NBS Source
Siniat Weather Defence™ Board

Application

For use externally as a sheathing board.

Description

Weather Defence™ is a revolutionary new external sheathing board, faced with water repellent material for superior weather protection. Strong, highly moisture resistant and A1 non combustible. Weather Defence is a faster way to a weather tight building compared to traditional sheathing board products. Complies with BS EN 15283 Type GM-H1, GM-I and GM-F.


Features and benefits:


  • Dimensionally stable, reliable airtightness
  • Quick and easy to cut and install saving time and reducing installed cost
  • Water, weather and mould resistant, can now be left installed and exposed for up to 12 months on site before you need to complete the final cladding
  • No need for cutting area, power tools or dust extractor
  • Can eliminate the need for breathable membrane saving time and reducing installed cost
  • Double BBA certified
  • Fully A1 non-combustible, compliant for structures above 18 m.


Standards:

To BS EN 12524, BS EN 12572, BS EN 15283‐1 and Euroclass A1 to BS EN 13501‐1, Class 0 to Building Regulations (E&W).

General information

Color

Purple

Finish

Matt

Material

Gypsum

Size

1200 x 2400 mm

(Width x length).

Uniclass 2015

Pr_25_71_35_52 Moisture-resistant gypsum plasterboardsPrimary

CAWS

K10/115 Metal stud partition system

K10/125 Metal stud partition system

K10/15 Lining on timber

K10/155 Wall lining system (metal studs)

K10/165 Wall lining system (metal framing)

K10/175 Wall lining system (metal furrings)

K10/185 Wall lining system (adhesive)

K10/205 Lining on timber

K10/220 Proprietary suspended ceiling system

K10/245 Ceiling lining on timber

K10/25 Ceiling lining on timber

K10/30 Metal stud

K10/35 Wall lining system (metal framing)

K10/41 Wall lining system (metal furrings)

K10/45 Wall lining system (adhesive)

K10/50 Suspended ceiling system on metal framing

Product range

GTEC Boards

Specification data - Moisture-resistant gypsum plasterboards Enhanced data

Core

Moisture resistant.

Paper facings

Moisture resistant.

Thickness (nominal)

12.5 mm.

Edge profile

Square.

Colour

Purple on the front face and white on the back face.

Finish:

Matt-faced.

Mass

10.8 kg/m².

Density

860 kg/m³.

Thermal resistance

R-value.

0.05 m²K/W.

ThermalConductivity

To BS EN 12524.

0.25 W/m·K.

Water vapour resistance

To BS EN 12524.

μ = 8.

MoistureContent

<1%.

Moisture resistance

<3%.

After two hours total immersion in water.

Tear strength - longitudinal

≥680 N.

To BS EN 15283‐1.

Tensile strength - transverse

≥310 N.

To BS EN 15283‐1.

Reaction to fire

A1 Non‐combustible.

Euroclass A1 to BS EN 13501‐1, Class 0 to Building Regulations (E&W).

Board material

Gypsum.

Environmental information

Contains Red List materials

No

Country of product manufacture

France

Embodied carbon

0.241 kgCO2e/kg

Cradle to gate.

Recyclability

Gypsum core is recyclable.

Recycled content

12%

% post-consumer content.

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