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Europe ยท Window Manufacturer

Sky-Frame

๐Ÿ‡จ๐Ÿ‡ญ Switzerland ยท Last reviewed by Justin Orloff

Sky-Frame window product

Quick Facts

founded

1999

hq

Frauenfeld, Switzerland

primaryMaterials

Frameless - aluminium concealed sill track

glazingPartner

Standard, Low-E, solar protection, TSG-HST safety glass

marketTier

Luxury

Brand at a Glance

  • Founded: 1999
  • HQ: Frauenfeld, Switzerland
  • Market position: World's leading frameless sliding glass system - luxury architectural tier
  • Engineering: Swiss precision, floor-to-ceiling frameless panels up to 4 metres high
  • Frame materials: Frameless - aluminium concealed sill track system
  • Glass options: Standard, Low-E coated, solar protection, TSG-HST safety glass
  • Key feature: Concealed sill track with integrated drainage - glass meets floor, ceiling, and adjacent panels
  • Panel size: Individual panels up to 90 square feet
  • Training partnership: Orloffs Window Cleaning Training is an official Sky-Frame partner
  • Official care manual: sky-frame.com/en/qr/manual (Section 6: Cleaning and Care)
  • Official website: sky-frame.com

Product Range

  • Sky-Frame Classic
  • Sky-Frame 3
  • Sky-Frame Arc

Why This System

Scale magnifies everything - panels up to 4 m high and 90 sq ft; hesitation or uneven overlap shows across metres of uninterrupted glass. Specialised coatings (Low-E, solar) can be permanently damaged by abrasives, harsh chemicals, or grit trapped in cloths. Frameless edges - glass meets floor, ceiling, and adjacent panels with no frame to absorb mistakes at the boundary. Concealed track and drainage system needs maintenance alongside the glass - not optional. Road salt is explicitly flagged by Sky-Frame as damaging to the sliding system.

Step 1 of 2: Manufacturer Recommendations

Official Care Guidance

Source: SKY-FRAME USER MANUAL, SECTION 6 - CLEANING AND CARE

Sky-Frame's 7-Step Cleaning Process

  • Clean panes of glass with a soft cloth and a normal commercial glass cleaner.
  • Remove soiling from base profile with a vacuum cleaner.
  • Clean base profile with a damp cloth and a liquid cleaning agent.
  • Check the gutter for soiling and clean if necessary.
  • Ensure that water can flow away in the gutter.
  • Remove all tools, materials, and other equipment from the working area.
  • Clean the working area and remove any liquids, consumables, or similar materials.

Gaskets and Seals

  • Seals are treated with silicone from the factory to prevent freezing.
  • When this protection deteriorates: spray silicone spray onto a cloth outdoors first (never directly onto the seal), then apply to the seals using the cloth.
  • Inspect seals at every cleaning for cracking, hardening, or gaps - functional seals are essential for thermal and acoustic performance.

Road Salt

  • Road salt can damage Sky-Frame sliding windows.
  • If the installation is near a road, driveway, or path that receives salt in winter, avoid salt contact with the system and clean any salt residue promptly if it reaches the glass or tracks.

What Not To Do

  • Never use metal blades or glass scrapers - Sky-Frame explicitly states these can cause severe damage to TSG-HST glass. No exceptions.
  • No abrasive or scouring material on any surface - including products labelled 'soft scrub'.
  • Never use cleaning agents containing solvent or scouring material.
  • No alkalis (lyes) - these attack both the glass surface and surrounding materials.
  • High-pressure washing is not recommended - the force can damage seals, the drainage system, and push water into weather-sealed areas.
  • Never clean with dirty cloths - grains of dirt trapped in fabric scratch the glass. Replace immediately if a cloth picks up grit during cleaning.
  • Never clean in direct sunlight - solution evaporates on sun-heated glass before it can be squeegeed, leaving streaks that are highly visible across large panels.
  • After any nearby construction work - clean immediately. Cement dust, plaster, and paint splashes bond to coated glass rapidly.

Step 2 of 2: The Orloffs Protocol

The Orloffs Protocol

This is how I clean Sky-Frame windows. The tools and technique below come from 25 years of daily professional work on the glass. Every step has been tested on real installations and adapted specifically for Sky-Frame systems.

Pro Tools

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

1Microfiber T-bar applicator - kept clean throughout, rinsed regularly to prevent grit accumulation
2Professional squeegee with fresh rubber blade - larger channel (35 cm or more) for large panel sections
3Extension pole for panels above arm height - squeegee at 45 degrees to the glass, not flat
4Bucket with at least 10 litres of water and enough soap for cleaning power without excess foam
5100% cotton towelling rags for edge detailing
6Vacuum cleaner for sill track and base profile
7Silicone spray applied to a cloth outdoors for seal maintenance (never sprayed directly)

Follow these steps in order. Each one builds on the last. This is the same sequence I use on every Sky-Frame installation.

  1. 1

    Preparation - before any water touches the glass

    Fill the bucket with at least 10 litres of water. Add soap for cleaning power - enough to cut through environmental deposits, not so much you are fighting foam. On Sky-Frame's large surface area you will use more solution than you expect.

    Before touching the glass, brush down the surface to remove loose dust, spiderwebs, and debris. Any grit left on the glass during the wash phase risks scratching the coating during agitation.

    Vacuum the sill track and base profile before washing the glass. Debris that gets wet during glass cleaning becomes paste in the drainage channels - remove it dry first.

    Cover anything below the panels that cannot be moved. Sky-Frame panels are large - water management at this scale requires forward planning.

  2. 2

    Agitation

    Dip the microfiber T-bar completely into the soap water, both sides. Remove excess water with your hand so it does not drip. Apply the solution across the entire glass surface with overlapping passes.

    The goal is to fully dissolve and release every deposit from the glass surface. Anything not released during agitation gets transported across the glass by the squeegee as a smear. On Sky-Frame's large panels, that smear covers metres.

    For stubborn spots - insect marks, salt residue, environmental deposits - re-apply soap water and allow it to soak for a full minute before agitating again. Use more soap water, not more pressure. Sky-Frame's coatings cannot tolerate abrasive force.

    For panels taller than arm reach: attach the T-bar to an extension pole. Work in sections - top first, then middle, then bottom - keeping each section wet until you squeegee it. If glass is warm and solution evaporates quickly, run applicator and squeegee in parallel: applicator agitating, squeegee following 5โ€“10 cm behind.

    Rinse the T-bar cover regularly during the job. A dirty applicator on Sky-Frame's coated glass causes the microscopic scratches that Sky-Frame's manual specifically warns about.

  3. 3

    Detail the frame edge before squeegeeing

    On Sky-Frame, the edges where glass meets floor, ceiling, and adjacent panels all need detailing before the squeegee touches the glass.

    Use your 100% cotton towelling rag, finger pressed into the fabric, to work into every junction and remove pooled soap water. This prevents drips running down onto already-cleaned areas during squeegeeing and keeps soap water out of the sill track drainage.

    On Sky-Frame specifically: the bottom edge where glass meets the sill track is the most critical detailing point. Water that runs into the track during squeegeeing leaves residue in the drainage channels over time. Clean it out before it runs.

  4. 4

    The squeegee

    Tilt the squeegee at a slight angle so soap water spills from one side of the channel only - not both. If the rubber is jumping, hopping, or squeaking, either the rubber is not lubricated enough with solution or the glass has warmed.

    Cutting in: start with the rubber blade making first contact on a dry edge of the glass. Dry rubber on a dry edge, or slice into the soap water at an angle to create a dry starting line.

    Side to side: horizontal passes across the panel. Works well on wide sections. Top to bottom: vertical passes down the panel. Works well on tall narrow sections. For full Sky-Frame panels: top-to-bottom with extension pole for the upper section above arm height, then switch to side-to-side from arm height down. Keep the pole at 45 degrees - flat angle fails to remove the solution correctly.

    The J tune: one smooth unbroken motion top to bottom, wrist rotating at each end to reverse without lifting the rubber. The most efficient method on Sky-Frame's large panels - but it requires training before you apply it to premium glass.

    Wipe the rubber dry after every pass. On a Sky-Frame panel, residue on the blade creates a line across metres of glass.

    Overlap as little as possible - squeegee rubber roughly three-quarters in the soaped area and one-quarter out. Bumping: if soap water accumulates in the channel, bump the rubber against the glass at the lowest point of the panel to release it.

  5. 5

    Final edge detailing

    After squeegeeing, there is always a residual line of water along the bottom edge and at the panel sides. Take a dry cotton rag, fold to a clean corner, and detail these edges in one smooth pass.

    On Sky-Frame: the bottom edge where glass meets the sill track requires the most careful attention. Water left here runs into the track drainage and leaves residue that affects both the track operation and the next clean.

    Where glass meets adjacent panels: detail the vertical edges carefully. There is no frame to catch anything that runs.

    Rotate the rag to a clean section after every pass. If the rag picks up grit at any point, replace it immediately.

  6. 6

    Track and drainage maintenance

    After the glass and edges are complete, address the track system.

    Wipe the track rails with a damp cloth to remove any soap residue. Check that all drainage openings in the sill channel are clear and unobstructed. Water must be able to flow freely - a blocked channel leads to accumulation that affects sliding operation and weather seal performance.

    If debris remains in the track after wiping, vacuum again. The track should be completely clear and clean before you finish.

Watch the Window Cleaning Manifesto hereSee these techniques in action. Free, 5 minutes, lifetime access.

Pro Tips

  • Never use metal blades or scrapers - Sky-Frame's manual is explicit that these can cause severe damage to TSG-HST glass. No exceptions.
  • Never clean in direct sunlight - solution flashes off heated glass and leaves streaks visible across metres.
  • Never clean with a dirty cloth - grit trapped in fabric scratches the coating. Replace immediately if a cloth picks up debris.
  • Vacuum the track before washing the glass - wet debris becomes paste in the drainage channels.
  • Use more soap water, not more pressure - the coatings cannot tolerate abrasive force.
  • Apply silicone spray to a cloth outdoors first, never directly onto the seal.
  • Clean immediately after nearby construction - cement, plaster, and paint bond to coated glass rapidly.

What NOT To Do

  • Never use metal blades or glass scrapers - Sky-Frame explicitly warns these cause severe damage to TSG-HST glass.
  • No abrasive or scouring material on any surface - including products labelled 'soft scrub'.
  • Never use cleaning agents containing solvent or scouring material.
  • No alkalis (lyes) - they attack both the glass and surrounding materials.
  • No high-pressure washing - the force damages seals and the drainage system.
  • Never clean with dirty cloths - grit trapped in fabric scratches the glass.
  • Never clean in direct sunlight - solution evaporates and leaves visible streaks.
  • Never spray silicone directly onto seals - apply to a cloth outdoors first.
  • Do not let road salt sit on the system - clean promptly on contact.

Bundle Kits and Tool Recommendations

Bundle Kit

Orloffs Squeegee Pro Pack flat lay
Pro KitThe full professional setup. Brass squeegees, T-bar with applicator cover, tool belt, rags, soap, and bucket. Everything from the daily tool list in one box.Shop now โ†’
Orloffs Squeegee Pro Pack bundled

Tool Recommendations

Microfiber T-bar applicator (kept clean, rinsed regularly)

View on Amazon [coming soon]

Professional squeegee with fresh rubber blade (35 cm+ channel for large panels)

View on Amazon [coming soon]

Extension pole for panels above arm height

View on Amazon [coming soon]

Cleaning Frequency

Glass: 2ร— per year minimum (Spring and autumn.). Urban / coastal / high-pollution: 4ร— per year. After nearby construction: Immediately (Do not allow cement dust, plaster, or paint residue to bond to the glass or coatings.). Track and drainage: Every clean (Clear at every glass cleaning.). Seal inspection: Every clean (Apply silicone spray via cloth when factory protection shows signs of deterioration.). Road salt contact: Promptly on contact (Do not allow salt residue to sit on the glass or track system.)

Frequently Asked Questions

How often should I clean Sky-Frame windows?
For Sky-Frame windows, Glass: 2ร— per year minimum (Spring and autumn.). Urban / coastal / high-pollution: 4ร— per year. After nearby construction: Immediately (Do not allow cement dust, plaster, or paint residue to bond to the glass or coatings.). Track and drainage: Every clean (Clear at every glass cleaning.). Seal inspection: Every clean (Apply silicone spray via cloth when factory protection shows signs of deterioration.). Road salt contact: Promptly on contact (Do not allow salt residue to sit on the glass or track system.). Coastal or urban locations may need more frequent cleaning.
What tools do I need for Sky-Frame windows?
Professional cleaning of Sky-Frame windows requires my daily tool list of: Microfiber T-bar applicator - kept clean throughout, rinsed regularly to prevent grit accumulation, Professional squeegee with fresh rubber blade - larger channel (35 cm or more) for large panel sections, Extension pole for panels above arm height - squeegee at 45 degrees to the glass, not flat, Bucket with at least 10 litres of water and enough soap for cleaning power without excess foam, 100% cotton towelling rags for edge detailing, Vacuum cleaner for sill track and base profile, Silicone spray applied to a cloth outdoors for seal maintenance (never sprayed directly).
What should I avoid on Sky-Frame windows?
Never use metal blades or glass scrapers - Sky-Frame explicitly warns these cause severe damage to TSG-HST glass.
Does Sky-Frame publish an official cleaning guide?
Yes, Sky-Frame publishes official care guidance. Source: SKY-FRAME USER MANUAL, SECTION 6 - CLEANING AND CARE (sky-frame.com/en/qr/manual)
Can I use a water-fed pole on Sky-Frame windows?
Yes, purified water via a water-fed pole is one of the safest methods for Sky-Frame glass. Ensure TDS is at or near zero before use and avoid directing high-pressure water at seals or gaskets.

Field Notes

โ€œGlass: minimum twice per year - four times in urban, coastal, or high-pollution locations. After nearby construction: clean immediately to prevent cement dust, plaster, or paint bonding to coated glass. Track and drainage: clear at every glass cleaning. Seal inspection: at every cleaning - apply silicone spray via cloth when factory protection shows signs of deterioration. Road salt contact: clean promptly on contact - do not allow salt residue to sit on glass or tracks.โ€

Justin Orloff