relevant regulations. For any questions or further information, please do not hesitate to contact us should you wish to find out more.

Part L Regulations

There are Building Regulations dictating minimum energy efficiencies (Approved Document L). The regulations specify the maximum specific fan power permitted for all ventilation products. This is measured in Watts per litre per second of airflow extracted.

For current regulations, please click the link below:

Domestic Building Services Compliance Guide

This guide provides detailed guidance for the installation of fixed building services in new and existing domestic buildings to help compliance with the energy efficiency requirements of the Building Regulations.

For current regulations, click the links below:

Non-Domestic Building Services Compliance Guide

This guide provides detailed guidance for the installation of fixed building services in new and existing non-domestic buildings to help compliance with the energy efficiency requirements of the Building Regulations.

For current regulations, please click the links below:

ERP (Energy Related Products Directive)

As a part of the EU’s commitment to achieving a 20 per cent energy saving by 2020, from January 2018, all local space heaters manufactured for sale in the EU must comply with a minimum efficiency standard under Lot 20 of the Energy Efficiency Directive. Local space heaters can meet these new regulations by using a number of different integrated control methods. From January 2016, with updates from January 2018 new residential and non-residential ventilation units are subject to the requirements of the Eco Design Directive. Residential products with power consumption greater than 30 Watts require an energy label and all products must meet certain performance criteria.

CE Marking

CE marking is a certification mark that indicates conformity with health, safety, and environmental protection standards for products sold within the European Economic Area. The CE Marking is also found on products sold outside the EEA that have been manufactured to EEA standards. Manrose complies with the CE Marking Directive so customers can be assured that any product purchased complies with all necessary regulations.

IEE Wiring Regulations 18th Edition

The IEE Wiring Regulations 18th Edition give guidance on bathroom zoning and the ingress protection (IP) rating fans need depending on their zoning location. A bathroom is divided into zones, which are limited by the bath or shower basin and the height above the floor.

  • Zone 0 – is the space in the bath or shower tray, for installation here equipment needs a rating of at least IPX7 which means it is safe for total immersion.
  • Zone 1 – is the exterior of the bath or shower tray to a height of 2.25 metres above the floor. In the Zone 1 splash zone a minimum of an IPX5-rated fan is required.
  • Zone 2 – extends to 0.60 metres beyond Zone 1 to a height of 2.25 metres above the floor. A fan needs to be at least an IPX4-rated fan. However, if this area is in the splash zone again a minimum of an IPX5-rated fan is required.

An IPX4 rating means a fan is splash-proof from all sides meanwhile an IPX5 rating means the product is capable of being subjected to low pressure jets of water from a hose.