Additives & Primers
-
Pronto Building Supplies Bycol Dark 1L
Bycol Dark is an air-entraining plasticiser formulated to improve the workability and cohesiveness of mortar and concrete. The 1L size suits small tasks and site adjustments. It helps reduce segregation and bleed water, making mixes easier to handle and finish. Ideal for bricklaying, rendering, and general construction.
-
Sandhub Bycol clear 20 litre
20 litre Bycol Clear liquid plasticiser formulated to improve mortar workability, cohesion, and finish. Reduces water demand, aiding strength development and minimising shrinkage cracking. Suitable for bricklaying and blockwork with easy dosing into the mix water. The clear formulation helps maintain consistent mortar colour on light or decorative finishes. Ideal for residential and commercial masonry projects. Always follow manufacturer directions for dosage, mixing, and safety to achieve consistent, professional results.
$144.79
-
Sandhub Bycol clear 5 litre
5 litre Bycol Clear plasticiser for bricklaying and blockwork mortars. Improves plasticity, cohesion, and finish while reducing the need for excess water. Ideal when consistent colour is required on light mortars and architectural finishes. Simple to use—dose directly into mix water as per instructions. A practical size for small jobs and touch-ups, minimising waste. Ensures smoother laying, cleaner joints, and improved productivity for trades and DIY users.
-
Sandhub Bycol dark 20 litre
20 litre Bycol Dark liquid mortar plasticiser that enhances workability and bond in bricklaying and blockwork. Reduces water demand for stronger, more durable mortar while aiding smooth trowelling. The dark additive is suited to traditional or darker mortar colours. Supplied in a trade-size drum for larger projects and ongoing site use. Easy to measure and dose into mixing water. Follow manufacturer guidelines for dosage, mixing, and safe storage to achieve consistent results.
$153.78
-
Sandhub Bycol dark 5 litre
5 litre Bycol Dark mortar plasticiser designed to enhance workability and cohesion while reducing water content in masonry mixes. Supports smooth trowelling and clean joints with improved bond to bricks and blocks. The dark formulation suits traditional or darker mortar finishes. Easy to dose into mixing water for reliable performance on site. Ideal for smaller projects, maintenance, and detailing. Refer to manufacturer instructions for correct dosage, mixing procedures, and safe handling.
-
Sydney Hardware Bycol – Clear – 1L
Bycol Clear is a liquid plasticiser that improves the workability and finish of concrete and mortar by reducing water demand and segregation. It assists in achieving smoother placement and improved trowelling with consistent mixes. Suitable for general concreting, bricklaying, and render applications. Dose according to instructions and avoid overuse. Compatible with most cement types. Always mix thoroughly and maintain accurate batching practices. Store in a cool, dry place and follow the manufacturer’s handling and safety guidelines.
-
Sydney Hardware Bycol – Clear – 20L
Bycol Clear enhances mortar and concrete workability, delivering improved flow and finishing while reducing water content. Suitable for bricklaying, rendering, and general concreting. Easy to dose and mix into standard cementitious systems. Follow recommended dosage rates to avoid excessive air entrainment. Store in a cool, dry environment and keep containers sealed when not in use. Refer to the manufacturer’s instructions for compatibility, handling, and safety guidance to achieve consistent, high‑quality results.
-
Sydney Hardware Bycol – Clear – 5L
Bycol Clear is a workability additive for concrete and mortar that reduces water demand and enhances flow, cohesion, and finish. Ideal for large projects and continuous mixing operations. Assists in minimising segregation and improving trowelability. Dose as specified per cement content and ambient conditions. Avoid overdosing and ensure consistent batching for reliable results. Compatible with typical cement blends. Store sealed and protect from extreme temperatures. Refer to the data sheet for detailed usage and safety advice.
-
Sydney Hardware Bycol – Dark – 20L
Bycol Dark is a liquid plasticiser designed to improve the workability, cohesion, and finish of concrete and mortar mixes. Reduces water demand and assists in achieving a smoother, more consistent placement. Suitable for commercial pours, bricklaying, and rendering. Dose as per the technical guidance and avoid overdosing. Compatible with common cement types and supplementary cementitious materials. Store sealed in a cool, dry location. Always follow the data sheet for safe handling and correct application methods.
-
Sydney Hardware Bycol – Dark – 5L
Bycol Dark improves the workability and cohesion of concrete and mortar, helping to reduce water addition while maintaining flow and finish quality. Suitable for general construction, bricklaying, and rendering tasks. Dose accurately and mix thoroughly for optimum results. Avoid excessive use. Store in a cool, dry area and keep containers sealed when not in use. Consult the product data sheet for dosage rates, compatibility, safety information, and best practices on site.
-
Sydney Hardware CR25 Westox - 20 Lts
CR25 Westox is a penetrating, breathable water repellent designed to reduce water ingress and efflorescence in masonry, brick, sandstone, and concrete. It helps preserve natural appearance while improving resistance to moisture and weathering. Suitable for heritage facades and contemporary builds. Apply to clean, dry substrates by brush, roller, or spray to saturation as per instructions. Allows vapour transmission to minimise trapped moisture. Always test a small area to confirm appearance and performance before full application.
$238.00
-
Sydney Hardware CR25 Westox - 5 Lts
CR25 Westox is a deep-penetrating, breathable water-repellent treatment for brick, stone, and concrete. It reduces capillary absorption, helping control damp ingress and surface salt staining while maintaining a natural look. Ideal for walls, facades, and porous masonry exposed to weather. Apply to clean, sound substrates by brush, roller, or low-pressure spray to saturation. Test a discreet area first to check appearance and coverage. Follow application rates, curing times, and safety guidance for optimal results.
-
Sydney Hardware Calcium Chloride Concrete Additive – 1kg / 25kg
Calcium chloride accelerator speeds early set and strength gain in concrete and mortars, particularly useful in cold weather or time‑critical pours. Supports reduced bleed water and earlier finishing. Dose strictly according to the technical guidance and project requirements. Not recommended where chloride content must be restricted or for use with steel reinforcement susceptible to corrosion. Ensure uniform distribution by adding to mix water. Store sealed in a dry place and follow handling and safety instructions.
-
Pronto Building Supplies Cemcrete 1L
Cemcrete is a bonding and sealing agent used as a primer or admixture to improve adhesion and durability of cement-based materials. The 1L bottle suits small works and repairs. It reduces porosity, enhances bond strength, and improves performance of renders, screeds, and patching compounds. Ideal for professional surface preparation.
-
Pronto Building Supplies Cemcrete 20L
Cemcrete is a versatile bonding and sealing agent for concrete and renders, used as a primer or admixture to enhance adhesion and durability. The 20L drum provides coverage for large projects. It reduces dusting and porosity, supporting reliable overlays and finishes. Suitable for interior and exterior applications.
$220.00
-
Pronto Building Supplies Cemcrete 5L
Cemcrete bonding and sealing agent improves adhesion and surface stability for cement-based applications. The 5L bottle is convenient for medium projects. Use as a primer on porous substrates or as an admixture in renders and screeds to enhance durability and reduce cracking. Suitable for professional preparation work.
-
Blacktown Building Supplies Cemstik 1 Litre Cement Additive Boral
Boral Cemstik is a professional-grade bonding agent formulated to improve adhesion between new and existing cementitious surfaces. Used as a primer or admixture, it enhances bond strength and reduces the risk of delamination in renders, screeds, toppings, and patch repairs. Cemstik assists with improved flexibility and durability, supporting cleaner, longer-lasting finishes. It is easy to apply, compatible with a wide range of cement mixes, and suitable for interior and exterior use across construction, refurbishment, and maintenance projects.
-
Blacktown Building Supplies Cemstik 4 Litre Cement Additive Boral
Boral Cemstik is a high-performance bonding agent designed to promote excellent adhesion between new and existing cement-based materials. Applied as a primer or used as an admixture, it strengthens bonds in renders, screeds, toppings, and patch repairs, helping reduce cracking and surface failure. Cemstik is easy to use and compatible with common cement systems. Suitable for interior and exterior applications, it delivers reliable, durable results for professional trades working on construction, renovation, and maintenance projects.
-
Sydney Hardware DAVCO PRIME X - 1 Lt
DAVCO PRIME X is an acrylic primer formulated to seal porous substrates and improve adhesion of tile adhesives, screeds, and levelling compounds. It reduces pinholing and uneven absorption for consistent application and finish. Suitable for concrete, renders, and cement sheeting. Fast drying with easy roller or brush application. Use on clean, sound surfaces free from dust and contaminants. Follow the product data sheet for dilution, coverage, and drying times. For internal and external use as directed.
-
Sydney Hardware DAVCO PRIME X - 5 lts
DAVCO PRIME X is a trade-grade acrylic primer designed to seal porous surfaces, promoting adhesion and uniformity for tile adhesives and levelling systems. It minimises suction, reducing defects such as pinholes and patchy coverage. Suitable for concrete, render, and fibre cement boards. Easy to apply by brush, roller, or spray. Ensure the substrate is clean and sound. Refer to the data sheet for any dilution requirements, coverage rates, and drying times before proceeding with tiling.
-
Sydney Hardware DAVCO ULTRA PRIME - 5 lts
DAVCO ULTRA PRIME is a high-performance primer formulated to promote adhesion over a wide range of porous and dense substrates, including existing tiles (when prepared), concrete, and screeds. It balances surface porosity and enhances bond strength for tile adhesives and toppings. Fast drying and easy to apply by roller or brush. Use on clean, sound substrates and follow surface preparation guidelines. Refer to the product data sheet for coverage, drying times, and compatibility details.
-
Sydney Hardware Davelastic Davco - 20 lts
Davelastic Davco is a latex additive that increases flexibility, adhesion, and water resistance of cement-based tile adhesives and grouts. Recommended for demanding installations, including balconies, wet areas, and substrates subject to movement. Enhances durability and reduces the risk of cracking under thermal and structural stress. Mix according to the data sheet with compatible Davco products. Apply to clean, sound surfaces and observe open times and curing guidelines for optimal performance in internal and external areas.
$205.00
-
Sydney Hardware Davelastic Davco - 5 lts
Davelastic Davco is a polymer latex additive formulated to improve flexibility, adhesion, and moisture resistance in cement-based adhesives and grouts. Ideal for residential and commercial tiling in wet areas and on challenging substrates. Provides enhanced performance where standard mixes may be insufficient. Mix as directed with compatible Davco products and apply to clean, prepared substrates. Follow the data sheet for mixing ratios, pot life, and curing conditions to achieve consistent, long‑lasting installations.
-
Builders Mitre 10 Diggers Bycol Clear Plasticiser 1L
Diggers Bycol Clear Plasticiser improves the workability of cement mortars and renders by entraining fine air bubbles, making mixes creamier and easier to spread. The clear formulation won’t darken light-coloured mortars, supporting uniform, clean finishes. It can help reduce cracking from shrinkage and aids finish quality on bricklaying, blockwork, and rendering. Simply dose according to instructions for consistent results. A trusted additive for tradies seeking smoother application and improved handling characteristics without excessive water addition.
-
Builders Mitre 10 Diggers Bycol Clear Plasticiser 20L
This 20L Diggers Bycol Clear Plasticiser is ideal for larger projects, enhancing mortar and render workability by entraining fine air for a smoother, creamier mix. The clear additive maintains lighter mortar tones, helping achieve uniform finishes. It supports reduced shrinkage cracking and improved trowelability on bricklaying, blockwork, and rendering tasks. Dose accurately as directed for consistent performance. A reliable, economical choice for trades seeking consistent, easy-to-apply mixes without overwetting or loss of strength.
-
Builders Mitre 10 Diggers Bycol Clear Plasticiser 5L
The 5L Diggers Bycol Clear Plasticiser boosts the workability of cement mortars and renders for cleaner, easier finishing. By entraining fine air, it creates a creamier mix that spreads and trowels smoothly, reducing the need to add excess water. The clear formula preserves lighter mortar colours. Suitable for bricklaying, blockwork, and rendering, it can also help reduce shrinkage-related cracking. Measure and add according to label directions for reliable, repeatable results on site or in the workshop.
-
Builders Mitre 10 Diggers Bycol Dark Plasticiser 5L
Diggers Bycol Dark Plasticiser improves mortar and render handling by entraining fine air for a smoother, more workable mix. The dark formulation helps blend with darker sands and cements, supporting consistent colour in finished joints and coatings. Ideal for bricklaying, blockwork, and rendering, it can reduce shrinkage cracking and aid finishing quality. Dose accurately to achieve predictable results without overwetting. A trusted additive for trades seeking better trowelability and clean, uniform outcomes on site.
-
Builders Mitre 10 Diggers Bycol Dark Plasticizer 20L
This 20L Diggers Bycol Dark Plasticiser offers bulk supply for larger projects, enhancing mortar and render workability for smooth, consistent application. The dark formulation suits mixes where a deeper tone is preferred, helping maintain colour uniformity. By entraining fine air, it creates a creamy mix that spreads and trowels well while supporting reduced shrinkage cracking. Accurately measure and add as directed to ensure reliable, repeatable performance across bricklaying, blockwork, and rendering applications.
$102.00
-
Sandhub Efflock 1 litre
Efflock 1 Litre is a professional liquid admixture designed to block efflorescence and improve water repellency in concrete, mortar, render, screed and grout. It penetrates capillaries to reduce water absorption, helping prevent white salt staining and moisture migration. Ideal for new pours and mixes around tiles, masonry, stone and paving. Efflock maintains breathability while improving durability and stain resistance. Easy to dose, it won’t alter colour or workability when used as directed, making it a reliable solution for long-lasting, cleaner finishes.
$108.98
-
Pronto Building Supplies Efflock 1L
Efflock is an integral waterproofer for concrete and mortar, designed to reduce water absorption and efflorescence. The 1L bottle suits small projects and targeted applications. It improves durability and moisture resistance in slabs, renders, and blockwork. Ideal for wet areas, retaining walls, and exterior masonry.
$106.70
-
Sandhub Efflock 20 litre
Efflock 20 Litre is a trade-sized admixture for controlling efflorescence and moisture ingress in concrete, mortar, render, screed and grout. It reduces capillary absorption, helping stop salt deposits and damp-related staining while retaining substrate breathability. Ideal for large-scale paving, façade, tile and masonry projects requiring consistent protection. Easy to integrate into mixes without affecting colour or finish, Efflock enhances durability and lowers maintenance. Use in wet areas, outdoors and high-moisture environments to achieve cleaner, longer-lasting surfaces and improved resistance to water and contaminants.
$1,453.67
-
Pronto Building Supplies Efflock 20L
Efflock is an integral waterproofing admixture for concrete and mortar, reducing capillary absorption and efflorescence. The 20L drum covers larger projects, enhancing durability in slabs, renders, and masonry exposed to moisture. Ideal for wet areas, basements, retaining walls, and external applications where long-term damp-proofing is required.
$1,460.80
-
Sandhub Efflock 5 litre
Efflock 5 Litre provides robust efflorescence control and water repellency for concrete, mortar, render, screed and grout. It reduces water uptake through capillaries, helping prevent white salt staining and damp migration while allowing substrates to breathe. Ideal for mid-sized projects such as patios, retaining walls and tiled areas, it integrates easily without altering appearance or workability. Suitable for new installations and repairs, Efflock improves surface durability, keeps finishes cleaner for longer, and supports reliable performance across residential, commercial and landscaping applications.
$457.82
-
Pronto Building Supplies Efflock 5L
Efflock is a liquid admixture designed to minimise efflorescence and reduce water absorption in concrete, mortar, render, and screeds. The 5L trade pack treats multiple small jobs or a larger project. Chloride‑free and easy to dose, it improves durability, reduces staining, and enhances long‑term appearance. Add directly to the mixing water or as specified. Ideal for facades, paving, blockwork, and architectural finishes. Follow the manufacturer’s dosage instructions for best results.
$423.50
-
Sydney Hardware Euromix Render 20KG - 20 KG
Euromix Render in a 20 kg bag is a high‑quality, preblended cement render formulated for smooth, consistent application over brick and block surfaces. Just add water to achieve a workable mix with excellent adhesion and coverage. Suitable for internal and external walls prior to painting or textured finishes. Provides a durable, even substrate and helps correct minor surface irregularities. Ideal for residential and commercial projects, trowel or machine applied. Delivers reliable setting characteristics and a professional finish under Australian site conditions.
-
Sydney Hardware Eversol Solvent for Silacryl & Pavacryl - 1 Lt
Eversol solvent is formulated for use with Silacryl and Pavacryl acrylic membrane systems. It effectively cleans tools and equipment, removes fresh spills, and can be used to thin compatible coatings to improve flow and workability. Ideal for detail work and reactivation of tack on laps and joins during membrane installation. Suitable for professional waterproofing preparation and cleanup. Always test on a small area first, use in well‑ventilated spaces, and follow the coating manufacturer’s directions for safe handling and correct dilution ratios.
-
Sydney Hardware Eversol Solvent for Silacryl & Pavacryl - 20 Lts
Eversol solvent is a professional-grade cleaner and thinner designed for Silacryl and Pavacryl acrylic membranes. Use it to clean tools, remove uncured spills, and adjust viscosity for improved application in larger projects. The 20 L capacity suits high‑volume waterproofing crews and commercial sites. Assists with lap reactivation for seamless joins. Test compatibility before use, ensure ventilation, and follow the membrane manufacturer’s guidance for dilution and safety. Store sealed when not in use and keep away from ignition sources and direct sunlight.
$240.00
-
Sydney Hardware FASTFIX WET SHIELD FAST FIX - 1 LTS
FASTFIX WET SHIELD FAST FIX 1 L delivers rapid, brush‑on waterproofing for emergency and routine repairs. Formulated to seal leaks quickly on roofs, gutters, flashings and downpipes, it adheres to damp surfaces for immediate results. Ideal for metal, concrete, masonry and bituminous substrates. Forms a flexible, weather‑resistant membrane that withstands harsh Australian conditions. Perfect for maintenance crews and contractors needing a quick, reliable fix without complex preparation. Reduces downtime and protects against water ingress while longer‑term solutions are planned or installed.
-
Sydney Hardware FASTFIX WET SHIELD FAST FIX - 2.5 LTS
FASTFIX WET SHIELD FAST FIX 2.5 L is a high‑performance, brush‑applied waterproofing sealant for urgent leak sealing and maintenance. It bonds to damp substrates, forming a durable, flexible membrane across roofs, gutters and flashings. Suitable for metal, concrete, masonry and bituminous surfaces. Ideal for contractors seeking a fast, reliable fix in variable weather. Provides long‑lasting water resistance and UV stability for Australian conditions. A practical mid‑size pack for small to medium jobs, maintenance programs and facility management teams.
-
Sydney Hardware FASTFIX WET SHIELD FAST FIX - 5 LTS
FASTFIX WET SHIELD FAST FIX 5 L is a trade‑size, brush‑on waterproofing solution designed for fast leak repairs and maintenance on roofs, gutters and building envelopes. It adheres to damp surfaces, creating a robust, flexible membrane that resists weathering and UV exposure. Suitable for metal, concrete, masonry and bituminous substrates. Ideal for contractors tackling larger areas or multiple repairs. Helps prevent water ingress and extends service life of roofing components under tough Australian climate conditions, without complicated surface preparation.
$130.60
-
Sydney Hardware Hydrochloric Acid - 1 Lt
Industrial-grade hydrochloric acid for etching concrete, removing mortar smear, and cleaning efflorescence from brickwork and pavers. Ideal for heavy-duty surface preparation prior to coating or sealing. Dilute to suit task severity and always rinse thoroughly with clean water after treatment. Not recommended for limestone, marble, or other acid‑sensitive substrates. Use appropriate PPE, avoid contact with metals and vegetation, and follow local disposal regulations. Suitable for professional masonry cleaning, new build washdowns, and remedial preparation on external hard surfaces.
-
Sydney Hardware Hydrochloric Acid - 2
Powerful hydrochloric acid for etching concrete slabs, removing cement smear, and treating stubborn efflorescence on masonry. The 2 L size is convenient for small to medium preparation and cleaning tasks. Always dilute appropriately, pre‑wet surrounding areas, and rinse surfaces thoroughly after application. Avoid use on acid‑sensitive stone and metals. Use gloves, goggles, and respiratory protection in well‑ventilated conditions. Follow site environmental controls and dispose of rinse water responsibly. Ideal for trades requiring consistent results before sealing or coating.
-
Sydney Hardware Hydrochloric Acid - 20 Lts
Commercial-volume hydrochloric acid for heavy-duty masonry cleaning, cement smear removal, and concrete etching on large projects. Suitable for brick cleaning after laying, efflorescence treatment, and preparing concrete prior to coatings. Dilute as required and neutralise and rinse thoroughly after use. Not suitable for marble, limestone, terrazzo, or other acid‑sensitive substrates. Use full PPE and ensure adequate ventilation. Follow site safety plans and local regulations for handling, storage, and disposal. Ideal for professional contractors and building maintenance teams.
-
Sydney Hardware Hydrochloric Acid - 5 Lts
Professional hydrochloric acid for removing mortar haze, efflorescence, and for etching concrete prior to coatings or adhesives. The 5 L pack balances portability with ample capacity for multiple areas or repeated treatments. Always dilute and pre‑test in a discreet spot. Rinse thoroughly to remove residues and neutralise as required. Avoid use on acid-sensitive stone and galvanised surfaces. Wear gloves, goggles, and protective clothing. Store upright in a cool, ventilated area away from incompatible materials and ignition sources.
-
Sydney Hardware LANKO 751 BONDING - 20 Lts
LANKO 751 BONDING 20 L is an acrylic primer and admixture that improves adhesion, flexibility and durability of cement‑based renders, screeds and patching mortars. It reduces shrinkage and enhances bond to difficult substrates, helping prevent debonding and failures. Use as a primer over concrete, masonry and existing surfaces before applying toppings. Also suitable as a mixing additive to increase performance and workability. Ideal for tiling, floor preparation and general construction applications. Trusted by trades for consistent results across new builds and refurbishments.
$153.00
-
Sydney Hardware LANKO 751 BONDING - 5LTS
LANKO 751 BONDING 5 L is a versatile acrylic primer and admixture that boosts adhesion and performance of cement‑based renders, screeds and patching mortars. It helps reduce shrinkage and cracking while improving flexibility and bond strength to concrete and masonry. Use as a primer before toppings or as a mix additive to enhance workability and durability. Suited to tiling preparation, floor levelling and general repair tasks. A convenient size for smaller projects, renovations and maintenance work in Australian conditions.
-
Sydney Hardware LANOTEC RELEASE AGENT - 2.9 LTS
LANOTEC RELEASE AGENT 2.9 L is a high‑performance, biodegradable formwork release oil that ensures clean, stain‑free concrete demoulding. It reduces adhesion between concrete and formply or steel, improving surface finish and extending formwork life. Easy to apply by spray or brush, it delivers consistent results while minimising blowholes and sticking. Ideal for precast and in‑situ pours on commercial or residential sites. Non‑petroleum, lanolin‑based chemistry supports safer handling and environmentally conscious construction practices without compromising performance.
-
Sandhub Lanko 751 Lankolatex 20 litre
Lanko 751 Lankolatex 20 Litre is an SBR latex bonding agent and admixture that improves adhesion, flexibility and water resistance in cement-based mixes. Ideal for renders, screeds, patching, toppings and bonding slurries, it enhances cohesion and reduces cracking. Use as a primer or additive to increase durability on challenging substrates and in high-wear areas. Easy to mix and apply, it supports reliable, professional finishes in internal and external applications across construction and refurbishment projects.
$144.79
You have seen 96 out of 147 products
