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Jointing Artificial Grass – Quick How To Guide
Artificial Grass How To Guides Top Tips

Jointing Artificial Grass – Quick How To Guide

March 10th 2022

If your project requires two rolls of grass to be joined together, then the below steps and tips should help you achieve a seamless seam.

Step One 

Ensure that the grass piles on both sections are running in the same direction – this is imperative. Fold back both sections by about 300mm so that the underside is face up. 

Step Two 

On both sections, using a sharp blade, cut between the rows of stitching, at least two to three stitches from the edge. Doing so, will give you an edge of upright tufts of grass, rather than tufts which splay out at the edges – this is important to achieving a seamless joint.  

Step Three 

Fold both sections flat and bring together until you are satisfied with how the joint looks. 

You want the gap between the two cut edges to be the same width as the rows of stitches on the rest of the grass for the seam to go unnoticed – e.g 3/8” to 5/16” (the grass’s gauge). 

Step Four 

Fold each side back again by roughly 300mm to reveal the underside, as you did in Step One. 

 Step Five 

Roll the Jointing Tape along the entire length so that it sits flat directly on top of the weed membrane (or directly on top of the laying course if deciding not to use a membrane), central to where the joint will be. Green, shiny side down, white fabric face up. Fix the tape in to place at both ends with a nail in each corner to prevent it from moving. 

Step Six 

Apply the Green Bonding Adhesive to the centre of the tape using a cartridge gun in a zig-zag pattern at a rate of 3 linear metres per tube.  

Step Seven 

Using a trowel or similar, thinly spread the adhesive down the centre.  

Step Eight 

Carefully fold down the two sections of grass, bringing them together slowly to ensure that no grass gets tucked under the edges. Patience and precision at this stage will help achieve the best result. Press down firmly so that contact is made with the adhesive. 

Step Nine  

Once you are happy with your joint, add bags of sand, or wide timber boards with weight on top to allow the adhesive to make full contact and bond sufficiently. Leave this in place for the time specified on the adhesive based on the temperature – typically two to four hours for our Great British weather. 

Step Ten 

Once cured, you can then complete the installation – cutting and fixing in place. 

Summary - Top Tips to achieve a seamless seam. 

  • It is imperative that the two pieces of grass are running in the same direction.  
  • When cutting each piece, make sure to cut at least two or three stitch rows from the edge to reveal neat, upright tufts which will marry up subtly.  
  • Replace your blade regularly to ensure sharpness for a clean accurate cut. 
  • Look at the reverse of your grass to see the spacing between the stitches. You want to achieve this same gap between the two adjoining edges when brought together. 
  • Be patient and precise when folding the two pieces in to the adhesive – treat like a zip – simultaneously marrying up and ensuring no blades of grass get trapped underneath.