Seaming SYNLawn

Seaming Multiple Edges

To seam multiple edges together you will need urethane seaming cloth, 3M 1099 Rubber and Gasket adhesive, a trowel and landscape nails. It is recommended that you have at least two people working together when seaming the turf. Whenever possible, your seams should go the same direction as the stitching rows of the fibers. Look on the backside of the turf to determine the stitch row direction. End seams are possible (seams going against the stitching rows) but discouraged. Before cutting the turf to make your seams, always make sure the grain of the fibers is facing the same direction on all sections of turf.

Before starting the seams, be sure to secure the turf with landscape nails to keep it from moving during the process. You can secure the turf down the seaming edge about 1 foot from the seam. Start with clean cuts down one of the stitching rows on each section of turf. Be sure to trim off the manufactured edge of backing material before attempting the seam. When seaming multiple sections, check and double-check all seams making sure there is no overlap. Any overlapping of the pieces will cause a crowning effect or bulge in the seam. Flip over each side of the turf about 10-12 inches to allow for positioning of the seaming cloth. It is a good idea to pin these flaps back with landscape nails to keep them out of the way during this part of the process. Starting with the longest seam, roll out the seaming cloth down the length of the turf extending the cloth approximately 6 inches past the edge. Pin the large section with landscape nails before proceeding to the next seam. Cut the smaller section of seaming cloth, position and secure with nails.

Pour an adequate amount of adhesive in a circular motion down the seaming cloth. Keep moving as you pour and try not to spill any excess onto the base. Use a trowel or a scrap piece of folded turf to spread the adhesive on the cloth. You will want a consistent eighth of an inch of adhesive on top of the seaming cloth. In cooler climates wait about 5-10 minutes to allow the adhesive to set before setting the turf into position. When the adhesive is ready bring together the large section slowly. With a partner holding one end, start bringing the pieces together checking the fit as you go. As you get to the other seams, have another person assist you in bringing the other flaps of turf together. After the seam is in place, walk along the seam pressing down with each step to ensure a tight bond.

The seam will need 4-8 hours to properly cure. Wait until the seams are cured before attempting any final shaping or stretching.

• Position the long piece of seaming cloth before proceeding with the smaller piece.
• Pour adhesive down seaming cloth and spread with trowel.
• With a partner, start joining the large sections slowly.
• With the assistance of another person, bring all sections together in secession.

Trimming Seam Edges

After seaming two sections of turf together you may need to do some additional trimming to hide the appearance of the seam. This is done with heavy-duty shears and a spiked carpet roller.

Before working the seam, be sure the adhesive has had adequate time to cure. Start by brushing the fibers over the seam with your hand or carpet roller to expose any tall fibers or excess material. Trim excess with heavy-duty shears. Following with the spiked carpet roller, roll over the seam to blend the fibers together. Continue trimming and rolling until the seam has disappeared. Do not trim too much of the fiber material as this will cause the seam to appear uneven or patchy.

• Trim excess material with shears followed by spiked carpet roller.
• Continue trimming and rolling until the seam is well blended.