Best Flooring Underlay — Felt (2026)
1 flooring underlay matching material “Felt”, hand-picked from UK Amazon listings.
Not sure which one to pick? Read our Best Flooring Underlay UK (2026) guide.
Felt flooring underlay provides a comfortable and supportive base for your carpets or rugs, significantly enhancing the feel of your floor. Made from dense, natural or synthetic felt fibres, it's designed to absorb impact, reduce noise transmission, and protect your carpet from wear and tear. This type of underlay is particularly well-suited for rooms with hard flooring like wood or laminate, creating a warmer, quieter, and more luxurious surface beneath your chosen floor covering.
Felt underlay’s inherent resilience makes it an excellent choice for high-traffic areas such as hallways and living rooms. It offers superior cushioning compared to foam options, providing a noticeably softer step-on feel. Furthermore, felt's natural fibres are breathable, helping to regulate humidity levels beneath your carpet – a key factor in maintaining healthy indoor air quality.
When selecting felt flooring underlay, consider the density of the material; denser felt generally provides better insulation and soundproofing. Amazon offers a wide range of felt underlays from various manufacturers, each with different thicknesses and fibre compositions to suit specific room requirements and budget considerations. Ensure you choose an underlay with appropriate thickness for your carpet pile height to maximise performance.
#1 Pick
Mohawk Home Carpet Pad, 100% Felt Protective Cushion, 1.5m x 2.1m, Safe for All Floors- Felt
- 1.5m x 2.1m
£43.24
Pros
- 100% felt construction is safe to use on hardwood, laminate and tile
- Huge review base from a major flooring brand
- Adds noticeable cushioning and warmth under rugs
Cons
- Needs trimming to size for irregular room shapes
FAQ
What’s the typical thickness range for felt floor underlay?+
Felt floor underlays are available in thicknesses ranging from 8mm to 20mm. Thicker underlays generally offer better soundproofing and cushioning, so consider your room's needs when selecting a thickness.
Does the material of the felt affect its performance?+
Yes, synthetic felt underlay tends to be more durable and resistant to moisture compared to natural wool felt. Wool felt offers excellent thermal insulation but may require more maintenance due to its absorbency.
How does felt underlay impact soundproofing?+
Felt’s dense fibres effectively absorb sound vibrations, significantly reducing noise transmission between floors. A thicker felt underlay will typically provide a greater degree of sound reduction compared to a thinner one.
What is the best felt underlay for laminate flooring?+
A high-density felt underlay with a suitable acoustic rating is ideal for laminate flooring. It provides necessary cushioning and helps prevent damage caused by impact or movement, extending the lifespan of your floor covering.
Should I choose a glued or rolled felt underlay?+
Both glued and rolled felt underlays have their advantages. Rolled underlay is easier to install and allows for adjustments during fitting, while glued underlay provides a more permanent bond and potentially better soundproofing once fully adhered.
How does felt underlay compare to foam underlay?+
Felt underlay generally offers superior cushioning and impact absorption compared to foam. Foam tends to compact over time, losing its effectiveness, whereas felt retains its resilience for longer.
What is a ‘sound reduction rating’ (SR) and why should I consider it?+
A sound reduction rating indicates the underlay's ability to reduce noise transmission. A higher SR value signifies greater soundproofing performance; look for an underlay with a rating appropriate for your needs, particularly in noisy environments.
Can felt underlay be cut to size?+
Yes, most felt floor underlays are easily cut to fit your room dimensions using a sharp utility knife or scissors. Ensure you use a cutting mat to protect your work surface and make precise cuts.
How does felt underlay affect carpet pile height?+
Felt underlay provides sufficient support for most carpet pile heights, though thicker carpets may benefit from an even denser underlay to prevent excessive compression. Check the manufacturer's recommendations for optimal compatibility.
What is the typical lifespan of a felt floor underlay?+
With proper installation and maintenance, a good quality felt floor underlay can last for 10-20 years, depending on usage and environmental conditions. Regular vacuuming helps maintain its effectiveness and prolongs its life.