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Gefyra Waterproofing Ltd · Company 15038390 · Trading heritage since 1993
Active, accounts up to date·subcontractor & developer·Head office Radlett
Founded in 1993 in Split, Croatia, Gefyra specialises in waterproofing, thermal insulation, repair and strengthening of concrete and masonry structures. The company offers advanced systems for underground structures, ensuring watertight protection and longevity for tunnels, and high-performance membranes and coatings for bridge decks. Gefyra also provides robust solutions for flat roofs and integrated waterproofing systems for green roofs, alongside durable protection for balconies, terraces, and car parks.
Their expertise extends to bespoke systems for basements, retaining walls, and below-grade structures, as well as watertight solutions for wet areas, pools, reservoirs, and tanks. Gefyra also offers concrete repair and strengthening solutions designed to extend the life of structures. They combine careful assessment with proven membranes, injection systems, and precise detailing to protect structures throughout their lifespan.
Gefyra's international presence includes branches in Ljubljana and London, enabling them to undertake projects globally. They emphasize quality, safety, and environmental sustainability, backed by ISO 9001, ISO 14001, and ISO 45001 certifications. The company provides long-term warranties ranging from 2 to 25 years, ensuring client satisfaction and structural integrity.
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Gefyra is synonymous with reliable waterproofing, thermal insulation and structural strengthening, locally and globally. Quality without compromise. Their listed services include Waterproofing, Damp proofing, Insulation, Civil engineering and Concrete works.
Gefyra Waterproofing Ltd is registered at 33 Shenleybury Cottages Shenley, Radlett, WD7 9DJ, in London.
Gefyra Waterproofing Ltd states that it works across Slovenia, Croatia and Chile.
Accounts filed for the year to 2026 report 6 employees, which places the company in the 1-9 employees band.
Gefyra Waterproofing Ltd does not disclose turnover: UK small-company accounts are not required to. Based on creditors in its filed accounts, turnover is likely to fall between £970k and £3.9m. This is an estimate, not a filed figure.
Companies House lists Gefyra Waterproofing Ltd as active, with accounts most recently made up to 2026-08-31.
Gefyra Waterproofing Ltd displays ISO 9001, ISO 14001 and ISO 45001 on its website.
Gefyra Waterproofing Ltd works in Infrastructure, Residential and Commercial.
Gefyra Waterproofing Ltd was incorporated on 2023-07-31, though the company says it has traded since 1993.
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