Ventilation chimneys VIRTUM

VIRTUM® chimney is Ø160 diameter and it can be used to dwelling rooms ventilation (according to the ordinance of the Minister of Instrastructure from 12.04.2002 concerning technical conditions which should be met by the buildings and their location - Journal of Laws no. 75, position 690).

The right building ventilation

The right building ventilation gives the feeling of comfort, but most importantly influences correct functioning of a human body. In dwelling rooms supplying appropriate amount of fresh air - devoid of pollution such as dust and water vapour - is indispensable. If the venitlation functions improperly, it deteriorates the microclimate considerably - people become drowsy, weak, have problems with concentration.


Kominek In inappropriately ventilated rooms mould develops on the ceilings and walls!


Support natural ventilation

  • provide excellent room ventilation
  • perfectly vent sanitary installations in the buildings
  • UV, weather, temperature and ageing resistant.

Ventilation chimney Virtum

VIRTUM® Ø160 has the ventilation section size of 200 cm2, thanks to which it can be used to ventilate dwelling rooms. VIRTUM® Ø160 mm chimney provides much better air flow than the chimney with a smaller diameter. Additionally, in order to provide even greater room ventilation, the chimney effectively uses wind power to improve stack effect. Excellent ventilating capability of VIRTUM® ventilation chimneys is a result of their nnovative construction - in the designing process advanced technology of air flow digital modelling has been used, which is also used for Formula 1 bolides designing.

How does natural ventilation work?

Air exchange in the rooms happens as a result of pressure differences. Warm, “used” air flowing out of the building creates underpressure which enables fresh air suction from the outside. This proces can last until temperature outside is lower than the temperature inside the rooms. The greater the temperature difference, the greater the air flow. Special construction of VIRTUM® ventilation chimney supports stack effect by means of wind power. It is important especially in the periods when the temperature outside the building is similar or higher than the temperature inside.

Ventilation chimneys offered by mdm® are intended to be mounted on various kinds of roofing. Thanks to the special design of ventilation tiles, they can be successfully installed on both metal sheet tiles and other flat roofing (metal sheet, tar-board, shingle, etc.) as well as on roofs covered with popular clay and concrete tile models.

Cw factor research:

VIRTUM® ventilation chimney guarantees the best wind support, which has been acknowledged by Cw factor research:

Air speed in the channel [m/s] Cw factor
0,0 -0,41
0,5 -0,35
1,0 -0,29
1,5 -0,24
2,0 -0,18
4,0 +0,16

If the ventilation doesnt work properly


people feel drowsy!

have problems with concentration!

 mould develops on the walls and ceilings!

the condition of the building visibly deteriorates!


Virtum - ventilation chimneys

  1. A level - makes VIRTUM® chimney installation easier.
  2. A shape which prevents waste permeation.
  3. Chimney bottom ensures proper ventilation both in summer and in winter using pressure difference and wind power.
  4. Thanks to using additional ventilation rings at the bottom, the chimney exceptionally effectively uses wind power.
  5. Thanks to appropriate holes, it freely drains condensate outside.
  6. System of bases adjusted to various roofings.
  7. VIRTUM® chimney has Ø160 diameter and it can be used to dwelling rooms ventilation.

Ventilation chimneys offered by mdm® are intended to be mounted on various kinds of roofing. Thanks to the special design of ventilation tiles, they can be successfully installed on both metal sheet tiles and other flat roofing (metal sheet, tar-board, shingle, etc.) as well as on roofs covered with popular clay and concrete tile models.



VIRTUM ventilation chimney
for shingle/tar-board roofing

Thanks to a special bottom it can be installed on shingle and tar-board roofing.

VIRTUM ventilation chimney
for flat metal roof covering

Thanks to a special bottom it can be installed on the flat metal roof coverings.

VIRTUM ventilation chimney
for metal sheet tiles



Thanks to a special bottom it can be installed on metal sheet tiles roofings:
• low profile (N)
• high profile (W)
• very high profile (BW)
• modular (BM)

VIRTUM ventilation chimney
for roof tiles



Thanks to a special bottom it can be installed on roofs made of the most popular models of roof tiles. Sold in version Ø125 mm and Ø160 mm, in 9 basic colours to choose from:

  • type 01 (Brass Celtycka)

  • type 02 (Brass Bałtycka, Nelskamp esówka S, Prodach podwójna esówka)

  • type 03 (Brass Romańska, Benders Mecklenburger, Prodach podwójna rzymska)

  • type 04 (Euronit Profil S)

  • type 05 (Euronit Extra)

  • type 06 (Nelskamp Finkenberger)

  • type 07 (Plain Tile)

  • type 08 (Mediterran Danubia)

  • type 09 (Roben Piemont)





  • brick red 8004; brown 8017; dark brown 8019; graphite 7016; black 9005; red 3004; red brown 8012; green 6020

    mdm nt Sp. z o.o.
    43-346 Bielsko-Biała | ul.Bestwińska 143
    tel.: +48 33 47 94 402 | fax: +48 33 47 94 513 | e-mail: office@mdmnt.com