WeatherBloc gypsum board is designed to be durable in installation areas of high humidity. As well as solving the problems of swelling, shrinking and cracking, it also prevents black mold stains. Suitable for installation with exterior balcony ceiling and as outdoor eaves.

WeatherBloc consists of anti-mold and humid resistant agents which includes a special waterproof coated back providing efficient waterproofing and anti-mold features.

Special Features

  • A specially designed formulation and waterproof coating provides a less than 3% water absorption rate.
  • Mold resistance - ASTM D 3273 Standard certified.
  • Available in both flat and ventilated models.
  • As easy to install as regular standard gypsum board.
  • Provides smooth and seamless ceiling.
Physical Properties
  • Dimensions : 1200 x 2400mm.
  • Thickness : 9mm.
  • Edge : Tapered / Square
  • Paper Colour : Green front
    : Brown back (Specially coated)
  • Average Weight : 5.8 kg / sqm.
  • Environmentally friendly and recyclable.
  • Eaves, balcony ceilings.
  • Areas with high humidity.
  • 1200 x 2400 x 9 mm.

Information provided are for reference purpose only and due care has been taken to ensure accuracy at time of publication. Products, specifications and requirements may vary according to geographical locations and applications. As each project is unique, please contact your local Siam Gypsum representative for further assessment.