A thicker mattress hides more of your headboard because it raises the sleeping surface while the headboard stays in place. If your new mattress is 8cm deeper than your old one, you will generally see 8cm less headboard, provided the base and headboard position remain unchanged.
That difference can affect more than the overall height. Lower buttons may disappear, vertical panels may look shorter, and pillows may cover decorative details that previously stood out. Before replacing either item, a few measurements will show how the finished bed will look.
Calculate the Headboard Height Above Your Mattress
The useful measurement is the distance between the top of the mattress and the top of the headboard. A headboard’s advertised height does not necessarily describe this exposed section.
For a floor-standing headboard, use:
Exposed height = headboard height from the floor − mattress surface height from the floor
To calculate the mattress surface height, add its depth to the height of the surface supporting it. Include a topper if you use one.
Here is an illustrative example, with the base and headboard unchanged:
|
Measurement |
Original mattress |
Thicker mattress |
|
Headboard height from floor |
137cm |
137cm |
|
Mattress support height from floor |
38cm |
38cm |
|
Mattress depth |
22cm |
32cm |
|
Mattress surface height from floor |
60cm |
70cm |
|
Headboard above mattress |
77cm |
67cm |
The thicker mattress removes 10cm from the exposed headboard. These figures demonstrate the calculation; they are not specifications for a particular product.
On a bed frame, measure to the slats or platform supporting the mattress. The upper edge of an upholstered side rail may sit higher, so using it can give the wrong result.
Measure Your Existing Bed Before Ordering
Start with the bed unoccupied and remove the pillows and duvet. Measure vertically from the mattress surface to the headboard’s top edge, without pressing down on the mattress.
Next, measure the current mattress depth. A straight edge laid across the top can help you measure a rounded or quilted surface more consistently.
Compare that figure with the proposed replacement:
-
Subtract the current mattress depth from the new depth.
-
Deduct that difference from the exposed headboard height.
-
Allow separately for a topper being added or removed.
For example, replacing a 24cm mattress with a 31cm model reduces the exposed section by approximately 7cm. Adding a 5cm topper would reduce it further.
When comparing Adeline Waterson mattresses, check the depth of the exact model you intend to buy. A description such as “deep” is not precise enough for planning the headboard’s proportions.

Allow for Pillows and the Way You Make the Bed
The calculation above tells you how much headboard sits above the sleeping surface. It does not tell you how much remains visible once the bed is dressed.
Upright pillows can cover a substantial central section. Large cushions may hide buttoning or borders even when plenty of upholstery remains exposed at either side.
Make the bed as you normally would, then measure from the floor to the highest pillow. Compare this with the headboard’s top edge to estimate the clear strip above your bedding.
If the same pillow arrangement moves upwards with a deeper mattress, that clear strip becomes smaller too. However, changing the pillow angle can alter the result.
Before buying a taller headboard, try laying sleeping pillows flatter or removing one row of decorative cushions. This may reveal enough of the design without replacing anything.
Notice Which Design Details Will Be Covered
A deeper mattress does not change the headboard’s width, but it reduces its visible height. The exposed section can therefore look wider and shallower.
Different patterns make this change noticeable in different ways.
Vertical channels: The Cambridge Vertical Channel Floor Standing Headboard features vertical channel detailing. As a visual consideration, covering the lower section leaves shorter lengths of the same pattern showing. Picture the exposed panel above your bedding when judging its proportions.
Button tufting: The Cheltenham Button-Tufted Floor Standing Headboard has deep button detailing. Check where the mattress and pillows would cross that pattern; hiding a lower row can change the balance of the visible design.
Borders and wings: The Ashbourne Bordered Wingback Floor Standing Headboard uses a framed wingback silhouette. Consider how much of the central panel and border you want to see above your pillows when choosing its height.
These are visual considerations rather than guarantees of how a product will appear in your room. Product photographs may use a different mattress depth, base height and bedding arrangement.
Decide Whether a Taller Headboard Is Worthwhile
Adeline Waterson’s headboard collection offers 48, 54 and 60 inch height choices. These convert to approximately 122, 137 and 152cm. Confirm the measurement reference and fittings for your selected configuration before ordering.
Moving from 48 to 54 inches adds approximately 15cm of overall height. If your mattress is becoming 10cm deeper, that taller option would leave around 5cm more headboard exposed than before, assuming both heights are measured from the floor.
The tallest option is not automatically the best choice. Check its relationship with windows, wall lights, artwork and sloping ceilings.
You can preview the outline using removable tape suitable for your wall finish. Mark the proposed top edge and mattress line, then stand in the doorway. This helps you judge the whole bed at the distance from which you usually see it.
Check Adjustment and Sitting Comfort Separately
Some headboards mounted on struts allow height adjustment, but the permitted range depends on their construction and fixings. Follow the fitting instructions rather than assuming every headboard can be raised.
A floor-standing model should remain supported as intended. Do not lift it off the floor on improvised blocks to recover visible height. Confirm any proposed adjustment with the supplier.
Also check how the bed feels when you sit up. A deeper mattress raises your seated position, bringing your shoulders and head closer to the headboard’s top edge.
If possible, test the planned sitting height with firm cushions as a temporary approximation. Use your normal reading pillow and check whether the upholstered area still sits comfortably behind you.
Frequently Asked Questions
Does every extra centimetre of mattress depth hide a centimetre of headboard?
Approximately, yes, when the base, mattress support and headboard position stay unchanged. Actual mattress depth and surface compression can cause small differences.
Will a mattress topper make my headboard look shorter?
Yes. Its added height raises the sleeping surface and bedding. Include the topper when estimating how much headboard will remain exposed.
How much headboard should show above the pillows?
There is no single ideal measurement. Leave enough visible space for the pattern you want to display, then judge the proportions from the bedroom doorway.
Can I keep my existing headboard with a deeper mattress?
Usually, provided the mattress suits the bed and the headboard remains securely fitted. Check the resulting appearance and whether it still provides a comfortable surface when sitting up.