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
Recharging Electrical Skills in Wales
Step by step collaborative solutions.
Ireland budget announcement 2025
CIOB responds with positivity, criticism and clarity.
The continued ISG fall out, where to go?
Support for ISG contractors, companies and employees.
New HES national centre for traditional building retrofit
Announced as HES publishes survey results which reveal strong support for retrofit.
Retrofit of Buildings, a CIOB Technical Publication
Expected to become one of the largest activities in the global construction industry.
Scope determination appeals and the Building Safety Act
Process explained following release of appeals guidance.
The ECA industry focus video channel
Keeping update with the industry session by session.
Over 25 recorded informations sessions freely available.
AT Awards 2024 ceremony East London October 25th.
Revisiting the AT community at the 2023 awards evening.
The Community Housing Fund and built affordable homes
CLTN reviews the impact of the Fund and calls for extension.
The grading system of the Regulator for Social Housing
A background, an explanation and ten recent enforcements.
Construction, repair and maintenance. Book review.
Putting new life into a city with a 1900 year history.
BSRIA Briefing 2024: Sustainable Futures speakers
Redefining Retrofit for Net Zero Living 22 Nov.
Wall of support for post-Grenfell regulation of electricians
Call for a shake-up of the construction industry highlighted on radio.
Digital sustainability through future AEC tools
Bringing together industry and academia to meet challenges.