Which is stronger C24 or C16?

C24 boards have fewer defects than C16 graded timber and the timber is therefore stronger and more resilient than C16 boards. You will also find that C24 boards have a more uniformed and neat appearance as there are fewer physical imperfections on the surface of the board.

What’s the difference between C16 and C24 grade timber?

C24 timber is the superior cousin of C16. This grade is also kiln dried and used in construction products. It is more superior in terms of its properties such as strength, resilience and appearance with very few defects if any. C24 timber costs slightly more than C16.

What does C24 and C16 mean?

According to this system, the ‘C’ grading simply means conifer, the type of tree the timber is made from, while the number denotes its strength. The higher the number, the better the quality of timber, which means, yes, C24 timber is superior to C16.

Is C24 timber suitable for outdoor use?

C24 is often referred to as structural grade timber so it is one of the strongest gradings available to buy before you get into the realm of specialised timber products. Stronger than C16 timber, it can handle heavier loads which makes it an ideal choice for decking subframes and timber frame construction.

Is C24 timber suitable for decking?

C24-graded decking boards are typically used where higher loads or wider spans are required. The main advantages of using C24-graded deck boards are that a wider rafter centre can be used in the same section as a board graded to C16, and a smaller deck board can be used on the same centres.

Is C16 suitable for floor joists?

C16 timber is kiln dried, to minimise the amount of moisture within the wood, and is most commonly used in internal construction projects such as walls, floor and roof joists.

Should C24 timber be stamped?

What you need to know… If you can’t see a stamp on the wood, don’t use it. All graded timber will be stamped with C16 or C24. If you re-saw the timber within the cross section or thickness, then the strength grade of the timber can be compromised.

What timber is used for joists?

C16 timber
C16 timber is kiln dried, to minimise the amount of moisture within the wood, and is most commonly used in internal construction projects such as walls, floor and roof joists.

What is the best timber for decking joists?

What Type of Lumber Should You Use for Joists? You’ll want ground-contact use wood for your deck frame. For joists, douglas fir and southern yellow pine are some of the strongest wood types.