Window comfort depends as much on how the sash opens as on the profile. We explain the pros, limits and best locations of casement, bottom-hung, tilt and turn and sliding sashes in your home.
When ordering new windows or doors, people usually talk about the profile, glass thickness and colour. Yet the choice that really determines everyday comfort is how the sash opens. The wrong sash type means sashes hitting furniture, curtains constantly pushed aside, outer glass that cannot be cleaned, or windows that are never opened for years. In this article we explain the most common opening types used in homes around Ortaca, Dalyan, Köyceğiz and the surrounding area, with their advantages, limits and best locations.
Side-hung casement: the classic, most airtight option
A side-hung casement rotates inwards on hinges along one side. When closed, the sash presses against the frame on all four edges, so the EPDM gaskets are compressed evenly; this makes it one of the most reliable opening types for air, water and sound insulation. You can fully ventilate the room, easily clean the outer glass from inside and get a wide escape opening in an emergency.
The downside is that it takes up indoor space when open. If you plan to place a desk, a kitchen worktop or a tall plant pot in front of the window, the sash may hit it. Very wide single sashes also become heavy; the load on the hinges increases and there is a risk of sagging over time. For wide openings it is therefore healthier to split the sash in two or make part of it fixed glazing.
Bottom-hung and tilt and turn: safe ventilation
A bottom-hung (tilt) sash is hinged along its lower edge and its top tilts inwards. This provides continuous ventilation through a gap of a few centimetres; rain does not get in and the risk for children and pets is reduced. It is commonly used on its own in small windows such as bathrooms, toilets, pantries and stairwells.
Tilt and turn combines both: turn the handle horizontal and the sash opens sideways; turn it upwards and the sash moves to the tilt position. In hot, humid areas like Dalaman and Ortaca you can leave the window tilted overnight in summer to cool the house, then open it fully during the day for cleaning. Because tilt and turn hardware has more components, the quality of the stay arm, corner drives and locking keeps matters; cheap hardware can make the handle stiff over time and let the sash drop into the wrong position.
Sliding sash: the space-saving solution
In sliding systems the sashes glide sideways on a track and never project into the room. They are ideal for balcony doors, terrace exits, windows facing narrow corridors and openings with furniture in front of them. They offer a wide view and can be made in large sizes.
Classic sliding systems rely on brush seals, so their air permeability is generally higher than that of casement sashes. Dust, sand and leaves collecting in the track shorten the life of the rollers; especially in homes close to the beach, the tracks need regular cleaning. In villas with wide openings that require better insulation, lift-and-slide (HS) systems, which raise the sash before moving it, are preferred.
Fixed glazing and combinations
Not every pane needs to open. Stairwells, the upper parts of high-ceilinged living rooms or picture windows can be fixed glazing. Fixed glass is more economical and, with a slimmer profile section, lets in more light. A common approach is to split a wide opening into a fixed central pane with tilt and turn sashes on either side. This keeps the view uninterrupted while meeting ventilation and cleaning needs. If the outside of a fixed pane will be hard to reach, a practical rule is to make at least one adjacent sash openable. With fire and emergency escape in mind, it is also recommended that at least one sash in every bedroom can open fully.
Comparison table
| Sash type | Insulation | Takes indoor space | Suitable locations |
|---|---|---|---|
| Side-hung casement | Very good | Yes | Bedroom, living room, children’s room |
| Bottom-hung (tilt) | Very good | Little | Bathroom, pantry, stairwell |
| Tilt and turn | Very good | Yes (when turned open) | Almost any room, especially kitchen and bedroom |
| Classic sliding | Moderate | No | Balcony, terrace, tight spaces |
| Lift-and-slide (HS) | Good to very good | No | Wide terrace and garden exits |
| Fixed | Best | No | Views, stairwells, upper sections |
Practical points when choosing
- Furniture layout: Decide in advance what will stand in front of the window; the opening side, left or right, should be chosen accordingly.
- Sash size: Very large casement sashes get heavy. Respecting the manufacturer’s maximum sash dimensions prevents sagging.
- Insect screen compatibility: Inward-opening sashes use fixed or pleated screens on the outside, sliding sashes use sliding screens. Decide on the screen together with the sash type.
- Security: On ground floors and in holiday homes, mushroom-head locking points and lockable handles are worth considering.
- Cleaning: On upper floors, avoid fixed panes whose outer surface cannot be cleaned from inside.
Conclusion
The right sash type depends on how the room is used, the furniture layout and your ventilation habits. As a general rule, tilt and turn works well in rooms, bottom-hung in wet areas, and sliding or lift-and-slide systems on balconies and terraces. If you are undecided, our team offers a free site survey and measurement, giving on-site advice for each opening so you can plan a solution that is both comfortable and long-lasting.
