Timber is a versatile natural product. Like any natural product careful selection is required when sourcing it. Below you will find informative facts about the types of wood K&D Joinery offer. This page will guide the user to make informative choices about what timbers suit a joinery item in specifics to your requirements. There are many different layers of quality with timber and with 37 years of experience in manufacturing timber based products we understand importance of the quality of the materials we use in production. Producing purpose made joinery that is to last and perform correctly in use, means the core of the product has to be correct to start with.
From the below timbers, all are available through our FSC® certification except Douglas Fir which is available through our PEFC™ Certification
Our Certificates for both, FSC® and PEFC™ can be viewed here
Category: Technologically enhanced softwood
Region / Grown: New Zealand
Age: Starts life as a fast growing Pine tree (Pirius radiata) grown in managed forests. It is harvested once fully matured at 30 years.
Use: Accoya has the highest class of durability at grade 1 and with an amazing warranty of 50 years guaranteed above ground and 25 years below ground guaranteed. This makes Accoya highly sought after for the manufacturing of windows, doors, cladding and decking.
Accoya has a low risk of shrinkage, swelling, jamming, insects and fungi damage, meaning future upkeep costs are kept to a minimum. It is also a top performing insulating wood so can reduce heating bills in the long run. They have a low carbon foot print and eventually become completely bio degradable.
Drying: The pine tree raw timber is introduced to the modification process as a plank or beam, the so called acetylation process happens using acetic acid. This process works by changing the cell structure and creates extremely dimensionally stable and durable wood. Every piece has been modified through to its core, making it a high performance wood.
Overview: Accoya® wood is created from readily available, sustainably sourced, non-durable woods that are modified to match or exceed the durability, stability and beauty of the very best tropical hardwoods. Manufactured using Accsys’ proprietary acetylation process, Accoya® wood is durable, stable and guaranteed for 50 years above ground and 25 years in ground or freshwater.
Accoya® also has the very best environmental credentials, acquiring Cradle to Cradle™ Certification at the elusive C2C Gold Level, and a C2C Platinum Level recognition for the most important C2C sustainable category; Material Health. It is also FSC® certified and contributes to several credits in BREEAM.
Accoya® wood is a perfect material for timber window frames and external wooden doors as it offers improved thermal insulation properties in comparison with commonly used hardwood and softwood wood species and it is more durable and dimensionally stable than the best tropical hardwoods. Accoya® wood has an enhanced coatings performance and can last twice as long, saving time, money and hassle. It also has a 50 year above ground guarantee, giving complete confidence that Accoya® windows and doors will stand the test of time. An Accoya® wooden window or door is developed to excel in external applications, even in challenging conditions.
The result is a product that is durable, dimensionally stable and constantly reliable, and offers industry leading environmental credentials.
Check out the Accoya website for more information.
Region / Grown: Sweden, Norway and Finland
Title: Engineered Softwood
Use: Engineered softwood is used a lot in the construction industry, producing furniture, joinery items such as cabinetry, windows and garden products. Engineered products only use the best clear grades of timber which enhances the natural strength and stability of the core material we are manufacturing our windows from. Engineered material also improves the thermal performance and security of our windows and assists in maintaining our finished products superb appearance. Tests have proven that an engineered component is 60% stronger than a piece of solid wood in the timber sections. This significantly improves stability and the performance of our Omnia micro porous 5 coat paint system is enhanced helping to keep the visual appearance to a high level for longer.
Colour: A light colour
Grain: Pattern of alternating wood grain
Overview: We use premium engineered material as our starting point. Engineered softwood is a very sustainable wood source wasting 25% less compared to solid wood, as there are no defects in the laminated wood. It is a environmentally conscious option.
Region / Grown: West Africa
Title: Sapele (Entandrophragma cylindricum)
Use: Sapele is versatile, dense West African hardwood. Its natural durability is ideal for exterior joinery like entrance doors and frames, French door sets and windows, external and internal joinery. It machines well and can be finished in a similar colour to Mahogany’s dark reddish brown. In a veneered state, it is the bedrock of much of today’s reproduction type furniture and is popular for internal cabinetry providing a Mahogany type finish.
Grain: Interlocked and sometimes wavy. Texture fairly fine.
Colour: A medium to dark reddish-brown wood typically with a well marked stripe or roe figure which shows to advantage on accurately quater-cut veneers. Occasionally logs with wavy grain yield veneers with a highly decorative fiddle-back figure.
Region / Grown: France, Germany, Austria and the Balkan states.
Title: European Oak (Quercus Robur)
Age: Up to 450 years old
Use: European oak is a dense very durable hardwood used for external joinery, front entrance doors and screens, French doors, panelling, gates and windows. Lower grades are traditionally used for large beams, gates and fence posts and constructional type projects. European Oak is a very good bending wood lending it well to staircases and handrails. The combination of durability and decorative appearance is valuable.
Grain: Straight grain with a medium to course texture. Quarter-sawn material has a characteristic ornamental silver grain due to the broad rays. Structure and quality vary widely according to the conditions of growth. Oak from central European countries is often of slow, even growth, uniform colour and straight grain, while that from northern countries is characteristically harder and tougher.
Colour: Light in colour
Drying: European oak dries very slowly.
Region / Grown: Eastern half of the united states and south-eastern Canada
Title: American White Oak (Quercus Alba)
Age: Up to 450 years old.
Use: Heavy structural use, Joinery both external and internal, stairs, handrails, furniture and flooring. Another dense oak not as durable as European, therefore not recommended for external use. Used as veneer for internal furniture and cabinetry. Selection can provide a quarter cut contemporary straight grain veneer and more decorative flowery crown cut veneers. Machines well and can be worked well and has medium movement.
Grain: Generally straight. Quarter-sawn material has a characteristic ornamental silver grain due to the broad rays. Structure and quality vary widely according to the conditions of growth. Oak from the Northern Appalachian area are usually grow slowly and producing a comparatively lightweight, mild type of wood. Oak from the southern states is typically fast grown with correspondingly wide growth rings, producing a harder and tougher timber.
Colour: Varies from pale yellow brown to mid-brown.
Drying: American white oak dries very slowly.
Region / Grown: North America, British Columbia by the coast and interior
Title: Douglas Fir (Pseudotsuga Menziesii)
Age: At least 500 years old
Use: Primarily used in construction and building, Douglas Fir is a high quality wood for the manufacturing of windows, doors, cabinetry, furniture to flooring, boats and ships. It is a very workable wood, is machined well and dries quickly with little tendencies for dimensional movements. It holds glue easily and has good screw and nail holding ability.
Grain: Douglas Fir has a fine to medium texture, has a straight grain and is non- porous.
Colour: It is normally a light reddish colour and takes staining and finishing’s well.
Drying: Douglas Fir is dried according to the end user or customer specification. Kiln Drying inhibits the natural staining of the wood, improves the strength and stiffness, enhances appearance and increases the resistance to decay and attack by insects and rot.
Category: Dense Hardwood
Region / Grown: Eastern United States and Canada.
Title: American Black Walnut (Juglans Nigra)
Age: Beyond 200 years.
Use: Popular for high quality internal cabinetry or decorative veneers, it polished and finishes very well. It is used in solid form as well in doors and internal screens.
Grain: Usually straight, sometimes wavy or curly. Texture rather coarse.
Colour: Rich dark brown to purple, deepening with age. Quite uniform in colour.
Drying: Dries rather slowly
Region / Grown: Eastern side of the United States.
Title: Tulip Wood (American Poplar)
Use: Tulip wood is excellent stable economical hardwood, ideal for internal joinery, doors and cabinetry. Tulip takes paint very well and tends to be finished rather than clear sealed as the sap wood produces a green streak in the pale yellowish colour. It carves well and machines well and is classed as a non durable hardwood so only used internally.
Grain: Tulip wood has a straight grain and fine texture.
Colour: The sapwood is white and the heartwood is variable in colour, ranging from olive- green to yellow or brown and maybe streaked with steel blue tones.
Drying: Dries easily and well with little degrade.
Region / Grown: across Europe, North America and Northern Africa.
Title: Mapel wood / Mapel Rock (Acer Saccharum)
Age: 130 years and over.
Use: Mapel wood is a timber with good strength properties and resistant to wear and which finishes and turns well. Suitable for furniture and panelling.
Grain: Usually straight but sometimes wavy or curly. Fine brown lines marking the growth rings give a distinctive figure on plain-sawn surfaces. Texture is fine and even.
Colour: Creamy white, generally with a reddish tinge. Occasionally large trees have a dark brown heart.
Drying: Dries slowly but without difficulty.
Region / Grown: North America and its native Europe.
Title: Beech, European (Fagus Sylvatica)
Age: Up to 400 years.
Use: Beech is the UK is one of the hardwoods that is most used by the furniture industry. The timber is heavy and strong with good turning and bending properties. In furniture manufacturing it is used for cabinetry work, including kitchens, panelling, chairs and desks. It is used to make musical instruments and flooring also.
Grain: Usually straight with broad rays distinctively visible. Beech wood texture is fine and even.
Colour: Whiteish to very pale brown, darkening on exposure to slightly reddish-brown. Some trees show a darker coloured core or ‘red heart’, often with dark veining.
Drying: Beech dries well and fairly rapidly but has a risk of shrinkage.