Question 1

1. What is a metal C stud?

Accepted Answer

A metal C stud is a cold-formed steel component with a C-shaped profile. It’s used as a vertical support within metal stud systems for partition walls and wall linings.

Question 2

2. What’s the difference between C studs, I studs and U tracks?

Accepted Answer

C studs, I studs, and U tracks are different components within the same metal stud partition system, each with a specific role.

C studs are the standard vertical framing members used in most partitions. They have a C-shaped profile and provide general support for plasterboard and linings.
I studs are also vertical members but are designed for higher strength or taller walls. They offer greater rigidity than C studs without increasing the overall wall thickness.
U tracks are horizontal sections fixed to floors and ceilings. They form the top and bottom channels that hold the vertical studs in place.

In simple terms, C studs and I studs form the vertical structure of the wall, while U tracks define the position of the wall and keep the studs aligned. Both C and I studs are designed to fit into the same U track sizes within a system.

Question 3

3. How many C studs do I need?

Accepted Answer

The number of metal C studs needed depends on the wall length and the spacing between studs. In most UK drylining systems, studs are set at 400mm or 600mm centres, measured from the centre of one stud to the next. Tighter centres such as 400mm are often used with thinner boards or where more rigidity is needed.

A simple way to estimate how many c studs are need is:

Studs needed = (wall length ÷ spacing) + 1

For example:

A 3m (3000mm) wall at 600mm centres:
(3000mm ÷ 600mm) +1 = 6 studs total
A 4m (4000mm) wall at 400mm centres:
(4000mm ÷ 400mm) +1 = 11 studs total

The extra stud accounts for the end of the wall. Openings such as doors, corners, or intersections will also usually need additional studs.

Always check the project specification, as stud spacing and quantity may vary depending on wall height, performance targets, and system requirements.

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