Installation Guide

Distributed by
The Matworks Company, LLC / 11900 Old Baltimore Pike / Beltsville, MD 20705 / www.thematworks.com
taken to keep moisture from collecting on either side of the Pronto planks to prevent the growth
of mold and mildew.
Wood Subfloors
Pronto planks are suitable for installation over double layer wood subfloors that are a minimum
of 1” thick, or single layer subfloors constructed with APA rated Sturd-I-Floor panels, 23/32” or
heavier. Joist spacing should not exceed 19.2”. Set fasteners 1/32” below the subfloor surface,
sand joints smooth and fill holes and gaps wider than 1/8” wide. Install suitable underlayment
when necessary to achieve a flat or solid surface. Pronto planks can be installed over
underlayment grade or lauan plywood. Installation over oriented strand board and particle
board is not recommended since these panels presents a greater risk of sub-floor instability
and can detract from the performance of the floor. Wooden subfloors installed over a
crawlspace should have a moisture barrier installed in the crawlspace with at least 18 inches
of ground clearance.
NOTE: Avoid subfloors with excessive vertical movement or deflection. Indications of
excessive deflection are subfloor fastener release, squeaking, compromised or sectional
contours such as bowing or dipping in floors and uneven flooring material. Nail or screw
subfloor panels to secure boards with excessive vertical movement or deflection prior to
installation of the Pronto planks. If the subfloor has excessive vertical movement
(deflection) before installation of the flooring, it is likely it will do so after installation of the
flooring is complete. Our warranties DO NOT cover any problems caused by inadequate
substructures or improper installation of said substructures.
Concrete Subfloors
Pronto planks can be installed over concrete on all grade levels. The installation site must be
acclimated with HVAC in operation. The floor and room temperature, as well as flooring
materials and installation accessories, must be maintained at 65F-85F and the humidity below
65% for 48 hours prior to, during, and after pre-installation testing and installation. All substrate
preparation and testing procedures must conform to appropriate ASTM F 710, ASTM F 1869,
and ASTM F 2170. Moisture levels should not exceed 85% RH or 5 lbs. Calcium Chloride PH
should read between 8-9.
Existing Flooring
Pronto planks can be installed over a variety of finished floors including single layer resilient
sheet floor and tile, ceramic, marble and terrazzo. The surface must be in good condition and
show no signs of excessive moisture conditions.
Asbestos Warning
WARNING: EXISTING IN-PLACE RESILIENT FLOOR COVERING AND ASPHALTIC
ADHESIVES. DO NOT SAND, DRY SWEEP, DRY SCRAPE, DRILL, SAW, BEADBLAST,
OR MECHANICALLY CHIP OR PULVERIZE EXISTING RESILIENT FLOORING, BACKING,
LINING FELT, ASPHALTIC “CUTBACK” ADHESIVE, OR OTHER ADHESIVE.
These existing in-place products may contain asbestos fibers and/or crystalline silica.
Avoid creating dust. Inhalation of such dust is a cancer and respiratory tract hazard. Smoking
by individuals exposed to asbestos fibers greatly increases the risk of serious bodily harm.
Unless positively certain that the existing in-place product is a non-asbestos-containing
material, you must presume it contains asbestos. Regulations may require that the material be
tested to determine asbestos content and may govern removal and disposal of material.