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Reminder from the DTU: mandatory protection for recessed spotlights

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The AICB(1) and FILMM(2) remind us that protecting recessed spotlights is mandatory when insulating unused attic space, regardless of the type of insulation used.

Tenmat spotlight protective cover

Indeed, after noting a significant decline in sales of protective covers for recessed spotlights over several months, FILMM and AICB launched a preliminary investigation into the reasons for this sudden decrease.

The survey revealed that protective covers for recessed spotlights are being used less and less by professionals when insulating unused attic space, for the following main reasons:

  • the use of LED lighting, which is wrongly considered to be exempt from this protection;
  • the argument put forward by certain manufacturers that their lighting fixtures do not require protection because they themselves comply with regulations, even though they are not, in principle, subject to the same protocol set out in the appendix to DTU 45.11 for compliance with the specified characteristics.

In this context, the AICB and FILMM remind insulation professionals that standards DTU 45.10 and 45.11 clearly state that compliant protection must be installed on recessed lighting fixtures when insulating unused attic space. 

Failure to comply with these standards exposes you to serious risks, including fire. Recessed lighting, when installed without complying with safety requirements, can generate excessive heat and endanger the structure of insulated attics and compromise the safety of the occupants of the structure.

For projects benefiting from EEC funding, failure to comply with these standards may even result in the application being invalidated by the National Energy Savings Certificate Center (PNCEE).

To ensure the safety of occupants and avoid any risk of damage, the AICB and FILMM encourage professionals in the sector to strictly comply with DTU 45.10 and 45.11 standards when insulating unused attic space.

To protect people and property, the procedure to follow is therefore simple: any lighting fixture recessed into the attic space must be protected by a compliant cover before any insulation (of any kind) is installed.

(1) AICB: Association of Bio-based Construction Manufacturers
(2) FILMM: National Union of Manufacturers of Manufactured Mineral Wool Insulation

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