A reliable curtain measurement guide can help homeowners, interior designers, contractors, and property developers understand what is required before ordering made-to-measure curtains. Accurate measurements determine how wide the curtains should be, how far they should extend, and where the curtain rod or track should be installed.
At Kalus Top Curtains, we provide professional measuring services for custom curtains, sheers, blackout curtains, blinds, and other window treatments across Kenya. Although measuring a simple window may appear straightforward, unusual window shapes, large openings, high ceilings, and layered curtains require careful planning.
Why Accurate Curtain Measurements Matter

Incorrect measurements can affect both the appearance and functionality of your curtains.
Accurate measurements help achieve:
- Proper window coverage
- Correct curtain fullness
- Consistent curtain lengths
- Better privacy
- Improved light control
- Smooth curtain operation
- Professional finishing
For custom-made curtains, even relatively small measurement errors can affect the final result.
What You Need Before Measuring
For basic measurements, you can use a reliable steel tape measure and record measurements in centimetres or millimetres.
You may also need to determine:
- Window width
- Window height
- Desired curtain drop
- Rod or track position
- Curtain stacking space
- Mounting surface
Always record measurements clearly and avoid mixing measurement units.
How to Measure Curtain Width
The required curtain width depends on the width of the area the curtains are intended to cover.
Measuring an Existing Curtain Rod
If a curtain rod is already installed and will remain in place, measure the usable rod length rather than simply measuring the glass.
Measuring for a New Rod
If a new rod will be installed, measure the window and determine how far the rod should extend beyond each side.
Extending the curtain hardware beyond the window can allow the curtains to open away from the glass and provide better coverage when closed.
How to Measure Curtain Track Width
For curtain tracks, measure the required track length based on the window opening and desired curtain stacking area.
For large windows and sliding doors, the track may need to extend significantly beyond the opening.
A professional installer can determine the most suitable track configuration based on the room and curtain design.
How to Measure Curtain Drop
Curtain drop refers to the vertical measurement from the intended starting point of the curtain to its finished bottom position.
The starting point may be:
- Above the window
- At the top of the window
- Near the ceiling
- Directly from a ceiling-mounted track
The finishing point may be:
- Just below the window
- At the floor
- Slightly above the floor
- With a decorative puddled finish
The correct choice depends on the room, curtain style, and interior design.
Floor-Length Curtains
Floor-length curtains are among the most popular choices for modern homes.
They create a continuous vertical line that can make ceilings appear higher and interiors feel more sophisticated.
For floor-length curtains, the measurement should account for the exact position of the track or rod and the desired clearance from the floor.
Ceiling-to-Floor Curtains
Installing curtains from near the ceiling to the floor creates a dramatic and luxurious appearance.
This style works particularly well in:
- Modern living rooms
- Luxury bedrooms
- Apartments
- Villas
- Hotels
- Large windows
- Floor-to-ceiling glass doors
Accurate measurement is particularly important because even a small difference can become noticeable across a large curtain.
Measuring for Layered Curtains

Layered curtains require additional planning because two curtain layers occupy the same window area.
A typical system may include:
Sheer curtain + blackout or decorative curtain
The installer must account for the width and position of both tracks or rods while ensuring that the curtains move independently.
This allows homeowners to control daylight and privacy more effectively.
Measuring Bay Windows
Bay windows can be more complicated than standard rectangular windows.
Each section may require separate measurements, depending on the curtain hardware and design.
The installer may need to consider:
- Individual window widths
- Angles
- Corner positions
- Track or rod configuration
- Curtain stacking areas
Professional measurement is recommended for complex bay-window installations.
Measuring Large Sliding Doors
Large sliding doors often require wide curtain systems and additional support.
The curtain hardware should provide enough space for the curtains to move away from the doorway without obstructing normal access.
Heavy fabrics may also require stronger tracks or rods.
Measuring for Blackout Curtains
Blackout curtains require careful measurement because light can enter through gaps around the sides, top, or bottom.
A suitable installation can improve coverage by positioning the curtain system beyond the window opening and using an appropriate curtain drop.
For maximum light control, professional measurement and installation are recommended.
Common Curtain Measuring Mistakes
Several simple mistakes can lead to poorly fitted curtains.
Measuring Only the Glass
The glass area does not always represent the total area that needs to be covered.
Forgetting Hardware Position
The position of the curtain rod or track affects the final curtain drop.
Ignoring Curtain Fullness
Curtains normally require additional fabric width to create attractive folds.
Using Inconsistent Measurements
Mixing centimetres, inches, and other units can create costly errors.
Measuring Once
Rechecking measurements can help identify mistakes before curtains are manufactured.
Why Professional Curtain Measurement Is Better
Professional measurement is especially valuable for large, complex, or high-value projects.
Kalus Top Curtains can assess the complete window area and determine:
- Appropriate curtain width
- Finished curtain drop
- Hardware position
- Track or rod requirements
- Curtain stacking space
- Layered curtain configuration
- Fabric requirements
This reduces the risk of ordering curtains that do not fit correctly.
Curtain Measurement for Contractors and Interior Designers
Large developments may contain dozens or hundreds of windows.
Contractors and interior designers require consistent measurements across multiple rooms and units to ensure uniform curtain installation.
Kalus Top Curtains can provide professional measurement services for:
- New homes
- Apartments
- Villas
- Hotels
- Offices
- Residential developments
- Commercial properties
- Hospitality projects
Professional measurement at the planning stage can also help coordinate curtain hardware with electrical, ceiling, and interior finishing requirements.
Why Choose Kalus Top Curtains?

Kalus Top Curtains provides complete window treatment solutions from initial measurement through to final installation.
Our services include:
- Professional window measurement
- Custom curtain manufacturing
- Premium curtain fabrics
- Sheer curtains
- Blackout curtains
- Curtain rods
- Curtain tracks
- Double curtain tracks
- Motorized curtain systems
- Curtain installation
- Residential projects
- Commercial projects
- Hospitality projects
- Nationwide service across Kenya
Our experienced team ensures measurements, fabrics, hardware, and installation work together to achieve a professional result.
Get Your Curtains Professionally Measured
Correct measurements are the starting point for beautiful custom curtains. From a standard bedroom window to a large floor-to-ceiling glass wall, careful measurement ensures your curtains fit properly and operate as intended.
If you are preparing to order custom curtains, Kalus Top Curtains can handle the entire process—from professional measurements and fabric selection to custom manufacturing and installation.
For homeowners, contractors, interior designers, and property developers searching for reliable curtain measurement services across Kenya, Kalus Top Curtains provides a complete solution designed around the exact requirements of each project.
Measure the required curtain width and the vertical distance from the planned rod or track position to the desired bottom of the curtain. For complex windows, professional measurement is recommended.
The curtain measurements should account for the position and length of the rod or track because these determine both the required curtain width and finished drop.
The required width depends on the desired fullness, curtain heading, fabric, and installation system. A curtain professional can calculate the appropriate fabric requirement for the selected style.
Yes. Kalus Top Curtains provides professional window measurement services for custom curtains and other window treatments across Kenya.
Yes. Professional measurement is available for large windows, sliding doors, bay windows, floor-to-ceiling glass, layered curtain systems, and commercial projects.
Visit our online curtain store by clicking here
Click here to view our facebook page
Click here to view our instagram profile


