A felt mattress underlay is a protective layer placed between a mattress and its supporting bed base. It helps separate contact surfaces, reduce direct friction and protect the underside of the mattress from contact with bed boards or frames.
Felt underlays can be used in student dormitories, rental accommodation and residential bedrooms.
When selecting a suitable felt underlay, consider four factors: size, thickness, edge finishing and bed base construction.
1. What Is a Felt Mattress Underlay Used For?
A polyester felt mattress underlay can serve several practical purposes:
- Surface protection: Creates a separating layer between the mattress and bed base.
- Reduced friction: Helps minimize direct rubbing between contact surfaces.
- Flexible installation: Can be cut to accommodate different bed dimensions.
- Versatile applications: Suitable for selected dormitory, residential and rental accommodation bed setups.
A felt underlay is an accessory rather than a structural support. It should not replace a mattress or a properly designed bed base.
2. How to Choose the Right Size
Bed dimensions vary between countries, institutions and manufacturers.
Common single-bed sizes include:
| Size | Typical Application |
|---|---|
| 90 × 190cm | Selected dormitory and single beds |
| 90 × 200cm | Dormitory and residential single beds |
| 100 × 200cm | Wider single beds |
| 120 × 200cm | Wide single beds |
These dimensions are examples rather than universal standards.
For accurate sizing, measure the intended installation area before ordering. Custom cutting is available for projects requiring non-standard dimensions.
3. Which Felt Thickness Should You Choose?
NOVA APEX offers felt mattress underlays in 3mm, 4mm and 5mm thickness options.
| Thickness | Characteristics | Recommended Applications |
|---|---|---|
| 3mm | Relatively thin and flexible | General dormitory and residential beds |
| 4mm | Medium thickness with a thicker separation layer | Applications requiring additional material thickness |
| 5mm | Thickest available option | Applications requiring a thicker felt layer |
A thicker underlay is not necessarily a better choice. Select the appropriate thickness according to the bed base, mattress type and installation requirements.
4. Finished Edges vs. Raw-Cut Edges
Felt mattress underlays can be supplied with different edge treatments.
Raw-Cut Edges
A simple cut-edge design suitable for standard installation and applications where additional size adjustments may be required.
Finished Edges
An additional edge-finishing process creates a neater appearance and may be preferred for projects with specific finishing requirements.
The appropriate option depends on the intended application, appearance requirements and purchasing budget.

5. Installation and Maintenance
Before installation, ensure the bed base is clean, dry and reasonably even.
Place the felt underlay flat between the bed base and mattress.
For mattresses requiring specific ventilation conditions, follow the mattress manufacturer's instructions and avoid obstructing necessary airflow.
Periodically inspect the underlay and mattress underside for moisture or dirt accumulation. Cleaning methods should follow the specifications of the actual felt material.
6. Custom Felt Mattress Underlays from NOVA APEX
NOVA APEX supplies polyester felt mattress underlays for dormitory and residential bed applications.
Available options include:
- Thickness: 3mm, 4mm and 5mm
- Size: Standard single-bed dimensions and custom cutting
- Colors: Options based on available felt color selections
- Edge Finishing: Raw-cut or finished edges
- Orders: Standard purchasing and bulk customization
For custom projects, please provide the required dimensions, thickness, color, quantity and application details.
Explore Our Felt Mattress Underlay Products
Contact NOVA APEX for product specifications and a quotation.

