Infloor Infloorboard - Manual (Page 15)

Infloorboard™ Application & Installation Manual
15
INST
ALLA
TION
OVERVIEW OF FLOOR SURFACE REQUIREMENTS:
Note: See also the specific application drawings and notes for installing
Infloorboard™, on pages that follow in this manual.
SUBFLOOR REQUIREMENTS GENERAL:
The surface of the subfloor must be flat: The requirement for flatness is defined
as the maximum difference between two adjacent high points and the intermedi-
ate low point. The maximum acceptable difference in level is 3/16 of an inch in
a 10-ft. radius.
Fill excessive voids or low areas using a leveling compound: Allow the leveling
compound to dry thoroughly before beginning the installation. Check with the
leveling compound manufacturer to be sure it is appropriate for the application.
High areas can be ground down or floated over with a self-leveling compound.
The surface of the floor must be clean and dry.
SUBFLOOR REQUIREMENTS, WOOD SUBFLOORS:
Wood subfloors must have a stable moisture content, between 6 – 10%.
Creaking subfloors must be repaired before installation. If the subfloor sags,
inspect the joists below for twists or weakness. If the subfloor is cupped or
uneven at the joints, recheck the moisture content of the subfloor to be sure it is
in the 6 – 10% range. Check for excessive moisture in the crawl space or base-
ment and look for other signs of a potential water problem. High areas are sand-
ed or planed; low areas are patched or filled with an appropriate leveling com-
pound, or covered with a rigid underlayment. When using a leveling com-
pound, be sure to follow the manufacturer’s recommendations, and allow the
compound to dry completely before starting to install the floor.
IMPORTANT NOTE: INFLOORBOARD™ AND CONCRETE SUBFLOORS:
Infloorboard™ was designed to be installed over a wooden subfloor.
Installation over concrete has been successfully done, but requires extreme
care, an assured dry slab and is not a preferred application. Details for instal-
lation over concrete are available upon request. A future product,
Infloorboard™ II, will be specifically designed to be able to float over a con-
crete subfloor, and for the systematic application of a vapor barrier.