DANISH.SUSTAINABLE.EASY

NORTO Toft

THE CEILING CONSTITUTES AN ESSENTIAL PART OF THE ROOM. IT CAN ALSO SERVE AS ITS STRUCTURAL ELEMENT AND, IN ADDITION, IT CAN ALSO PLAY A KEY ROLE IN ACOUSTICS. IN THE NORTO TOFT PRODUCT, WE HAVE COMBINED ALL THESE ELEMENTS TOGETHER TO ACHIEVE A FULLY BALANCED ASPECT OF THE CEILING.

NORTO Toft

Sustainable acoustic ceiling solution

NORTO Toft is the new wooden ceiling in our NORTO CeilingUP range. During the development of this wooden ceiling we have placed an emphasis on achieving an appropriate acoustic effect. During its creation, we experimented with various patterns, shapes, functionalities, materials, styles and aesthetics.

Toft

NORTO Toft
NORTO Toft acoustic wooden panels

Product description

NORTO Toft is a durable ceiling panel made of solid residual pine wood. Each panel has a different pattern with milled grooves with rounded edges. These different patterns create vivid and spatial expressions on the panel structure. NORTO Toft has a natural design with visible knots and rings. The ceiling covering should be fitted with an acoustic membrane so that sound can be suppressed, thus creating the best conditions for good room acoustics. There are two types of this product. The first one has a slotted milling outlet in the shape of longitudinal grooves. The second type has milled grooves that are not drilled through. It is also possible to use NORTO Toft as an acoustic solution for walls.

Maintenance

The NORTO Toft acoustic panel does not require much maintenance. When cleaning the panels, we recommend avoiding the use of water. Use a vacuum cleaner or a wrung-out cloth to wipe off any dust and dirt. As NORTO Toft is made of pine, which is a natural product, visible knots, marrow and annual rings appear in the wood structure. Over time, the color shade can get a darker and warmer glow, as pine is a “living” material that changes as a part of a natural development process.

Get answers to frequently asked questions about NORTO Toft in our FAQ guide.

TECHNICAL DATA 
Product type:Acoustic panel of solid wood for walls, ceilings and as room dividers
Materials:Untreated and glued wooden slats
Wood type:Pine wood (certified wood from Northern European forests)
Colors:Raw, untreated wood

Fire impregnated:
On agreement for a larger amount

Other colors:
On agreement for a larger amount
Package content:4 pcs. acoutic panels (without acoustic felt)
Installations instruction
Amount of sqm per panel:0,72 m2
Amount of sqm per package: 2,88 m2
Weight per panel:4,16 kg
Weight per package:16,7 kg
Product data sheet:Download product data sheet (Danish)
NORTO Toft brochureDownload NORTO Toft brochure (Danish)
SOUND TEST - NORTO TOFT      
Frequency (Hz):125250500100020004000
NORTO Toft on sound cloth on 70 mm felt mats
0,300,980,980,950,840,74
NORTO Toft on sound cloth at 45 mm mineral wool0,15
0,690,930,92
0,780,72
NORTO Toft - Sound test graph

Sound test of the NORTO Toft acoustic panel

The acoustic panel NORTO Toft has been sound tested in cooperation with Sound Hub Denmark, the first international technology- and innovations hub for entrepreneurs and start-ups working with sound and acoustic. The product has been tested in a specialized reverberation chamber in the old product development facilities of Bang & Olufsen in Struer, Western Jutland (Denmark). The acoustic engineer, Peter Chapman, has testes the product and analyzed the results.  

The NORTO Toft has been tested to see the sound absorption by some standardized frequencies. It is possible to compare the data of the test with other acoustic products to look at the sound challenges in the room. The NORTO Toft panel has milled grooves, that create differences in the surface structure. The acoustic panel can be mounted on an underlying felt. This construction creates optimal conditions for sound reduction in the room. 

The NORTO Toft acoustic panel has been tested on different installationsThis means, that the underlying construction can fit the sound problem in the concrete room. Some examples are shown in the graph below. 

When mounting on a thin felt with a hard underlay, the NORTO Toft panel absorb 45 % of the sound by high frequencies. To achieve an optimal absorption on lower frequencies, mineral wool or felts behind the panels are good materials in that case. Then it is possible to achieve aabsorption coefficient around 0,9.  

Example of reducing reverberation time with NORTO Toft acoustic panels

Sound Hub Denmark has had decorated the walls outside the sound room “The Cube” with NORTO Toft acoustic panels in wood. The acoustic panels are made in a specially designed pattern, where the cutouts are shaped so that they look like a “soundtrack”, where it says “The Cube”.

To demonstrate the acoustic effect of the NORTO Toft panels, acoustic engineer Peter Chapman has made measurements of the reverberation time before and after the installation of the panels. He has also made a calculation of the reverberation time. The graph below shows the results and the calculation of the reverberation time for the NORTO Toft acoustic panels.

The dashed curve shows the calculated result based on the pre-measurement as well as the panels absorption coefficients and number of square meters. The red curve shows the reverberation time before installation, and the blue curve shows the reverberation time after installation of the acoustic panels. The result in the below curve shows the strength of first measuring the sound conditions in a room, and then being able to choose the right solution to an acoustic problem.

The small deviations between the calculated reverberation time (dashed curve) and measured reverberation time after the installation of the panels (blue screw) may be due to the fact, that there is a reduced degree of opening of the panels with the “soundtrack”. This means that the patterned panels with few grooves, can not reduce as much sound as the panels, where there are more grooves and more open areas into the acoustic felt, where the sound can move through.

Forest, trees and a lake
Forest, trees and a lake
Trætoppe, Vestjylland
Naturomåde, Vestjylland

Contact NORTO
Nr. Bjertvej 17
7830 Vinderup
Phone: +45 9610 1522
E-mail: mail@norto.dk
VAT: 40123164

Privacy policy