{"title":"Polymer Screed Additive \/ Mortar Admix","description":"\u003cp\u003eShop \u003cstrong\u003epolymer screed additives and mortar admixtures\u003c\/strong\u003e for enhancing the performance of cementitious screeds and mortars. These liquid additives improve flexibility, adhesion, water resistance, and workability, allowing traditional screeds to meet the demands of modern flooring installations.\u003c\/p\u003e","products":[{"product_id":"ardex-e25-mortar-admix-5kg","title":"Ardex E25 Screed Additive, 5kg","description":"\u003cp\u003eARDEX E 25 is a synthetic resin dispersion additive for use with ARDEX floor levelling compounds. When diluted with water and used in place of tap water during mixing, it improves tensile strength, abrasion resistance and bond performance for high-traffic environments.\u003c\/p\u003e\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cdiv class=\"sw-benefits-grid\"\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eImproves tensile strength for heavy traffic areas\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eEnhanced abrasion resistance on exposed screeds\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eSuitable as a temporary wearing surface additive\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eCompatible with all ARDEX levelling compounds\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eSimple dilution ratio for easy mixing\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eImproves bond to difficult substrates\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eIdeal for high-traffic commercial floors\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eEconomical additive for demanding applications\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eDilute 1 part E25 with 2.5–5 parts water by volume. Use in place of tap water when mixing ARDEX levelling compounds.\u003c\/p\u003e\n\u003ch3\u003eCoverage\u003c\/h3\u003e\n\u003cp\u003e5 kg container. Dilution ratio depends on end use — refer to ARDEX E 25 technical datasheet.\u003c\/p\u003e","brand":"ARDEX","offers":[{"title":"Single Bag (5kg)","offer_id":51124529430867,"sku":"ARDEX-25-5KG","price":73.26,"currency_code":"GBP","in_stock":true},{"title":"Half Pallet (40 x 5kg)","offer_id":53447340196179,"sku":"ARDEX-25-5KG-HP","price":2825.93,"currency_code":"GBP","in_stock":true},{"title":"Full Pallet (80 x 5kg)","offer_id":53447340228947,"sku":"ARDEX-25-5KG-FP","price":5651.86,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0954\/6720\/9043\/files\/Screenshot2026-01-15at17.03.56.png?v=1768493205"},{"product_id":"ronafix-universal-25l","title":"Ronafix Universal, 25L","description":"\u003cp\u003eRonafix Universal is a versatile polymer liquid additive used to improve the performance of cementitious screeds, renders and concrete repairs. When used as a partial or full replacement for mixing water, it enhances adhesion, flexibility, water resistance and durability of the finished mix. Supplied in 25-litre containers.\u003c\/p\u003e\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cdiv class=\"sw-benefits-grid\"\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eImproves adhesion, flexibility and water resistance\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eVersatile — suitable for screeds, renders and repairs\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eEnhances durability and wear resistance\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eSimple to use — replaces mixing water partially or fully\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eCompatible with Portland cement and sand mixes\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eReduces shrinkage and cracking risk\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eSuitable for interior and exterior applications\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUse as a partial or full replacement for mixing water according to the required application. For general-purpose improvement, dilute 1 part Ronafix to 3 parts water. For maximum performance (bonding coats, waterproof renders), use undiluted. Add the required amount of liquid to the mixer, then gradually add cement and aggregate while mixing. Apply at temperatures between +5°C and +30°C.\u003c\/p\u003e\n\u003ch3\u003eCoverage\u003c\/h3\u003e\n\u003cp\u003eDosage varies by application — typically 1–5 litres per 25 kg of cement depending on dilution ratio and required performance. One 25-litre container treats approximately 5–25 bags of cement.\u003c\/p\u003e","brand":"RONACRETE","offers":[{"title":"Default Title","offer_id":51124649099603,"sku":"RONA-25L-25L","price":218.7,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0954\/6720\/9043\/files\/Screenshot2026-01-14at13.14.24.png?v=1768392882"},{"product_id":"ardex-e100-screeding-mortar-bonding-additive-5kg","title":"Ardex E100 Screeding Mortar \u0026 Bonding Additive 5kg","description":"\u003cp\u003eARDEX E 100 is an acrylic-based additive for cement\/sand screeding and rendering mortars, and for making bonding slurries\/grouts — including with ARDEX A 38 screeding cement. It improves strength, elasticity, workability and bond, and reduces early-age cracking. For internal and external use.\u003c\/p\u003e\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cdiv class=\"sw-benefits-grid\"\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eIncreases compressive and tensile strength of the mortar\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eImproves elasticity and reduces early-age cracking\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eImproves workability without adding more water\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eAllows bonded cement\/sand screeds down to 15mm thick\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eUse with ARDEX A 38 as a bonding slurry\/grout\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eSuitable for internal and external use\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eReduces surface dusting and improves abrasion resistance\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eBonding slurry adhesion over 2.5 N\/mm² at 28 days\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eScreed and render mortars: add 3 kg ARDEX E 100 per 25 kg of Portland cement, plus the extra water needed for the required consistency. Bonding slurry: dilute ARDEX E 100 1:1 with water, then stir in cement (or 1:1 cement\/sand) to a creamy, brushable slurry. Brush the slurry onto the prepared substrate and lay the screed or render into it while it is still wet.\u003c\/p\u003e\n\u003ch3\u003eCoverage\u003c\/h3\u003e\n\u003cp\u003eSupplied in 5 kg containers. Addition rate 3 kg per 25 kg of Portland cement for screed and render mortars; dilute 1:1 with water for bonding slurries.\u003c\/p\u003e","brand":"ARDEX","offers":[{"title":"Single Bag (5kg)","offer_id":51305557033299,"sku":"ARDEX-E100-5KG","price":72.78,"currency_code":"GBP","in_stock":true},{"title":"Half Pallet (40 x 5kg)","offer_id":53447351468371,"sku":"ARDEX-E100-5KG-HP","price":2807.14,"currency_code":"GBP","in_stock":true},{"title":"Full Pallet (80 x 5kg)","offer_id":53447351501139,"sku":"ARDEX-E100-5KG-FP","price":5614.27,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0954\/6720\/9043\/files\/Screenshot2025-12-18at11.20.14.png?v=1766053236"},{"product_id":"flowcrete-isocrete-polymer-70-25kg","title":"Flowcrete Isocrete Polymer 70 25kg","description":"\u003cp\u003eFlowcrete Isocrete Polymer 70 is a liquid bonding agent and screed additive – an aqueous dispersion of a vinyl acetate\/ethylene\/vinyl chloride terpolymer. It can be used diluted as a primer, mixed with cement as a bonding grout for sand and cement screeds, K-Screed, Fast-K Screed and Screedfast, or added to screed mixes such as Isogran.\u003c\/p\u003e\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cdiv class=\"sw-benefits-grid\"\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eBonding agent, primer and screed additive in one product\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eSupplied as a liquid – 25 kg (23.0 litres)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003ePrime at 1 part Polymer 70 to 3 parts water\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eMix with cement for a bonding grout under sand and cement screeds, K-Screed, Fast-K Screed and Screedfast\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eUsed as an additive in screed mixes such as Isogran\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eSolvent-free and practically odourless\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eWhite emulsion, clear on drying\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eFor priming, dilute 1 part Polymer 70 with 3 parts water and allow to dry – more than 3 hours, typically overnight. For a bonding grout, mix diluted Polymer 70 (1:3) with cement to a creamy consistency, approx. 1 part diluted polymer to 3 parts cement by volume, and lay the screed into the grout while it is still wet. Internal air and floor temperatures must be above 5°C. Store frost-free at 5–30°C; shelf life 12 months unopened.\u003c\/p\u003e\n\u003ch3\u003eCoverage\u003c\/h3\u003e\n\u003cp\u003eSupplied as 25 kg (23.0 litres) of liquid, density approx. 1.1 kg\/l. Coverage depends on the use and substrate porosity – the manufacturer’s product sheet does not give a coverage rate.\u003c\/p\u003e","brand":"FLOWCRETE","offers":[{"title":"Single Bag (25kg)","offer_id":51305558802771,"sku":"FLOWCRETE-70-25KG","price":330.06,"currency_code":"GBP","in_stock":true},{"title":"Half Pallet (20 x 25kg)","offer_id":53447352451411,"sku":"FLOWCRETE-70-25KG-HP","price":6337.15,"currency_code":"GBP","in_stock":true},{"title":"Full Pallet (40 x 25kg)","offer_id":53447352516947,"sku":"FLOWCRETE-70-25KG-FP","price":11618.11,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0954\/6720\/9043\/files\/Screenshot2025-12-18at10.49.59.png?v=1766051465"},{"product_id":"tekcem-durascreed-screed-hardening-additive-1-3kg","title":"Tekcem Durascreed – High Performance Screed Hardening Additive 1.3kg (box of 4)","description":"\u003cp\u003eTekcem Durascreed is a polymer-based screed hardening additive that transforms standard sand and cement screeds into high-strength Cat A, C40, F7 screeds. By adding Durascreed to the mix, minimum screed thickness can be reduced to 35 mm for floating applications or 20 mm unbonded — saving materials and reducing floor build-up height.\u003c\/p\u003e\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cdiv class=\"sw-benefits-grid\"\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eProduces Cat A, C40, F7 high-strength screeds from standard mixes\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eReduces minimum floating screed thickness to 35 mm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eReduces minimum unbonded screed thickness to 20 mm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eFaster drying times compared to standard sand and cement screeds\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eSimple dosing — one container per 2.5 bags of cement\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eNo special mixing equipment required\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eSupplied in convenient 1.3-litre containers (box of 4)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sw-benefit\"\u003e\n\u003cdiv class=\"sw-check\"\u003e​\u003c\/div\u003e\n\u003cspan\u003eIdeal for fast-track projects and reduced floor build-ups\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eAdd one 1.3-litre container of Durascreed to the gauging water for every 2.5 × 25 kg bags of cement (62.5 kg). Mix the screed in the normal way using a forced-action mixer. Lay and compact using standard screeding techniques. The additive is compatible with all sharp sands and standard screed mixes.\u003c\/p\u003e\n\u003ch3\u003eCoverage\u003c\/h3\u003e\n\u003cp\u003eOne 1.3-litre container treats 62.5 kg of cement. For a 50 mm floating screed at a typical mix design, one container covers approximately 3–4 m². A box of 4 containers treats 250 kg of cement, covering approximately 12–16 m² at 50 mm thickness.\u003c\/p\u003e","brand":"TEKCEM","offers":[{"title":"Default Title","offer_id":51305576038739,"sku":"TEKCEM-TEKCEM-1.3KG","price":105.07,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0954\/6720\/9043\/files\/Tekcem-durascreed-1_cafbc74f-c093-4039-a33e-a1ae0981d329.png?v=1749026152"}],"url":"https:\/\/shop.screedworks.co.uk\/collections\/polymer-screed-additive-mortar-admix.oembed","provider":"Screed Works Shop","version":"1.0","type":"link"}