Low vapour permeability membranes

The KF low permeability membrane has found its application as an initial roofing layer in building with habitable as well as non-habitable loft spaces. The low permeability membrane proves to be a very effective insulation of walls in buildings of skeleton structure (wooden or metal). In buildings in which function and simple roof shapes do not require application of membranes offering high vapour permeability and, at the same time, high strength and low material costs play major role, the low vapour permeability membrane can be used.

technical parameters	KF 96 SILVER	KF 110 STANDARD
basis weight [g/m2]	98	110
water penetration resistance before and after artificial ageing	klasa W2	klasa W2
tear resistance lengthwise [N/5cm] crosswise [N/5cm]	600 500	430 350
UV radiation resistance [month]	2	2
application temperature range [°C]	od -40°C do +80°C	od -40°C do +80°C
vapour permeability coefficient Sd [m]	1	1
flammability class	F	F
packing [roll/pallet]	50	50
roll dimensions [m]	1,5 x 50	1,5 x 50

The non-permeable underlay used in conjunction with EUROTOP high vapour permeability
membranes makes it possible to retain proper climatic conditions within the habitable loft spaces. In offer there are two types of non-permeable underlays: Termofol 90 and Eurotop Activ V110.

• Termofol 90 provides very effective protection against moisture penetrating into insulation and, thanks to a thin layer of aluminium film used, it partially reflects the heat radiating from the loft.
• Eurotop Activ V110 is an active non-permeable underlay allowing vapour to flow inside and outside the room in controlled volumes, resulting in better drying of the roof. Eurotop Activ V110 can be also used as a wind insulation in ventilated walls when installed on the outer side of the wall.

technical parameters	TERMOFOL 90	EUROTOP ACTIV V 110
basis weight [g/m2]	90	110
resistance to tearing lengthwise N/5cm crosswise N/5cm	230 120	200 130
resistance to weather conditions (months)	3	3
application temperature range [°C]	od -40°C do +80°C	od -40°C do +120°C
vapour permeability coefficient Sd [m]	>70	2
flammability class	E	E
packing [roll/pallet]	50	36
roll dimensions [m]	1,5 x 50	1,5 x 50