Key Learning outcomes
- Types of Underlay
- Manufacturing Methods
- Raw Materials
- Insulation Properties
- Acoustic Properties
- Environmental Credentials
This CPD article aims to provide an overview to the various types of carpet underlay available on the market today. The article aims to inform the reader as to their construction, attributes and manufacturing methodology to assist in the specification and future use of such materials in construction and refurbishment projects.
Carpet underlay performs numerous functions and different products can offer varying attributes which may lead to their specification in certain environments. For example, an underlay with strong acoustic attenuation properties could have poor thermal conductivity, rendering it good for multi-level communal living but poor for underfloor heating.
All underlays however are used to enhance comfort and performance of the environment in which they are being used and ultimately to prolong the life of the carpet under which they are fitted.
Underlays can be tested to several flammability standards including BS 4790 and EN13501. Although not a statutory requirement, commercial textile flooring installations using underlay should specify products that comply with BS5808 and the performance requirements of the Heavy Contract classification.
This article will follow a format for the underlay types which discusses
- Raw materials
- Manufacturing methods
- Insulation Properties
- Acoustic properties
- Environmental credentials
- Applications