For sealing porous sandstone, stabilising friable asbestos sheeting, or priming low-porosity tilt-up slabs before waterproofing, Azcoseal penetrates deeply to bind surfaces and block water penetration. This clear, solvent-based acrylic sealer dries to a semi-gloss satin finish, preventing dust dusting, salt spray damage, and rain penetration while serving as an adhesion-promoting primer for subsequent membranes.
Azcoseal uses a low-viscosity, solvent-borne acrylic formulation that sinks deep into the pores of masonry, concrete, and cementitious substrates. It incorporates cross-linking technology to lock down loose particles, seal surface pores, and create a tough, resilient film. When used as a penetrative primer, this cross-linking mechanism improves the physical bond of subsequent water-based and polyurethane membranes, including Duram Multithane, Duram 195, Durabit, and Azcothane ranges. For exposed decorative brickwork, sandstone, or pavers, it acts as a weatherproofing barrier that resists UV degradation and minimises dirt pick-up.
Surfaces must be sound, stable, dry, clean, and free of dust, efflorescence, or loose material. Remove efflorescence and wash the area, allowing it to dry fully before application. Clean mould using a water blaster with chlorine, and vacuum any loose debris. Grind cracks to a V-profile and fill with Duram sealant, and fill concrete voids with Duram WB/Primeseal modified mortar. Apply Azcoseal by brush, roller, or spray, ensuring subsequent coats are applied within 24 hours of the previous coat for optimal adhesion. Clean all tools and equipment immediately after use with Duram Solvent before the acrylic cures.
Yes, Azcoseal provides an attractive 'wet-look' sealer over pavers, brick, sandstone, and masonry surfaces. Always conduct a test patch first, as solvents can dissolve entrapped salts in some pavers or terracotta tiles, which may cause discolouration.
No, Azcoseal is not a vapour barrier. Do not use it in areas with high moisture, over wet or seeping surfaces, or where there is a risk of entrapped moisture that could cause bubbling. For these situations, Duram Primeseal MC is recommended.
Azcoseal is touch dry in 1-2 hours and fully cured within 24 hours at 25°C and 50% RH. For best results when priming, apply your subsequent Duram membrane or coating as soon as Azcoseal has fully cured and all solvents have evaporated.
Avoid using Azcoseal on particle board, chip board, metal, non-porous surfaces, shiny or very smooth concrete, glazed tiles, marble, or terrazzo. For particle or chip board, Duram Primeseal MC is the correct choice.
| Application | Key benefit | Primary trades |
|---|---|---|
| Weatherproofing porous surfaces | Forms a waterproof barrier against water ingress, wind-driven rain, and salt spray, protecting brick and masonry. | Bricklayers, restorers, general builders |
| Penetrative primer for Duram membranes | Enhances adhesion and waterproofing properties of subsequent Duram waterproofing membranes (e.g., Multithane, Duram 195, Durabit, Azcothane ranges), particularly on high-density substrates like tilt-up slabs. | Waterproofers, concrete contractors |
| Encapsulating friable asbestos sheeting | Binds loose fibres, sealing the surface for safer management. | Asbestos remediation specialists |
| "Wet-look" clear sealer for decorative surfaces | Dries clear with an attractive satin finish, enhancing the appearance of pavers, brick, sandstone, and masonry. Minimises dirt pick-up. | Landscapers, renovators, domestic users |
| Concrete and dust sealer | Penetrates deep to fill pores, bed down dust, and minimise surface fragmentation, creating a tougher, resilient finish. | Concrete placers, floor preparers |
| Reactivating existing acrylic coatings | Prepares old acrylic coatings for recoating, improving inter-coat adhesion without full removal. | Painters, maintenance contractors |
Ensure substrate is clean, dry, sound, and free of contaminants. Remove efflorescence, mold, and loose material using pressure washing or mechanical means.
Apply evenly at 4 m²/L per coat. Work well into substrate to ensure penetration.
Use low-pressure spray equipment for large areas. Back-roll for even film and penetration.
Clean tools and adjacent surfaces with Duram Solvent before product cures. Wash hands with warm soapy water and a stiff-bristle brush.
Danger: Flammable liquid and vapour. May be fatal if swallowed and enters airways. Causes skin irritation. Causes serious eye irritation. Harmful if inhaled. May cause respiratory irritation, drowsiness or dizziness. May damage fertility. May damage the unborn child. Toxic to aquatic life with long lasting effects. Poisons Schedule S5.
Wear safety glasses with side shields or chemical goggles. Wear chemical-protective gloves (e.g., PVC). Wear safety footwear. Use overalls and a PVC apron. A PVC protective suit may be required for severe exposure. Ensure ready access to an eyewash unit and safety shower.
Use only in well-ventilated areas. Prevent vapour concentration in hollows and sumps. Use local exhaust ventilation or a process enclosure. Ensure ventilation equipment is explosion-resistant and spark-free.
Store in original containers in an approved flammable liquid storage area, away from incompatible materials, in a cool, dry, well-ventilated place. Keep cool and locked up. Protect containers against physical damage. Dispose of contents/container to an authorised hazardous waste collection point in accordance with local regulations.
Proper surface preparation is essential for adhesion and performance. Ensure all substrates are sound, stable, dry, and clean before application.
Includes: Concrete, Cement, Cement Render, Block & Brickwork, FC and CFC Sheeting, Blue Board, AAC (Hebel), Composite Sheeting, Plywood, Cement Pavers, Sandstone, Masonry Surfaces.
Surface prep: Ensure surfaces are free of dust, loose or friable material, efflorescence, and any contaminants. Remove efflorescence and wash the area, allowing it to dry thoroughly. Fill voids with Duram WB/Primeseal modified mortar. Grind out cracks to a 'V' shape and fill with Duram sealant.
Primer: Not required. Azcoseal is a self-priming formula for these porous substrates.
Surface prep: Surfaces must be clean, dry, and free from any contaminants. Remove loose or flaking material.
Primer: Not required. Azcoseal can reactivate existing acrylics prior to recoating.
Surface prep: Clean thoroughly. Remove mould with a chlorine solution and water blaster, then vacuum loose material. Allow to dry completely.
Primer: Not required. However, test areas are highly recommended as solvents may dissolve entrapped salts, potentially discolouring the coating or tile.
| Property | Value |
|---|---|
| Product Type | Clear Acrylic Sealer and Primer |
| Base Chemistry | Acrylic in solvent solution |
| Physical State | Liquid |
| Appearance | Clear amber liquid |
| Odour | No odour (SDS) |
| Relative Density | 0.92 |
| Initial Boiling Point | 161 °C |
| Flash Point | 48 °C |
| Solubility in Water | Immiscible |
| Application Temperature Range | 5°C to 30°C |
| Service Temperature Range | 10°C to 50°C |
| Coverage Rate (average) | 4 m² per L per coat (may vary with porosity) |
| Minimum Coats (Encapsulating/Weatherproof) | Two coats at 4 m²/L per coat |
| Minimum Coats (Primer) | One coat at 4 m²/L |
| Minimum Coats (Trafficable Wet-Look) | Three coats at 4 m²/L per coat |
| Touch Dry | 1 to 2 hours (at 25°C, 50% RH) |
| Dry Time | 2 to 6 hours (at 25°C, 50% RH) |
| Full Cure | Within 24 hours (at 25°C, 50% RH) |
| Shelf Life (unopened) | Up to 12 months |
| Shelf Life (after resealing) | 6 months |
| Packaging | 15L Pail |
Here are some common examples on where Duram Azcoseal used by our customers.
