Josef Meeth Fensterfabrik

Quick Facts

Brand at a Glance

Product Range

Why This System

Step 1 of 2: Manufacturer Recommendations

Official Care Guidance

Glass

• ✓Clean with lukewarm water and a small amount of mild pH-neutral dish soap.
• ✕No solvents of any kind on or near the glass edge seals.
• ✕No ammonia-based products - this rules out most commercial glass sprays.
• ✓No abrasive cloths, steel wool, or scouring pads.
• ✓No sharp tools or razor blades on the glass surface.
• ✓No high-pressure water directed at the glass, frame joints, or hardware.

uPVC Frames

• ✓Clean with a soft, non-abrasive cloth and lukewarm water with mild pH-neutral soap.
• ✓Rinse thoroughly after cleaning - soap residue left to dry on uPVC leaves a dull film.
• ✕No solvents. Acetone, cellulose thinners, and similar products will melt or degrade the uPVC surface - the damage is permanent.
• ✕No ammonia. Ammonia-based products discolour and degrade uPVC over time.
• ✕No bleach. Bleach causes permanent discolouration and attacks the uPVC compound.
• ✓No abrasive cleaning agents, powders, or scouring pads.
• ✕No steam cleaners. Hot steam can warp or damage uPVC profiles.
• ✓No household remedies such as toothpaste, oven spray, or nail polish remover.

Hardware

• ✓Lubricate all moving hardware - hinges, locking points, tilt-turn mechanisms - at least once per year.
• ✓Use a light machine oil or specialist window hardware lubricant.
• ✓Keep drainage slots in the frame sill clear of debris and dirt.
• ✓If hardware becomes stiff or the window is difficult to open or close, contact a qualified window installer for adjustment.

Gaskets and Seals

• ✓Wipe gaskets clean with a damp cloth and mild soap. Rinse and dry.
• ✓Inspect seals annually for cracks, hardening, or gaps - particularly after heavy storms.
• ✕Do not use silicone sprays on gaskets. These cause the rubber to swell and deform over time.
• ✓Damaged or cracked gaskets should be replaced by a qualified installer.

Drainage Channels

• ✓Check drainage slots (Entwaesserungsoffnungen) in the lower frame profile at least twice per year.
• ✓Clear any blockages - leaf debris, dirt, and insect nests are the most common causes.
• ✕Blocked drainage causes water to pool in the frame, accelerating seal deterioration and causing damp ingress.

Step 2 of 2: The Orloffs Protocol

The Orloffs Protocol

Pro Tools

My daily tool list. This is what I carry to every job.

Follow these steps in order. Each one builds on the last. This is the same sequence I use on every Josef Meeth Fensterfabrik installation.

1. 1

   Detail the uPVC frame first

   Before touching the glass, wipe the uPVC frame edges with a damp soft microfibre cloth and mild soapy water. Pay particular attention to the rebate edge where the frame meets the glass - this is where dirt collects in Meeth's multi-chamber profiles.

   This step matters because when the squeegee rubber reaches the frame edge, it picks up whatever is sitting there and drags it across the clean glass as a streak. Clean the frame first, every time, with no exceptions.

2. 2

   Clear the drainage slots

   While you have the damp cloth in hand, check the drainage slots in the bottom frame sill. Run the cloth along the sill channel to clear any debris. This takes ten seconds and is the single most neglected step in window maintenance.

3. 3

   Agitate the glass

   Dip your T-bar applicator fully into the soapy water and apply the solution across the whole glass surface in overlapping strokes. The goal is to dissolve the dirt and release it from the glass - so the squeegee can shave it off cleanly.

   If dirt is not fully dissolved before the squeegee passes over it, grit is dragged across the glass and creates micro-scratches or smears. Never clean in direct sunlight - the soap solution dries onto the glass before you can squeegee it off.

4. 4

   Detail the frame edges before squeegeeing

   Once the glass is agitated, fold a dry corner of your cotton rag and run it along the top edge and both side edges of the window. This removes the pooled soap water sitting on the frame rebate. When the squeegee travels to those edges, it will not pick up dirty residue and drag it back across the glass.

5. 5

   The three squeegee turns

   Side to side: start at the top edge of the window with a dry rubber. Work across the glass in a straight horizontal line, tilting the squeegee so the soap water spills from one side of the channel only. Wipe the rubber dry after each pass. Overlap slightly into the next line down. Repeat to the bottom.

   Top to bottom: the same principle run vertically. Start in the top corner with a dry rubber. Tilt to direct water to the lower side. Wipe the rubber dry after each line. Overlap into the next column across.

   The J tune: this is the continuous professional motion - one unbroken movement from the top of the window to the bottom. Your thumb guides the rotation as you reach the end of a horizontal pass, rotating the squeegee and continuing down. When this motion is in muscle memory, it is the fastest and most consistent technique for any Meeth window size.

6. 6

   Edge detailing

   After squeegeeing, a thin line of water remains along the bottom edge and at both sides. Take a dry cotton rag, fold it to a clean corner, and detail these edges in one smooth pass.

   Get your finger into the edge where the glass meets the gasket. Remove any pooled soap water sitting in that joint. If left to dry, it leaves a white residue mark that shows up clearly when the sun hits the glass at an angle.

   Rotate the rag to a clean, dry section as you move around the window. Replace the rag with a fresh one every few windows.

7. 7

   Hardware check

   While you are at the window, take thirty seconds to check the hinges and locking points. If anything feels stiff, note it. Oil hardware once per year with a light machine oil.

Pro Tips

• ★ Never use a commercial glass spray near a Josef Meeth uPVC frame - most contain ammonia, which permanently degrades the uPVC surface.
• ★ Clean the frame first, every time - dirty frames cause streaks when the squeegee reaches the edge.
• ★ The CLIMATOP XN LIGHT triple-glazed units are slightly flexible - apply consistent even pressure, not heavy pressing at edges.
• ★ Rinse uPVC frames thoroughly after cleaning - soap residue left to dry leaves a dull film.
• ★ Check drainage slots at least twice per year - blocked drainage causes water to pool in the frame and accelerates seal failure.

What NOT To Do

Bundle Kits and Tool Recommendations

Cleaning Frequency

Glass and frames: Minimum 2x per year (Inside and out. Urban environments with traffic pollution: quarterly.). Drainage slots: At least 2x per year (Spring and autumn. Clear blockages before they cause water pooling.). Hardware lubrication: Once per year (Light machine oil on hinges, locking points, and tilt-turn mechanisms.). Gasket and seal inspection: Once per year (Or after heavy storms or extreme temperature events.). uPVC frame condition check: Annually (Look for discolouration, chalking, or surface changes that may indicate product damage.)

Frequently Asked Questions

Field Notes

“Glass and frames: twice per year minimum - quarterly in urban environments with traffic pollution or construction dust. Drainage slots: check and clear at least twice per year - spring and autumn. Hardware lubrication: once per year with a light machine oil. Gasket and seal inspection: once per year, or after heavy storms or extreme temperature events. uPVC frame condition: check annually for discolouration or surface changes that indicate product damage.”

Justin Orloff