Why Do Window Fittings Stick Again After Lubrication?

You've lubricated the window fittings and enjoyed a couple of weeks of smooth operation – but after 2–3 months you're back to the same problem: the mechanism sticks and the window is hard to open. Why?

Our technician Andrius has noticed a clear pattern over many years of practice: the problem is usually not the lubricant as such, but the wrong choice of lubricant.

Why Standard Oil Lubricant Damages Fittings

Oil-based aerosols and lubricants are popular for a simple reason – they are sold in every hardware shop and everyone knows them. But inside window fittings, they cause the problem rather than solving it.

Here's what happens: the oil lubricant initially reduces friction. But after a few weeks it starts collecting dust and fine dirt particles. A thick, sticky mass forms – and the mechanism becomes even harder to move than it was before lubrication.

Andrius visited a client whose fittings had been lubricated about 6 months earlier. The picture was telling: the mechanism moved as if through rubber, and thickened lubricant with trapped dirt was visible inside. All because of the wrong lubricant.

Important: These lubricants are only suitable for external points – hinge bolt heads, key holes. Never spray them inside the fitting mechanism.

How GreenteQ Works: Not Oil, But Teflon

GreenteQ lubricant is designed specifically for window and door fittings. Its operating principle differs fundamentally from standard lubricants.

Initially it is liquid – this is important, because the liquid form allows it to penetrate fully into every part of the mechanism. After a few hours the liquid components evaporate, leaving only one thing: PTFE (Teflon).

PTFE is one of the most slippery technical materials in the world. Teflon:

• Practically does not attract dust
• Does not attract dirt
• Retains its properties for up to 1.5 years

Compare: oil lubricants theoretically need to be reapplied every 2–3 months – and even then the situation gradually worsens. GreenteQ – once a year or less.

How to Test This at Home

A simple experiment: take two sheets of paper and spray GreenteQ on one, a standard oil lubricant on the other. The next day, rub with your finger.

The GreenteQ-treated sheet will have only a smooth, dry coating – nothing sticks to it. The oil lubricant sheet will be sticky and will collect dust and fluff. This difference shows exactly what will happen inside your fittings after a few months.

What to Do If Fittings Are Already Sticking

If your windows are sticking despite previous lubrication – there is a high probability that a sticky mixture of oil residue and dust has accumulated inside. In this case, simple lubrication will no longer help: the old lubricant must first be cleaned out, and only then can fresh lubricant be applied.

Our technicians complete the full cycle in a single visit: they clean out the old lubricant, lubricate the mechanisms with the correct lubricant, and adjust the fittings for the season. We provide a guarantee on all work.

Windows sticking or hard to operate? A technician will come, clean, and lubricate – the job is done in a single visit.