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Celtic Sustainables is a UK-based specialist committed to providing natural, healthy, and sustainable building products, with a strong focus on eco‑friendly paints, insulation, lime, and passive water systems. Serving the building conservation sector, homeowners, and eco‑enthusiasts, the company offers expert guidance and materials that respect heritage fabric, support indoor air quality, and reduce environmental impact—helping preserve both buildings and health. Since its establishment in Ceredigion, Celtic Sustainables has built a reputation for combining traditional breathable materials—such as sheep’s wool insulation, hemp, woodfibre, clay paints, and lime mortars—with modern manufacturing ethics. Their curated range includes plant‑based and clay paints, mineral silicate exterior coatings, and Osmo wood oils, all of which are low‑VOC, non‑toxic, and supportive of allergy-friendly living. Demonstrating significant appeal to heritage conservation projects, Celtic Sustainables offers lime products—including traditional, hydraulic, and one‑coat lime plaster—and silicate renders that allow moisture movement in old walls. Premium brands like Keim offer water‑borne mineral silicate paints that are extremely durable, vapour‑permeable, and historically proven, with some finishes lasting over a century—ideal for sensitive restoration work. Their portfolio extends beyond finishes to include natural insulation systems that combine thermal performance with breathability—such as sheep’s wool, hemp, woodfibre, and recycled alternatives—plus rainwater harvesting kits, eco‑fans for wood stoves, and specialist painting accessories and pigments. The synergy of products enables building professionals to approach restoration and retrofit projects holistically, combining moisture regulation, thermal efficiency, and material compatibility. Celtic Sustainables also offers technical support and advocacy, regularly publishing blogs and guides such as “Guide to Natural Fibre Insulation” and case studies on heritage damp restoration. Their advice covers product selection, breathable system design, passive energy use, and health impacts—ensuring that conservation professionals, homeowners, and enthusiasts can confidently apply natural materials in restoration and sustainable retrofit settings. In summary, Celtic Sustainables excels by blending a commitment to traditional building science with modern eco‑standards, offering high-performance breathable paints, lime systems, natural insulation, and renewables-friendly accessories. Their emphasis on environmental health, heritage compatibility, and technical guidance makes them a trusted partner in the UK’s heritage conservation field.
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| Principal Areas of Work: | Eco Paints, Clay Paint, Lime Products, Natural Insulation, Wood Finishes, Silicate Paints, Rainwater Harvesting, Stove Fans, Painting Accessories, Pigments |
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| Capabilities and Specialisms: | Breathable Materials, Lime Mortar Systems, Mineral Silicate Finishes, Natural Fibre Insulation, Low‑VOC Paints, Moisture Regulation, Allergy‑Friendly Products, Passive Energy Solutions, Technical Conservation Advice, Historic Fabric Compatibility |
| Company Trading Name: | Celtic Sustainables Limited |
| Company Number: | 04071622 |
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