Installation Guide

■ Seal gaps between DELTA®-FL and any posts or penetrations with low expansion spray foam
to prevent the passage of water vapor into living area.
■ Access to floor drains and clean-outs must be maintained. Cut DELTA®-FL around drains or
clean-outs. Seal DELTA®-FL with low expansion spray foam (see Detail 4).
Carpet, Vinyl, Hardwood, or Other Floor Covering Requiring Rigid Substrate
■ Place 4’ x 8’ sheets of minimum 7/16” OSB/ Plywood sheets over DELTA®-FL.
■ Pre-drill the wood sheets and the concrete according to the fastening pattern (see Detail 4).
■ Apply a small amount of silicone caulking on the thread of the fasteners and into
the pre-drilled hole of the wood sheets prior to installing the Tapcon® screws.
■ Install 8 (eight) Tapcon® screws per sheet (see Detail 5).
■ Inspect the wood sheets for areas with bounce, tapping, or squeaks. Add additional fasteners
where necessary.
■ Some hardwood floors are nailed to the substrate. When these types of hardwood floors
are installed, ensure that the fasteners do not penetrate the DELTA®-FL. Note that some
hardwood floors may not be recommended for below grade use. Check with your flooring
manufacturer.
■ Install final floor as per manufacturer’s recommendations.
Floating Laminate and Engineered Wood-Flooring Installations
■ Place recommended underlayment foam over DELTA®-FL as indicated by the laminate/
engineered wood floor manufacturer.
■ Install the laminate/engineered wood flooring system as recommended by
manufacturer (see Detail 6).
General Notes
■ Transitions: Consider any transitions from one finished flooring system to another (i.e.
laminate to carpet). The elevation difference may affect your final installation.
■ Material allowance: Always allow 10% to 15% extra material to accommodate doorways,
cutouts and waste.
■ Always follow local Building Code Requirements whenever building/renovating.
Added Warmth and Comfort
■ DELTA®-FL acts as a vapor barrier. An additional vapor barrier is not required on the concrete
floor.
■ Extruded or expanded rigid insulation boards can be installed over the DELTA®-FL prior to the
installation of the finished flooring.
Limitations
■ Product is not desinged for pernament UV exposure. Always cover as soon as possible.
Load Considerations
■ DELTA®-FL features high compressive strength. Typical household items like refrigerators,
billiards tables and furniture can be placed onto the finished flooring without compromising
the DELTA®-FL.
Disposal of Waste
■ DELTA®-FL is made from environmentally friendly HDPE.
■ Waste can be recycled where facilities allow.
For technical support, call our Technical Support Team at 1-888-433-5824 extension 326, or visit
www.dorken.com
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The information printed in this brochure
reects product information and
specications at the date of printing.
The manufacturer reserves the right to
make changes when necessary. All rights
reserved.
DELTA
®
-branded quality products
manufactured by Cosella-Dörken.
CD 06/20/17 10
DELTA® is a registered trademark of Ewald Dörken AG, Herdecke, Germany
Dörken Systems Inc.
4655 Delta Way
Beamsville, Ontario
L0R 1B4
1-[phone]
Fax: [phone]
[e-mail]
www.dorken.com
A DÖRKENGROUP company