UV Coating Wooden Grain Fiber Cement Siding Board For External Wall

Thickness

7.5mm

Widths

200mm

Lengths

Less than 3000mm

Content of chloride ion

0%

Water content

<10%

Water aborsption

<40%

Percentage of water swelling

≤0.25%

Water vapour permeability

No water vapour after 24hours' test

Thermal conductivity

≤0.20 W/mk

Thermal shrinkage

≤0.5%

Fire Resistance

Incombustibility A1 Class(GB8624-2006)

Fire Resistance limit

≥240minutes

Bending Strength

≥10Mpa

Impact strength

≥5.0KJ/m²

Screw-withdrawal force

≥60N/mm

Freezing resistance

No cracking and layering after 25 times of freeze thawing test

Sound Insulation

>46db

Radioactivity

<1.0lRa,<1.0lr

Asbestos

Asbestos free

Formaldehyde release

No formaldehyde