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VVentanaCosta
Terrace Enclosures in Alicante

Terrace Enclosures in Alicante

Terrace Enclosures in Alicante

Complete enclosure of terraces and porches. Aluminium + double glazing. Gain extra usable space year-round.

★★★★★ 4.9/5 on Google · Official Kömmerling Distributor · In Alicante since 2010

Why customers choose us for terrace enclosures

Specialists in terrace glazing in Costa Blanca

In Costa Blanca and Murcia, 1 in 2 homes has an underused terrace, balcony or porch. We turn that wasted space into a usable room year-round with Lumon, Cortizo and Kömmerling systems. Our own factory, multilingual team, written 10-year warranty.

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Own factory in Alicante

850 m² workshop, 30 km from the average customer. We cut Cortizo and Kömmerling profiles without intermediaries: 18-25% savings vs franchise chains.

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Lumon, Cortizo, Kömmerling systems

We work with the 3 top-tier European manufacturers: Lumon glass curtains (Finnish), Cortizo Cor 60/Cor Vision/HS200 sliding doors (Spanish) and Kömmerling PVC (German).

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Service in 4 languages

47% of Costa Blanca residents are foreign (INE 2024): we serve in Spanish, English, Russian and German. Quote, contract and warranty in your language.

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Condo associations

We handle the standard application for owners' meetings. Over 40 communities completed in Habaneras, La Veleta, Punta Prima, Benidorm centre and Calpe beach.

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IRPF / IDAE subsidies

Terrace enclosure with low-e glass = thermal envelope upgrade. Refundable up to 60% via IRPF income tax and 40-80% via NextGen IDAE. We handle all paperwork.

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Written 10-year warranty

10-year warranty on the profile + 5 years on hardware + 2 years on sealant. Signed contract, not a brochure. If you get condensation, leaks or misalignment, we come back at no cost.

Systems available

5 terrace enclosure systems we install

We don't sell a single system — we recommend what fits your terrace, budget and condo rules. Here's what we install and when to choose each one.

Most popular

Frameless glass curtains

Lumon Visión / Lumon Aero system: 10-12 mm tempered glass with no vertical frames. 360° view. Folds and slides for full opening.

from €450/m²

Balconies, penthouses, communities with strict facade rules

Folding aluminium slider

Cortizo Cor 60 Folding Sash: 3-7 sashes that fold accordion-style to one side. 85% opening of the bay. Class 4 thermally-broken frame.

from €620/m²

Mid-large terraces 8-20 m², villas, chalets

HS 200 lift-and-slide

Cortizo COR HS200 with double low-e glazing. Sashes up to 400 kg lift and slide. Thermal insulation Uw 1.4 W/m²K.

from €850/m²

Living-room-terrace by pool, large bays >3 m

Panoramic minimalist fixed glazing

Cortizo Cor Vision: visible frame just 25 mm. Tempered double glazing 6+6/16/4 low-e. Premium contemporary villa aesthetic.

from €720/m²

Design villas, terraces with sea views

Slim-frame slider

Kömmerling 76 AD PVC slider: 2-4 sashes, 70-90 mm frames, climalit low-e glass. Excellent value for money.

from €380/m²

80s-90s apartments, second homes

Not sure which to choose?

Book a free site visit and our technician recommends the right system based on orientation, budget and your community's rules.

Book free visit →

Your type of terrace

Solutions by terrace type in Costa Blanca

Enclosing a 5 m² balcony on the 8th floor in Benidorm is not the same as a 35 m² terrace at a Calpe villa. These are the 5 most common typologies and what we recommend.

Apartment — 4-8 m² balcony

Standard apartment balcony, 1.5-2 m deep, 3-4 m wide. Constraint: uniform aesthetics with the community facade.

Recommended system

Lumon Visión glass curtains (no visible frames). Complies with facade rules in 95% of communities.

Investment

€1,800 – €3,200 (VAT and installation included).

Penthouse — 20-40 m² terrace

Wraparound penthouse terrace with railing. Opportunity to gain a room or extended living room. Strong levante wind.

Recommended system

Cortizo Cor 60 folding slider + panoramic Cor Vision fixed glazing. Double low-e glass.

Investment

€12,000 – €22,000 (VAT and installation included).

Townhouse — rear terrace

Townhouse garden-terrace, 12-25 m², single level. Typically a BBQ / outdoor dining area.

Recommended system

Cortizo HS 200 lift-and-slide with low-e glass. Airtight closure for winter use.

Investment

€7,500 – €14,000 (VAT and installation included).

Villa — pool terrace

Standalone villa, terrace next to pool 25-50 m². Aesthetics matter, panoramic views to preserve.

Recommended system

Cor Vision 25 mm frames + HS 200 sliding section. Safety tempered glass 6+6.4. QUALIMARINE anti-salt lacquer.

Investment

€15,000 – €28,000 (VAT and installation included).

Ground floor with private garden

Ground floor, covered porch 10-18 m² + garden. Gain usable room + intrusion protection.

Recommended system

Kömmerling 76 AD PVC slider with multipoint lock + P4A safety laminated glass.

Investment

€5,500 – €10,000 (VAT and installation included).

Which system suits you

Glass curtains vs aluminium slider

The 2 most demanded options in Costa Blanca. There's no "best": it depends on use (season, noise, budget). Here's our comparison after 14 years installing both.

CriterionLumon glass curtainsCortizo aluminium slider
Price €/m²€450-650€620-1,100
Aesthetics (visible frames)No vertical frames ✓✓✓45-90 mm frames ✓
Thermal insulation Uw3.5-4.5 W/m²K ✓1.4-2.2 W/m²K ✓✓✓
Acoustic insulation Rw25-28 dB ✓33-42 dB ✓✓✓
Natural ventilation100% opening (fold) ✓✓✓50-85% opening ✓✓
Panoramic view360° unobstructed ✓✓✓View with vertical frames ✓
Annual maintenanceGlass cleaning ✓✓✓Hardware lubrication 1x/year ✓✓
Coastal durability40+ years50+ years with QUALIMARINE

Summary: glass curtains for spring-summer use balconies with sea views; aluminium slider for year-round terraces with thermal/acoustic insulation.

How we work

Enclosing your terrace step by step

01

Contact and orientation

Call, WhatsApp or fill out the form. We orient you in 15 min: recommended system, price range, deadlines.

Time: same day

02

Free site visit

Our technician visits your terrace, measures to the millimetre, assesses orientation, wind, condo rules and any prep work needed.

Time: 24-48 h

03

Fixed quote

Detailed PDF: system, profile, glass, hardware, colour, installation and certificates. Fixed price, no surprise "extras" later.

Time: 24-72 h after visit

04

Custom manufacturing

Cut and assembled in our own workshop in Alicante. Batch traceability, QC before shipment to site.

Time: 10-18 working days

05

On-site installation

Our own team (not subcontracted). Anchoring, sealing with Sika Boom foam + neutral silicone, end-of-work cleanup included.

Time: 1-3 days per terrace

06

Handover and warranty

Signed handover document, CE marking, Declaration of Performance, installer certificate and 10-year warranty. Full dossier on paper + PDF.

Time: same day as installation

2026 prices — reference

How much does enclosing a terrace cost in Alicante

Reference prices with VAT, installation, sealing, debris removal and certificates included. Final figure depends on measurements, system and floor. These are real ranges from projects closed in 2025-2026.

Small balcony

4-6 m² · standard apartment

€1,800 — €2,800

Lumon Visión glass curtains, 8-10 mm tempered glass, upper and lower aluminium tracks, 1-day installation.

  • · Old railing removal if needed
  • · Perimeter sealing with neutral silicone
  • · Technical document for condo
Most popular in Costa Blanca

Mid-size terrace

10-15 m² · penthouse or townhouse

€3,500 — €6,500

Cortizo Cor 60 folding slider + double low-e glass + optional fixed section. Year-round closure.

  • · Colour: any RAL or anodised
  • · Anti-pry hardware
  • · Optional insect screens

Large terrace

20-40 m² · villa or wraparound penthouse

€8,000 — €18,000

Panoramic Cortizo Cor Vision + HS 200 lift-and-slide + safety low-e glass 6+6.4.

  • · QUALIMARINE lacquer (salt-resistant)
  • · Optional Somfy motorised opening
  • · SunGuard solar-control glass

Quotes are fixed and in writing — no surprises at the end. Free site visit throughout Costa Blanca and Murcia.

What comes as standard

Standard technical specifications

Tempered safety glass

Standard thickness
8, 10 or 12 mm
Treatment
Tempered UNE EN 12150
Double-cavity glazing
4/16/4 with argon (opt.)
Low-emissivity glass
Magnetron Ag coating
Acoustic glass
Laminated 6/16/3+3 (Rw 42 dB)
Safety glass
Tempered + laminated P4A/P5A
Glass warranty
10 years (no condensation)

Cortizo thermally-broken aluminium

Thermal break
24-34 mm polyamide
Air tightness
Class 4 (UNE EN 12207)
Water permeability
Class E1200 (9A)
Wind resistance
Class C5
Overall Uw insulation
1.4-2.2 W/m²K
Acoustic Rw insulation
33-42 dB
QUALIMARINE marine lacquer
1,500 h salt resistance

Regulations and permits

Terrace enclosure: mandatory paperwork

Enclosing a terrace modifies the building's exterior look and increases usable floor area. These are the permits and certificates you'll need — we handle them with you.

CTE DB-HE (energy efficiency)

Spain's Building Code zone B3 requires Uw ≤ 2.2 W/m²K for openings. Our sliding systems clear this with margin and unlock subsidy eligibility.

CE marking + DoP

Every enclosure leaves the workshop with CE marking and a Declaration of Performance per EU Regulation 305/2011. Mandatory since 2014.

Condo association permit

Most communities require board approval when facade is modified. We prepare technical memo + photomontage to present.

Municipal minor works license

Alicante, Torrevieja, Benidorm town halls require a license (€40-120). We file the application and technical project if over 25 m².

ITE / Technical Building Inspection

If your building has an active ITE, the enclosure must be recorded at the next inspection. We provide a technical sheet for the architect.

Energy Performance Certificate (EPC)

Enclosing your terrace upgrades the energy rating by 1-2 letters (D-E to B-C). Required for IDAE subsidies and IBI tax discounts.

Active 2026 grants

Subsidies for enclosing your terrace

Combining these grants you recover between 30% and 80% of the investment. We handle the technical paperwork (itemised invoice, before/after energy certificate, installer declaration) — you just present it.

NextGen IDAE

National energy retrofit program: if the enclosure + existing windows improve heating/cooling demand by >30% → subsidy 40-80%. Open until 31/12/2026.

up to 80%
IRPF income tax deduction

Royal Decree-law 19/2021: up to 60% IRPF tax credit for works that reduce non-renewable primary energy consumption. €15,000 limit per home until 31/12/2026.

up to 60%
Municipal IBI discount

Alicante, Torrevieja, Benidorm and Murcia town halls discount IBI 25-50% for 3-5 years for homes that upgrade energy rating with certified works.

up to 50%/year
IVACE Valencia Region

IVACE energy-efficiency line for private homes and communities in Valencia Region: up to 35% additional, compatible with IDAE and IRPF.

up to 35%

Indicative information. Amounts and deadlines subject to current regulation and budget availability.

Recent projects

Enclosure projects closed in 2025

Photo: Lumon balcony Alicante (coming soon)
Apartment · Alicante centre

5.2 m² balcony — frameless Lumon Visión

Swedish owner, second home. Wanted minimalist aesthetics to preserve the harbour view. Condo approval on 1st vote with photomontage.

Total lead time
22 days
Investment
€2,480 (VAT incl.)
System
Lumon Visión 6 sashes
Photo: Benidorm penthouse 35 m² (coming soon)
Penthouse · Benidorm Rincón

35 m² wraparound terrace — Cortizo Cor 60 folding

British resident family. Wanted to use the terrace in winter with sea view. Mixed solution: folding slider + panoramic fixed glazing on the side.

Total lead time
35 days
Investment
€18,700 (VAT incl.)
Energy savings
38% (EPC cert.)
Photo: Calpe pool villa (coming soon)
Villa · Calpe Maryvilla

42 m² pool terrace — Cortizo Cor Vision

Front-line home with Peñón de Ifach view. 25 mm frames + 6+6.4 safety tempered glass. QUALIMARINE anti-salt lacquer.

Total lead time
42 days
Investment
€26,400 (VAT incl.)
IDAE subsidy
€9,200 (35%)
Photo: Torrevieja condo 24 balconies (coming soon)
Community · Torrevieja Habaneras

24 uniform balconies — Lumon Visión whole block

48-home community voted to enclose all balconies with uniform aesthetics. 18% volume discount, staggered 4-week manufacturing.

Total lead time
7 weeks
Total investment
€54,600 (VAT incl.)
Per home
€2,275

View full project gallery →

Geographic coverage

Cities where we install terrace enclosures

Free site visit in under 48 h throughout Costa Blanca and Murcia. If your town isn't listed but is in the area, call us — we typically cover from Cartagena in the south to Dénia in the north.

The team and the factory

Named people, 850 m² workshop in Alicante

VentanaCosta doesn't subcontract: the technician who measures is in-house, and so is the installer. This matters because every terrace has its own quirks — strict condo rules, levante wind, municipal regulations, tricky access.

Installing in Costa Blanca and Murcia since 2010. 14 years, +3,200 projects, 0 lawsuits.

M

Manuel

Technical surveyor

18 years measuring terraces in Costa Blanca. Specialist in large sliders.

A

Andrei

Multilingual liaison

Spanish, English, Russian and German. Coordinates jobs with foreign clients.

J

José

Install team lead

Cortizo + Lumon Academy certified. 4-person in-house install crew.

Real reviews

What our customers say

EP

Elena Petrova

Torrevieja · March 2025

★★★★★

"We enclosed a 6 m² balcony with Lumon Visión. Looks like new, no frames, harbour view preserved. They served in Russian, fixed price with no surprises. Andrei coordinated everything perfectly."

JM

John Martin

Calpe · June 2025

★★★★★

"Pool terrace enclosed with Cortizo Cor Vision. Professional team, 3-day installation, cleanup included. Immediate noticeable difference in temperature and noise. 10-year warranty in writing. 100% recommend."

CR

Carmen Ruiz

Benidorm · October 2025

★★★★★

"Penthouse with wraparound 35 m² terrace. Manuel measured to the millimetre and proposed mixed folding slider + panoramic fixed glazing. Handled condo permit and town hall license. Excellent service."

Frequently asked questions

Common doubts resolved

How much does it cost to glaze a terrace?+

Depends on size and system: small balcony 4-6 m² with glass curtains €1,800-2,800; medium terrace 10-15 m² with folding slider €3,500-6,500; large terrace 20-40 m² with lift-and-slide + panoramic fixed glass €8,000-18,000. All prices include VAT, installation, sealing and certificates.

Do I need condo association approval?+

Yes, in the vast majority of communities. Enclosing a terrace modifies the facade and requires a board vote (3/5 majority per Spanish Horizontal Property Law art. 17). We prepare a technical memo + photomontage + plan for your administrator to present. Approved 1st-2nd meeting in 95% of cases.

What's the difference between Lumon and Cortizo?+

Lumon = frameless glass curtains (minimalist aesthetics, 360° view, light thermal insulation). Cortizo = aluminium sliders with thermally-broken profiles (strong thermal/acoustic insulation, pricier, visible frames 25-90 mm). Lumon for spring-summer-use balconies; Cortizo for year-round terraces.

Do IDAE subsidies cover terrace enclosures?+

Yes, if the enclosure helps reduce annual energy demand by >30%. To qualify you must submit a before/after energy certificate. Refund 40-80% based on owner's income. We handle all technical paperwork.

Does it reduce street noise?+

Yes, depending on the system and glass. Lumon glass curtains: 25-28 dB reduction. Cortizo aluminium slider + double glass: 33 dB. Slider + laminated acoustic glass 6/16/3+3: 42 dB (eliminates almost all noise). For very noisy areas we always recommend laminated acoustic glass.

What warranty do you offer?+

10-year warranty on the profile + 5 years on Roto / Cortizo hardware + 2 years on perimeter sealant. Signed contract, not a brochure. If you get condensation, leaks or misalignment, we come back at no cost. We also cover glass against spontaneous tempering breakage.

What's the total lead time from quote request?+

Site visit 24-48 h + fixed quote 24-72 h after visit + manufacturing 10-18 working days (depending on system) + installation 1-3 days. Total: 3-5 weeks from first contact. If a municipal license is needed, add 2-4 extra weeks.

Are insect screens included?+

Not by default — they're optional (€80-160 per slider unit, €220-380 for a pleated screen for large bays). Recommended if you live near a damp area (Torrevieja saltworks, Mar Menor) or have a pool nearby. We list them as a separate line in the quote.

We also install

Products related to terrace enclosures

If you enclose a terrace, it often makes sense to address the rest of the envelope at the same time: windows, partitions, pergolas. Same site visit, same fixed quote.

Request your quote in less than 24 hours

Free on-site visit throughout Costa Blanca and Murcia.

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We work in these areas

Alicante · Elche · San Vicente del Raspeig · Mutxamel · El Campello · Villajoyosa · Benidorm · Altea · Calpe · Moraira · Jávea · Denia · Crevillente · Santa Pola · Guardamar del Segura · Torrevieja · Orihuela · Pilar de la Horadada · Almoradí · Murcia · Cartagena · San Pedro del Pinatar

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