Healthier-choice CHOICE Hardwoods Manuel d'utilisateur télécharger pdf (Page 3)

RECOMMENDATIONS FOR EQUALIZING SOLID WOOD:

• Flooring stored upon “on-grade” concrete oors should

be elevated at least four inches to allow air circulation

under cartons.

• Flooring must acclimate for as long as necessary to

meet minimum installation requirements for moisture

content. Using the equilibrium moisture content chart

below, determine the proper moisture content for the

installation.

• Always use a moisture meter to determine where the

ooring and present job-site conditions are in relation to

the projected nal equilibrium point taking into account

seasonal changes.

• Monitor the ooring and job-site conditions as they

acclimate. If the wood is neither gaining nor losing

moisture, an equilibrium condition has been reached.

NOTE: No single xed moisture content is right for all sites as equilibrium points can vary dramatically in different environments. It is

the responsibility of the owner and installer to monitor all variables that can impact the target equilibrium point.

TESTING FOR MOISTURE CONTENT

The determination of moisture content is an essential part of quality control within the ooring installation process. Flooring installers

must know the dryness of not only the wood ooring, but its sub-oor and the concrete slab beneath it, if one exists. A moisture meter

is a critical tool to determine if oor boards are dry enough for an installation to proceed. Moisture is one of the most critical areas of

concern. Monitor the ooring and the job-site conditions throughout the preparatory period and the installation process. The sub-oor

must not exceed 12% moisture content and the difference between sub-oor and hardwood ooring cannot exceed 4% for 3-5/8”

planks and 2% for wider planks. If a sub-oor exceeds this amount, an effort should be made to locate and eliminate the source of

moisture before further installation. A moisture barrier (6 mil polyethylene lm minimum) may be required in addition to the 15 lbs.

asphalt felt. Asphalt felt is not considered a moisture barrier.

SUB-FLOOR PREPARATION

The sub-oor must be structurally sound. The sub-oor must be dry and free of wax, paint, oil and debris. Replace any water-dam-

aged or delaminated sub-ooring or underlayment. Scrape smooth and sweep prior to installation. The sub-oor must be level, that is,

within 3/16” over 10’ and/or 1/8” over 6’. If the sub-oor is concrete, a minimum of 30 days drying time for a reliable moisture reading

is necessary. DO NOT use gypsum-based (white) patching compounds. Follow the manufacturer’s recommendations for applying the

leveling compound. Areas containing new leveling compound must be completely dry (meeting moisture vapor emission tolerances)

before proceeding with the installation of the wood oor. If the sub-oor is plywood or equivalent, high areas or joints must be sanded

at. If plywood or equivalent, the sub-oor must be properly secured with nails or screws every 6 inches along joists to reduce the

possibility of squeaking after nal installation. Appropriate moisture tests must be performed as outlined in the “Testing for Moisture

Content” section listed below. Minimum thickness sub-oor material recommendations are satisfactory for 16” on center joist spac-

ing. Thicker sub-oor recommendations will allow up to 19.2” joist spacing. Sub-oor panels should be spaced 1/8” apart to allow for

expansion. It is highly recommended that Choice Hardwood solid oors not be installed over existing glue-down wood oors or over

wood oors that exceed 3 1/4” face size. Cover sub-oor area with 15 lbs. asphalt felt. If installing over suboor, use vapor retarders

such as asphalt, saturated craft paper or 15lbs. felt.

NOTE: Over a wood suboor do not use an impermeable vapor retarder material with a perm rating of ,7 or less, such as 6 mil

polyurethane lm or other polymer materials, as it may trap moisture on or in the suboor.

Equilibrium Moisture Content Chart

C: -1 4 10 16 21 27 32 38 43 49 54

F: 30 40 50 60 70 80 90 100 110 120 130

5 1.4 1.4 1.4 1.3 1.3 1.3 1.2 1.2 1.1 1.1 1.0

10 2.6 2.6 2.6 2.5 2.5 2.4 2.3 2.3 2.2 2.1 2.0

15 3.7 3.7 3.6 3.6 3.5 3.5 3.4 3.3 3.2 3.0 2.9

20 4.6 4.6 4.6 4.6 4.5 4.4 4.3 4.2 3.0 3.9 3.7

25 5.5 5.5 5.5 5.4 5.4 5.3 5.1 5.0 4.9 4.7 4.5

30 6.3 6.3 6.3 6.2 6.2 6.1 5.9 5.8 5.6 5.4 5.2

35 7.1 7.1 7.1 7.0 6.9 6.8 6.7 6.5 6.3 6.1 5.9

40 7.9 7.9 7.9 7.8 7.7 7.6 7.4 7.2 7.0 6.8 6.6

45 8.7 8.7 8.7 8.6 8.5 8.3 8.1 7.9 7.7 7.5 7.2

50 9.5 9.5 9.5 9.4 9.2 9.1 8.9 8.7 8.4 8.2 7.9

55 10.4 10.4 10.3 10.2 10.1 9.9 9.7 9.5 9.2 8.9 8.7

60 11.3 11.3 11.2 11.1 11.0 10.8 10.5 10.3 10.0 9.7 9.4

65 12.4 12.3 12.3 12.1 12.0 11.7 11.5 11.2 11.0 10.6 10.3

70 13.5 13.5 13.4 13.3 13.1 12.9 12.6 12.3 12.0 11.7 11.3

75 14.9 14.9 14.8 14.6 14.4 14.2 13.9 13.6 13.2 12.9 12.5

80 16.5 16.5 16.4 16.2 16.0 15.7 15.4 15.1 14.7 14.4 14.0

85 18.5 18.5 18.4 18.2 17.9 17.7 17.3 17.0 16.6 16.2 15.8

90 21.0 21.0 20.9 20.7 20.5 20.2 19.8 19.5 19.1 18.6 18.2

95 24.3 24.3 24.3 24.1 23.9 23.6 23.3 22.9 22.4 22.0 21.5

98 26.9 26.9 26.9 26.8 26.6 26.3 26.0 25.6 25.2 24.7 24.2

Relative Humidity %

Ambient Air Temperature

1 2 3 4

Commentaires sur ces manuels

Pas de commentaire

Healthier-choice CHOICE Hardwoods Manuel d'utilisateur Page 3

Commentaires sur ces manuels

Produits connexes et manuels pour Logiciel Healthier-choice CHOICE Hardwoods