Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 20238-2006 Installation, inspection and usage guidelines for wooden flooring. In addition to editorial changes, the following technical changes have been made with respect to GB/T 20238-2006:
——Applicable products including reconstitued wood flooring, antique style flooring and solid wood flooring for ground with heating system are added (see 5.1, 6.1, 7.1 and 8.1; Clause 1 of Edition 2006);
——The terms interior wood framing installation, reconstitued wood, reconstitued wood flooring, leveling course, moisture proofing course, heat distribution plates, insulating course, washboard for flooring, sandwich profire, floor radiant heating system, floating screed floor radiant heating or cooling and pre-grooved insulation board floor radiant heating and their definitions are added (see Clause 3);
——The terms interface agent and cementitious self-leveling floor mortar and their definitions are deleted (see 3.13 and 3.14 of Edition 2006);
——Definitions of wood flooring for ground with heating system and interior wood framing are modified (see 3.6 and 3.13; 3.15 and 3.1 of Edition 2006);
——Classification is added (see Clause 4);
——The standard structure is modified, i.e. the clauses/subclauses are arranged from based on flooring categories to on installation, inspection and usage guidelines (see Clause 5 to Clause 7, Clause 9 and Clause 10; Clause 4 to Clause 6 of Edition 2006);
——The general requirements and other requirements of installation guideline are modified (see 5.2.1, 5.2.2, 7.2.2, 8.2.1 and 8.2.2; 4.1.1, 5.1.1, 6.1.1 and 7.1.1 of Edition 2006);
——The contents about preparation before installation are modified (see 5.2.5.1.1; 4.1.4.1 of Edition 2006);
——The contents about installation of interior wood framing are modified (see 5.2.5.2; 4.1.4.2 of Edition 2006);
——The contents of the structural diagram for installation of solid wood flooring, i.e. a moisture resistant foil can be installed on the ground, are modified (see Figure 1; Figure 1 of Edition 2006);
——Requirements for the loss resulted from the installation of cork flooring are modified (see 7.2.4; 6.1.3 of Edition 2006);
——Requirements for the reserved joints in the installation of wooden floor used in radiant floor heating, i.e. the solid wood flooring for ground with heating system shall be 10mm~25mm from the wall, are modified (see 8.2.6.1.4; 7.1.5.1.4 of Edition 2006);
——Requirements for heating system are modified (see 8.2.3; 7.1.2 of Edition 2006);
——Requirements for control of indoor temperature in the usage guideline are modified (see 9.1.3; 4.3.3 of Edition 2006);
——The usage guideline of wooden floor used in radiant floor heating is modified (see 9.2.1; 7.3.1 of Edition 2006).
This standard was proposed by the State Forestry Administration of the People's Republic of China.
This standard is under the jurisdiction of the National Technical Committee on Wood-based Panels of Standardization Administration of China (SAC/TC 198).
The previous edition of the standard replaced by this standard is as follows:
——GB/T 20238-2006.
Installation, inspection and usage guidelines for wooden flooring
1 Scope
This standard specifies the terms and definitions, classification, installation requirements, completion inspection requirements, usage guideline and quality requirements within the warranty period in the installation, inspection and usage guidelines for wooden flooring.
This standard is applicable to the installation, inspection and usage of wooden flooring.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 4897 Particleboard
GB/T 5849 Blockboards and battenboards
GB/T 9846 Plywood for general use
GB/T 15036.1 Solid wood flooring - Part 1: Technical requirements
GB/T 15036.2-2009 Solid wood flooring - Part 2: Examination methods
GB/T 18102 Laminate flooring
GB/T 18103 Engineered wood flooring
GB 18580 Indoor decorating and refurbishing materials - Limit of formaldehyde emission of wood-based panels and finishing products
GB 18583 Indoor decorating and refurbishing materials - Limit of harmful substances of adhesives
GB/T 20240 Bamboo flooring
GB/T 24599-2009 Accessories for laying interior wooden flooring
GB/T 35913 Technical requirements of solid wood flooring for ground with heating system
GB 50209-2010 Code for acceptance of construction quality of building ground
JGJ 142-2012 Technical specification for radiant heating and cooling
LY/T 1614 Glued timber flooring
LY/T 1657 Cork floor
LY/T 1700 Wood-based flooring for ground with heating system
LY/T 1859 Antique style flooring
LY/T 1984-2011 Reconstitued wood flooring
LY/T 1987 Wooden washboard
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 15036.1, GB/T 18102, GB/T 18103, GB/T 24599-2009, GB 50209-2010, JGJ 142-2012 and LY/T 1984-2011 as well as the following apply. For the convenience of application, some terms and definitions given in GB/T 24599-2009, GB 50209-2010, JGJ 142-2012 and LY/T 1984-2011 are listed again.
3.1
interior wood framing installation
a method for installation of flooring on interior wood framing or on interior wood framing and load distribution panel
3.2
floating installation
a method for direct installation of flooring on under-lay
3.3
glue-down installation
an installation method of directly gluing the floor block to the ground
3.4
reconstitued wood
a square plate made of small-diameter wood, brush wood and other materials through rolling, gluing, forming blanks along lines and pressing
[LY/T 1984-2011, definition 3.1]
3.5
reconstitued wood flooring
flooring made of reconstitued wood
[LY/T 1984-2011, definition 3.2]
3.6
wood flooring for ground with heating system
wooden flooring installed on floor radiant heating system
3.7
other component on the ground
protruding objects such as cabinets, posts, pipelines and partitions fixed on the ground
3.8
leveling course
structural layer that plays the role of leveling, sloping or strengthening on cushion course, floor slab or filler course (light and loose materials)
[GB 50209-2010, definition 2.0.8]
3.9
moisture proofing course
structural layer that prevents moisture under a building foundation or floor from passing through the ground
[JGJ 142-2012, definition 2.0.21]
3.10
heat distribution plates
metal plates or foils which are installed under or above the heating parts or both and can uniformly disperse the heat generated by the heating parts, when the pre-grooved insulation board heated ground is adopted
[JGJ 142-2012, definition 2.0.11]
3.11
insulating course
structural layer (excluding pre-grooved insulation board and the insulation substrate of heating plate) installed separately on site to block the transfer of cold and heat and reduce ineffective cold and heat losses in radiant heating and cooling
[JGJ 142-2012, definition 2.0.20]
Note: The insulating course includes the insulating course on the radiant surface and that on the side face.
3.12
concealment
concealed works during flooring installation
Note: The concealment includes concealed works under construction such as pipeline arrangement during flooring installation.
3.13
interior wood framing
batten used to support the flooring
3.14
trenail
wooden cork used to drive into the concrete hole
Note: Trenails are used to facilitate driving in interior wood framing nails.
3.15
load distribution panel
panel installed between the flooring and the interior wood framing for ensuring the flatness of flooring installation foundation
Note: Load distribution panel is generally wood-based panels such as multiply plywood, blockboard and battenboard or particleboard.
3.16
guiding hole
guide hole driven in advance at the position to drive in flooring nail in order to facilitate the nailing of flooring nail to fix the flooring
3.17
moisture resistant foil
plastic film with moisture-proof function
3.18
under-lay
material flatly installed under the flooring to play a role of buffering, reducing noise and keeping away from moisture
3.19
washboard for flooring
strip material used at the joint of indoor wall and flooring
[GB/T 24599-2009, definition 3.8]
3.20
sandwich profire
material used at the position of transition, closing, fixation, connection and abutment between different or same interfaces (such as flooring and ceramic tile, flooring and flooring) in interior decoration
[GB/T 24599-2009, definition 3.9]
3.21
floor radiant heating system
a generic term of the insulating course, isolation layer, heating method and filler course installed in the building ground
[GB 50209-2010, definition 2.0.15]
Note: The floor radiant heating system is installed to realize the effect of floor radiant heating.
3.22
floating screed floor radiant heating or cooling
floor radiant heating or cooling form of installing heating components on the insulating course and filling concrete or cement mortar before installation of flooring surface
[JGJ 142-2012, definition 2.0.9]
Note: Floating screed floor radiant heating or cooling is referred to as floating screed radiant heating or cooling.
3.23
pre-grooved insulation board floor radiant heating
floor radiant heating form of installing the heating pipe or heating cable which is matched with and on the same level as the groove of the insulation board in the pre-grooved insulation board, so that the surface course can be directly installed without filling concrete
[JGJ 142-2012, definition 2.0.10]
3.24
gap
splicing clearance between adjacent floor battens after installation
3.25
high difference
height difference between adjacent floor battens after installation
3.26
warp
the edge of the flooring is titled upward
4 Classification
4.1 According to the installation method:
a) Interior wood framing installation;
b) Floating installation;
c) Glue-down installation.
4.2 According to whether floor radiant heating is adopted:
a) Radiant heating floor;
b) Non-radiant heating floor.
5 Requirements for interior wood framing installation and completion inspection of flooring
5.1 Applicable product category
The clause is applicable to the installation and completion inspection of solid wood flooring, glued timber flooring, reconstitued wood flooring, bamboo flooring, antique style solid wood flooring and antique style bamboo flooring.
5.2 Installation guideline
5.2.1 General requirements
Before installation, the following requirements shall be confirmed:
——Before installation, the installation method, requirements, period and inspection guideline shall be explained to and approved by the user.
——The flooring installation shall be carried out after the completion and inspection of concealment, ceiling work, end surface work and hydropower work.
——The strength and thickness of ground foundation shall comply with GB 50209-2010.
——The floor shall be solid, flat, clean and dry.
——The moisture content of the floor shall not exceed 20%, otherwise the construction of moisture proofing course shall be carried out or dehumidification measures shall be taken to make the moisture content of the floor be acceptable, and then installation can be carried out. The ground adjacent to soil shall be subjected to construction of moisture proofing course.
——The area to be floored shall be effectively isolated from water sources to prevent water sources (such as heating pipes, kitchens, bathrooms, etc.) from leaking into the area.
——The wall shall be perpendicular to the ground. The wall within 200mm from the ground shall be flat and the maximum chord height of the wall shall be less than or equal to 3mm by measuring it with a 2m guiding rule
——Materials that do not conform to GB 18580 and GB 18583 shall not be used.
——For areas with large difference between indoor and outdoor temperature, the wooden flooring shall be installed for 24h at the installation site before being unpacked for installation.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
5 Requirements for interior wood framing installation and completion inspection of flooring
5.1 Applicable product category
5.2 Installation guideline
5.3 Completion inspection guideline
6 Installation and completion inspection requirements for flooring by floating installation
6.1 Applicable product category
6.2 Installation guideline
6.3 Completion inspection guideline
7 Installation and completion inspection of flooring by glue-down installation
7.1 Applicable product category
7.2 Installation guideline
7.3 Completion inspection guideline
8 Installation and completion inspection of wooden floor used in radiant floor heating
8.1 Applicable product category
8.2 Installation guideline
8.3 Completion inspection guideline
9 Usage guideline for wooden flooring
9.1 General requirements
9.2 Usage guideline for wooden floor used in radiant floor heating
10 Quality requirements for wooden flooring during warranty period
10.1 Warranty period
10.2 Quality requirements for flooring surface course
10.3 Maintenance
10.4 Inspection after maintenance
Figure 1 Schematic diagram for the installation structures of solid wood flooring, glued timber flooring, reconstitued wood flooring and bamboo flooring
Table 1 Installation quality requirements of the solid wood flooring, glued timber flooring, reconstitued wood flooring and bamboo flooring
Table 2 Installation quality requirements of washboard for flooring
Table 3 Installation quality requirements of laminate flooring
Table 4 Installation quality requirements of engineered wood flooring and engineered cork flooring
Table 5 Installation quality requirements of cork flooring
Table 6 Requirements for the quality of surface course of solid wood flooring, glued timber flooring, reconstitued wood flooring and bamboo flooring
Table 7 Requirements for the quality of surface course of laminate flooring
Table 8 Requirements for the quality of surface course of engineered wood flooring and engineered cork flooring
Table 9 Requirements for the quality of surface course of cork flooring
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 20238-2006 Installation, inspection and usage guidelines for wooden flooring. In addition to editorial changes, the following technical changes have been made with respect to GB/T 20238-2006:
——Applicable products including reconstitued wood flooring, antique style flooring and solid wood flooring for ground with heating system are added (see 5.1, 6.1, 7.1 and 8.1; Clause 1 of Edition 2006);
——The terms interior wood framing installation, reconstitued wood, reconstitued wood flooring, leveling course, moisture proofing course, heat distribution plates, insulating course, washboard for flooring, sandwich profire, floor radiant heating system, floating screed floor radiant heating or cooling and pre-grooved insulation board floor radiant heating and their definitions are added (see Clause 3);
——The terms interface agent and cementitious self-leveling floor mortar and their definitions are deleted (see 3.13 and 3.14 of Edition 2006);
——Definitions of wood flooring for ground with heating system and interior wood framing are modified (see 3.6 and 3.13; 3.15 and 3.1 of Edition 2006);
——Classification is added (see Clause 4);
——The standard structure is modified, i.e. the clauses/subclauses are arranged from based on flooring categories to on installation, inspection and usage guidelines (see Clause 5 to Clause 7, Clause 9 and Clause 10; Clause 4 to Clause 6 of Edition 2006);
——The general requirements and other requirements of installation guideline are modified (see 5.2.1, 5.2.2, 7.2.2, 8.2.1 and 8.2.2; 4.1.1, 5.1.1, 6.1.1 and 7.1.1 of Edition 2006);
——The contents about preparation before installation are modified (see 5.2.5.1.1; 4.1.4.1 of Edition 2006);
——The contents about installation of interior wood framing are modified (see 5.2.5.2; 4.1.4.2 of Edition 2006);
——The contents of the structural diagram for installation of solid wood flooring, i.e. a moisture resistant foil can be installed on the ground, are modified (see Figure 1; Figure 1 of Edition 2006);
——Requirements for the loss resulted from the installation of cork flooring are modified (see 7.2.4; 6.1.3 of Edition 2006);
——Requirements for the reserved joints in the installation of wooden floor used in radiant floor heating, i.e. the solid wood flooring for ground with heating system shall be 10mm~25mm from the wall, are modified (see 8.2.6.1.4; 7.1.5.1.4 of Edition 2006);
——Requirements for heating system are modified (see 8.2.3; 7.1.2 of Edition 2006);
——Requirements for control of indoor temperature in the usage guideline are modified (see 9.1.3; 4.3.3 of Edition 2006);
——The usage guideline of wooden floor used in radiant floor heating is modified (see 9.2.1; 7.3.1 of Edition 2006).
This standard was proposed by the State Forestry Administration of the People's Republic of China.
This standard is under the jurisdiction of the National Technical Committee on Wood-based Panels of Standardization Administration of China (SAC/TC 198).
The previous edition of the standard replaced by this standard is as follows:
——GB/T 20238-2006.
Installation, inspection and usage guidelines for wooden flooring
1 Scope
This standard specifies the terms and definitions, classification, installation requirements, completion inspection requirements, usage guideline and quality requirements within the warranty period in the installation, inspection and usage guidelines for wooden flooring.
This standard is applicable to the installation, inspection and usage of wooden flooring.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 4897 Particleboard
GB/T 5849 Blockboards and battenboards
GB/T 9846 Plywood for general use
GB/T 15036.1 Solid wood flooring - Part 1: Technical requirements
GB/T 15036.2-2009 Solid wood flooring - Part 2: Examination methods
GB/T 18102 Laminate flooring
GB/T 18103 Engineered wood flooring
GB 18580 Indoor decorating and refurbishing materials - Limit of formaldehyde emission of wood-based panels and finishing products
GB 18583 Indoor decorating and refurbishing materials - Limit of harmful substances of adhesives
GB/T 20240 Bamboo flooring
GB/T 24599-2009 Accessories for laying interior wooden flooring
GB/T 35913 Technical requirements of solid wood flooring for ground with heating system
GB 50209-2010 Code for acceptance of construction quality of building ground
JGJ 142-2012 Technical specification for radiant heating and cooling
LY/T 1614 Glued timber flooring
LY/T 1657 Cork floor
LY/T 1700 Wood-based flooring for ground with heating system
LY/T 1859 Antique style flooring
LY/T 1984-2011 Reconstitued wood flooring
LY/T 1987 Wooden washboard
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 15036.1, GB/T 18102, GB/T 18103, GB/T 24599-2009, GB 50209-2010, JGJ 142-2012 and LY/T 1984-2011 as well as the following apply. For the convenience of application, some terms and definitions given in GB/T 24599-2009, GB 50209-2010, JGJ 142-2012 and LY/T 1984-2011 are listed again.
3.1
interior wood framing installation
a method for installation of flooring on interior wood framing or on interior wood framing and load distribution panel
3.2
floating installation
a method for direct installation of flooring on under-lay
3.3
glue-down installation
an installation method of directly gluing the floor block to the ground
3.4
reconstitued wood
a square plate made of small-diameter wood, brush wood and other materials through rolling, gluing, forming blanks along lines and pressing
[LY/T 1984-2011, definition 3.1]
3.5
reconstitued wood flooring
flooring made of reconstitued wood
[LY/T 1984-2011, definition 3.2]
3.6
wood flooring for ground with heating system
wooden flooring installed on floor radiant heating system
3.7
other component on the ground
protruding objects such as cabinets, posts, pipelines and partitions fixed on the ground
3.8
leveling course
structural layer that plays the role of leveling, sloping or strengthening on cushion course, floor slab or filler course (light and loose materials)
[GB 50209-2010, definition 2.0.8]
3.9
moisture proofing course
structural layer that prevents moisture under a building foundation or floor from passing through the ground
[JGJ 142-2012, definition 2.0.21]
3.10
heat distribution plates
metal plates or foils which are installed under or above the heating parts or both and can uniformly disperse the heat generated by the heating parts, when the pre-grooved insulation board heated ground is adopted
[JGJ 142-2012, definition 2.0.11]
3.11
insulating course
structural layer (excluding pre-grooved insulation board and the insulation substrate of heating plate) installed separately on site to block the transfer of cold and heat and reduce ineffective cold and heat losses in radiant heating and cooling
[JGJ 142-2012, definition 2.0.20]
Note: The insulating course includes the insulating course on the radiant surface and that on the side face.
3.12
concealment
concealed works during flooring installation
Note: The concealment includes concealed works under construction such as pipeline arrangement during flooring installation.
3.13
interior wood framing
batten used to support the flooring
3.14
trenail
wooden cork used to drive into the concrete hole
Note: Trenails are used to facilitate driving in interior wood framing nails.
3.15
load distribution panel
panel installed between the flooring and the interior wood framing for ensuring the flatness of flooring installation foundation
Note: Load distribution panel is generally wood-based panels such as multiply plywood, blockboard and battenboard or particleboard.
3.16
guiding hole
guide hole driven in advance at the position to drive in flooring nail in order to facilitate the nailing of flooring nail to fix the flooring
3.17
moisture resistant foil
plastic film with moisture-proof function
3.18
under-lay
material flatly installed under the flooring to play a role of buffering, reducing noise and keeping away from moisture
3.19
washboard for flooring
strip material used at the joint of indoor wall and flooring
[GB/T 24599-2009, definition 3.8]
3.20
sandwich profire
material used at the position of transition, closing, fixation, connection and abutment between different or same interfaces (such as flooring and ceramic tile, flooring and flooring) in interior decoration
[GB/T 24599-2009, definition 3.9]
3.21
floor radiant heating system
a generic term of the insulating course, isolation layer, heating method and filler course installed in the building ground
[GB 50209-2010, definition 2.0.15]
Note: The floor radiant heating system is installed to realize the effect of floor radiant heating.
3.22
floating screed floor radiant heating or cooling
floor radiant heating or cooling form of installing heating components on the insulating course and filling concrete or cement mortar before installation of flooring surface
[JGJ 142-2012, definition 2.0.9]
Note: Floating screed floor radiant heating or cooling is referred to as floating screed radiant heating or cooling.
3.23
pre-grooved insulation board floor radiant heating
floor radiant heating form of installing the heating pipe or heating cable which is matched with and on the same level as the groove of the insulation board in the pre-grooved insulation board, so that the surface course can be directly installed without filling concrete
[JGJ 142-2012, definition 2.0.10]
3.24
gap
splicing clearance between adjacent floor battens after installation
3.25
high difference
height difference between adjacent floor battens after installation
3.26
warp
the edge of the flooring is titled upward
4 Classification
4.1 According to the installation method:
a) Interior wood framing installation;
b) Floating installation;
c) Glue-down installation.
4.2 According to whether floor radiant heating is adopted:
a) Radiant heating floor;
b) Non-radiant heating floor.
5 Requirements for interior wood framing installation and completion inspection of flooring
5.1 Applicable product category
The clause is applicable to the installation and completion inspection of solid wood flooring, glued timber flooring, reconstitued wood flooring, bamboo flooring, antique style solid wood flooring and antique style bamboo flooring.
5.2 Installation guideline
5.2.1 General requirements
Before installation, the following requirements shall be confirmed:
——Before installation, the installation method, requirements, period and inspection guideline shall be explained to and approved by the user.
——The flooring installation shall be carried out after the completion and inspection of concealment, ceiling work, end surface work and hydropower work.
——The strength and thickness of ground foundation shall comply with GB 50209-2010.
——The floor shall be solid, flat, clean and dry.
——The moisture content of the floor shall not exceed 20%, otherwise the construction of moisture proofing course shall be carried out or dehumidification measures shall be taken to make the moisture content of the floor be acceptable, and then installation can be carried out. The ground adjacent to soil shall be subjected to construction of moisture proofing course.
——The area to be floored shall be effectively isolated from water sources to prevent water sources (such as heating pipes, kitchens, bathrooms, etc.) from leaking into the area.
——The wall shall be perpendicular to the ground. The wall within 200mm from the ground shall be flat and the maximum chord height of the wall shall be less than or equal to 3mm by measuring it with a 2m guiding rule
——Materials that do not conform to GB 18580 and GB 18583 shall not be used.
——For areas with large difference between indoor and outdoor temperature, the wooden flooring shall be installed for 24h at the installation site before being unpacked for installation.
Contents of GB/T 20238-2018
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
5 Requirements for interior wood framing installation and completion inspection of flooring
5.1 Applicable product category
5.2 Installation guideline
5.3 Completion inspection guideline
6 Installation and completion inspection requirements for flooring by floating installation
6.1 Applicable product category
6.2 Installation guideline
6.3 Completion inspection guideline
7 Installation and completion inspection of flooring by glue-down installation
7.1 Applicable product category
7.2 Installation guideline
7.3 Completion inspection guideline
8 Installation and completion inspection of wooden floor used in radiant floor heating
8.1 Applicable product category
8.2 Installation guideline
8.3 Completion inspection guideline
9 Usage guideline for wooden flooring
9.1 General requirements
9.2 Usage guideline for wooden floor used in radiant floor heating
10 Quality requirements for wooden flooring during warranty period
10.1 Warranty period
10.2 Quality requirements for flooring surface course
10.3 Maintenance
10.4 Inspection after maintenance
Figure 1 Schematic diagram for the installation structures of solid wood flooring, glued timber flooring, reconstitued wood flooring and bamboo flooring
Table 1 Installation quality requirements of the solid wood flooring, glued timber flooring, reconstitued wood flooring and bamboo flooring
Table 2 Installation quality requirements of washboard for flooring
Table 3 Installation quality requirements of laminate flooring
Table 4 Installation quality requirements of engineered wood flooring and engineered cork flooring
Table 5 Installation quality requirements of cork flooring
Table 6 Requirements for the quality of surface course of solid wood flooring, glued timber flooring, reconstitued wood flooring and bamboo flooring
Table 7 Requirements for the quality of surface course of laminate flooring
Table 8 Requirements for the quality of surface course of engineered wood flooring and engineered cork flooring
Table 9 Requirements for the quality of surface course of cork flooring
