Home Legend Cork - Manual (Page 2)

Doc. ID: 136 Rev: 3 Effective: 1/25/2014 Page | 2
Date: ______________
Relative Humidity (%):______
Temperature (°F):______
Subfloor Type:______________________
Subfloor Avg. Moisture Content (%):_______
Acclimation Period: ___________
Job Site Condition
Prior to installation, the installer must ensure that at the time of installation, the job site conditions including subfloor/substrate, ambient
temperature and relative humidity, and all impacting variables will not negatively affect floor. Home Legend will decline responsibility for
damages associated with improper installation or poor site conditions.
Storage and Conditions
Do not store flooring in uncontrolled environmental conditions. For example, garages and exterior patios are not acceptable areas to store
flooring. Handle and unload flooring with care and store within the environmentally controlled site in which it is expected to perform.
Flooring stored on concrete slab should be elevated at least four inches to allow air circulation under cartons.
Existing Home
Existing home should have a consistent room temperature of 60°F-80°F and relative humidity (RH) of 35%-60%. Continual extreme deviation
from these conditions will affect the dimensions of flooring. During heating season, humidity may be much lower than the acceptable range.
During the heating season, a humidifier is recommended to prevent excess shrinkage in flooring due to low humidity levels. During the non-
heating season, humidity levels can be maintained by using an air conditioner, dehumidifier, or by turning on your heating system periodically.
New Construction or Remodel
All work involving water, such as pouring basement concrete floors, drywall and plasterwork, plumbing, etc. must be completed well in
advance of the floor delivery. Ensure that the building is enclosed. Where building codes allow, permanent heating and/or air conditioning
systems should be operating at least five days preceding installation (this will promote proper acclimation if necessary) and should be
maintained during and after installation. If it is not possible for the permanent heating and/or air conditioning system to be operating before,
during and after installation, a temporary heating and/or dehumidification system that simulate normal living (occupied) conditions can
enable the installation to proceed until the permanent heating and/or air conditioning system is fully operational.
Your job site should have a consistent temperature of 60°F-80°F and relative humidity (RH) of 35%-60% which should be maintained
continuously thereafter.
Basements and Crawl Spaces
Concrete slab or ground must be dry. The ground in the crawl spaces must be completely covered using 6 mil black polyethylene. Crawl
space clearance between the earth and underside of joists should be no less than 18 inches and the perimeter vent area should be equal to
1.5% of the total square footage of the crawl space or as mandated by code.
Concrete Subfloor Requirements
It must have minimum rated strength of 3000 psi.
It must be level to within 1/8” in a 6 foot span or 3/16” in a 10 foot span; no bumps or low spots. High spots can be removed by grinding;
Gaps greater than 5/32” wide and 1/16” depressions should be filled with patching compound formulated for use in floor installation.
It must be clean; no construction debris, soil, mud and any other objects on or adhering to the floor; if necessary, scrape and sweep away
before the installation; no protrusions of nails, debris, metals should remain.
New concrete slab must cure for at least 60 days. It must have a minimum 10 mil polyethylene sheet between the ground and the concrete.
It must meet concrete moisture requirement below.
It must be free from moisture related conditions which can damage the installed flooring.
Light Weight Concrete
It is concrete which rated strength is less than 3000 psi.
Perform a quick check by drawing a nail across the top; if it leaves indentation, it is probably light concrete.
For glue-down application, the concrete must possess shear strength greater than the glue. If concrete rated psi is unknown, contact the
adhesive manufacturer for guidance.
Concrete Moisture
All concrete subfloors should be tested for moisture content and the results documented. Visual checks are not reliable. Perform tests at
locations around exterior doorways, near walls containing plumbing, near foundation walls and in the center of the room. Minimum sample
size is 3 samples per 1000 square feet of area and one test for every additional 1000 square feet thereafter.
Its moisture content should meet one of the following criteria below:
•
5% when tested using Tramex Concrete Moisture Encounter
• Less than 3 pounds per 1000 square feet per 24 hours when using Calcium Chloride test (ASTM F 1869)
• 75% when using Relative Humidity Testing (ASTM F-2170).