Fosroc Dekguard Primer, 20L, Protective Coating System for Concrete & Facades

Fosroc Dekguard Primer DG 20L is a single-component, water-based acrylic primer designed to create a protective, even base on substrates such as concrete, masonry, wood, and other surfaces. It forms a barrier between the substrate and the subsequent coating, promoting adhesion, durability, and faster finishing.

It adheres well to cementitious surfaces, metal (including primed steel and aluminium in some cases), brick, tiles, wood, PVC, and other prepared substrates. Expect improved water resistance, reduced substrate absorption, and a smoother base for topcoats, with good adhesion across a wide range of materials.

Key specs: single-component, water-based acrylic primer in 20 L packaging; low odor; fast drying; excellent adhesion; suitable for priming before waterproofing membranes or coatings; versatile across many substrates; provides a durable protective layer and smooth undercoat for subsequent finishes.

Ensure the surface is clean, dry, and free from oil, grease, dust, laitance, and loosely adhered coatings. Repair any surface defects, allow wet trades to fully cure, and only apply to substrates within the recommended temperature and surface condition guidelines for optimal adhesion.

Dekguard Primer DG 20L can be applied by brush, roller, or spray to achieve an even, full-coverage film. Apply a uniform coat, avoid ponding, and allow to dry before applying the subsequent coating system. Recoat windows will depend on ambient conditions and the specific topcoat being used.

It is designed as an undercoat or bonding primer before applying waterproofing membranes, sealants, or topcoats. It also helps provide a smooth, level surface for water-based acrylics, alkyd enamels, and other compatible coatings.

As a water-based acrylic primer, it typically has low odor and is easier to handle than solvent-based primers. Follow the Safety Data Sheet (SDS) for PPE requirements, ventilation, storage, and spills. Store sealed in a cool, dry place away from heat sources.

Store in the original container, tightly closed, in a cool, dry place. Avoid freezing. Shelf life is typically around 12 months when stored correctly, but always check the product label or SDS for the exact expiration guidance.

Yes, the primer is formulated to withstand outdoor exposure and moisture transmission, making it suitable for exterior surfaces and coastal environments when used as part of a complete, weather-resistant coating system.

If you’re choosing among primers on Fepy, consider factors like substrate compatibility, drying time, odor, and topcoat compatibility. For example, other Fosroc primers such as Dekguard Primer DG 5L, DG 10L, or DG 25L variants may be offered on Fepy with different packaging and coverage. Compare 20 L vs smaller/larger packs to optimize cost per square meter and determine the best fit for your project scale. Alternatives you might review on Fepy include: