Tongue and groove joint
Contents |
[edit] Introduction
An edge-to-edge, tongue and groove joint (also referred to as T&G, tongue & groove, tongue-in-groove or tongued and grooved) is a carpentry term used to describe materials that join together in a specific manner described below.
[edit] Joining technique
The locking mechanism is made with a tongue (male) ridge projection on one edge and a matching groove (female) slot recession on the other edge. The tongue of one piece fits into the groove of the corresponding piece to form a strong, flush joint that may be glued in place if a permanent joint is required.
There are also loose tongue and groove joints. This technique is used on materials that are given grooves on facing edges and joined with a separate (or loose) piece of material that fits between the two and locks them together. Again, glue is often used to secure the joint.
Tongue and groove joints are variations on the mortise and tenon joint, but instead of joining two pieces at a right angle (like a mortise and tenon joint), the tongue and groove connection creates a strong, smooth parallel joint.
[edit] Common applications
This traditional fitting method is often used on natural materials (such as timber or cork), but it can also apply to artificial materials (such as plastic, vinyl or engineered timber). It was once commonly used for flooring and furniture joinery, but other methods have now become widely used.
Tongue and groove treatments can also be used on interior walls such as floor to ceiling timber panels, moulding or wainscoting. Wainscoting is a type of wall panel that is both functional and decorative. It was historically made from timber, but it is now available in other materials. Wainscoting is typically found on the lower portion of an interior wall.
It can also be used as cladding on a building’s exterior surface. The term 'cladding' refers to components that are attached to the primary structure of a building to form non-structural, external surfaces. This is as opposed to buildings in which the external surfaces are formed by structural elements, such as masonry walls, or applied surfaces such as render.
The tongue and groove connection method is the basic concept behind Tongue Larssen interlocking sheets of metal used to create protective retaining walls. These sheet piles can have beneficial driving qualities and provide a strong, close-fitting joint to form an effective water seal because of their uniform section shape. Tongue Larssen sheet piles can be used for water control purposes, such as coastal protection, tide control, flood barriers and so on.
[edit] Advantages and disadvantages
In addition to their smooth appearance and strong bond, tongue and groove joints can be fairly easy to fabricate and instal without causing damage to the edges when they are fitted together. For flooring installations, the tongue and groove technique is suitable for floating floors and is commonly incorporated into click and lock flooring installations. However, unlike basic tongue and groove flooring, click lock flooring joins at the interlocking edge and then gets snapped into place through the application of firm, downward pressure.
In any type of installation, tongue and groove joints can be difficult to disassemble or repair once the glue has set between the panels.
[edit] Related articles on Designing Buildings
Featured articles and news
Definition of Statutory in workplace and facilities management
Established by IWFM, BESA, CIBSE and BSRIA.
The general election and the construction industry
As PM, Rishi Sunak announces July 4 date for an election.
Tackling the lack of knowledge or confidence in heat pumps
The CICV Green Home Festival part of the Edinburgh Fringe.
Home improvements swapped for green energy upgrades
As applications down since and desire to reduce bills up.
Eco apprenticeships continue help grow green workforce
A year after being recognised at the King's coronation.
The Use of Natural Insulation Materials in Retrofit
New paper from STBA with support from SDF.
National Retrofit Hub in partnership with InstallerSHOW.
Permitted development rights for agricultural buildings
The changes coming into effect as of May 21, 2024.
Biodiversity and the built environment digital series
The nature of building, with CIOB and CWP.
A call for prevention and sensitive re-use.
Risks to the long-term effectiveness of the BNG scheme
National Audit Office publish review of Biodiversity Net Gain.
The CIAT principal designer register
Providing assurance and verification of the capability and competence of registered ATs.
Building Safety recommendations and Northern Ireland
The NI roadmap to improving safety in high rise residential.
Specifying rendered external wall insulation for fire safety
How to interrogate the evidence provided to the specifier.
The benefits of writing articles for your organisation
How to create a profile for your organisation and publish for free.
Scottish Government action to reach net-zero targets
Retrofit expert group highlight critical actions needed.
A forward thinking, inclusive global community of members.