best wood CLT – CEILING XL Cross laminated timber for solid ceiling constructions

best wood CLT is a load-bearing solid wood element, consisting of at least three layers of crossways glued solid wood boards, which is suitable for all building requirements thanks to its excellent construction characteristics. The crosswise layer structure of high-quality raw material provides a high degree of dimensional stability, and leads to only small amounts of swelling and shrinking in the panel level in the event of moisture changes.

A high degree of prefabrication of the best wood CLT with downstream joinery and the simplicity of joining the best wood CLT elements ensures swift and cheap installation and guarantees dry construction.

Static and fire protection verification can be easily produced using the best wood STATICS software.

C24

Strength class

Fields of application

Ceiling
Roof

Delivery formats

Type of wood & Quality
- local spruce, non-visual quality
- local spruce, industrial-visual quality
- local spruce, visible quality
- local spruce, premium quality
Layer structure
- 3 layers
- 4 layers
- 5 layers
- 6 layers
- 7 layers
- 8 layers
- 9 layers
- 10 layers

	Width (mm)
	1800 to 3000
45
60
80
90
100
120
140
160
180
200
220
240
260
280
300
320
340
360
Thickness (mm)

Length	2.30-16.00 m
Width	max 3.0 m, ind. width up to 3.50 m
	colour finishing up to max. 2.50 m
Minimum production length	per element width 8.00 m
Minimum production width	1800 mm
Other cross sections	Available on request

Additionally available:

Insert board for forming the ceiling slab: SWP/2 S 3L three-layer board according to EN 13353:2011, 22/100 mm in 5.00 m/piece
Insert board for forming the ceiling pane: three-layer board SWP/2 S 3L according to EN 13353:2011, 27/100 mm in 5.00 m/piece
external tongue: multiplex birch, 9/30 mm in 2.50 m/piece, chamfered on one side

Technical data

General building approval	ETA-21/0568
Strength class	C24
Application classes	Use in application classes 1 and 2 according to EN 1995-1-1
Drying	Kiln dried, wood moisture max. 15 % at delivery
Bonding	CLT – XL CEILINGS: PU side bonding
	CLT – XL WALL: Hotmelt bonding
Lamellae	15, 20, 30 and 40mm, sorted for quality and finger-jointed
General information	Planed along the long side/profiled and with planar calibration, bottom side chamfered 4mm (measured diagonally), trimmed precisely ± 1mm
Heat conductivity	λ = 0.12 (W/m*K) according to ETA-21/0568
Specific heat capacity	1600 (J/kg*K) according to EN ISO 10456
CLT panel diffusion resistance	µ 20 (damp) / 50 (dry) in accordance with EN ISO 10456
Emission class	E1 according to DIN EN 717-1
Shape change	At board level ≈ 0.02% per 1% change in wood moisture perpendicular to board level ≈ 0.24% per 1% change in wood moisture
Reaction to fire	D-s2, d0 according to DIN EN 13501-1
Fireproofing	Verification possible via the free best wood STATICS software
Airtightness	Airtightness in accordance with EN 12114 from 44 mm