Parex (Sikawall 580) Monorex GM LW1 Limestone White 25kg | Pallet of 40

High‑Performance External Render for Trade & DIY Parex Monorex GM is a professional‑grade, through‑coloured render for vertical masonry and concrete. The one‑coat system delivers a durable, breathable, colour‑consistent finish with no need for painting. Ideal for new builds, extensions, and refurbishments, it offers multiple textures (scraped, spray-textured, smoothed) and a full range of colours to suit both traditional and contemporary designs. Key Features & Benefits Through‑coloured — colour runs through the render; no painting required One‑coat application — saves time and labour Weather‑resistant & breathable — built for UK conditions Hand or machine applied — suitable for diesel/electric spray machines Versatile finishes — scraped, spray‑textured (tyrolean to roughcast), or smoothed Granulometry — 0–2.5 mm (finish dependent) Certifications — EN 998‑1 (OC CS II / W2), Reaction to Fire: A1, BBA Certificate No. 21/5888 Use Cases Exterior walls on houses, extensions, garages, and garden rooms Refurbishment of tired or failed render New build facades needing a quick, long‑lasting decorative finish Commercial and residential projects requiring reliable, colour‑consistent results Technical & Product Details Bag size 25 kg Pallet contents 40 bags (≈1 tonne) Coverage (guidance) Scraped finish @ 15 mm: 1.0–1.1 m² per 25 kg bag Spray‑textured @ 10 mm: 1.4–1.5 m² per 25 kg bag Roughcast @ 20 mm: 0.9–1.0 m² per 25 kg bag Coverage varies with substrate, technique and wastage. Water addition (per bag) 5.2–6.3 L Maximum grain size 0–2.5 mm Compressive strength Class CS II (EN 998‑1) Capillary water absorption Class W2 (EN 998‑1) Reaction to fire A1 (EN 13501‑1) Shelf life 12 months from manufacture (unopened) Storage Store dry, off the ground, protected from frost; keep bags sealed until use Substrate Compatibility & Prep Suitable on sound, clean blockwork, brick, masonry and cast concrete Highly porous backgrounds may require a suction‑control/bonding primer (e.g. Parex Micro Gobetis 3000 or equivalent) Not for gypsum‑based backgrounds or previously painted/sealed substrates unless correctly treated Application Conditions Apply between +5 °C and +30 °C Avoid direct sun, rain, high winds and frost Do not apply to frozen/damp substrates or when frost is expected within 24 hours For high‑exposure/coastal areas, use increased thickness as per the application guide For consistent colour across elevations, use the same batch number where possible Supporting Resources Technical Data Sheet (Sika) Manufacturer Product Page NSAI Agrément (Ireland) BBA Certificate No. 21/5888 (see approvals on Sika page) Always follow the manufacturer’s guidance on preparation, mixing and curing. Test a small area if in doubt.