Frequently asked questions

1. Why do you need to buy underlay?

Every new carpet deserves a new underlay!

It is the underlay beneath the carpet that adds to your comfort underfoot.

It is far better to buy a slightly less expensive carpet and have it installed on a better quality underlay than have the finest quality carpet fitted on a poor quality underlay.

The right choice of underlay is crucial to avoid premature wear or flattening of the carpet.

2. Why buy Carpenter Underlay?

Our products are guaranteed for the lifetime of the carpet.

They protect your carpet from premature wear.

They keep the heat in and the sound out (not suitable for underfloor heating).

All our products are made from recycled material and are recyclable at the end of their life.

Carpenter manufactures environmentally responsible products in the UK.

Our polyurethane underlays outperform many traditional rubber underlays.

All our products are flame retardant and meet stringent British Standards (BS4790) & (BS5808).

Carpenter underlays are permeable and may be laid over a wood block floor.

3. What is polyurethane underlay?

Polyurethane underlay is made from granulated foam which is compressed and thermally bonded together.

4. What sizes are the rolls of underlay?

All our products come in 15m² size rolls.

5. Does Carpenter underlay reduce noise between floors?

All of our underlays have excellent acoustic properties, thereby keeping noise levels through floors to a minimum. Please refer to our specification sheets for each product’s decibel rating.

6. Can I use Carpenter underlay for underfloor heating?

Yes, Extrastep is suitable for underfloor heating.

7. What advantages does PU underlay have over rubber underlay?

Comfort and performance! PU underlay recovers to 90-95% of its original state when pressure is removed from above, whereas rubber recovers to 60-65% of its original state.

PU is made from recycled product and is fully recyclable at the end of its life. The rolls are substantially lighter than rubber, so easier to lift and carry.

8. Why are there different densities for different products?

The denser the underlay the better the performance and the more support a carpet is given.

The heavier the density the more the carpet “bounces back” to its original state after pressure is applied.

9. Why do you have different thicknesses in underlay?

The thickness of the underlay gives the feeling of comfort underfoot.

The thicker the underlay the more luxurious it feels to walk on.

10. What is the difference between domestic underlay and contract underlay?

Contract underlay is ideally suited for offices, hotels, shops, care homes and all commercial areas which experience heavy foot traffic. Contract underlay can however be used in the home if a more hard wearing underlay is required.

Domestic underlay is suited for the home where less heavy foot traffic is experienced and a more luxurious feel underfoot is needed. Try walking on one of our samples with carpet on top, it is personal choice as to which underlay feels the best for you.

11. What does double stick mean?

Double stick is mainly used in contract applications where the underlay is adhered to the floor and then in turn stuck to the carpet to prevent movement over large, heavy traffic areas.

12. What does IMO mean?

International Maritime Organisation. This is a worldwide quality standard for the shipping industry. Carpenter products which achieve this standard have exceptionally high flame retardant properties.

13. Does Carpenter underlay contain recycled material when produced?

Yes, Carpenter underlay is made from approximately 75% recycled polyurethane foam.

14. Are Carpenter underlays recyclable?

Yes, all Carpenter underlays are fully recyclable at the end of their life.

15. What underlay should I use for my home?

BS5808 Luxury Use is the highest rating for domestic locations, Heavy Contract Use is the highest rating for contract locations. Use these benchmarks when choosing the best underlay you can afford.

16. Where is Carpenter underlay made?

All Carpenter underlay is made at our UK Headquarters in Glossop, Derbyshire.

17. Does Carpenter underlay conform to British Standards?

Yes. All our products meet stringent British Standards (BS5808).

18. Is Carpenter underlay flame retardant?

Yes. All our products are flame retardant.

19. Are Carpenter products suitable for stairs?

Yes. All Carpenter underlays can be fitted on stairs. It is recommended however that a heavier density underlay is used in this area.