Fenestrum Euro window and patio door and terrace system products are covered by a 5-year warranty. 5-year warranty.
Fenestrum will always provide prompt customer service to ensure qualified after-sales and after-sales services.
For over 25 years, we’ve handcrafted premium timber windows and doors that meet A, A+ and A++ energy performance classes—delivering warm, long-lasting solutions for the Lithuanian and UK markets.
We use German Roto Frank AG fittings that are ergonomic, durable and easily adjustable even by the owner. We paint and varnish wooden windows and patio doors with Finnish Teknos products proven by time and customers around the world - for smooth and long-lasting use.
Our guarantee is backed by top-class materials and time-tested technology. Fenestrum We use the most durable knotting method to connect the point. Each piece is individually glazed, sanded, primed, impregnated and painted by hand. Most of the team has been working together for ~20 years. We provide qualified warranty and post-warranty service.
We use multi-layer, knot-free, quarter-sawn laminated timber with moisture-resistant adhesives—built to resist warping, twisting, and splitting. We glaze with energy-efficient units: standard, safety (impact-resistant), acoustic, or light/solar-control. For even greater longevity, choose exterior aluminium cladding.
