MHM Panels

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Material:

Coniferous wood panels, unsorted according to  width,  technically  dried  15 %  +/-  3 % and 23 mm thick

Dimensions:

Height:                          max. 3.25 m
Width:                             max. 6.00 m

Possible wall thicknesses:

External wall                    34.0 cm          15  layers
External wall                    29.5 cm          13  layers
External wall                    25.0 cm          11  layers
External wall                    20.5 cm            9  layers
Internal wall                    16.0 cm            7  layers
Internal wall                    11.5 cm            5  layers

Element structure:

Several layers crosswise connected, pressed and connected to a wall panel via aluminium grooved pins. All defined wall thicknesses are produced with an uneven number of panel layers. Consequently, internal and external layer are always arranged vertically.

Surfaces:

Grooved surface planed / levelled on one side (the generated air inclusions result in an optimised U value); mutually rough sawn.

Timber protection:

Technical drying of the raw panels of min. 8 hours at 65°C replaces chemical timber protection.

Connection:

Aluminium grooved pins (according to ETA certification ETA-13/0801)

Form stability:

The longitudinal expansion coefficient of timber  is  8.0  *  10^-6  at  20°C.  Consequently,  form modifications cannot be measured with construction site conventional measuring devices.

Gross density:

approx. 480 kg/m³

Heat conductivity:

λ = 0.094 W/(m*K), (measurement result measured by MFPA Leipzig)
λ = 0.11 W/(m*K), (measured by AbZ.)

Heat protection:

U value (insulated with 10 cm wood soft fibre WLG 040)

Vapour diffusion:

without diffusion barrier, vapour braking, diffusion resistance number = approx. 65 µ

Wind tightness:

Thanks to its construction, the Massiv-Holz-Mauer® system is able to produce the air/wind tightness according to DIN 4108. For buildings requiring a higher air/wind tightness (passive house and efficiency house) corresponding accompanying measures are necessary.

Noise insulation:

External wall: 34 cm target value 48 dB (according to test report MFPA Leipzig) Building partition wall: target value 78 dB (according to test report ift Rosenheim) Flat partition wall: target value 61 dB (according to test report ift Rosenheim)

Fire protection:

MHM 20.5 cm – REI 90 (according to the report on the classification of the fire resistance according to EN 13501-2:2008-01 and General Appraisal Certificate)

High-frequency rays:

Thanks to the solid monolithic solid wood wall (Massiv-Holz-Mauer^®) and according to the certificate, up to 95 % of the high-frequency rays (mobile communications, television, beam radio etc.) are even shielded in the uncovered raw wall.

Timber mortar:

Timber mortar (wax compound) makes the wall elements for transport and assembly water- repellent and serves as a joint mortar (seal). It will be applied on customer request.

Heat storage capacity:

The Massiv-Holz-Mauer^® system has an excellent heat storage capacity with particularly good cooling times. The cooling values are by a multiple factor higher than in stone brickwork.