Ublo

Ublo makes minimalist windows in Seoul with a deliberately short component list: fewer frames, thinner sightlines and a structure engineered to cut both embodied and operational carbon. Founded in 2018 by Korean architect Naree Kim and Dutch architect Robert-Jan van Santen, who had worked together at a façade engineering office, the company is backed by Infobank and advised technically by VS-A.

The philosophy extends past the frame: repairability and long service life, single-use packaging avoided, unnecessary printing dropped, marketing that does not push over-consumption. Government-backed R&D programmes keep feeding performance work, and the office sits at 2F, 1, Bukchon-ro 6-gil, Jongno-gu, in the old heart of Seoul.