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Europe ยท Window Manufacturer

VELFAC โ€” Window Cleaning Guide

๐Ÿ‡ฉ๐Ÿ‡ฐ Denmark ยท Last reviewed by Justin Orloff

Quick Facts

Founded

Established Danish manufacturer

HQ

Horsens, Denmark

Materials

Timber-aluminium composite

Specialty

Slim sightlines and composite frame construction

Market

UK and Scandinavia (Dovista/VKR Group)

Brand at a Glance

  • Part of Dovista/VKR Group
  • Premium timber-aluminium with distinctive slim sightlines
  • Widely specified in UK architecture and Scandinavian residential

Product Range

  • Timber-aluminium composite windows (casement and tilt-and-turn)
  • VELFAC 200 and related composite systems
  • Exterior doors

Why This System

VELFAC windows are specified by architects for their slim aluminium outer profiles and the warmth of the timber interior. The composite construction means two different materials meet at every frame reveal - the aluminium outer is robust and weather-resistant, while the timber inner requires the same careful treatment as any Nordic timber product.

VELFAC is one of the most commonly encountered premium timber-alu systems in the UK and Scandinavia. Orloffs clean them regularly - the approach is consistent: pure water on the aluminium outer, minimal moisture on the timber inner, and careful attention to the junction between the two materials where condensation and debris can accumulate.

Step 1 of 2: Manufacturer Recommendations

Official Care Guidance

No official guide published. The steps below are based on Justin Orloff's 25 years hands-on experience with this system.

Step 2 of 2: The Orloffs Protocol

The Orloffs Protocol

This is how I clean VELFAC 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 VELFAC systems.

Pro Tools

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

1Microfiber T-bar applicator, kept clean and rinsed regularly to prevent grit
2Professional squeegee with a fresh rubber blade
3Extension pole for glass above arm height
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 for sill tracks and base profiles

Follow these steps in order. Each one builds on the last. This is the same sequence I use on every VELFAC 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.

    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 during agitation.

    Check the composite frame condition before you start. Confirm which cleaning product is safe for that surface before opening any bottle.

    Cover anything below the windows that cannot be moved.

  2. 2

    Agitation -- apply and work the solution

    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.

    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.

    For panels above 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.

    Rinse the T-bar cover regularly during the job. A dirty applicator causes microscopic scratches that accumulate over time.

  3. 3

    Detail the frame edge before squeegeeing

    Use your 100% cotton towelling rag, finger pressed into the fabric, to work into every junction and remove pooled soap water before the squeegee pass.

    This prevents drips running down onto already-cleaned areas during squeegeeing and keeps soap water out of drainage channels.

    On Velfac composite frames, pay particular attention to the bottom edge where glass meets the frame sill -- water pooled here runs into drainage openings and leaves residue over time.

  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 or squeaking, either the rubber is not lubricated enough or the glass surface has warmed.

    Cutting in: start with the rubber blade making first contact on a dry edge of the glass.

    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.

    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 larger panels -- but it requires training before applying it to premium glass.

    Wipe the rubber dry after every pass. Overlap each stroke by 2-3 cm.

  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 Velfac frames, the bottom edge where glass meets the sill requires the most careful attention. Water left here runs into drainage and leaves residue that affects the next clean.

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

  6. 6

    Frame wipe and hardware check

    On Velfac frames, apply the appropriate product for each surface: pH-neutral for aluminium and glass, solvent-free for uPVC, barely damp cloth for timber. Never cross-contaminate products between surfaces.

    Check that all drainage openings are clear and unobstructed. Water must be able to flow freely -- a blocked channel leads to accumulation that affects seal performance over time.

    Operate every opening window through its full range. Stiff handles or resistance at locking points indicate hardware that needs lubrication. Flag it to the owner rather than forcing it.

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

Pro Tips

  • VELFAC slim profiles mean less squeegee contact area at the edges - take extra care on the fan stroke
  • The timber interior on VELFAC windows is often lacquered - even small water marks show. Keep it dry
  • In Scandinavian conditions, check the drainage channels in the aluminium sill - pollen and debris block these in spring

What NOT To Do

  • Do not use abrasive products on the slim aluminium outer profiles
  • Do not allow cleaning solution to contact the timber interior
  • Do not use solvent-based cleaners on any component

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

Cleaning Frequency

Twice yearly minimum. UK sites in urban or coastal locations may benefit from three or four visits per year.

Frequently Asked Questions

How often should I clean VELFAC windows?
For VELFAC windows, Twice yearly minimum. UK sites in urban or coastal locations may benefit from three or four visits per year.. Coastal or urban locations may need more frequent cleaning.
What tools do I need for VELFAC windows?
Professional cleaning of VELFAC windows requires my daily tool list of: Microfiber T-bar applicator, kept clean and rinsed regularly to prevent grit, Professional squeegee with a fresh rubber blade, Extension pole for glass above arm height, 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 for sill tracks and base profiles.
What should I avoid on VELFAC windows?
Do not use abrasive products on the slim aluminium outer profiles
Does VELFAC publish an official cleaning guide?
VELFAC has not published an official cleaning guide. The protocol on this page is based on Justin Orloff's 25 years hands-on experience.
Can I use a water-fed pole on VELFAC windows?
Yes, purified water via a water-fed pole is one of the safest methods for VELFAC glass. Ensure TDS is at or near zero before use and avoid directing high-pressure water at seals or gaskets.

Field Notes

โ€œVELFAC windows appear frequently in UK new-build developments from the 2000s onward, particularly in housing designed to Nordic standards. In the UK, hard water areas mean mineral deposits build up on the glass faster than in Scandinavia. On London and southeast UK sites, incorporate a limescale treatment into the annual clean.โ€

Justin Orloff