Berson Rubber Roll (Underlay) Outdoor Installation Manual Ⅰ.PREPARATION 1.Subfloor Requirements 1) Hardness: No hollowing. No sand accumulation, sand loose, cracking while rubbing. 2) Flatness: Flatness shoul...
Berson Rubber Roll (EPDM Surface) Outdoor Installation Manual Ⅰ. PREPARATION 1.Subfloor Requirements 1) Hardness: No hollowing. No sand accumulation, sand loose, cracking while rubbing. ...