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Europe ยท Holding Company

Dovista โ€” Window Cleaning Guide

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

Dovista product

Brand at a Glance

  • Founded: 2012 (as Dovista group)
  • HQ: Horsens, Denmark
  • Materials: Timber, uPVC, aluminium
  • Market position: Leading Scandinavian window and door group โ€” 13 European brands
  • Key brands: VELFAC, RATIONEL, Viking Window, Pihla, Tiivi and others
  • Regions served: Scandinavia, Northern Europe, UK, Poland
  • Official website: dovista.com

Product Range

  • Timber windows
  • uPVC windows
  • Aluminium-clad timber
  • Full aluminium systems

Why This System

Umbrella group: 13 brands each with their own product range and care instructions โ€” always identify the specific brand before cleaning. Aluminium-clad timber is the premium Scandinavian norm: exterior aluminium cladding with a timber interior. Both surfaces require different approaches. Nordic climate engineering: drainage, seals, and hardware are designed for freeze-thaw cycles โ€” track and seal maintenance matters year-round. Group certification: most Dovista brands hold Passive House and Nordic Swan eco-label certifications โ€” coatings are often high-performance and chemical-sensitive.

Dovista brands appear across Scandinavia and Northern Europe in every building type. Identify the specific brand and surface specification before you start โ€” the group spans timber, clad, uPVC, and aluminium, each with different cleaning rules. The glass is always the priority; the frame finish tells you which products are safe.

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 Dovista 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 Dovista 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 Dovista 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 Dovista 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 Dovista 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 Dovista 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

  • Always identify the specific Dovista brand before starting โ€” the group spans 13 brands with different surface specs.
  • Never use alkaline or solvent-based cleaners on aluminium cladding or painted timber interiors.
  • In Nordic climates, winter salt on exterior glass needs full soak time โ€” do not scrub dry deposits.
  • Check drainage weep holes every visit โ€” freeze-thaw cycles compress debris into slots.

What NOT To Do

  • Do not use alkaline or acid cleaners on aluminium-clad exteriors.
  • Do not allow water to stand on timber interior surfaces.
  • Do not use abrasive pads on any surface.
  • Do not force tilt-turn hardware โ€” if a sash sticks, diagnose the hardware rather than forcing the frame.

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

Glass: 2-4x per year (Nordic urban environments accumulate road salt and sand โ€” spring and autumn as minimum.). Track and drainage: Every clean. After winter: April clean recommended (Remove salt residue from glass, cladding, and tracks before it bonds.)

Frequently Asked Questions

How often should I clean Dovista windows?
For Dovista windows, Glass: 2-4x per year (Nordic urban environments accumulate road salt and sand โ€” spring and autumn as minimum.). Track and drainage: Every clean. After winter: April clean recommended (Remove salt residue from glass, cladding, and tracks before it bonds.). Coastal or urban locations may need more frequent cleaning.
What tools do I need for Dovista windows?
Professional cleaning of Dovista 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 Dovista windows?
Do not use alkaline or acid cleaners on aluminium-clad exteriors.
Does Dovista publish an official cleaning guide?
Dovista 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 Dovista windows?
Yes, purified water via a water-fed pole is one of the safest methods for Dovista glass. Ensure TDS is at or near zero before use and avoid directing high-pressure water at seals or gaskets.

Field Notes

โ€œDovista group windows appear across Scandinavia housing stock โ€” from Danish low-energy houses to Finnish apartment towers. The aluminium-clad timber specification is dominant in the premium segment. On older installations the timber interior paint can be chalking or peeling โ€” document any pre-existing surface damage before you clean and flag it to the property owner.โ€

Justin Orloff