Smartlay Aqua Stop Underlay

Smartlay Aqua Stop Underlay



2mm thick Closed-cell Expanded-Polyethylene (EPE) Foam has been specially formulated to optimum density for the flexible strength and stability needed in a high quality Underlay to provide a stable and long-lasting floating flooring installation.


Heavy Duty Thermoplastic Polymer which won’t easily tear or puncture. The Polyethylene film is 0.2mm thick (200Um gauge) and commonly called ‘builders plastic’. It offers exceptional moisture protection by keeping dampness and vapours away from the timber or laminate flooring.

Step 1


After ensuring that the subfloor is smooth and level (to within installation specs) as well as clean and dry; roll out SMARTLAY Aquastop Underlay over the installation area. For best moisture protection, the ends and sides should be run right up against all perimeter walls and surfaces.

Step 2


You will notice that each roll of SMARTLAY Aquastop Underlay has a 100mm Overlap; install each seam so the white foam meet neatly toghether.

Important note: Make sure that only the black film is overlaping and not the whte foam.

Step 3


Use an appropriate plastic tape to seal all joins and seams so as to ensure that moisture cannot pass through any of the joins.

Step 4


Once SMARTLAY Aquastop Underlay has been correctly and fully installed, proceed with the installation of the flooring in accordance with the manufacturer’s instructions.

On completion, trim any exess SMARTLAY Aquastop Underlay from the perimeter walls and surfaces.

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