What Are The Main Uses of MDF Door Liners?

 

Yes, FD30/FD60 liners are typically intumescent-compatible. Intumescent materials are designed to expand when exposed to heat, forming an insulating barrier that enhances fire resistance. In fire door applications, intumescent strips or coatings are often applied around the door frame or liner to improve its fire rating. For FD30 and FD60-rated liners, intumescent strips are essential to maintaining the door's fire resistance by sealing any gaps that could allow smoke or flames to pass through. It is important to check that the specific MDF liner is tested and certified for compatibility with intumescent materials.

 

 

 

MDF door liners are less prone to warping compared to solid wood, as MDF is manufactured with a dense, consistent structure. However, like any material, they can warp or swell if exposed to excessive moisture or extreme environmental conditions, particularly in humid or wet environments. To prevent this, MDF door liners should be installed in dry, controlled conditions, and sealed properly to reduce moisture absorption. It is essential to use MDF liners that have been treated to resist moisture, particularly in areas with high humidity, to ensure their stability and longevity over time.

 

 

MDF door liners, particularly those used in fire door installations, must be certified to meet fire resistance standards, such as FD30 or FD60, as set out by relevant fire safety regulations. These liners are often tested and certified according to standards like BS 476-22 or EN 1634-1, which assess fire resistance. Fire certification ensures that the MDF liners, in conjunction with the door and intumescent strips, provide an adequate level of fire resistance, preventing the spread of fire for the designated period (30 minutes for FD30 or 60 minutes for FD60). It’s important to verify that the MDF door liner is properly certified before installation.