Wood flooring

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An example of solid wood flooring with a top coating of polyurethane Flooring.jpg
An example of solid wood flooring with a top coating of polyurethane

Wood flooring is any product manufactured from timber that is designed for use as flooring, either structural or aesthetic. Wood is a common choice as a flooring material and can come in various styles, colors, cuts, and species. Bamboo flooring is often considered a form of wood flooring, although it is made from bamboo rather than timber. [1]

Contents

Types

Solid

Hardwood flooring

Hardwood flooring Interieur, detail oude vloerdelen in keuken - Pieterburen - 20364645 - RCE.jpg
Hardwood flooring

Solid hardwood floors are made of planks milled from a single piece of timber. Solid hardwood floors were originally used for structural purposes, being installed perpendicular to the wooden support beams of a building known as joists or bearers. With the increased use of concrete as a subfloor in some parts of the world, engineered wood flooring has gained some popularity. However, solid wood floors are still common and popular, but are commonly more expensive in the United States and considered higher end. Solid wood floors have a thicker wear surface and can be sanded and finished more times than an engineered wood floor. [2] It is not uncommon for homes in New England, Eastern Canada, USA, and Europe to have the original solid wood floor still in use today.

Solid wood manufacturing

Solid wood flooring is milled from a single piece of timber that is kiln or air dried before sawing. Depending on the desired look of the floor, the timber can be cut in three ways: flat-sawn, quarter-sawn, and rift-sawn. The timber is cut to the desired dimensions and either packed unfinished for a site-finished installation or finished at the factory. The moisture content at time of manufacturing is carefully controlled to ensure the product does not warp during transport and storage.

A number of proprietary features for solid wood floors are available. Many solid woods come with grooves cut into the back of the wood that run the length of each plank, often called 'absorption strips,' that are intended to reduce cupping. Solid wood floors are mostly manufactured 0.75 inches (19 mm) thick with a tongue-and-groove for installation.

Oak herringbone parquet floor with two-strip wenge border Oak herringbone wood floor with two stripe wenge border.jpg
Oak herringbone parquet floor with two-strip wenge border
Other wood manufacturing styles
Rotary-peel

This process involves treating the wood by boiling the log in water. After preparation, the wood is peeled by a blade starting from the outside of the log and working toward the center, thus creating a wood veneer. The veneer is then pressed flat with high pressure. This style of manufacturing tends to have problems with the wood cupping or curling back to its original shape. Rotary-peeled engineered hardwoods tend to have a plywood appearance in the grain. [3]

Sliced-peel

This process begins with the same treatment process that the rotary peel method uses. However, instead of being sliced in a rotary fashion, with this technique the wood is sliced from the log in much the same manner that lumber is sawn from a log – straight through. The veneers do not go through the same manufacturing process as rotary peeled veneers. Engineered hardwood produced this way tends to have fewer problems with "face checking", and also does not have the same plywood appearance in the grain. [3]

Dry solid-sawn

Instead of boiling the hardwood logs, in this methods they are kept at a low humidity level and dried slowly to draw moisture from the inside of the wood cells. The logs are then sawn in the same manner as for solid hardwood planks. This style of engineered hardwood has the same look as solid hardwood, and does not have any of the potential problems of "face checking" that rotary-peel and slice-peel products have, because the product is not exposed to added moisture

Engineered

Wood flooring is a popular feature in many houses. LightningVolt Wood Floor.jpg
Wood flooring is a popular feature in many houses.

Engineered wood flooring consists of two or more layers of wood adhered together to form a plank. Typically, engineered wood flooring uses a thin layer (lamella) of a more expensive wood bonded to a core constructed from cheaper wood. The increased stability of engineered wood is achieved by running each layer at a 90° angle to the layer above. This stability makes it a universal product that can be installed over all types of subfloors above, below or on grade. Engineered wood is the most common type of wood flooring in Europe and has been growing in popularity in North America. [4]

Laminate and vinyl floors are often confused with engineered wood floors, but are not. Laminate flooring uses an image of wood on its surface, while vinyl flooring is plastic formed to look like wood.

The several different categories of engineered wood flooring include:

Comparison of solid wood with engineered wood

It is difficult to compare solid wood flooring to engineered wood flooring due to the wide range of quality in both product categories and each type has its limitations. Solid hardwood is more prone than engineered timber to "gapping" (excessive space between planks), "crowning" (convex curving upwards when humidity increases) and "cupping" (a concave or "dished" appearance of the plank, with the height of the plank along its longer edges being higher than the centre) with increased plank size. Patented installation systems for engineered wood may allow for faster installation and easy replacement of boards. Engineered wood also allows for a floating installation where the planks are not fastened to the subfloor, but to each other. Engineered flooring is suitable for underfloor and radiant heating systems, while solid wood cannot be used with underfloor heating. [6]

Some characteristics are common to each category: solid wood is more frequently site-finished, is always in a plank format, is generally thicker than engineered wood, and is installed by nailing. Engineered wood is more frequently pre-finished, is very rarely site-finished and is installed by staple down or floating installation.[ citation needed ]

Installation systems

Wood can be manufactured with a variety of different installation systems:

  1. Tongue-and-groove: One side and one end of the plank have a groove, the other side and end have a tongue (protruding wood along an edge's center). The tongue and groove fit snugly together, thus joining or aligning the planks, and are not visible once joined. Tongue-and-groove flooring can be installed by glue-down (both engineered and solid), floating (engineered only), or nail-down (both solid and engineered).
  2. "Click" or Woodloc systems: a number of patented "click" systems now exist. These click systems are either "unilin" or "fiboloc". A "click" floor is similar to tongue-and-groove, but instead of fitting directly into the groove, the board must be angled or "tapped" in to make the curved or barbed tongue fit into the modified groove. No adhesive is used when installing a "click" floor, making board replacement easier. This system not only exists for engineered wood floors but also engineered bamboo and a small number of solid floors (such as "parador solido click") and is designed to be used for floating installations. It is beneficial for the do-it-yourself market.
  3. Floor connection system: A wide range of connection systems exist, as most of them are mill-specific manufacturing techniques. The general principle is to have grooves on all four sides of the plank with a separate, unconnected, piece that is inserted into the grooves of two planks to join them. The piece used for the connection can be made from wood, rubber, or plastic. This installation system allows for different materials (i.e. wood and metal) to be installed together if they have the same connection system.
  4. Wood flooring can also be installed utilizing the glue-down method. This is an especially popular method for solid parquet flooring installations on concrete sub-floors. Additionally, engineered wood flooring may use the glue-down method as well. A layer of mastic is placed onto the sub-floor using a trowel similar to those used in laying ceramic tile. The wood pieces are then laid on top of the glue and hammered into place using a rubber mallet and a protected 2x4 to create a level floor. Traditionally, parquet floors will require sanding and re-finishing after the glue-down installation method due to the small size pieces. However, most new engineered parquet blocks don't require this extra step.
  5. Floating installation: A floating installation is where the flooring is installed on top of a layer of underlayment or moisture barrier. The individual planks are glued together using a tongue and groove adhesive such as PVA wood glue. Space for expansion should be left at the edges of the room. Cabinets and walls should not be installed on top of floating floors. Subfloors should be flat and it is not recommended to install on top of more than one layer of existing flooring.[ citation needed ]
  6. Another installation method, secret nailing, offers similar benefits to the glue-down or fully bonded method for boards of at least 18mm. Thinner boards may require a glue-down or floating installation instead.[ citation needed ]
  7. Hardwood floors: Rich textures and grains on hardwood floors add a timeless charm and organic warmth to any area, improving its appearance. Because of their resilience, they will continue to function well for many years to come, even in the face of significant foot traffic. Hardwood floors may add value and charm to a house and become a treasured feature with regular care and refinishing. [7]

Finishing, buffing, sanding and drying

Floor finishes

  1. Polyurethane – Polyurethane floor finishes were first introduced around 1942. Water-based urethane is harder than oil-modified polyurethane and is much safer for the user. Within both categories there are many variations and other names used to describe the finish. They have very different refinishing and maintenance requirements.
  2. Natural shellacs, lacquers, and varnishes were used in the past, as were waxes, often blended with oils.
  3. Oil – Oiled floors have existed for several thousand years and oil is the most common floor finish used globally. Oils used for floor finishing are natural drying oils of vegetable origin that are not to be confused with petroleum based oils and contain no VOCs. Pre-finished oil floors can be UV cured.
  4. Brushed and oiled – Steel brushes are used in the direction of the grain which opens up the surface of the wood and removes splinters. The wood is then oiled.

Buffing

Generally, older solid hardwood floors need to be buffed every 3–5 years. The process usually takes about one day. Buffing refers to the process of using a stand up floor buffer. The floor is abraded with 180 grit screen on the buffer. This allows for the new coat of finish to mechanically adhere to the floor. This process works with great results as long as the floor hasn't had any waxes or synthetic cleaners. Factory finished floors do not require buffing.

Refinishing

Sanding the finish off old wood floors and smoothing them out.

Floor sanding

Sanding provides a method for smoothing an installed floor, compensating for unevenness of the subfloor. Additionally, sanding is used to renew the appearance of older floors. Sanding using successively finer grades of sandpaper is required to ensure even stain penetration when stains are used, as well as to eliminate visible scratches from coarser sandpaper grades used initially. Prior to modern polyurethanes, oils and waxes were used in addition to stains to provide finishes. [8] Beeswax and linseed oil, for example, are both natural crosslinking polymers and harden over time. [9]

Floor scraping

Prior to the 20th century, hardwood floors were refinished by scraping. This process revealed undamaged wood but left many shallow gouges in the floor. Scraping may be performed using such tools as chisels, planes, and cabinet scrapers. [10] Modern methods duplicate this using proprietary machinery. [11]

See also

Related Research Articles

<span class="mw-page-title-main">Wood</span> Fibrous material from trees or other plants

Wood is a structural tissue found in the stems and roots of trees and other woody plants. It is an organic material – a natural composite of cellulose fibers that are strong in tension and embedded in a matrix of lignin that resists compression. Wood is sometimes defined as only the secondary xylem in the stems of trees, or more broadly to include the same type of tissue elsewhere, such as in the roots of trees or shrubs. In a living tree it performs a support function, enabling woody plants to grow large or to stand up by themselves. It also conveys water and nutrients between the leaves, other growing tissues, and the roots. Wood may also refer to other plant materials with comparable properties, and to material engineered from wood, woodchips, or fiber.

<span class="mw-page-title-main">Lumber</span> Wood that has been processed into beams and planks

Lumber is wood that has been processed into uniform and useful sizes, including beams and planks or boards. Lumber is mainly used for construction framing, as well as finishing. Lumber has many uses beyond home building. Lumber is referred to as timber in the United Kingdom, Europe, Australia, and New Zealand, while in other parts of the world the term timber refers specifically to unprocessed wood fiber, such as cut logs or standing trees that have yet to be cut.

<span class="mw-page-title-main">Plywood</span> Manufactured wood panel made from thin sheets of wood veneer

Plywood is a composite material manufactured from thin layers, or "plies", of wood veneer that are glued together with adjacent layers, having both glued with each other at right angle or at 90 degrees angle. It is an engineered wood from the family of manufactured boards, which include medium-density fibreboard (MDF), oriented strand board (OSB), and particle board.

<span class="mw-page-title-main">Floor</span> Walking surface of a room

A floor is the bottom surface of a room or vehicle. Floors vary from simple dirt in a cave to many layered surfaces made with modern technology. Floors may be stone, wood, bamboo, metal or any other material that can support the expected load.

<span class="mw-page-title-main">Marquetry</span> Art and craft applying pieces of veneer to form decorative patterns

Marquetry is the art and craft of applying pieces of veneer to a structure to form decorative patterns, designs. The technique may be applied to case furniture or even seat furniture, to decorative small objects with smooth, veneerable surfaces or to freestanding pictorial panels appreciated in their own right.

Flooring is the general term for a permanent covering of a floor, or for the work of installing such a floor covering. Floor covering is a term to generically describe any finish material applied over a floor structure to provide a walking surface. Both terms are used interchangeably but floor covering refers more to loose-laid materials.

<span class="mw-page-title-main">Engineered wood</span> Range of derivative wood products engineered for uniform and predictable structural performance

Engineered wood, also called mass timber, composite wood, human-made wood, or manufactured board, includes a range of derivative wood products which are manufactured by binding or fixing the strands, particles, fibres, or veneers or boards of wood, together with adhesives, or other methods of fixation to form composite material. The panels vary in size but can range upwards of 64 by 8 feet and in the case of cross-laminated timber (CLT) can be of any thickness from a few inches to 16 inches (410 mm) or more. These products are engineered to precise design specifications, which are tested to meet national or international standards and provide uniformity and predictability in their structural performance. Engineered wood products are used in a variety of applications, from home construction to commercial buildings to industrial products. The products can be used for joists and beams that replace steel in many building projects. The term mass timber describes a group of building materials that can replace concrete assemblies.

<span class="mw-page-title-main">Log house</span> House built from wooden logs

A log house, or log building, is a structure built with horizontal logs interlocked at the corners by notching. Logs may be round, squared or hewn to other shapes, either handcrafted or milled. The term "log cabin" generally refers to a smaller, more rustic log house, such as a hunting cabin in the woods, that may or may not have electricity or plumbing.

<span class="mw-page-title-main">Laminate flooring</span> Type of manufactured floor covering

Laminate flooring is a multi-layer synthetic flooring product fused together with a lamination process. Laminate flooring simulates wood with a photographic appliqué layer under a clear protective layer. The inner core layer is usually composed of melamine resin and fiber board materials. There is a European Standard No. EN 13329:2000 specifying laminate floor covering requirements and testing methods.

<span class="mw-page-title-main">Vinyl composition tile</span> Flooring material

Vinyl composition tile (VCT) is a finished flooring material used primarily in commercial and institutional applications. Modern vinyl floor tiles and sheet flooring and versions of those products sold since the early 1980s are composed of colored polyvinyl chloride (PVC) chips formed into solid sheets of varying thicknesses by heat and pressure. Floor tiles are cut into modular shapes such 12-by-12-inch squares or 12-by-24-inch rectangles. In installation the floor tiles or sheet flooring are applied to a smooth, leveled sub-floor using a specially formulated vinyl adhesive or tile mastic that remains pliable. In commercial applications some tiles are typically waxed and buffed using special materials and equipment.

<span class="mw-page-title-main">Frame and panel</span> Wood construction in which a panel is enclosed in a rigid frame

Frame and panel construction, also called rail and stile, is a woodworking technique often used in the making of doors, wainscoting, and other decorative features for cabinets, furniture, and homes. The basic idea is to capture a 'floating' panel within a sturdy frame, as opposed to techniques used in making a slab solid wood cabinet door or drawer front, the door is constructed of several solid wood pieces running in a vertical or horizontal direction with exposed endgrains. Usually, the panel is not glued to the frame but is left to 'float' within it so that seasonal movement of the wood comprising the panel does not distort the frame.

<span class="mw-page-title-main">Kitchen cabinet</span> Kitchen furniture

Kitchen cabinets are the built-in furniture installed in many kitchens for storage of food, cooking equipment, and often silverware and dishes for table service. Appliances such as refrigerators, dishwashers, and ovens are often integrated into kitchen cabinetry. There are many options for cabinets available at present.

<span class="mw-page-title-main">Wood veneer</span> Thin slices of wood

In woodworking, veneer refers to thin slices of wood and sometimes bark that typically are glued onto core panels to produce flat panels such as doors, tops and panels for cabinets, parquet floors and parts of furniture. They are also used in marquetry. Plywood consists of three or more layers of veneer. Normally, each is glued with its grain at right angles to adjacent layers for strength. Veneer beading is a thin layer of decorative edging placed around objects, such as jewelry boxes. Veneer is also used to replace decorative papers in wood veneer HPL.

This glossary of woodworking lists a number of specialized terms and concepts used in woodworking, carpentry, and related disciplines.

A floating floor is a floor that does not need to be nailed or glued to the subfloor. The term floating floor refers to the installation method, but is often used synonymously with laminate flooring. It is applied now to other coverings such as floating tile systems and vinyl flooring in a domestic context.

<span class="mw-page-title-main">Floor sanding</span>

Floor sanding is the process of removing the top surfaces of a wooden floor by sanding with abrasive materials.

<span class="mw-page-title-main">Sustainable flooring</span>

Sustainable flooring is produced from sustainable materials that reduces demands on ecosystems during its life-cycle. This includes harvest, production, use and disposal. It is thought that sustainable flooring creates safer and healthier buildings and guarantees a future for traditional producers of renewable resources that many communities depend on. Several initiatives have led the charge to bring awareness of sustainable flooring as well as healthy buildings. Below are examples of available, though sometimes less well-known, eco-friendly flooring options. The Asthma and Allergy Foundation of America recommends those with allergies to dust or other particulates choose flooring with smooth surfaces – such as hardwood, vinyl, linoleum tile or slate.

<span class="mw-page-title-main">Flexible stone veneer</span>

Flexible stone veneer is a veneer with a layer of stone 1 to 5 mm thick. Flexible stone veneers should not be confused with traditional stone veneers. It is used for both interior and exterior and especially where bending to a curved surface is required. Flexible stone veneers are made from various types of slate, schist, or marble.

<span class="mw-page-title-main">Sheet vinyl flooring</span> Type of vinyl flooring

Sheet vinyl flooring is vinyl flooring that comes in large, continuous, flexible sheets. A vinyl sheet floor is completely impermeable to water, unlike vinyl floor tile, which comes in stiff tiles, and vinyl planks, which come in interlocking strips. It is sometimes called linoleum after a visually similar product of different chemical composition.

References

  1. Taylor, Adam M. (2003). "Bamboo Flooring: Better than wood?". University of Tennessee. Archived from the original on 13 March 2018. Retrieved 6 March 2012.
  2. Vaglica, Sal (27 January 2009). "All About Engineered Wood Floors". This Old House. This Old House Ventures, LLC. Retrieved 1 July 2019.
  3. 1 2 "Engineered Enigmas: Know These Answers to Avoid Problems - Wood Floor Business Magazine". www.woodfloorbusiness.com. 29 November 2011. Retrieved 2019-02-06.
  4. Blanchet, Pierre; Beauregard, Robert; Cloutier, Alain; Gendron, Guy; Lefebvre, Marcel (May 2003). "Evaluation of various engineered wood flooring constructions". Forest Products Journal. 53 (5). Madison: 30–37. ISSN   0015-7473.
  5. "Commercial Vehicle Flooring". Thomes Canada.
  6. Peterson, Charles (2010). Wood Flooring: A Complete Guide to Layout, Installation and Finishing. Connecticut, US: Taunton Press Inc. ASIN   B017C1612K.
  7. "Vancouver Hardwood Flooring Blog" . Retrieved 28 March 2024.
  8. Lord, Noelle (22 February 2010). "A Clearer View of Floor Finishes". Old House Online. Cruz Bay Publishing, Inc. Retrieved 1 July 2019.
  9. Field, Ann (24 June 2003). "Wood Floors and Finishing". Michigan State University Extension. Michigan State University. Archived from the original on 28 July 2011. Retrieved 1 July 2019.
  10. Tschoepe, Ray (22 January 2015). "How to Hand-Scrape Wood Floors". Old House Online. Cruz Bay Publishing, Inc. Retrieved 1 July 2019.
  11. "Hand-Scraped vs. Smooth Floors". SFGate. Hearst Newspapers, LLC. 22 October 2014. Retrieved 1 July 2019.