Siniat
SINIAT 13mm Weather Defence
SINIAT 13mm Weather Defence
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SINIAT 13mm Weather Defence is a high-performance external sheathing board, engineered to provide outstanding weather resistance during and after construction. Designed as an external substrate for lightweight steel and timber-framed buildings, Weather Defence offers superior moisture protection, wind resistance, and long-term durability, making it the ideal choice for façade systems and external wall linings.
With an advanced water-repellent core and reinforced facer, Weather Defence 13mm reduces water absorption, preventing mould growth, swelling, and deterioration. It eliminates the need for temporary weather protection, allowing builders to continue interior work sooner, even in exposed conditions.
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Shipping & Returns
We offer fast and reliable delivery across Perth and surrounding areas, with most orders processed within 1–2 business days. Delivery within the Perth metropolitan area is charged at a flat rate of $120. For regional deliveries, fees are calculated based on distance and order size; please contact us for a custom quote. All orders are packed with care to ensure they arrive in top condition.
At Online Plasterboard Supplies, we strive to ensure your satisfaction with every purchase. Please review your order carefully before finalizing, as we do not accept returns for change of mind, incorrect purchases, or surplus materials. If your order arrives damaged, defective, incorrect, or incomplete, notify us within 48 hours with your order number, clear photos, and a description of the issue. We'll assess the situation and determine if a replacement, refund, or store credit is appropriate. Some products may have manufacturer warranties; contact us for assistance with claims. Approved returns must be unused, in original packaging, pre-approved by our team, and may incur a restocking fee, typically 20%.