WHETHER the frame is wood, UPVC or aluminium, removing paint from a window frame can be a tricky, messy business.

All too often, the paint may be removed only to reveal that you've damaged the under-surface during the process.

Other times, the under-surface may be fine, but annoying flecks of paint get left behind; spoiling the overall finished appearance when the job is completed and your new paint is applied.

Traditional methods such as sanding, scraping, using DCM chemical strippers or heat guns, all damage the under surface, and take a long time to complete the job.


Biostrip Paint Stripper is fast becoming the global alternative to  solvent-based paint strippers. Proven in bench tests to work faster than traditional  products, it removes every trace of paint without causing any damage to the under-surface, whether its aluminium, wood or UPVC.

Using Biostrip to remove paint from window frames

  • Brush on a generous layer of Biostrip, ensuring that the treated surfaces remain wet and don't dry out
  • Allow the paint to blister - this takes 30 minutes to 1 hour, depending on the thickness of the paint and the nu,ber of layers
  • Next, either rinse or scrape to remove the softened coating
  • Repeat the process if any coating remains
  • Wash area and allow to dry thoroughly before repainting


500g will cover up to 3m²

Tips for getting the best out of Biostrip

  • For a faster strip time, scuff or scribe the surface lightly before applying Biostrip
  • Gently use wire wool to remove softened varnish in awkward corners and/or profiles
  • If the paint to be removed is several layers thick, a second coat of Biostrip might be required (however, laboratory tests and responses from customers show that, more often than not, Biostrip will work its way through several layers of paint at one time, meaning just one application might be necessary even for tougher jobs