SAFEBUILD shielding underlay membrane is a four-layer membrane with a microneedled aluminum foil. The micro-needling with 200,000 tiny holes per square meter makes the material highly permeable to water vapor. The micro-holes are so small that they have no influence on the sensationally high shielding attenuation of 111 dB - one of the highest shielding attenuation values we have ever had in a series product. 
 
The four-layer SAFEBUILD U230 underlay membrane can be used universally in exterior and interior areas for roofs, façades and drywall construction. The membrane optimizes the wind tightness of the construction and stops rain. The aluminium foil protects against the penetration of warm air in summer and cold air in winter.
 
Technical data
shields high frequency electromagnetic fields (HF) at 111 dB / surface conductivity: 0.0018 Ohm (square resistance) at 1GHz
with an electrically conductive surface this product shields low-frequency alternating electric fields (LF).
sd value: 0.034 m = very high water vapor permeability
Grammage: 230 g/m² / Thickness: 0.45 mm
Color: Black / Silver
Material layers: PP fleece / diffusion-open functional film / PP fleece / micro-needled aluminum foil
CE Declaration of performance according to EN 13859-1:2010; EN 13859-2:2010
Fire behavior: E
Water resistance: W1
Tensile strength: 210-270 N/50 mm
Tear strength: 150-160 N
Temperature resistance: -40°C to 80°C
Hazardous ingredients: Not included
sd value: 0.034 m
VOC emissions: 0 (class A+)
Produced in-house at YSHIELD in Germany
 
Size
Width: 100 cm
Length: by the meter / 50 m roll
 
Installation
For the best shielding result, the membranes must always be applied overlapping, without a gap, and holes for fastening must be kept as small as possible. To protect against corrosion, the aluminium side must always be laid towards the inside of the house and the brand imprint should be visible.
Verify the levels before and after with an RF, AC electric, AC magnetic field meter and body voltage meter
We recommend that the location, quantity and proper installation be determined by a trained EMF specialist like Safer EMF. This material will reflect Radio Frequency Radiation and improper installation or use could result in increased exposure. 
 
Grounding
This product with an electrically conductive surface (the aluminium side) should be grounded.
 
Estimated Time to Delivery
Warehouse stock: 7-14 days