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 should be measured with a 2-3 meter spirit level and a feeler gauge. It will be up to standard if the gap is below 2mm.
3) Cleanliness: Subfloors should be free of debris, paint,dust.
Note:
1)Rough subfloors shall be constructed with extra strength self-leveling cement after they get cleaned up.
2)Maintenance time should be more than 28 days for a newly foundation. It shall be extension properly in wintertime. Details please refer to the requirements of National secondary road.
2.Pre-paving
Allow the material to sit in the area to be installed for a minimum of 24 hours prior to cutting and installation, then pre-cut the material for the first time according to the site size.
Ⅱ.INSTALLATION
1.Adhesive Type
It’s recommended to use the two-component polyurethane adhesive. It’s mandatory to verify the type of adhesive before the application. (When the performance of the adhesive can not be identified, sample taken for adhesive bond tests should be conducted.)
2.Adhesive Mixing
Mix the adhesive evenly with the S shape mixer, in strict accordance with proportions as per the manufacturer’s instructions.
3.Adhesive Spreading
1) Precoating on subfloors for permeation treatment should be done before the adhesive is spread.
2) Spread the adhesive in the areas pre-coated, in accordance with the installation direction and position of the rubber rolls.
3) Areas with adhesive spread must be 5CM bigger than the areas to be covered by the rubber rolls. And full glue down is mandatory.
4) After the adhesive is spread, lay the rubber rolls into the wet adhesive when viscosity works as perits properties.
4.Laying
1) The first roll must be straight, otherwise it will affect the paving of the remaining rolls.
2) The side joints between the rolls must be glued and connected tightly together in a single direction.
3) Press the side joints with a cork board to make them flat and tight.
4) Roll the floor with a 30-50KG roller after 30 minutes. Roll 5-8 times within every 30 minutes.
5) Keep the roll surface clean. Do not allow the adhesive to tarnish the rolls surface. If the adhesive drops on the surface by accident, care should be taken NOT to wipe off the wet adhesive with anything before it’s cured. Scrape the cured adhesive using a utility knife. Do not sand. Do not use any solvent. (Using solvents may cause distortion. )
Ⅲ.EPDM Surface Installation in later period
It is suggested to fully seal the underlay surface with suitable material after finished underlay installation, which can avoid the affect by rain for further installation and
prevent the EPDM surface from damage by moisture from subfloor.
1.Make sure the underlay surface is clean and dry before paving EPDM surface.
2.Note: Take care NOT to pour any oil or solvent on the installed underlay surface, or it will impact the paving of EPDM surface.
