Europe Β· Profile System
Technal β Window Cleaning Guide
π«π· France Β· Last reviewed by Justin Orloff
Quick Facts
founded
1960
hq
Toulouse, France
primaryMaterials
Aluminium (powder-coated and anodised)
glazingPartner
In-house
marketTier
Premium
Brand at a Glance
- Founded: 1960
- HQ: Toulouse, France
- Market position: Global aluminium window, door, and facade system supplier - part of Hydro Group
- Frame materials: Aluminium (powder-coated and anodised)
- Glazing: Double and triple glazed. Glazing thickness up to 69mm. Uw from 0.98 W/m2K. Acoustic rating up to 47 dB.
- Key ranges: SOLEAL Next 75 (windows), SOLEAL 65 (sliding), Dualframe 75 Si (residential), Dualslide (sliding windows), GY facade system
- Warranty: Contact Technal or certified installer for warranty terms
- Where they sell: Europe (France, UK, Ireland, Spain, Portugal), Middle East, Latin America, South Africa
- Official care page: technal.com/en-me/homeowners/guides/care-and-maintenance
- Find a certified installer: technal.com/en-me/homeowners/support/contact
Product Range
- SOLEAL Next 75
- SOLEAL 65
- Dualframe 75 Si
- Dualslide
- GY Facade System
Why This System
Technal specifies a maximum water temperature of 25 degrees Celsius for cleaning - unusually specific and lower than most manufacturers allow. Multiple system formats from standard Dualframe casements to SOLEAL 65 sliding panels up to 4.3 metres tall - glass technique is consistent but scale changes everything. Sliding systems use self-lubricating wheels in the leaves - these do not need additional lubricant. Casement and tilt-turn hardware does need annual lubrication. Sliding rail drainage systems accumulate debris that can compromise water removal and ventilation if not cleared regularly. Seals degrade over time affecting insulation and potentially causing leaks - annual inspection is part of Technal's official maintenance schedule.
Step 1 of 2: Manufacturer Recommendations
Official Care Guidance
Source: TECHNAL OFFICIAL CARE & MAINTENANCE
Glass
- Clean glass surfaces with water at a maximum temperature of 25 degrees Celsius and a neutral detergent.
- Use a soft, non-scratching cloth.
- Rinse with clean cold water and dry with a separate clean cloth.
- Do not use abrasive materials or products on the glass.
- More frequent cleaning and rinsing with water helps prevent buildup and long-term damage.
Aluminium Frames
- Clean all frame surfaces every 3 to 4 months with clean water (max 25 degrees Celsius) and a gentle, neutral cleaning product free of abrasives.
- Use a soft, non-scratching cloth.
- Rinse with clean cold water after washing.
- In coastal or urban areas, clean monthly due to more corrosive environmental conditions.
- Aluminium frames do not need to be painted or varnished - the powder coat is the permanent finish.
Hardware
- Apply lubricant to window and door mechanisms (hinges, locks, moving parts) once per year.
- Use a small brush to spread lubricant evenly and remove excess with a clean, dry cloth.
- The wheels in the leaves of sliding and folding doors are self-lubricating - do not apply additional lubricant to these components.
- Check all supporting elements like hinges regularly for signs of damage.
Gaskets and Seals
- Check seals annually for wear and tear.
- Degraded seals affect insulation and can lead to leaks.
- Maintain and check the sealing of joints and gaskets to prevent water infiltration.
- Contact your Technal installer for seal replacement if wear is found.
Sliding System Rails and Drainage
- Vacuum debris from rails of sliding and folding doors regularly.
- Accumulated dust, dirt, and debris between rails compromises proper functioning, water removal, and ventilation.
- Ensure drainage channels remain clear and unblocked.
Step 2 of 2: The Orloffs Protocol
The Orloffs Protocol
This is how I clean Technal 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 Technal systems.
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 Technal installation.
- 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 aluminium 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
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
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 Technal aluminium 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
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
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 Technal 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
Frame wipe and hardware check
On Technal powder-coated aluminium frames: use pH-neutral cleaner only, never abrasive pads or steel wool. Dry immediately after wiping.
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.
Pro Tips
- Water temperature must stay below 25 degrees Celsius - Technal specifies this limit explicitly for all surfaces.
- Clean the frame first, every time. Most streaks come from dirt the squeegee picks up at the frame edge.
- More soap water, not more pressure - never use razor blades or sharp tools on any Technal surface.
- On SOLEAL sliding systems, vacuum the bottom rail at every cleaning session to prevent grit buildup.
- Do not oil the self-lubricating wheels in Technal sliding doors - they are designed to operate without additional lubricant.
What NOT To Do
- Do not use water above 25 degrees Celsius on any surface. Technal specifies this limit explicitly.
- Do not use abrasive cleaners or materials including polishes and steel wool.
- Do not use specialist cleaners designed for other metals (copper, brass, silver, or raw aluminium) - they damage powder-coated surfaces.
- Do not use harsh or aggressive cleaning products. Stick to neutral detergent only.
- Do not direct high-pressure water at frame joints, drainage channels, seals, or hardware.
- Do not apply lubricant to the wheels in the leaves of sliding or folding doors - these are self-lubricating.
- Do not allow debris to accumulate in sliding door rails - it compromises drainage, water removal, and ventilation.
- Do not neglect seal inspection - degraded seals lead to water infiltration and insulation loss.
- Do not clean glass in direct sunlight - the soap water dries before you can squeegee it off.
Bundle Kits and Tool Recommendations
Bundle Kit
Cleaning Frequency
Glass and frames: Every 3-4 months (Technal's own recommendation. Monthly in urban or coastal environments.). Coastal or salt air locations: Monthly (Salt deposits on aluminium frames need to come off before they cause surface damage.). Hardware lubrication: 1x per year (Hinges, locks, and moving parts. Not sliding door wheels - those are self-lubricating.). Seal inspection: 1x per year (Check for wear and tear. Degraded seals affect insulation and cause leaks.). Sliding rail clearing: Every cleaning session (Vacuum debris from rails to maintain proper drainage and ventilation.)
Frequently Asked Questions
Field Notes
βGlass and frames: every 3 to 4 months as Technal recommends, monthly in urban or coastal environments. Water temperature is critical - stay below 25 degrees Celsius on every surface, every time. Sliding system rails: vacuum at every cleaning session to prevent grit buildup and drainage blockage. Hardware: annual lubrication for hinges and locks. Do not oil self-lubricating sliding door wheels. Seal inspection: once per year. Degraded seals compromise insulation and cause leaks.β
Justin Orloff
What's next for you?
The Skill
New to window cleaning?
Start with the core techniques before tackling premium systems.
Start Learning βThe Standard
Upskill your team
Covers every system, product type, and tricky scenario.
View The Standard βManufacturer
Partner with Orloffs
Are you Technal or a similar manufacturer? Let's create official cleaning guidance together.
Get in Touch β

