Joint Insulation Foam (Backer Rod) Professional foam used for insulating concrete joints and cracks before applying silicone and insulation materials. It provides a strong result and prevents water and air leakage. Features: High quality and durable Easy to install and use Suitable for construction and finishing projects Moisture and heat resistant Size: 20 / 25 Available quantity: 5 bags only (subject to availability) Price: 25 SAR per bag Special offer: 5 bags for only 120 SAR