Overlay
CHOOSE THE MOST SUSTAINABLE BIO-BASED CARPET UNDERLAY

Why Choose Renu

Renu Underlay is the most sustainable bio-based carpet underlay. It is 100% recyclable and made from 98% recycled materials. Choose an ethically sourced underlay that is guaranteed to last the life of your carpet, with a thermal insulation rating that reduces emissions. Every roll purchased will help plant a tree.

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Choose Sustainability

Made with a sugar cane bio-based film

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Choose Comfort

Improves softness of the carpet

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Choose Warmth

Retains more heat in the winter

dark blue icon describing peace and quiet with house blocking noises

Choose Peace & Quiet

Reduces noise transfer

Renu underlay diagram

+ show specs

Roll Length 8 m

Roll Width 1.8 m

11mm Thickness

140 kg/m3

Density

25dB

Acoustic
Performance

R 0.24

Thermal
Insulation

Carbon negative bio based film - we use a bio-based film made from responsibly sourced sugar cane on the face of the underlay. The sugar cane actively captures CO2 from the atmosphere, while at the same time releasing oxygen - making this material not just green, but proactively green
every 1 tonne of our new bio-based film manufactured means that 3.09 tonnes of CO2 has been captured from our atmosphere
sustainable packaging - our packaging is made from 100% recycled plastic
Renu roll illustration-01
R0.24 thermal insulation - great insulating properties keeps your room warm and saves energy
25DB - acoustic performance for peace and quiet
Comfort guaranteed - improves comfort for a soft underfoot feeling
Renu roll illustration-01
Carbon negative bio based film - we use a bio-based film made from responsibly sourced sugar cane on the face of the underlay. The sugar cane actively captures CO2 from the atmosphere, while at the same time releasing oxygen - making this material not just green, but proactively green
every 1 tonne of our new bio-based film manufactured means that 3.09 tonnes of CO2 has been captured from our atmosphere
sustainable packaging - our packaging is made from 100% recycled plastic
R0.24 thermal insulation - great insulating properties keeps your room warm and saves energy
Comfort guaranteed - improves comfort for a soft underfoot feeling
25DB - acoustic performance for peace and quiet

Sustainable Flooring that Leaves a Lighter Footprint

EnviroFirst represents how much we care about our planet. We are committed to protecting the environment by eliminating waste and pollution through recycling and sustainable manufacturing.

Dunlop envirofirst logo

Every Roll Purchased Helps Us Plant a Tree

Our commitment to sustainability goes further than how we manufacture our underlay. Purchase a roll of Renu, and we'll give back to the environment by planting a tree.

One tree planted logo with plant sprouting from ground
Density
Why is density important?

The density represents how much foam is packed into each cubic metre of underlay. A high-value density will indicate a better quality underlay (more foam, less air!). As a rule, the higher these numbers, the more luxurious and supportive the carpet underlay will feel. The higher the density, the longer the life of the carpet.

Acoustic Performance
Does underlay help with noise transfer?

An acoustic or sound rating is used to judge and limit how noise travels within an environment. A Dunlop Underlay can help reduce noise by up to 62%.

Your Dunlop underlay is graded by the AAAC (Association of Australasian Acoustical Consultants) star ratings:
= less than 65dB
= less than 55 dB
= less than 50 dB
= less than 45 dB
= less than 40 dB

Thermal Insulation
What is an underlay thermal rating?

Thermal insulation is measured by an 'R-value' which stands for resistance. Resistance is measured by the amount of heat that passes through a product at a particular time and thickness. The higher the R-value, the greater the insulating power. A Dunlop Underlay can act as a barrier between the subfloor and your hard flooring or carpet. A good thermal-resistant underlay will help keep your energy bills down!

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Density
Acoustic Performance
Thermal Insulation
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Not sure which carpet underlay to choose from?

We’ll send you some samples for FREE, so you can feel the difference for yourself!

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