Modern windows and doors should require little maintenance and your Niddal guarantee covers you against damages and defects, however it does not cover you from general wear and tear and damages brought about by every day use, here are a few tips on how to maintain your windows and doors, as with a little bit of attention and regular routine maintenance you can easily prevent problems occurring and prolong the life of your product.
DO NOT use solvent-based or abrasive cleaners on any of our products and never use any type of penetrating lubricant (wd40 type spray or similar) on any hardware as this will invalidate any warranty!