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Sliding (patio) doors for a terrace (terrace doors) — compare companies
On OKNA.ua you compare sliding doors for a terrace — also called terrace doors or patio doors — and sliding windows for a terrace and balcony from verified window companies across Ukraine. A sliding door is a large glazed sash that does not swing into the room but glides sideways along the frame: it gives a wide way out and does not take up the space in front of the exit. Sliding doors come in a warm version (insulated PVC or thermally-broken aluminium with a glass unit — for heated rooms) or a cold version (a lightweight aluminium profile without a thermal break — for non-winter protection of a balcony or terrace from wind, rain and dust). OKNA.ua is a niche windows-and-doors portal running since 1999 (over 25 years): you independently compare offers from many verified companies, choose by price, rating and lead time, and leave a request with one. Measuring, manufacturing to your dimensions, delivery, installation and warranty are all carried out by the company you choose, not by OKNA.ua.
Sliding doors vs sliding windows for a terrace: the difference
The word sliding describes the opening method — the sash glides sideways along the frame instead of swinging into the room. By purpose, sliding systems fall into two groups:
- Sliding doors for a terrace (terrace doors) — a large sash from the floor that you walk through to go outside. These are HS portals, parallel-slide PSK and bi-fold concertinas. They are fitted to a way out of the house onto a terrace, a panoramic exit and a winter garden.
- Sliding windows for a terrace and balcony — glazing whose sashes slide above a parapet or sill. You do not walk through such a sliding window — it protects the space and lets in light. It is the typical solution for glazing a balcony, a loggia and a covered terrace.
Terrace windows and sliding doors often sit side by side in one opening: sliding doors below for the exit, sliding or fixed glazing to the sides and above. Which you need in your case is advised by the company you choose, based on the opening dimensions.
Types of sliding doors for a terrace
Sliding doors for a terrace differ by opening system — that affects the width of the passage, the space in front of the door and the price. Companies calculate the exact cost individually for your opening; below are the main types.
- Portal sliding (lift-and-slide, HS) — a large sash glides sideways along the frame; takes no space in the room and gives the widest passage onto the terrace. Ideal for a panoramic exit.
- Parallel-slide (PSK) — the sash moves slightly forward and then slides sideways; a more compact sliding system for smaller openings and balconies.
- Bi-fold concertina (FS) — the sashes fold into a stack; clears almost the whole opening when you want a fully open exit.
If a sliding system is not needed, a terrace can take French doors (two sashes opening wide with no central post — a fully open passage, handy for carrying out furniture or a laid table) or classic tilt-and-turn doors (they swing open sideways and tilt for ventilation — the most affordable option).
Profile and glass unit
- Profile — PVC (metal-plastic) or aluminium; sliding doors use a reinforced profile with a greater installation depth, because the sash is heavy.
- Glass unit — for a heated home, a double-chamber or energy-saving unit (with i-glass, Low-E, argon); for safety at ground level, with tempered glass or triplex.
Warm PVC and aluminium sliding doors and windows in Ukraine are made to ДСТУ EN 14351-1:2020 (Windows and doors — Part 1: Windows and external pedestrian doorsets), in force from 01.02.2021 in place of the former ДСТУ Б В.2.6-15:2011. It also covers balcony and external doors and sets, among other things, the heat-transfer coefficient Uw (W/(m²·K)) — a characteristic of the window or door as a whole; the glass unit alone is denoted Ug. The lower the Uw or Ug value, the warmer the construction.
Sliding windows for a terrace and balcony: cold and warm glazing
Sliding windows are when glazed sashes slide sideways above a balcony parapet or a terrace sill rather than opening inward. Such glazing protects from wind, rain, dust and snow, lets in light and saves space, because the sashes need no room to open. By thermal performance, sliding windows are divided into cold and warm.
Cold aluminium sliding glazing (Provedal-type)
Cold glazing uses a lightweight aluminium profile without a thermal break (a common example is Provedal-type systems) with single glass. It is light, inexpensive and does not overload the parapet, so it is often fitted to balconies, loggias and covered but unheated terraces. The main job of cold glazing is protection from the weather, not heat retention, so it is not suitable for heated, living spaces.
Warm sliding glazing (PVC or warm aluminium)
Warm glazing uses an insulated PVC profile or thermally-broken (warm) aluminium with an energy-saving glass unit (i-glass, argon). It holds an above-zero temperature, so it suits a heated terrace, a kitchen-diner, a winter garden or a living balcony joined to the room. It costs more than cold glazing and weighs more.
Sliding windows for a balcony
For a balcony, cold aluminium sliding glazing is most often chosen: it is light, does not overload the slab and parapet, and slides sideways without taking space on a narrow balcony. If the balcony is insulated and joined to the room, warm PVC or aluminium glazing with a glass unit is fitted instead. For more on the options, see the balcony glazing section.
Warm or cold sliding glazing: comparison
| Parameter | Cold sliding glazing | Warm sliding glazing |
|---|---|---|
| Profile | Lightweight aluminium, no thermal break (Provedal-type) | PVC or thermally-broken (warm) aluminium |
| Glass | Mostly single glass | Energy-saving glass unit (i-glass, argon) |
| Thermal insulation | Protects from wind, rain, dust, snow; does not retain heat | Retains heat, holds an above-zero temperature |
| Where it is used | Unheated balcony, loggia, covered terrace | Heated terrace, kitchen-diner, winter garden, living balcony |
| Weight | Lighter, less load on the parapet | Heavier |
| Approx. price | Lower | Higher |
| Standard | Light glazing; no separate thermal-insulation requirements | ДСТУ EN 14351-1:2020 (sets Uw) |
Sliding doors or sliding windows for a terrace: what to choose
| Criterion | Sliding windows (glazing) | Sliding doors (terrace doors) |
|---|---|---|
| What it is | Glazed sashes slide above a parapet or sill | A large sash from the floor that you walk through |
| Way outside | No — it is glazing, not a passage | Yes — a passage from the floor onto the terrace |
| Typical place | Balcony, loggia, parapet of a covered terrace | Way out onto a terrace, panoramic exit, winter garden |
| Systems | Cold aluminium (Provedal-type) or warm PVC/aluminium | HS portal, PSK, bi-fold, French, tilt-and-turn |
| Version | Cold or warm | Cold or warm (more often warm) |
Not sure what you need — add the opening dimensions or a photo to your request, and the company you choose will suggest the best solution. You can pre-estimate a configuration in the OKNA.ua calculator.
Sliding and portal doors (HS / PSK)
Sliding (portal) doors are systems in which a large sash slides sideways along the frame and gives a wide glazed passage without taking up the space in front of the exit. The two most common sliding-door systems are the HS portal and PSK.
HS portal (lift-and-slide)
In an HS portal the sash first lifts slightly on the hardware and then rolls easily to the side. The system is designed for a large, heavy sash and full floor-to-ceiling glazing, so it is the optimal choice for a panoramic exit onto a terrace.
PSK (parallel-slide / tilt-and-slide)
In a PSK system the sash moves slightly forward from the frame and slides parallel to the side. These are more compact sliding doors than HS — for smaller openings, balconies and loggias where there is no room for a heavy portal.
Why people look for sliding terrace doors and windows on OKNA.ua
- A windows-and-doors portal since 1999. OKNA.ua has specialised in the windows-and-doors niche for over 25 years — from PVC windows to sliding terrace doors and sliding glazing.
- Independent comparison of many companies. You compare offers from verified window companies across Ukraine — system types, profiles, prices and lead times — and choose the best option, instead of calling each one separately.
- Verified manufacturers and sellers. The platform lists companies that make sliding doors and glazing to your dimensions for a specific opening, with no one-size-fits-all solutions.
- Measuring and installation from the chosen company. Measuring, delivery and fitting are done by the company you choose; the heavy sliding sash is installed using a method that preserves the geometry and smooth travel.
- Transparent prices and warranty. You see starting prices from different companies and choose by cost and lead time; the warranty on the doors, glazing and installation is provided by the chosen company.
For general information on PVC windows — types, profiles, glass units — see the PVC windows section or the catalogue of window companies.
How to order sliding doors or sliding glazing
- Choose a company in the catalogue on this page — by price, rating and lead time.
- Leave it a request (opening dimensions + the desired type: sliding doors or windows, warm or cold version, profile, glass unit) — a representative will get in touch, take measurements if needed and quote an exact price.
- The chosen company manufactures the sliding doors or glazing to your dimensions, delivers and installs them with a warranty.
Sliding terrace doors in your city
- Sliding terrace doors Kyiv
- Sliding terrace doors Odesa
- Sliding terrace doors Kharkiv
- Sliding terrace doors Lviv
- Sliding terrace doors Dnipro
Questions and answers
Are sliding doors for a terrace the same as terrace doors?
Yes, they are synonyms: sliding doors for a terrace, terrace doors and portal doors all describe the same construction — a large glazed sash that slides sideways and gives a way out. Do not confuse them with sliding windows: windows (glazing) slide above a parapet or sill and you do not walk through them. Sliding doors come in warm and cold versions; which you need in your opening is advised by the company you choose.
How do sliding windows for a terrace differ from sliding (portal) doors?
Sliding windows are glazing whose sashes slide above a parapet or sill; you do not walk through it — it protects the space and lets in light, so it is fitted to a balcony, a loggia or a covered terrace. Sliding (portal) doors are a large sash from the floor that you walk through onto the terrace. Put simply: windows glaze, sliding doors give a passage. Both come cold or warm; the chosen company will suggest the best solution.
Should I choose cold or warm sliding glazing for a terrace or balcony?
Cold aluminium sliding glazing (Provedal-type) is light and inexpensive, protects from wind, rain, dust and snow but does not retain heat; it is fitted to unheated balconies and covered terraces. Warm glazing (PVC or thermally-broken aluminium with a glass unit) holds an above-zero temperature and suits a heated terrace, a kitchen-diner, a winter garden or a living balcony. If the space is unheated — choose cold; if it is an extension of the room — warm.
How much do sliding terrace doors and sliding glazing cost?
There is no single price: the cost of sliding doors depends on the system (HS or PSK), the size and weight of the sash, the profile (PVC or aluminium), the glass unit, the hardware and the warm or cold version. Terrace sliding glazing is cheaper if it is cold aluminium, and dearer in a warm version. Portal systems are heavier and harder to install, so the price is calculated individually for the opening. Choose a company in the OKNA.ua catalogue and leave a request — you will get an exact calculation after measuring.
Can a terrace or balcony be glazed with sliding systems?
Yes. A balcony, a loggia or a covered terrace is glazed with sliding systems: cold aluminium sliding glazing (Provedal-type) for an unheated space, or warm PVC or aluminium glazing with a glass unit for a heated, living one. For a wide way out onto the terrace from the floor, sliding portal doors (HS or PSK) are added. The best option for your opening and budget is chosen by the company you find on OKNA.ua.
How does the HS portal differ from PSK?
The HS portal (lift-and-slide) is designed for a large, heavy sash and full floor-to-ceiling glazing — the choice for a wide panoramic exit onto a terrace. In a PSK (parallel-slide) the sash moves slightly forward and slides parallel to the side — these are more compact sliding doors for smaller openings, balconies and loggias. Put simply: HS is for a large exit onto a terrace, PSK for more compact glazing. Which suits your opening better, the chosen company will advise.
What is the warranty on sliding doors and windows?
The warranty on the construction (profile, glass unit, hardware) and on the installation is given by the company you choose on OKNA.ua — it states the term and conditions in the contract. OKNA.ua is a platform for comparing and choosing a company; manufacturing, installation and warranty service for the sliding doors and glazing are carried out by the chosen company. We advise checking the warranty on the sliding hardware separately, because in terrace systems it works under load.
How do I choose a company for sliding doors or glazing?
Compare companies in the OKNA.ua catalogue by price, rating, lead time and the systems they work with (HS, PSK, cold or warm aluminium, PVC). We advise approaching several companies you trust at once, getting quotes and comparing. Measuring, manufacturing, installation and the warranty on the sliding doors are carried out by the company you choose, not by OKNA.ua. The information on this page was updated in 2026.
