Europe · Profile System
Strugal
🇪🇸 Spain · Last reviewed by Justin Orloff
Quick Facts
founded
1976
hq
Salamanca, Spain
primaryMaterials
Aluminium with polyamide thermal break
glazingPartner
Glazing by fabricator specification
marketTier
Premium
Brand at a Glance
- Country: Spain
- Market position: Premium Spanish aluminium window and facade system manufacturer
- Primary materials: Extruded aluminium with polyamide thermal break
- Product types: Casement windows, sliding doors, lift-and-slide systems, curtain walling, facades
- Finish options: Powder coat (RAL colours), anodised, lacquered
- Standards: CE marked, Spanish UNE standards, European aluminium system standards
- Distribution: Spain and southern European markets
- End use: Residential, commercial, architectural
- Solar performance: Systems designed for high solar-gain management in southern European climate
- Website: strugal.com
Product Range
- Residential casement and sliding windows
- Lift-and-slide terrace doors
- Curtain walling and facades
- Solar shading integration
Why This System
Spanish residential windows are predominantly outward-opening casements rather than tilt-and-turn - the outer face access for cleaning is completely different and requires the window to be in the open position. High UV levels across Spain accelerate powder coat chalking and anodise surface change faster than northern European equivalents - cleaning frequency and product selection must account for faster deposit bonding. Coastal Spanish locations have significant salt deposition that is corrosive to aluminium if left to accumulate - regular salt neutralisation cleaning is a functional requirement, not a cosmetic one. External persianas (shutters) on Spanish windows create the same debris junction cleaning requirement as German roller shutters - the shutter guide rail-to-frame junction accumulates organic matter and moisture. Spanish apartment building lift-and-slide terrace doors are among the most used windows in the building and are operated in extreme temperature conditions - hardware maintenance is critical.
Step 1 of 2: Manufacturer Recommendations
Official Care Guidance
Source: ORLOFFS PROFESSIONAL GUIDANCE - BASED ON STRUGAL PUBLISHED INFORMATION AND 25 YEARS FIELD EXPERIENCE
Glass
- Clean south and west-facing Spanish glass in the morning or late afternoon - solution evaporates too fast in midday direct sun to achieve a clean result.
- pH-neutral glass cleaner in warm water. Microfibre T-bar and professional squeegee.
- On outward casements, confirm the friction stay holds the sash open before accessing from outside.
- Edge wipe in rebate. On outward casements the rebate is accessible from the sash face when open.
Frames
- Powder-coated aluminium: pH-neutral cleaner, soft cloth, immediate rinse, dry.
- Anodised sections: pH-neutral only, immediate rinse. Never allow alkaline products to dwell.
- Coastal installations: rinse frames with fresh water monthly in addition to the main clean schedule.
- Clear persiana guide rail-to-frame junctions at every clean.
Hardware
- Use PTFE-based lubricant rather than oil on hardware in high-temperature Spanish locations. Better thermal stability.
- Lubricate lift-and-slide running gear every 6 months - spring and autumn. High summer temperatures thin oil lubricants.
- Check friction stay condition on all outward casements at every clean. A failing stay on an upper floor is a safety issue.
Step 2 of 2: The Orloffs Protocol
The Orloffs Protocol
This is how I clean Strugal 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 Strugal 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 Strugal installation.
- 1
Timing and elevation check
Check sun position before starting. South and west elevations in Spanish summer: clean before 10am or after 5pm.
Identify coastal locations - these need salt rinse protocol additions.
Check all persiana guide rail junctions before wetting.
- 2
Persiana junction clearance
Clear debris from persiana guide rail-to-frame junctions with a soft brush.
This is done before any wetting - loose debris moves freely, wet debris is harder to clear and scratches the frame.
On fully open persianas, check the shutter bottom bar contact with the outer glass face.
- 3
Glass cleaning
Apply solution with T-bar in overlapping passes.
On outward casements, clean the outer face with the sash held open on the friction stay.
Squeegee top to bottom. Edge wipe before final pull.
- 4
Frame cleaning
pH-neutral cleaner on soft cloth, straight strokes, immediate rinse.
On coastal installations, use a fresh water rinse after the frame cleaner to neutralise any salt in the frame surface.
Dry with soft cloth.
- 5
Hardware service
Apply PTFE spray to all mechanism points.
Check friction stay pivot screws on every outward casement.
Lubricate lift-and-slide running gear with PTFE spray at the roller axle access points.
- 6
Coastal rinse protocol (monthly between main cleans)
On coastal installations, a monthly rinse of frames with fresh water prevents salt accumulation between main cleaning visits.
Rinse from top to bottom. No cleaning products needed for the monthly rinse - plain water to displace salt before it concentrates.
Pay attention to persiana guide rail junctions and any sheltered areas where salt would not be washed by rain.
Pro Tips
- In Spanish coastal locations, the monthly fresh water rinse protocol is more important than the main cleaning technique. Salt accumulation between quarterly cleans, if not rinsed, will reach corrosive concentration levels.
- Outward casement windows on upper floors of Spanish apartment buildings are the most access-challenging windows in any residential portfolio. Never attempt to clean the outer face of an upper-floor outward casement without confirming the stay holds the sash securely first.
- PTFE spray lubricant maintains its viscosity from Spanish winter cold to summer heat much better than standard machine oil. On a Spanish installation that uses standard oil lubricant, the lubrication is effectively gone by July every year. Switch to PTFE.
- Powder coat chalking on south-facing Spanish aluminium is an early sign of coating degradation. It appears as a white powder that comes off on a cloth wiped across the frame. Regular cleaning delays chalking by removing the surface deposits that catalyse it. Once established, chalking needs professional coating treatment.
- Lift-and-slide doors on Spanish villas and apartments are often the primary summer living access point, used dozens of times per day in summer. At this cycle rate, running gear lubrication every 6 months is a minimum, not a conservative estimate.
- Persiana guide rails on Spanish windows are aluminium or PVC depending on specification. Aluminium rails are maintained with the same pH-neutral protocol as the window frame. PVC rails are maintained with pH-neutral PVC protocol. Do not use aluminium cleaner on PVC guide rails.
- Spanish summer heat makes glass surface temperature high enough that cleaning solution in direct sun can crystallise on the glass before squeegeeing. Work fast in direct sun or wait for shade - two minutes between application and squeegee in direct midday Spanish sun is too long.
What NOT To Do
- Do not clean south or west-facing Spanish glass in direct midday summer sun.
- Do not use alkaline products on powder-coated or anodised Strugal aluminium.
- Do not neglect the monthly fresh water rinse on coastal installations - salt concentration between quarterly cleans is a corrosion risk.
- Do not use oil-based lubricant on lift-and-slide running gear in high-temperature Spanish locations - it thins too much in summer heat.
- Do not clean the outer face of an upper-floor outward casement without confirming the friction stay is holding the sash safely.
Bundle Kits and Tool Recommendations
Bundle Kit
Tool Recommendations
pH-neutral aluminium frame cleaner
View on Amazon [coming soon]PTFE spray lubricant
View on Amazon [coming soon]Microfibre T-bar applicator
View on Amazon [coming soon]Cleaning Frequency
Glass: 3 to 4x per year (Southern Spanish elevations in high UV: quarterly. Coastal locations: monthly for salt rinse plus quarterly main clean.). Frames: Same visit as glass (Coastal salt rinse: monthly with plain water between main cleans.). Hardware lubrication: Twice per year (Spring and autumn. PTFE lubricant recommended over oil for Spanish temperature range.). Persiana rail junction clearance: Every clean (The most common source of frame corrosion on maintained Spanish aluminium windows.)
Frequently Asked Questions
Field Notes
“Strugal installations represent a large proportion of the Spanish premium aluminium residential market. Coastal villa installations in particular require the salt rinse protocol that most window cleaning contracts do not include. The outward casement access requirement on upper-floor Spanish windows is the primary safety consideration in this market. Any window cleaning operative working in Spain needs to have this embedded in their protocol before starting. PTFE lubricant specification for Spanish installations is a practical choice, not a luxury one. The temperature range from Spanish winter to summer exhausts oil lubricants faster than the annual service interval can compensate.”
Justin Orloff
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