Is casement the same as practicable?

Yes, they're synonymous in Spain. 'Practicable' is the technical term, 'casement' the commercial one. Both refer to an inward swing opening.

What's the difference vs tilt-and-turn?

Casement only has one mode: full inward opening. Tilt-and-turn adds the tilt mode (upper micro-ventilation). Tilt-and-turn costs €30-50/m² more.

Does it open outwards?

Not by default. There is an 'outward casement' (projecting tilt-and-turn) version common where interior space is limited, but it needs specific hardware.

How many locking points does it have?

Sashes up to 1.2 m: 3 points. Larger sashes: 4-5 points. Anti-burglary RC2 version: 5 points with tapered bolts.

Casement Windows | 180° Opening

Name: PVC and Aluminium Casement Windows
Brand: VentanaCosta

Why casement still tops the list

6 reasons to choose casement over tilt-and-turn

Casement isn't "a lesser window" than tilt-and-turn — it's another tool for other uses. In industrial kitchens, laundries, offices and owner communities, simple full opening wins on maintenance, price and efficiency.

🌬️

Full 90° or 180° opening

Unlike tilt-and-turn (which opens 90° maximum), casement windows with a special restraining arm reach 180°. The sash sits flush against the interior wall, allowing passage or exterior cleaning even with no balcony.

🚫

No intermediate "tilt" position

Some clients see this as an advantage: a mechanism that only opens or closes, with no intermediate catch to fail. Children can't leave the window ajar. More predictable for schools, nurseries or care homes.

⚙️

Simpler mechanics = more reliable

3-point hardware vs 7-12 points on tilt-and-turn. Fewer moving parts = fewer faults long-term. In aggressive environments (industrial kitchen, salty coast) casement takes double the cycles.

💨

Instant maximum ventilation

When fully opened, the air flow is 100% of the opening. A tilt-and-turn in the intermediate position gives only 8-12%. Ideal for kitchens with fumes, bathrooms without an extractor or rooms you need to air quickly.

🧽

Easy cleaning of both faces

Opening to 180° lets you clean the outside of the glass from inside. On high floors or without a balcony it's the only safe way to clean the outside without hiring a window cleaner.

📐

Large sashes up to 1.2 m

Casement supports wider sashes than tilt-and-turn (up to 1.2 m vs typical 0.9 m). This reduces the number of sashes and intermediate mullions, leaving more glazed surface.

Casement mechanics

How the casement opening works: 3 key components

The casement (also called "practicable" in technical language) is the oldest carpentry opening still in use. Its mechanics rely on 3 exact components:

Side hinges (2 or 3 per sash) in stainless steel or brass. They carry the full weight of the sash (glass + profile + hardware). Hidden hinges on the high-end (invisible from outside) or visible on the mid-range.
Perimeter multipoint lock (3 to 5 points). When you turn the handle, a rod simultaneously moves 3-5 bolts that engage keepers in the frame. Uniform locking = even gasket compression = real tightness.
Restraining arm or compass (optional). Limits the opening to 90°, 135° or 180°. On a top floor/roof with wind it's essential so the sash doesn't slam against the wall. Models with a brake allow an adjustable intermediate position.

For full 180° opening (flat against the interior wall) we use the Maco Multi-Matic arm or Roto NX 180 — both certified for 20,000 cycles.

Mechanical differences Casement vs Tilt-and-Turn

Opening modes: 1 (casement) · 2 (tilt)
Maximum opening: 90°-180° · 90° (tilt)
Locking points: 3-5 points · 7-12 points
Hardware components: 14 parts · 32-45 parts
Maximum sash width: 1.2 m · 0.9-1.0 m typical
Relative cost €/m²: Base · +€30-50/m²
Hardware service life: 25,000 cycles · 15,000 cycles

Real applications

Where casement makes sense

It isn't a window for "any opening". Each typology has its ideal use. These are the 6 contexts where we recommend casement over tilt-and-turn or sliding in Costa Blanca and Murcia projects.

🍳

Kitchens (residential and professional)

Massive ventilation during cooking, easy cleaning when grease builds up. Inward sash doesn't get in the way at the worktop.

🧺

Laundries and utility rooms

High humidity needs quick total ventilation. Simple mechanics handle vapours and chemical agents (bleach).

🏢

Offices and retail premises

Low unit cost, robustness for intensive use, easy for hired window cleaners.

🏘️

Owner communities

Mass refurbishment (60-200 windows) with a tight budget. Fewer failure points for future maintenance.

🏥

Care homes and healthcare centres

Opening only controllable with a key (limited version). No intermediate position to confuse older users.

🛏️

Secondary bedrooms and storerooms

Occasional use doesn't justify the tilt-and-turn premium. Efficient solution without sacrificing quality.

Casement vs tilt-and-turn

When to choose casement and when tilt-and-turn

The choice isn't about "quality" but about use. This table summarises the objective criteria we apply when recommending one over the other during the technical visit.

Criterion	Casement (practicable)	Tilt-and-turn
Price €/m² installed	320-480 € (PVC) · 480-680 € (alu)	370-540 € (PVC) · 540-760 € (alu)
Full opening	90°-180° with arm	90° maximum
Intermediate ventilation	No (only open or closed)	Yes (top tilt 8-12 cm)
Maximum sash width	1.2 m	0.9-1.0 m typical
Hardware components	14 parts	32-45 parts
Maintenance	Very low	Annual greasing + adjustment
Interior cleaning of exterior	Yes (180°)	Partial (90°)
Ideal use	Kitchen, laundry, community, office	Living room, main bedroom, rental home

Rule of thumb: if the client will always open the window fully (airing 5-10 minutes) → casement. If they'll use continuous micro-ventilation (bedroom, heated living room) → tilt-and-turn.

Official systems

The 5 casement systems we manufacture

We work with official-manufacturer European profiles with CE marking and a 10-year warranty. Each tier matches a different client profile and budget.

PVC · Entry

Kömmerling EuroFutur Classic 70

German PVC profile with 5 chambers + 1.5 mm galvanised steel reinforcement. The standard choice for residential. Uf 1.3 W/m²K.

· Max sash 1.2 m × 1.5 m
· Roto NT 3-5 point hardware
· White / foiled RAL colour
· Indicative price 320-420 €/m²

PVC · Comfort

Kömmerling 76 AD

76 mm depth version, 6 chambers, additional central gasket. Better thermal and acoustic insulation than the 70. Main residence.

· Max sash 1.2 m × 1.6 m
· Uf 1.0 W/m²K
· Black EPDM central gasket
· Indicative price 380-480 €/m²

PVC · Premium

Kömmerling 88 / Salamander BluEvolution 92

88-92 mm profile for Passivhaus. Triple gasket + suitable for triple glazing. For Class A+ or Passivhaus-certified homes.

· Sash up to 1.2 m × 1.8 m
· Uf 0.87 W/m²K (Salamander)
· Eligible NextGen IDAE
· Indicative price 440-560 €/m²

Aluminium

Cortizo Cor 60 / Cor 70 RPT

Spanish aluminium with thermal break. Cor 60 for entry; Cor 70 RPT for residential with Uf 1.7 W/m²K. QUALIMARINE finish for seafront.

· Max sash 1.2 m × 2.0 m
· Any RAL colour
· Salt-resistant lacquering
· Indicative price 480-680 €/m²

2026 pricing — closed projects

What a casement window costs in Costa Blanca

Indicative price VAT and installation included for a typical 1.0 × 1.2 m opening (standard kitchen/bathroom/bedroom size). Final figure depends on real measurements, hardware and glazing. Ranges from real 2025-2026 projects.

PVC entry

Kömmerling EuroFutur 70

320 — 420 €/m²

PVC 70 mm + Climalit 4/16/4 low-e + Roto NT 3-point hardware. Standard white colour.

· Visible stainless steel hinges
· 10-year warranty
· Eligible income-tax rebate 40%

Best seller

PVC comfort

Kömmerling 76 AD

380 — 480 €/m²

PVC 76 mm + central gasket + hidden hinges + 5-point hardware. Main residence.

· Foiled to any colour
· Optional 180° restraining arm
· Eligible NextGen IDAE

Aluminium

Cortizo Cor 70 RPT

480 — 680 €/m²

Thermal-break aluminium + QUALIMARINE lacquering + 5-point hardware. Modern architectural aesthetics.

· Any RAL colour
· Seafront salt resistance
· Sashes up to 1.2 × 2.0 m

Add-ons: 180° opening arm +€35/sash, hidden hinges +€28/sash, pleated side mosquito screen €65-95/unit, compact integrated shutter €130-180/m². Closed quote, no surprises.

Verifiable technical data

Standard casement technical specifications

Geometry and hardware

Profile depth: 70 / 76 / 88 mm (PVC)
Number of chambers: 5-7 (depending on system)
Steel reinforcement: Galvanised 1.5-2.0 mm
Maximum sash dimension: 1.2 m × 2.0 m
Maximum opening: 90° standard / 180° with arm
Locking points: 3 (standard) / 5 (RC2)
Guaranteed cycles: 25,000 (EN 1191)

Certified performance

Transmittance Uw: 1.0 — 1.4 W/m²K
Acoustic Rw insulation: 33-44 dB (depending on glazing)
Air tightness: Class 4 (UNE EN 12207)
Water tightness: E1200 / 9A (EN 12208)
Wind resistance: Class C5 (EN 12210)
Optional anti-intrusion: RC2 (UNE EN 1627)
CE marking: DoP per model and project

Opening typologies

Casement configurations by architecture

Casement supports several sash and opening combinations depending on the opening. These are the 6 most requested configurations in Costa Blanca and Murcia residential projects.

1 single sash

One sash opening inwards. Opening up to 1.2 m × 1.8 m. The most widespread setup in kitchen and bathroom.

Use: 70% of the casements we install.

2 sashes (1 casement + 1 fixed)

One moving sash + one lateral or upper fixed sash. Opening up to 2.0 m wide while keeping a single opening point.

Use: small living room, large bedroom.

2 casement sashes (no mullion)

Two sashes that each open to a side without a central visible profile when closed (movable bead).

Use: eat-in kitchen, country dining room.

Casement + tilt combined

Two sashes: one casement for cleaning/massive ventilation + another tilt for daily micro-ventilation.

Use: large main bedroom.

Outward opening (projecting)

The sash opens outwards. Useful where interior space is very limited. Requires a projecting arm.

Use: small bathroom, dressing room, stairwell.

Top-hung (transom)

Upper sash hinged at the top (hinged-guillotine opening) in tall openings above doors or main windows.

Use: hall, double-height stairwell.

Closed projects 2024-2026

4 real casement installations

Restaurant · Murcia

Industrial kitchen — 8 aluminium Cor 70 RPT casements

Traditional restaurant in central Murcia. Kitchen carpentry renovation after a health inspection (permanent humidity and cleaning). Anodised champagne aluminium for the humid + hot environment.

Windows installed: 8 units
Total timeline: 12 days
Investment: €4,260 (VAT incl.)
Finish: Anodised champagne

Home · Cartagena

Laundry + 3 bathrooms — Kömmerling EuroFutur 70

Full renovation of a 110 m² flat in La Manga. We replaced non-thermal-break aluminium in the laundry and 3 bathrooms with white PVC with 180° opening for easy outside cleaning (5th floor without balcony).

Windows installed: 4 units
Total timeline: 5 days
Investment: €1,840 (VAT incl.)
Opening: 180° with Maco arm

Office · Alicante

Professional office — 14 Cortizo Cor 60 casements

Tax-advisory offices in Plaza Calvo Sotelo. Renovation of 14 non-thermal-break 1990s aluminium windows with modern aluminium and acoustic glazing (office next to heavy traffic). Monthly contracted window cleaners — 180° opening saves them balcony work.

Windows installed: 14 units
Total timeline: 9 days
Investment: €7,480 (VAT incl.)
Acoustic glazing: Rw 42 dB

Community · Benidorm

60-home block — Kömmerling 76 AD casements

Kitchen and bathroom renovation approved at owners' meeting. 60 homes, 2-3 casement windows per home (kitchen + 1-2 bathrooms). Manufacturing in 3 phases, 18% volume discount on the price list. Single project certificate for the administrator.

Windows installed: 156 units
Total timeline: 8 weeks
Volume discount: 18%
Model: Kömmerling 76 AD white

See the full project gallery →

Step-by-step process

How we install casements without disrupting your routine

A casement is fitted in 2-3 hours per unit. That's why it's the fastest option for kitchen/bathroom refurbishments where the client stays in the home. These are the 6 exact steps we follow.

01

Technical visit + measurement

We measure the opening to the millimetre, assess the existing sub-frame, orientation and current closure type. We recommend casement vs tilt.

Time: 24-48 h after contact

02

Closed quote

PDF detailing each window: dimensions, profile, glazing, hardware, colour. No last-minute "extras". 30-day validity.

Time: 24-72 h after visit

03

Made-to-measure manufacturing

We cut and assemble in our own Alicante workshop. Batch traceability and quality control before shipping.

Time: 8-12 working days

04

Removal of the old window

Careful removal without damaging tiles or trims. Collection and recycling at an authorised waste site.

Time: 30-45 min/window

05

Fitting + laser levelling

Anchoring to the sub-frame with chemical screws every 40 cm. Millimetre levelling. Closed-cell Sika Boom sealing.

Time: 1.5-2 h/window

06

Hardware tune + handover

Fine adjustment of hinges and bolts, 5-cycle open/close test, site clean-up and handover of written 10-year warranty.

Time: 30 min/window

The team that fits your casement

People with names, official training and 14+ years in the area

We don't subcontract. The surveyor is in-house; the installer too. That matters because the casement looks simple but the fine hardware tuning (hinge and lock-bolt adjustment) is what makes the difference between 25 years of service life and 8.

Official training: Kömmerling Academy, Cortizo Academy, Salamander Partner Network certified.

M

Manuel

Surveyor

18 years measuring in Costa Blanca and Murcia. No measurement errors across 4,000+ projects.

A

Andrei

Multilingual coordinator

ES/EN/RU. Coordinates work with foreign clients and building administrators.

J

José

Installation lead

Kömmerling Academy + Cortizo certified. 4-person crew for large projects.

Warranty and regulations

Official documentation you receive with your casement

Each casement we install leaves with a complete dossier: CE marking, Declaration of Performance (DoP) and written 10-year warranty. Without paperwork, a claim is one person's word against another's. With paperwork, the manufacturer backs you up.

CE marking (Reg. EU 305/2011)

Declaration of Performance per model and project with certified Uw, air and water tightness values. Mandatory in Spain since 2014.

Spanish Building Code DB-HE 2019 compliance

Uw <2.2 W/m²K in climate zone B3 (Costa Blanca). Our casements reach 1.0-1.4 W/m²K — Class A or A+.

Certified Roto NT hardware

25,000 cycles guaranteed under EN 1191. If during the 10-year period the hardware loses adjustment or a bolt fails, replacement at no cost.

Optional RC2 anti-intrusion

Version with tapered security bolts + P4A laminated glass: 3-5 minutes of resistance to professional tools.

AENOR Kömmerling certification

Profiles with AENOR's N mark, manufactured to UNE EN 12608. Traceability by unique batch.

VentanaCosta 10-year warranty

10 years on the profile + 5 years on hardware + 2 years on sealing/installation. Written, signed contract — not a leaflet. If there's a defect, we come back.

Casement frequently asked questions

What we get asked most before a quote

Casement or tilt-and-turn: which suits me better?+

Rule of thumb: if you'll always open the window fully (airing for 5-10 minutes in the morning) → casement. If you want constant ventilation with the window slightly ajar (winter bedroom, heated living room) → tilt-and-turn. For kitchens/bathrooms/laundries we almost always recommend casement. For main bedrooms and living rooms, tilt-and-turn.

Which arm gives 180° opening?+

We use the Maco Multi-Matic 180° arm or Roto NX 180. Both let the sash rotate fully and sit flush against the interior wall. Extra cost is €30-45 per sash. Essential if you live on a high floor without a balcony and want to clean the outside of the glass from inside.

When I open the window, does it stay in a position or move on its own?+

With a restraining arm (Maco/Roto) the sash holds in the position you set: 30°, 60°, 90° or 180°. Without an arm, the sash will move with the wind or under its own weight. We always recommend installing the arm (included in many mid-range systems), especially in Levante-prone areas.

Is there a danger with small children at home?+

Less than with tilt-and-turn (a child can get caught in the tilt position). But there's a risk of a child opening the window fully and falling. Solutions: key-locking handle (€40/sash), opening limiter to 10 cm for safe micro-ventilation (€28/sash), or P4A laminated safety glass — mandatory on floors ≥4th under Spanish Building Code DB-SUA.

Do I lose light by installing a casement instead of a fixed?+

Minimal: modern casements have frames of 60-70 mm (PVC) or 45-55 mm (aluminium), losing about 8-12% of glazed area vs a fixed window. In kitchens and bathrooms where ventilation is needed, the loss is entirely justifiable. If light is absolute priority, we consider hidden-sash designs (Schüco AWS Block Frame) reducing visible frame to 35 mm.

Can it be combined with external shutters?+

Yes, two options: (1) compact-box shutter integrated in the monoblock (the window includes an upper box, no building works needed) — additional €130-180/m²; (2) standalone external shutter on the existing opening (cheaper if there's already a box in the wall). Compatible with Somfy motorisation or manual tape.

How long from signing to having the window installed?+

For PVC casements: 8-12 working days of manufacturing + 2-3 hours of installation per window. Typical total: 2-3 weeks from signing. For 50+ window communities, manufacturing in 4-6 weeks staggered by blocks. For aluminium the lead time is slightly longer (12-15 days manufacturing).

Why does it sometimes jam on closing after years of use?+

Usually progressive sash drop: the weight of the glass + intensive use makes the upper hinge work harder and the sash "fall" 1-2 mm. Fix: eccentric hinge adjustment (10-minute job). Under the 10-year warranty we adjust it at no cost. If it happens often, it indicates undersized hardware — that's why we always use Roto NT calibrated to real weight.

If you're torn between types

Other window types we manufacture

It's not all casement. If your opening is large, you want constant ventilation or you're after maximum security, there are alternatives. These are the most common across Costa Blanca and Murcia.

🔄

PVC and Aluminium Casement Windows

6 reasons to choose casement over tilt-and-turn

Full 90° or 180° opening

No intermediate "tilt" position

Simpler mechanics = more reliable

Instant maximum ventilation

Easy cleaning of both faces

Large sashes up to 1.2 m

How the casement opening works: 3 key components

Mechanical differences Casement vs Tilt-and-Turn

Where casement makes sense

Kitchens (residential and professional)

Laundries and utility rooms

Offices and retail premises

Owner communities

Care homes and healthcare centres

Secondary bedrooms and storerooms

When to choose casement and when tilt-and-turn

The 5 casement systems we manufacture

Kömmerling EuroFutur Classic 70

Kömmerling 76 AD

Kömmerling 88 / Salamander BluEvolution 92

Cortizo Cor 60 / Cor 70 RPT

What a casement window costs in Costa Blanca

Kömmerling EuroFutur 70

Kömmerling 76 AD

Cortizo Cor 70 RPT

Standard casement technical specifications

Geometry and hardware

Certified performance

Casement configurations by architecture

1 single sash

2 sashes (1 casement + 1 fixed)

2 casement sashes (no mullion)

Casement + tilt combined

Outward opening (projecting)

Top-hung (transom)

4 real casement installations

Industrial kitchen — 8 aluminium Cor 70 RPT casements

Laundry + 3 bathrooms — Kömmerling EuroFutur 70

Professional office — 14 Cortizo Cor 60 casements

60-home block — Kömmerling 76 AD casements

How we install casements without disrupting your routine

Technical visit + measurement

Closed quote

Made-to-measure manufacturing

Removal of the old window

Fitting + laser levelling

Hardware tune + handover

People with names, official training and 14+ years in the area

Manuel

Andrei

José

Official documentation you receive with your casement

CE marking (Reg. EU 305/2011)

Spanish Building Code DB-HE 2019 compliance

Certified Roto NT hardware

Optional RC2 anti-intrusion

AENOR Kömmerling certification

VentanaCosta 10-year warranty

What we get asked most before a quote

Other window types we manufacture

Tilt-and-Turn

Sliding

Lift-and-Slide HS

Anti-Burglary RC2/RC3

Get your quote in under 24 hours

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