KRONOTHERM flex is specially designed for use as infill insulation in ceilings, roofs and both exterior and interior walls. Available in thicknesses from 40 to 240 mm, it excels above all due to the ease with which it can wedged in place and the fact that it stays as installed without being attached. KRONOTHERM flex reduces energy costs and enhances wellbeing.

Saves energy and is easy to use

KRONOTHERM flex, the professional feel-good insulation from our KRONOTHERM system programme which keeps buildings pleasantly cool in the summer and keeps agreeable warmth inside in the winter. In both new and renovated buildings, KRONOTHERM flex lets you achieve an optimal indoor feel-good climate. During installation, this natural insulating material already makes a convincing impression because it is pleasant to the touch and is inherently very stiff, allowing it to be reliably installed in very wide sections simply by wedging it into place.

KRONOTHERM flex is a proven, flexible, highly insulating and water-vapour-permeable fibreboard insulating material that reliably keeps out heat, cold and noise. KRONOTHERM flex excels not only because of its outstanding insulating properties, but also because of its environmental benefits and the fact that it forms part of an integrated system.

Special characteristics

• Flexible, highly insulating, water-vapour-permeable, fibreboard insulating material
• Extremely wide sections can be installed unattached, simply by pressing them into the space.
• Very high heat storage capacity for excellent protection from summer heat
• Sections only need to be cut slightly larger to remain securely in place when wedged into a space.
• Tear-proof, dimensionally stable and non-settling
• Superb indoor climate, thanks to moisture-regulating properties and a high sorption capacity
• Excellent noise absorption
• Recyclable
• Pleasant to the touch and skin-friendly
• Made from forest thinnings to ensure sustainability and environmental friendliness
• Easy to handle and use
• Approved by the building authorities and monitored by a neutral organisation

You can experience the full range of applications of our KRONOTHERM feel-good programme and our other KRONO system modules in our interactive KRONO Feel-Good House.

System for exterior walls

KRONOPLY exterior wall system with F30 fire rating:

Components from the inside out:

9.5 mm of plasterboard
12 mm of KRONOPLY F****
200 mm of KRONOTHERM flex / KVH solid construction timber (as little as 160 mm is possible)
15 mm of Kronotec WP or DP50

U-factor: 0.21 W/m²K
Phase shift: 11 hours
Amplitude attenuation: 94%

Alternatively, there can be 12.5 mm of plasterboard on the inside and a 60-mm-thick installation layer, insulated with KRONOTHERM flex.

Properties

Storage

Processing

Produced and monitored in accordance with EN 13171 and German approval Z-23.15-1581

Characteristics	Test standard	Identification
Designation	DIN EN 13171	WF – EN 13171 – T2 – AF5
Thermal conductivity λD	DIN EN 13171	0.038 W/m*K
Thermal transmittance coefficient λ	DIN V 4108-4	0.039 W/m*K
Fire behaviour	DIN EN 13501-1	E
Bulk density	EN 1602	ca. 55 kg/m³
Water vapour diffusion factor μ	EN 12667	≤ 5
Specific thermal storage capacity	DIN EN ISO 10456	2100 J/kg*K
Substances contained		Wood fibre, binding fibres, ammonia phosophate
Waste key	EAK-code	030105

Applications according to DIN 4108-10

Roofs
DAD	Exterior insulation of roofs and ceilings, protected against weathering, insulation behind cladding, dk - not Compression-resistant
DI	Interior insulation of roofs and ceilings, zk - no tensile strength requirements
DZ	Interior insulation of roofs and ceilings, zk - Insulation between rafters, double-skin roofs, non-walkable but accessible attic floors
Walls
WH	Insulation of half-timbered and wood-frame buildings
WTR	Interior insulation of exterior walls, zk – no tensile strength requirements
WI	Insulation of partition walls

size: 1350 x 575 mm



Thickness [mm]	Format [mm]	Pieces per pack	Pakete per pallet	Area per pack [m²]	Area per pallet [m²]	Weight per pallet [kg]
40	1350 x 575	8	14	6,21	86,94	211
50	1350 x 575	9	10	6,99	69,86	212
60	1350 x 575	6	12	4,66	55,89	204
80	1350 x 575	4	14	3,11	43,47	211
100	1350 x 575	3	14	2,33	32,60	199
120	1350 x 575	3	12	2,33	27,95	204
140	1350 x 575	2	16	1,55	24,84	211
160	1350 x 575	2	14	1,55	21,74	211
180	1350 x 575	2	12	1,55	18,63	204
200	1350 x 575	2	10	1,55	15,53	191
220	1350 x 575	2	10	1,55	15,53	208
240	1350 x 575	2	8	1,55	12,42	184

Additional formats and thicknesses available on request

• Cut sections slightly wider than the spaces they will be installed in, adding at least 1% of the clear width between studs, joists or rafters.
• Also add at least 1% in the longitudinal direction.
• Lay on top of rafters on a dry, load-distributing substrate.
• Parts that will be exposed on the outside must be airtight on the inside.
• After laying, immediately cover on the underside with a water-carrying plastic sheet or board.
  

Insulationknife

For fast, efficient cutting of sections and smaller pieces at thebuilding site, we recommend using the Kronotherm insulation knife. Its bladewas specially developed for cutting KRONOTHERM flex and KRONOTHERM hardboard,and only slight pressure needs to be exerted to easily cut smooth, neat edges.The KRONOTHERM insulation knife is made of high-quality stainless steel fromSolingen, Germany.