Performance Artificial Grass Underlay

0% Finance
Thickness 10mm
Regular price was: £11.99 / m2 inc VAT £4.16 ex VAT £4.99 / m2 inc VAT

Performance Artificial Grass Underlay

In Stock and Ready to Ship

Regular price was: £11.99 / m2 inc VAT £4.16 ex VAT £4.99 / m2 inc VAT

Get an instant quote for Artificial Grass using your exact measurements. Our advanced calculator will work out exactly which rolls of grass you require, and if necessary how many joins you'll need. Simply enter your measurements, select a grass, review your quote and checkout.

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Thickness 10mm

About Performance Artificial Grass Underlay


10mm performance foam underlay for artificial grass, covering 1m2 per roll (1.37m x 0.73m)


Please Note: this performance underlay range is designed for indoor use only.


Get the Most Out of Your Grass 🏆 

Constructed from recycled foam chunks, our performance fake grass underlay is perfect for indoor use with your new turf, providing an extra layer of spongy comfort.

Installing this underlay helps hide any undulations in the existing surface, for a smooth, flawless finish in your home.


Added Safety and Comfort 👨‍👩‍👧‍👦

With a high-density layer that lies underneath your artificial grass, our underlay absorbs impact and helps to create a safer environment for family use. Run around on your grass with less impact on your joints and added protection against injury from falls.


Key Features

  • ↕️ 10mm Thickness - Added comfort for a luxury finish
  • ♻️ Recycled Materials - Compacted foam underlay
  • 👨‍👩‍👧‍👦 Family-Friendly - Added padding for play
  • ⚡️ High-Density - Softness and impact absorption




1m2 Roll - 1.37m x 0.73m



Do I Need Underlay for Artificial Grass? 🤔

While it is not essential for a typical fake grass garden to have underlay installed, many homeowners find that a soft, cushioned surface provides a more luxurious feel when using artificial grass for indoor purposes. 

For a long-lasting finish, installing the right underlay is also key to maximising the lifespan of your artificial turf. Grass Warehouse underlay is tried and tested with artificial turf for maximum performance, and is easy to install.



Artificial grass can be installed on a variety of different surfaces. It's perfect for patios, verandas, and balconies, in addition to traditional lawns or sports areas.


Fitting An Artificial Lawn

1. Remove your existing lawn and apply weed-killer to the whole area.

2. Edge the area neatly with wood or timber and secure it firmly into the soil.

3. Compact the soil (you might need a whacker or vibrating plate) and add a 50-75mm hardcore layer. If you need extra drainage, use limestone chip instead.

4. Add 15mm of sharp sand or dust granite before compacting again.

5. Pop a weed membrane over the compacted area and attach it to your wooded border.

6. Lay your new artificial grass over the top and trim to fit. Use galvanised nails to fix it to the timber.

7. Brush your grass to raise the pile, so it looks like the real thing.

8. Stand back and admire your handy work!


Other Surfaces 

If your artificial grass is being laid on a harder surface, like concrete or tarmac, clear away any rubbish first so the area is flat before you start. Then, stretch the lawn out and roller it to get rid of any ripples.

Once that’s done, use a specialist adhesive to stick it down. We’d also recommend brushing kiln-dried sand (8kgs per m2) into the pile before you start using it.

If you’re not confident about fitting your artificial grass yourself, you should be able to find local fitters to help you with the installation process. If you have any further questions, get in touch with our team and we'll get back to you right away.


Like a natural grass lawn, your new artificial lawn needs care and attention to keep it looking its best. Of course, it doesn’t need mowing or edging but there are still things you should do regularly to look after it.


Maintaining Your Artificial Grass  

✓ Remove stray leaves and garden rubbish with a leaf blower or by brushing/raking the fibres gently

Keep any surrounding bushes and trees well-trimmed, so they don’t drop too much

Apply weed-killer twice a year, as wild flowers and plants can sometimes poke through the membrane

If you’ve got pets, clean up after them straightaway and use artificial turf spray to get rid of any urine


Any serious spills should be mopped up with a cloth or towel first, followed by a good scrub with washing up liquid and warm water. Use a synthetic brush or cloth on the individual fibres affected and rinse off with cold water.

If the stains dries before you get to it, don’t worry. It can be scraped off with a plastic knife or something similar. An old toothbrush will also do the job.

Your artificial lawn will survive the harshest winter as ice and snow will simply drain away once melted, while hot sunshine won’t fade or discolour the fibres.

Delivery & Returns

Free Standard UK Delivery on Orders £199+

For a full breakdown of areas, schedules, and applicable charges, visit our delivery information page ➡️


Standard estimated delivery times for 4m and 5m grass is 2-5 working days.

Delivery times for coloured artificial grass and putting grass is 10 - 20 working days.

Standard delivery for orders under £199 is £19.99 (inc VAT).

Standard delivery for small orders under £99 is £39.99 (inc VAT).


60-Day Return Policy

If you change your mind and wish to return your product, we offer a 60-day return policy, minus applicable cutting fees and collection charges.

For more information, visit our returns page ➡️

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