Artificial Grass Shockpad Underlay

Quick Overview

Artificial Grass Shockpad Underlay For Decking and Concrete Bases


Availability: Currently 924 Rolls in Stock

Delivery Prices & Timescale

Can be delivered Wednesday, 29 March using our Overnight Service if ordered at anytime during the next 7 hours and 25 minutes!

Artificial Grass Shockpad Underlay

Description & Information

Great for use on decking boards and patios.

Designed to be laid directly beneath any of our artificial grass products to produce a softer feel under foot.

On decking boards and patios it will reduce the chance of lines showing through on the surface of grass.

Can be installed loose laid, stapled, nailed or pegged to all prepared bases of concrete, wood, sand or soil.

Price: £2.00m2 (£28.80/roll)



  Colour: Charcoal Grey
  Weight: 35kg/m3
  Size: 1.2m x 12m
  Thickness: 6-7mm
  Recyclable: 100%

Uses & Benefits

  Child & Pet friendly
  Absorbs minor floor imperfections
  Non Toxic & odorless
  Laid on concrete or Decking
  Roofs & balconies

Product Specifications

Model Astrostep Shockpad Underlay
Price £28.80
Size 1.2m x 12m
Coverage 14.4m2

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Ask us a Question About this Product

Ask a Question

  • Do you sell this by the metre?

    By the roll only I'm afraid.  However you can return any unused full rolls to us for a refund.

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  • Would be ok to build a few of these on top of each other to give a say 4*7mm = 28m underlay?

    We know of installers that will double layer the underlay.  However we would suggest 2 as a maximum.  Ideally laid at 90 degrees to each other.

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  • I intend to lay the grass on underlay which I plan to staple to decking . Will the decking lines /pattern still show through and secondly how do I fix the grass to the underlay ? Thank you .

    All our artificial grass ranges are designed to keep flat on their own.  They will not curl up at the edges or wrinkle in the middle.  The only fixing that is required is on edges that are exposed to the wind.  The grass will sit on stapled underlay without .

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  • Hi my artificial grass is on concrete and feels very hard,will the underlay make it feel softer to walk on.

    Our Astrostep underlay is 6mm thick so will give a degree of extra cushioning. Some people use a double layer to give 12mm


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  • I plan to put astro turf down, but my garden area is slabbed should I put sand down first and then the mat ?

    For slabbed, concrete, patio areas the grass can go directly on top.


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  • I will be using this underlay doubled up into a concrete base. Would I need to make drainage holes ? Thanks

    The underlay does not need drain holes when laid on top of concrete.

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  • Does this also act as a weed membrane when installed over soil?

    es the underlay would act as a weed membrane, however its mostly used on concrete or decking areas.  A cheaper alternative would be our rolls or weed fabric.  Would save you around 50% of the cost.

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  • Have just bought your underlay, which side down do I lay it please?

    There is no up or down side so either way will be fine.

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  • When I put the shock underlay down do I need to put drain holes in it, or does it allow water to drain through it without me having to add holes?

    On a flat surface you will need to add drainage holes.  Decking will need drainage holes made every 6" or so between the board joints.  Patio areas on slight fall/slope will be fine without holes.

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  • I have a sand base, is it a good practice to just lay the artificial grass without the shockpad underlay?

    Yes, underlay is only usually used on decking or uneven concrete.  You may consider a layer of weed fabric as a double protection against weeds.

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  • When i have laid down my underlay on my decking and puy in drain holes do i need any fixing tape or glue ?

    Then can I just screw down atificial grass
    Some people staple the artificial grass underlay all over to the decking, some just loose lay the grass over the top, using the weight of the fake grass to hold it in place. No right or wrong way, just see works best for you.

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