;

Rockfon Blanka® dB 35

25mm-thick dual-function ceiling tiles with 35dB room-to-room sound insulation and powerful acoustic absorption – with smooth, ultra-white (87% LRV), matte, and anti-static coating.
Download Datasheet
Download Datasheet
Back
Combines room-to-room sound insulation as well as good sound absorption for a flexible office layout where confidentiality is not an issue
Made from a 25mm stone wool core with a high performance membrane on the back which reduces the transmission of noise from room-to-room
A deep-matt, smooth, super-white surface finish with enhanced durability making it more resistant to dirt and everyday wear and tear
Basic range of formats in semi-concealed and visible grid options
Light weight sound insulating tile, easy to install/cut and clean with a vacuum or damp cloth
Stone wool tile
Visible side: smooth, deep-matt and super-white painted fleece
Rear side: high-performance membrane
Durable painted edges

Color

White

ColorWhite
Color GroupWhites
NCSNCS S 0500-N
Light reflection87

Recommended application areas

Office

Cellular Office
Meeting Room
Corridor

Education

Classroom
Library
Music Room
Corridor

Healthcare

Consulting Room
Laboratory
Treatment Room
Corridor

Back

Sound absorption details

Practical Sound Absorption Coefficient (αp)
Edge Thickness Suspension height 125Hz 250Hz 500Hz 1000Hz 2000Hz 4000Hz Sound absorption class αw NRC
A24, E15, E24 25mm 200mm 0.45 0.50 0.80 1.00 1.00 1.00 B 0.80 0.85

Sound absorption is measured in accordance with ISO 354.

Sound absorption data αp, αw and absorption class are calculated in accordance with ISO 11654. Sound absorption properties of islands and baffles are quantified by the equivalent sound absorption area Aeq expressed as m² per item.

Back
Sound curve

Other performances

Compare
Room To Room Sound Insulation Room To Room Sound Insulation Dn,f,w = 35
Room-to-room sound insulation Dn,f,w (C;Ctr) is measured in accordance with ISO 10848-2.
Direct Sound Insulation Direct Sound Insulation Rw = 19
Sound reduction index Rw (C;Ctr) is measured in accordance with ISO 140-3.
Reaction To Fire Reaction To Fire A2-s1,d0
Reaction to fire is classified in accordance with EN 13501-1.
Light reflection and light diffusion Light reflection and light diffusion 87% light reflection >99% light diffusion
Light reflection expressed in % is measured in accordance with ISO 7724-2.
Visual Appearance Visual Appearance Super-white surface
L value: 94.5.
Deep matt surface, perfect in critical side-light
Gloss: 0.8 gloss unit at 85° angle
The whiteness (L value) of the product is tested in accordance with ISO 7724 and measured on a scale from 1 (black) to 100 (white).
The gloss of the product is tested in accordance with ISO 2813.
Humidity And Sag Resistance Humidity And Sag Resistance Up to 100% RH.
No visible deflection in high humidity.
ROCKFON ceiling tiles are dimensionally stable even at humidity levels of up to 100% relative humidity and can be installed at all temperatures ranging from 0°C to 40°C. They can be installed during the very early stage of the build (when windows are not fully sealed). Their lightweight yet stable non-hygroscopic character minimises the final weight of the fully-installed ceiling. ROCKFON ceiling tiles are predominantly classified as Class 1/C/0N in accordance with EN 13964. Certain module sizes (width above 700mm) are Class 2/C/0N.
Surface Durability Surface Durability Enhanced durability and dirt resistance.
The surface of some ROCKFON products is specially treated to provide enhanced durability and dirt resistance.
Cleaning Cleaning Vacuum, Damp cloth
Vacuum: The surface can be vacuum cleaned with a soft brush attachment. Damp cloth: The surface can be cleaned using a damp cloth or sponge with a slightly alkaline detergent (pH between 7 and 9) without alcohol, ammonia or chlorine. This may render the surface slightly shinier, so we recommend cleaning the entire surface evenly.
Hygiene Hygiene Stone wool provides no sustenance to microorganisms
Stone wool provides no sustenance to the following microorganisms tested in accordance with JIS Z 2801:2000 and ASTM C 1338-96: – Escherichia coli – Staphylococcus aureus – Methicillin-resistant staphylococcus aureus (MRSA) – Stachybotrys chartarum – Penicillium brevicumpactum – Alternaria tenuissima – Aspergillus niger – Sporobolomyces roseum – Rhodotorula rubra
Environment Environment Fully recyclable stone wool
Indoor Environment Indoor Environment A selection of Rockfon products have been awarded the Finnish M1 emission classification for building materials and the Danish Indoor Climate Label for low emission products
Back
Room-to-room sound insulation Dn,f,w (C;Ctr) is measured in accordance with ISO 10848-2.
Back
Sound reduction index Rw (C;Ctr) is measured in accordance with ISO 140-3.
Back
Reaction to fire is classified in accordance with EN 13501-1.
Back
Light reflection expressed in % is measured in accordance with ISO 7724-2.
Back
The whiteness (L value) of the product is tested in accordance with ISO 7724 and measured on a scale from 1 (black) to 100 (white).
The gloss of the product is tested in accordance with ISO 2813.
Back
ROCKFON ceiling tiles are dimensionally stable even at humidity levels of up to 100% relative humidity and can be installed at all temperatures ranging from 0°C to 40°C. They can be installed during the very early stage of the build (when windows are not fully sealed). Their lightweight yet stable non-hygroscopic character minimises the final weight of the fully-installed ceiling. ROCKFON ceiling tiles are predominantly classified as Class 1/C/0N in accordance with EN 13964. Certain module sizes (width above 700mm) are Class 2/C/0N.
Back
The surface of some ROCKFON products is specially treated to provide enhanced durability and dirt resistance.
Back
Vacuum: The surface can be vacuum cleaned with a soft brush attachment. Damp cloth: The surface can be cleaned using a damp cloth or sponge with a slightly alkaline detergent (pH between 7 and 9) without alcohol, ammonia or chlorine. This may render the surface slightly shinier, so we recommend cleaning the entire surface evenly.
Back
Stone wool provides no sustenance to the following microorganisms tested in accordance with JIS Z 2801:2000 and ASTM C 1338-96: – Escherichia coli – Staphylococcus aureus – Methicillin-resistant staphylococcus aureus (MRSA) – Stachybotrys chartarum – Penicillium brevicumpactum – Alternaria tenuissima – Aspergillus niger – Sporobolomyces roseum – Rhodotorula rubra
Back
Back
Back

Full range

Edge Dimensions (mm) Thickness (mm) Weight (Kg/m2) Min. suspension height (mm) Recommended installation system  
A24 1200 x 600 25 3.40 0

Sound absorption details

αw 0.80
NRC 0.85
Sound absorption class B

Tile details

Minimum installation height 0 mm

Packaging

Pieces Per Pack 11
Area Per Pack 7.92 m2
A24 600 x 600 25 3.40 0

Sound absorption details

αw 0.80
NRC 0.85
Sound absorption class B

Tile details

Minimum installation height 0 mm

Packaging

Pieces Per Pack 22
Area Per Pack 7.92 m2
E15 1200 x 600 25 3.40 0 Rockfon® System T15 E

Recommended installation system

Semi-concealed ceiling system Rockfon® System T15 E Ceiling system with a 15 mm wide recessed grid with E-edge tiles

Sound absorption details

αw 0.80
NRC 0.85
Sound absorption class B

Tile details

Minimum installation height 0 mm

Packaging

Pieces Per Pack 6
Area Per Pack 4.32 m2
E15 600 x 600 25 3.40 0 Rockfon® System T15 E

Recommended installation system

Semi-concealed ceiling system Rockfon® System T15 E Ceiling system with a 15 mm wide recessed grid with E-edge tiles

Sound absorption details

αw 0.80
NRC 0.85
Sound absorption class B

Tile details

Minimum installation height 0 mm

Packaging

Pieces Per Pack 6
Area Per Pack 2.16 m2
E24 1200 x 600 25 3.40 0

Sound absorption details

αw 0.80
NRC 0.85
Sound absorption class B

Tile details

Minimum installation height 0 mm

Packaging

Pieces Per Pack 6
Area Per Pack 4.32 m2
E24 600 x 600 25 3.40 0

Sound absorption details

αw 0.80
NRC 0.85
Sound absorption class B

Tile details

Minimum installation height 0 mm

Packaging

Pieces Per Pack 6
Area Per Pack 2.16 m2
Back

Sound absorption details

Tile details

Minimum installation height 0 mm
Easy access -

Packaging

Pieces Per Pack 11
Area Per Pack 7.92 m2
Back

Sound absorption details

Tile details

Minimum installation height 0 mm
Easy access -

Packaging

Pieces Per Pack 22
Area Per Pack 7.92 m2
Back

Recommended installation system

Semi-concealed ceiling system Rockfon® System T15 E Ceiling system with a 15 mm wide recessed grid with E-edge tiles

Sound absorption details

Tile details

Minimum installation height 0 mm
Easy access -

Packaging

Pieces Per Pack 6
Area Per Pack 4.32 m2
Back

Recommended installation system

Semi-concealed ceiling system Rockfon® System T15 E Ceiling system with a 15 mm wide recessed grid with E-edge tiles

Sound absorption details

Tile details

Minimum installation height 0 mm
Easy access -

Packaging

Pieces Per Pack 6
Area Per Pack 2.16 m2
Back

Sound absorption details

Tile details

Minimum installation height 0 mm
Easy access -

Packaging

Pieces Per Pack 6
Area Per Pack 4.32 m2
Back

Sound absorption details

Tile details

Minimum installation height 0 mm
Easy access -

Packaging

Pieces Per Pack 6
Area Per Pack 2.16 m2
Back

Downloads

documents

 

 

pdf
Rockfon® System T15 E | System description
Rockfon® System T15 E | System description

pdf
pdf
Rockfon Blanka® dB 35 | Datasheet
Rockfon Blanka® dB 35 | Datasheet

pdf
DoP-RFN-0142-041-2 - Rockfon Blanka® dB 35
DoP-RFN-0142-041-2 - Rockfon Blanka® dB 35

pdf
Environmental Product Declaration (EPD)
Environmental Product Declaration (EPD)

pdf
Back

We provide customers with a complete acoustic ceiling system offering, combining sound absorbing ceiling tiles and wall panels with suspension grid systems and accessories.

Select your country