Manufacturer

BVS Akustik

BVS Akustik GmbH & Co. KG from Verl (East Westphalia) has been active in the furniture industry since 1990 and produces custom acoustic panels with CNC saws, purpose-built drilling lines and an in-house laser system. Almost all board materials are processed: solid wood, veneered, composite and decor boards, each cut, edge-finished and lacquered to the customer's specification. The range covers drilled (AKUSTIbohr), micro-perforated (AKUSTIpur), slotted (AKUSTIpan) and sound-absorbing partition elements (AKUSTItrenn), each in numerous hole patterns and build-up depths. The elements are available in fire classes B1 and B2 and, for sports halls, with certified ball-impact resistance. References include Princeton University, NYU and the Emser Therme.

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Documents

Datasheet Spruce Datasheet Multiplex Processing guideline Datasheet (d=2 mm with fleece)Emissions test (TFI 24-001177-04)Ball-impact resistance W3 (IST L 9407-002)FSC-Certificate (GFA-COC-005281, bis 30.06.2031)

Test report on request

AKUSTIpan SL Acoustic Impact Wall

Name: AKUSTIpan SL Acoustic Impact Wall
Brand: BVS Akustik

AKUSTIpan SL Prallwand

Wall

Description

AKUSTIpan SL Prallwand is the ball-impact-resistant acoustic panel from BVS with a linear structure, produced as a three-layer spruce board or as birch plywood. The fine slotting on the face with drilling on the back gives the element a modern, joint-free look and makes it acoustically effective. Slot widths are 2 and 3 mm on a 16 mm or 32 mm grid as well as in irregular slotting; the drilling diameters on the back are 6 and 4 mm for spruce and 8 mm for birch plywood. A ball-impact-resistant tongue-and-groove connection allows concealed screw fixing, a seamless appearance and quick installation; cuts and cut-outs are possible directly on site. The spruce version is made from wood from sustainable forestry, formaldehyde-free special adhesive and environmentally friendly lacquer, and is therefore low in emissions. Acoustically, the impact wall works through the interplay of the slotting on the face, the drilling on the back and the build-up behind, which turns the panel into a broadband sound absorber. Absorption coefficients are determined in the reverberation room per EN ISO 354 and rated per EN ISO 11654; for design work the full third-octave curve matters alongside the weighted single-number rating, and not the single-number rating alone. Across the different slot and grid versions, absorption can be tuned specifically to the requirements of the room.

Technical data

Material: Three-layer spruce board or birch plywood; spruce version from sustainable forestry, formaldehyde-free special adhesive, surface finished with environmentally friendly lacquer

Up to fire class: B2 (spruce and plywood) and B1 (plywood) per DIN 4102 / DIN EN 13501-1

Application: Impact-wall and wall cladding in sports halls and comparable heavily used spaces

Measurement data

Sound absorption

ISO 354 – reverberation chamber· 83 variants

Choose the look

Choose the slot pattern · web / slot width in mm

Rear drilling · Ø / pitch in mm, invisible from the front

α_w

0.90

Frequency values

α_p per ISO 11654

f (Hz)	125	250	500	1k	2k	4k
α_p	0.35	0.75	0.95	0.90	0.80	0.85

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Cavity	Insulation	Value
100 mm	30 mm	α_w0.90
70 mm	30 mm	α_w0.85
200 mm	30 mm	α_w0.85
50 mm	30 mm	α_w0.75

Absorber class: A

Test report: 24-000631

Institute: TFI Aachen GmbH

Measurement date: 2024-06-04

Application: Birch plywood

Perforation: 13/3 - 8/16

Measured values as a table (83 measurements)

AKUSTIpan SL Acoustic Impact Wall: sound absorption coefficient αs per ISO 354 by frequency and test build-up
Build-up	α_w	Absorber class	100 Hz	125 Hz	160 Hz	200 Hz	250 Hz	315 Hz	400 Hz	500 Hz	630 Hz	800 Hz	1000 Hz	1250 Hz	1600 Hz	2000 Hz	2500 Hz	3150 Hz	4000 Hz	5000 Hz
0,5/1,8/V (inner perforation 19,6 %) · h=100 mm · with 30 mm insulation · Birch plywood	0.75	C	0.18	0.21	0.51	0.65	0.62	0.81	0.87	0.88	0.89	0.86	0.80	0.71	0.67	0.65	0.70	0.69	0.71	0.71
0,5/1,8/V (inner perforation 19,6 %) · h=200 mm · with 30 mm insulation · Birch plywood	0.65	C	0.41	0.37	0.75	0.81	0.81	0.87	0.80	0.76	0.75	0.68	0.62	0.70	0.68	0.67	0.63	0.62	0.59	0.51
0,5/1,8/V (inner perforation 19,6 %) · h=300 mm · with 30 mm insulation · Birch plywood	0.70	C	0.55	0.46	0.77	0.79	0.72	0.78	0.78	0.70	0.70	0.72	0.77	0.71	0.71	0.67	0.64	0.61	0.57	0.46
1-3/6/6/P · h=50 mm · with 30 mm insulation · Birch plywood	0.45	D	0.16	0.33	0.41	0.48	0.72	0.96	1.03	1.01	0.87	0.71	0.63	0.49	0.39	0.34	0.33	0.34	0.33	0.36
1-3/6/6/P · h=70 mm · with 30 mm insulation · Birch plywood	0.50	D	0.27	0.36	0.49	0.61	0.92	1.04	0.97	0.95	0.81	0.72	0.56	0.47	0.39	0.38	0.37	0.38	0.38	0.39
1-3/6/6/P · h=200 mm · with 30 mm insulation · Birch plywood	0.60	C	0.45	0.88	0.93	0.92	0.86	0.79	0.79	0.75	0.66	0.59	0.59	0.57	0.55	0.53	0.53	0.49	0.44	0.43
1-3/8/8/P · h=50 mm · with 30 mm insulation · Birch plywood	0.40	D	0.15	0.28	0.36	0.53	0.80	0.91	0.96	0.86	0.67	0.51	0.47	0.36	0.31	0.32	0.31	0.33	0.31	0.36
1-3/8/8/P · h=70 mm · with 30 mm insulation · Birch plywood	0.45	D	0.33	0.43	0.48	0.74	0.94	0.89	0.83	0.76	0.66	0.50	0.46	0.38	0.35	0.36	0.33	0.34	0.36	0.38
1-3/8/8/P · h=200 mm · with 30 mm insulation · Birch plywood	0.50	D	0.51	0.87	0.91	0.86	0.85	0.73	0.74	0.61	0.53	0.51	0.49	0.49	0.43	0.42	0.39	0.38	0.37	0.39
13/3 - 6/16 · h=100 mm · with 30 mm insulation · Three-layer spruce	0.75	C	0.19	0.22	0.54	0.64	0.64	0.76	0.77	0.80	0.80	0.78	0.77	0.72	0.70	0.69	0.70	0.74	0.82	0.94
13/3 - 6/16 · h=200 mm · with 30 mm insulation · Three-layer spruce	0.70	C	0.44	0.36	0.72	0.74	0.73	0.75	0.72	0.70	0.70	0.65	0.63	0.69	0.68	0.67	0.65	0.67	0.71	0.72
13/3 - 6/16 · h=300 mm · with 30 mm insulation · Three-layer spruce	0.70	C	0.49	0.41	0.66	0.70	0.62	0.70	0.68	0.66	0.68	0.68	0.72	0.70	0.69	0.65	0.68	0.65	0.66	0.68
13/3 - 8/16 · h=50 mm · with 30 mm insulation · Birch plywood	0.75	C	0.18	0.17	0.32	0.38	0.48	0.55	0.77	0.84	0.98	1.00	1.01	1.02	0.97	0.87	0.80	0.77	0.78	0.94
13/3 - 8/16 · h=70 mm · with 30 mm insulation · Birch plywood	0.85	B	0.22	0.19	0.41	0.47	0.61	0.69	0.85	0.93	0.98	1.01	0.99	0.97	0.91	0.81	0.78	0.83	0.89	0.94
13/3 - 8/16 · h=100 mm · with 30 mm insulation · Birch plywood	0.90	A	0.26	0.27	0.55	0.62	0.76	0.87	0.94	0.99	0.95	0.96	0.91	0.88	0.82	0.81	0.84	0.81	0.83	0.86
13/3 - 8/16 · h=200 mm · with 30 mm insulation · Birch plywood	0.85	B	0.39	0.35	0.78	0.80	0.87	0.90	0.95	0.94	0.87	0.77	0.77	0.87	0.84	0.85	0.81	0.81	0.85	0.91
14/2 - 6/10,67 · h=100 mm · with 30 mm insulation · Three-layer spruce	0.85	B	0.22	0.27	0.53	0.68	0.69	0.84	0.90	0.94	0.98	0.91	0.88	0.84	0.77	0.73	0.79	0.78	0.84	0.96
14/2 - 6/10,67 · h=200 mm · with 30 mm insulation · Three-layer spruce	0.80	B	0.41	0.36	0.80	0.82	0.84	0.90	0.85	0.81	0.79	0.75	0.70	0.79	0.78	0.76	0.75	0.76	0.75	0.81
14/2 - 6/10,67 · h=300 mm · with 30 mm insulation · Three-layer spruce	0.80	B	0.57	0.53	0.90	0.81	0.76	0.85	0.81	0.75	0.72	0.77	0.85	0.81	0.79	0.77	0.76	0.73	0.75	0.79
14/2 - 6/16 · h=100 mm · with 30 mm insulation · Three-layer spruce	0.75	C	0.20	0.24	0.53	0.69	0.66	0.75	0.76	0.76	0.79	0.77	0.77	0.70	0.68	0.67	0.70	0.72	0.80	0.95
14/2 - 6/16 · h=200 mm · with 30 mm insulation · Three-layer spruce	0.70	C	0.38	0.36	0.70	0.68	0.68	0.70	0.68	0.66	0.70	0.65	0.62	0.67	0.65	0.66	0.67	0.65	0.68	0.73
14/2 - 6/16 · h=300 mm · with 30 mm insulation · Three-layer spruce	0.70	C	0.59	0.49	0.67	0.65	0.60	0.68	0.68	0.62	0.64	0.65	0.71	0.68	0.68	0.66	0.64	0.64	0.65	0.69
14/2 - 8/16 · h=50 mm · with 30 mm insulation · Birch plywood	0.80	B	0.17	0.14	0.31	0.37	0.49	0.61	0.81	0.83	0.97	1.03	1.01	0.98	0.89	0.79	0.72	0.68	0.75	0.87
14/2 - 8/16 · h=70 mm · with 30 mm insulation · Birch plywood	0.80	B	0.20	0.17	0.38	0.49	0.61	0.72	0.87	0.96	1.02	0.99	0.97	0.89	0.80	0.75	0.70	0.76	0.80	0.84
14/2 - 8/16 · h=100 mm · with 30 mm insulation · Birch plywood	0.85	B	0.30	0.29	0.53	0.61	0.73	0.90	0.92	0.93	0.96	0.95	0.88	0.82	0.75	0.74	0.76	0.75	0.76	0.77
14/2 - 8/16 · h=200 mm · with 30 mm insulation · Birch plywood	0.80	B	0.44	0.37	0.73	0.82	0.86	0.89	0.95	0.88	0.87	0.75	0.75	0.80	0.80	0.78	0.77	0.77	0.77	0.79
2-3/6/6/P · h=100 mm · with 30 mm insulation · Three-layer spruce / Birch plywood	0.90	A	0.21	0.24	0.54	0.70	0.71	0.86	0.92	0.98	0.99	0.97	0.92	0.85	0.82	0.82	0.83	0.80	0.81	0.87
2-3/6/6/P · h=200 mm · with 30 mm insulation · Three-layer spruce / Birch plywood	0.80	B	0.40	0.36	0.82	0.90	0.83	0.90	0.83	0.86	0.86	0.80	0.76	0.86	0.84	0.81	0.80	0.76	0.71	0.65
2-3/6/6/P · h=300 mm · with 30 mm insulation · Three-layer spruce / Birch plywood	0.80	B	0.59	0.49	0.82	0.80	0.79	0.82	0.81	0.80	0.80	0.84	0.87	0.83	0.85	0.83	0.78	0.73	0.72	0.65
2-3/8/8/P · h=100 mm · with 30 mm insulation · Three-layer spruce / Birch plywood	0.70	C	0.24	0.25	0.61	0.70	0.62	0.77	0.77	0.72	0.78	0.73	0.71	0.65	0.60	0.59	0.63	0.61	0.63	0.68
2-3/8/8/P · h=200 mm · with 30 mm insulation · Three-layer spruce / Birch plywood	0.65	C	0.37	0.33	0.66	0.67	0.69	0.69	0.66	0.65	0.66	0.61	0.59	0.64	0.62	0.60	0.57	0.54	0.54	0.51
2-3/8/8/P · h=300 mm · with 30 mm insulation · Three-layer spruce / Birch plywood	0.65	C	0.46	0.40	0.67	0.66	0.61	0.65	0.68	0.63	0.62	0.64	0.68	0.64	0.62	0.60	0.58	0.54	0.53	0.48
29/3 - 6/16 · h=100 mm · with 30 mm insulation · Three-layer spruce	0.50	D	0.30	0.30	0.56	0.58	0.49	0.59	0.51	0.52	0.53	0.51	0.47	0.46	0.45	0.45	0.48	0.50	0.58	0.69
29/3 - 6/16 · h=200 mm · with 30 mm insulation · Three-layer spruce	0.50	D	0.37	0.31	0.56	0.50	0.49	0.50	0.48	0.48	0.48	0.45	0.43	0.45	0.44	0.44	0.42	0.44	0.47	0.51
29/3 - 6/16 · h=300 mm · with 30 mm insulation · Three-layer spruce	0.45	D	0.46	0.37	0.49	0.48	0.45	0.50	0.46	0.45	0.44	0.47	0.48	0.45	0.46	0.44	0.42	0.42	0.43	0.44
29/3 - 8/16 · h=50 mm · with 30 mm insulation · Birch plywood	0.70	C	0.19	0.17	0.35	0.39	0.49	0.55	0.72	0.73	0.80	0.82	0.78	0.69	0.64	0.57	0.53	0.52	0.57	0.70
29/3 - 8/16 · h=70 mm · with 30 mm insulation · Birch plywood	0.65	C	0.25	0.22	0.52	0.51	0.60	0.71	0.73	0.75	0.77	0.76	0.69	0.66	0.61	0.54	0.52	0.54	0.61	0.68
29/3 - 8/16 · h=100 mm · with 30 mm insulation · Birch plywood	0.65	C	0.32	0.33	0.55	0.56	0.61	0.74	0.73	0.70	0.73	0.69	0.66	0.60	0.56	0.52	0.54	0.53	0.54	0.61
29/3 - 8/16 · h=200 mm · with 30 mm insulation · Birch plywood	0.60	C	0.42	0.38	0.64	0.65	0.66	0.66	0.68	0.68	0.67	0.60	0.59	0.62	0.59	0.57	0.53	0.52	0.56	0.65
30/2 - 6/10,67 · h=100 mm · with 30 mm insulation · Three-layer spruce	0.60	C	0.24	0.26	0.55	0.64	0.63	0.71	0.69	0.71	0.71	0.63	0.59	0.53	0.49	0.48	0.49	0.50	0.56	0.69
30/2 - 6/10,67 · h=200 mm · with 30 mm insulation · Three-layer spruce	0.55	D	0.35	0.30	0.67	0.62	0.64	0.69	0.59	0.59	0.58	0.53	0.52	0.54	0.52	0.48	0.47	0.48	0.48	0.51
30/2 - 6/10,67 · h=300 mm · with 30 mm insulation · Three-layer spruce	0.55	D	0.46	0.45	0.63	0.62	0.58	0.62	0.59	0.57	0.58	0.56	0.59	0.54	0.52	0.49	0.49	0.43	0.47	0.50
30/2 - 6/16 · h=100 mm · with 30 mm insulation · Three-layer spruce	0.50	D	0.21	0.23	0.57	0.58	0.47	0.57	0.52	0.52	0.52	0.50	0.47	0.44	0.42	0.44	0.46	0.46	0.56	0.74
30/2 - 6/16 · h=200 mm · with 30 mm insulation · Three-layer spruce	0.45	D	0.39	0.35	0.56	0.50	0.50	0.51	0.46	0.46	0.46	0.44	0.42	0.43	0.41	0.42	0.42	0.41	0.42	0.48
30/2 - 6/16 · h=300 mm · with 30 mm insulation · Three-layer spruce	0.45	D	0.45	0.41	0.47	0.48	0.46	0.47	0.44	0.45	0.44	0.45	0.47	0.45	0.43	0.41	0.40	0.39	0.42	0.46
30/2 - 8/16 · h=50 mm · with 30 mm insulation · Birch plywood	0.60	C	0.20	0.19	0.37	0.38	0.51	0.57	0.70	0.73	0.74	0.75	0.71	0.63	0.60	0.53	0.48	0.45	0.47	0.62
30/2 - 8/16 · h=70 mm · with 30 mm insulation · Birch plywood	0.60	C	0.23	0.21	0.48	0.49	0.59	0.68	0.71	0.76	0.77	0.73	0.68	0.60	0.54	0.48	0.49	0.50	0.59	0.66
30/2 - 8/16 · h=100 mm · with 30 mm insulation · Birch plywood	0.60	C	0.33	0.33	0.55	0.54	0.61	0.72	0.71	0.70	0.71	0.67	0.62	0.58	0.51	0.51	0.50	0.50	0.51	0.56
30/2 - 8/16 · h=200 mm · with 30 mm insulation · Birch plywood	0.60	C	0.44	0.37	0.66	0.64	0.68	0.65	0.67	0.64	0.62	0.57	0.58	0.59	0.55	0.51	0.49	0.50	0.52	0.61
4/10,67/10,67/P · h=100 mm · with 30 mm insulation · Birch plywood	0.75	C	0.25	0.23	0.52	0.66	0.60	0.69	0.72	0.72	0.76	0.73	0.72	0.71	0.70	0.68	0.74	0.73	0.82	0.87
4/10,67/10,67/P · h=200 mm · with 30 mm insulation · Birch plywood	0.70	C	0.31	0.27	0.66	0.65	0.64	0.69	0.65	0.64	0.66	0.66	0.62	0.68	0.69	0.69	0.67	0.69	0.69	0.67
4/10,67/10,67/P · h=300 mm · with 30 mm insulation · Birch plywood	0.70	C	0.47	0.37	0.61	0.59	0.57	0.69	0.67	0.64	0.64	0.65	0.72	0.68	0.70	0.69	0.69	0.67	0.68	0.67
4-10/16/16/P · h=100 mm · with 30 mm insulation · Birch plywood	0.50	D	0.19	0.23	0.50	0.72	0.75	0.93	1.01	1.01	0.95	0.79	0.63	0.52	0.44	0.42	0.42	0.37	0.38	0.42
4-10/16/16/P · h=200 mm · with 30 mm insulation · Birch plywood	0.45	D	0.37	0.33	0.89	1.02	0.96	0.95	0.89	0.78	0.71	0.61	0.56	0.55	0.49	0.44	0.36	0.31	0.27	0.23
4-10/16/16/P · h=300 mm · with 30 mm insulation · Birch plywood	0.45	D	0.55	0.47	0.98	0.86	0.83	0.85	0.77	0.68	0.66	0.72	0.66	0.58	0.52	0.43	0.38	0.30	0.28	0.23
4-8/16/16/P · h=100 mm · with 30 mm insulation · Three-layer spruce / Birch plywood	0.55	D	0.20	0.20	0.50	0.67	0.69	0.90	0.88	0.88	0.85	0.79	0.68	0.57	0.49	0.46	0.48	0.43	0.44	0.47
4-8/16/16/P · h=200 mm · with 30 mm insulation · Three-layer spruce / Birch plywood	0.50	D	0.42	0.34	0.81	0.83	0.84	0.86	0.74	0.73	0.71	0.60	0.59	0.60	0.54	0.50	0.42	0.39	0.33	0.28
4-8/16/16/P · h=300 mm · with 30 mm insulation · Three-layer spruce / Birch plywood	0.50	D	0.58	0.52	0.82	0.73	0.73	0.81	0.76	0.68	0.64	0.70	0.67	0.59	0.55	0.49	0.45	0.37	0.33	0.28
irreg./2 - 4/8 · h=50 mm · with 30 mm insulation · Birch plywood	0.65	C	0.20	0.18	0.38	0.42	0.49	0.52	0.61	0.63	0.65	0.64	0.64	0.60	0.58	0.54	0.53	0.52	0.57	0.67
irreg./2 - 4/8 · h=70 mm · with 30 mm insulation · Birch plywood	0.60	C	0.25	0.21	0.48	0.48	0.56	0.58	0.62	0.65	0.63	0.63	0.61	0.58	0.56	0.54	0.53	0.56	0.59	0.69
irreg./2 - 4/8 · h=100 mm · with 30 mm insulation · Birch plywood	0.60	C	0.32	0.34	0.51	0.50	0.57	0.60	0.61	0.60	0.62	0.60	0.58	0.58	0.55	0.52	0.54	0.54	0.56	0.60
irreg./2 - 4/8 · h=200 mm · with 30 mm insulation · Birch plywood	0.55	D	0.38	0.34	0.52	0.53	0.55	0.58	0.55	0.55	0.58	0.55	0.53	0.57	0.56	0.52	0.53	0.53	0.54	0.63
irreg./2 - 6/10,67 · h=100 mm · with 30 mm insulation · Three-layer spruce	0.75	C	0.20	0.20	0.50	0.67	0.65	0.78	0.84	0.82	0.85	0.81	0.77	0.67	0.66	0.63	0.65	0.67	0.74	0.89
irreg./2 - 6/10,67 · h=200 mm · with 30 mm insulation · Three-layer spruce	0.70	C	0.39	0.31	0.76	0.73	0.76	0.76	0.75	0.73	0.72	0.66	0.61	0.68	0.66	0.67	0.61	0.60	0.61	0.66
irreg./2 - 6/10,67 · h=300 mm · with 30 mm insulation · Three-layer spruce	0.70	C	0.50	0.45	0.75	0.72	0.67	0.74	0.76	0.71	0.68	0.68	0.74	0.69	0.67	0.64	0.63	0.60	0.62	0.60
irreg./2 - 6/16 · h=100 mm · with 30 mm insulation · Three-layer spruce	0.60	C	0.28	0.25	0.51	0.64	0.58	0.66	0.66	0.67	0.68	0.64	0.61	0.60	0.56	0.56	0.57	0.60	0.66	0.81
irreg./2 - 6/16 · h=200 mm · with 30 mm insulation · Three-layer spruce	0.60	C	0.37	0.34	0.65	0.61	0.62	0.63	0.57	0.57	0.61	0.56	0.54	0.56	0.55	0.53	0.52	0.53	0.56	0.56
irreg./2 - 6/16 · h=300 mm · with 30 mm insulation · Three-layer spruce	0.60	C	0.37	0.31	0.57	0.59	0.53	0.59	0.59	0.57	0.56	0.56	0.59	0.58	0.55	0.55	0.53	0.52	0.51	0.56
irreg./2 - 8/16 · h=50 mm · with 30 mm insulation · Birch plywood	0.75	C	0.18	0.15	0.34	0.40	0.52	0.58	0.77	0.83	0.92	0.95	0.91	0.86	0.81	0.70	0.62	0.61	0.63	0.76
irreg./2 - 8/16 · h=70 mm · with 30 mm insulation · Birch plywood	0.75	C	0.23	0.20	0.41	0.49	0.60	0.75	0.85	0.87	0.91	0.87	0.84	0.79	0.70	0.64	0.61	0.65	0.69	0.75
irreg./2 - 8/16 · h=100 mm · with 30 mm insulation · Birch plywood	0.75	C	0.34	0.32	0.55	0.60	0.71	0.84	0.88	0.85	0.85	0.83	0.81	0.75	0.66	0.64	0.66	0.63	0.64	0.69
irreg./2 - 8/16 · h=200 mm · with 30 mm insulation · Birch plywood	0.75	C	0.50	0.43	0.75	0.61	0.77	0.84	0.85	0.79	0.76	0.69	0.70	0.73	0.71	0.69	0.65	0.65	0.69	0.67
irreg./3 - 4/8 · h=50 mm · with 30 mm insulation · Birch plywood	0.65	C	0.20	0.18	0.39	0.44	0.49	0.56	0.62	0.63	0.66	0.65	0.64	0.61	0.59	0.56	0.54	0.53	0.58	0.68
irreg./3 - 4/8 · h=70 mm · with 30 mm insulation · Birch plywood	0.60	C	0.24	0.20	0.52	0.51	0.57	0.61	0.63	0.65	0.67	0.65	0.62	0.59	0.56	0.54	0.53	0.55	0.62	0.72
irreg./3 - 4/8 · h=100 mm · with 30 mm insulation · Birch plywood	0.60	C	0.32	0.31	0.53	0.51	0.57	0.61	0.61	0.59	0.62	0.61	0.58	0.57	0.55	0.53	0.54	0.52	0.55	0.63
irreg./3 - 4/8 · h=200 mm · with 30 mm insulation · Birch plywood	0.55	D	0.37	0.33	0.56	0.54	0.57	0.58	0.56	0.56	0.58	0.54	0.52	0.57	0.56	0.54	0.54	0.56	0.58	0.63
irreg./3 - 6/16 · h=100 mm · with 30 mm insulation · Three-layer spruce	0.65	C	0.24	0.24	0.57	0.69	0.58	0.66	0.68	0.66	0.67	0.66	0.63	0.60	0.58	0.57	0.61	0.62	0.72	0.85
irreg./3 - 6/16 · h=200 mm · with 30 mm insulation · Three-layer spruce	0.60	C	0.45	0.45	0.63	0.62	0.59	0.63	0.60	0.57	0.61	0.59	0.54	0.58	0.58	0.55	0.56	0.56	0.58	0.63
irreg./3 - 6/16 · h=300 mm · with 30 mm insulation · Three-layer spruce	0.60	C	0.42	0.39	0.55	0.62	0.55	0.61	0.57	0.57	0.57	0.58	0.63	0.60	0.59	0.57	0.56	0.54	0.55	0.57
irreg./3 - 8/16 · h=50 mm · with 30 mm insulation · Birch plywood	0.75	C	0.20	0.18	0.31	0.39	0.47	0.59	0.78	0.82	0.90	0.96	0.92	0.89	0.84	0.75	0.67	0.65	0.68	0.85
irreg./3 - 8/16 · h=70 mm · with 30 mm insulation · Birch plywood	0.80	B	0.22	0.19	0.43	0.49	0.60	0.74	0.82	0.88	0.90	0.91	0.89	0.82	0.74	0.67	0.65	0.67	0.75	0.80
irreg./3 - 8/16 · h=100 mm · with 30 mm insulation · Birch plywood	0.80	B	0.27	0.27	0.55	0.57	0.69	0.82	0.85	0.86	0.89	0.85	0.82	0.77	0.71	0.68	0.69	0.68	0.70	0.76
irreg./3 - 8/16 · h=200 mm · with 30 mm insulation · Birch plywood	0.75	C	0.40	0.36	0.75	0.73	0.81	0.87	0.82	0.79	0.78	0.72	0.67	0.75	0.74	0.73	0.67	0.69	0.73	0.78

Measured values as a table (83 measurements)

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Last updated: 16/09/2026