
Soniflex door insulation
When thinking about optimizing the acoustics in a given room, ceiling and walls are what comes to mind first and foremost. However, it is often the door with its low mass that constitutes an entry point for noise. For this reason, experts commonly count doors among the so-called sound bridges. We at soniflex are here to help you with door insulation and offer you high-quality options for the effective and visually attractive sound-proofing of doors.
Areas of application for door insulation
Our noise-control solutions are for instance perfect for rehearsal rooms, recording studios or home theaters. But also for doctors' offices, law firms and office spaces - wherever the need for privacy and concentration requires that no sound be transmitted to adjacent rooms and that no outside noises disturb a confidential consultation. Our door insulation system is the ideal solution for effectively minimizing distracting sound transmission wherever privacy and quiet are needed.
Our most popular products for this use case




Installation
On request, nearly all our products can be delivered with self-adhesive rear faces, enabling easy, clean and time-saving installation – perfect for retrofit applications in rooms that are already in use.
Noise control
Thanks to their open-cell structure, our noise protection materials absorb sound waves and effectively attenuate bothering noise. A satisfactory result can already be achieved by lining 30 to 50 % of the ceiling and wall surfaces.
Fire protection
Many of our noise-control products are classified as flame-retardant according to DIN 4102 or DIN EN 13501. Please contact your local authorities in advance for information about the required fire protection class.

Sound insulation for doors: soni PORTA
Our premium product in the area of door insulation - soni PORTA - consists of a perfectly fitting set of six individual acoustic elements. This newly developed and innovative multi-layer noise-control product not only offers a high level of effectiveness, but also scores with a modern, attractive design. soni PORTA comprises a heavy layer that, when attached to the door leaf, increases the door’s mass and thus improves its sound insulation performance. The upper layer of soni PORTA consists of a sound-absorbing acoustic foam that is covered with a stylish felt material.
The mounting aid included in the package makes it easy to simply glue the elements directly onto the door leaf, which ensures an optimum sound-insulating and sound-absorbing effect. What is more: soni PORTA is not only easy to install, but can also be removed from smooth surfaces without leaving any residue, for instance if you need to replace the door or want to move out of the premises.
soni PORTA is the perfect door insulation solution for:
- daycare centers | kindergartens | schools
- rehearsal rooms
- sound studio
- medical offices | treatment rooms
- offices | callcenters
- law firms | banks
- hotels
- apartments
- and many more
Installation of our soni PORTA door insulation
Mounting our soni PORTA sound insulation set for doors is extremely easy. The set consists of six acoustic elements that are equipped with a unique, proprietary self-adhesive solution specially developed for this use case.
Before applying the elements to the door please make sure that the door’s surface is completely clean and dry. Furthermore, there must not be any residues of dust, grease, oil or other solvents and release agents on the relevant surface area. The acoustic elements are then simply glued to the door leaf. If necessary, they can later be removed from smooth surfaces without leaving any residue. If desired, the edges of the elements can be masked with the matching color of soni VLD adhesive tape.
Important: The sound insulation set is to be fitted on the side of the door where the noise source is located.


Acoustic door insulation - the advantages at a glance
If you want to insulate your door acoustically, soni PORTA door insulating panels are the perfect choice.
- Installation: Mounting the panels is very easy thanks to the self-adhesive backing. The package includes detailed assembly instructions.
- Robust: The felt surface is durable, abrasion-resistant and dirt-repellent. This ensures that our modern noise-control solution will keep its classy appearance for many years to come.
- Removal: Thanks to our unique self-adhesive solution, the soni PORTA elements can be removed from smooth surfaces quickly and, more importantly, without leaving any residue. This is particularly advantageous when moving out.
- Sound insulation: When applied correctly, soni PORTA provides excellent sound insulation efficiency for the covered door.
- Modern: Available in trendy colors and different sizes, the soni PORTA range will include a fitting variant for any application. In addition, with their stylish design, the acoustic elements are also visually attractive and will turn any door into an eye-catcher.