Simple, manufacturer-backed care steps that keep UPVC and aluminium windows and doors performing well for years — based on Liniar's and the wider industry's own published maintenance guidance, not generic advice.
Both UPVC and aluminium windows and doors are designed to be low-maintenance — but "low" isn't "none". A few minutes a few times a year keeps frames, seals and hardware working properly and looking right for decades.
Liniar's own published maintenance guidance for UPVC windows and doors:
Powder-coated aluminium follows the same general principle as UPVC — regular gentle cleaning, nothing abrasive:
| Task | What to do | How often |
|---|---|---|
| Lubricate hinges & locks | Silicone-based spray or light machine oil (Liniar recommends 3-in-1 oil) | Periodically, or if stiff to operate |
| Check weep holes / drainage slots | Clear leaves and debris so water drains freely | A couple of times a year |
| Check mastic seals | Make sure the seal is intact around the frame to avoid draughts | Periodically |
| Clean hardware | Warm soapy water, same as the frame — never abrasive cleaners | Same time as frame cleaning |
Remove jewellery before cleaning. Liniar's own guidance specifically notes removing hand and wrist jewellery before cleaning frames, to avoid scratching the finish.
Liniar recommends cleaning non-foiled UPVC frames every few months with warm soapy water. There's no need for anything more frequent for either UPVC or aluminium under normal conditions — regular gentle cleaning is enough.
No. Liniar is explicit that foiled UPVC products shouldn't be cleaned with any cleaning fluid or solvent-based cleaner, and abrasive cleaners shouldn't be used on hardware or self-cleaning glass. The same non-abrasive approach applies to powder-coated aluminium.
Yes — clean hardware at the same time as the frames, and lubricate moving parts periodically with a silicone-based spray or a light machine oil (Liniar specifically recommends 3-in-1 oil).
Weep holes (drainage slots) let rainwater that gets into the frame drain back out. Liniar's guidance is to check periodically that they're free of blockages — leaves and debris are the usual culprit.