Rohden Portas e Janelas

• ▸Country: Brazil
• ▸Location: Santa Catarina - Brazilian woodworking heartland
• ▸Primary materials: Timber and uPVC
• ▸Market position: Premium doors and windows
• ▸Climate context: Subtropical - wet winter, humid summer, high annual rainfall
• ▸Key risk: Timber swelling, seal failure, and finish degradation in high humidity

• ▸Timber windows
• ▸Timber doors
• ▸uPVC windows and doors

Timber windows in Santa Catarina's subtropical climate are a high-maintenance product compared to aluminium or uPVC. The wood species, surface finish, and seal condition are all variables that affect cleaning protocol - and all three change over the life of the window. Wood swells in high humidity. Santa Catarina winter brings sustained high humidity and rainfall - timber window frames absorb moisture and expand. If the expansion is within the design tolerance, no damage occurs. If the window has existing seal or paint failure, moisture entry accelerates decay. Premium timber windows typically carry oil or lacquer finishes. These finishes protect the timber from moisture. Cleaning products that are safe on glass or aluminium can strip or damage timber finishes if they contact the frame surface. Solvent-based cleaners, acidic glass cleaners, and alkaline degreasers are all potential timber finish hazards.

This is how I clean Rohden Portas e Janelas windows. The tools and technique below come from 25 years of daily professional work on the glass. Every step has been tested on real installations and adapted specifically for Rohden Portas e Janelas systems.

• ✕Do not use acid-based glass cleaners near timber frames - runoff strips oil and lacquer finishes
• ✕Do not use solvent-based cleaners on any timber frame surface
• ✕Do not allow water to pool at timber frame joints or on timber sill surfaces
• ✕Do not leave damp cloths in contact with timber frame surfaces
• ✕Do not use abrasive products on any timber surface
• ✕Do not ignore seal failure at timber frame joints - delay causes wood decay in Santa Catarina humidity

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