How to build a wall?

Astro

i want to estimate materials and cost to build a wall similar to this photo? approximately 3M x 5M

JacobZ

Welcome to the Bunnings Workshop community, it is wonderful to have you with us.

There are quite a few variables that can alter the material cost, such as the type of framing used, the height and width of the door, the type of mouldings used, and the plaster and paint that are used. This makes it extremely difficult for me to give you a specific dollar figure, so I will try to give you a generic list that will lay things out so you can estimate based on my measurements.

When doing what is referred to as a "take-off", tradies will estimate using lineal metres for products that are long and thin, like timber framing and timber mouldings and square metres for things like plasterboard and paint.

For a wall that is 3m tall by 5m wide with a door in the middle, you will need a top and bottom plate, 12 full-height studs, two king studs (a bit taller than the height of the door), a header which is the width of the door, noggins and a cripple stud (sits above the door).

Using this framing layout as a guide, you would need approximately 57 lineal metres of framing. It's a good idea to allow 10% for wastage and errors, so working with around 62 lineal metres of framing is a good start.

For plasterboard or sheet material, you'd work out the square meterage of the frame and multiply it by two because you need plasterboard on both sides of the frame. As the frame is 3 x 5 metres, this would be 15 square metres per side, totalling 30m. If you wanted to, you could work out the area of the door opening, double it, and remove it from the total, but for simplicity's sake, work with the idea of 30 square metres of plasterboard.

If you are going to install insulation, then this would also need to be considered. You'd need roughly 15 square metres.

You'd then need a door jamb. They come in different widths for different framing sizes. This 112 x 18mm Door Jamb Set is for use with 90mm framing, and this 92 x 18mm Door Jamb Set is for use with 70mm framing.

You'll then need to select a door and hardware. This 820 x 2040 x 35mm Internal Door is a fairly common size. You'll then need to select a door handle and hinges to go with it.

There are also architraves for the door. For a 2040x820 door, you'll need a piece for each side and the top of the door, which works out to about 5 lineal metres per side, totalling 10 lineal metres.

If you are using skirting boards, which you typically would, although they are not shown in your photo, you'd need about 10 lineal metres.

You'll also need to consider things like framing and trim nails, plasterboard screws, plasterboard adhesive, plaster, caulk, timber filler, primer, and paint, alongside any additional tools you'd need to purchase to carry out the work.

To break it down, you'll need -

Approximately 62 lineal metres of framing
Approximately 30 square metres of plasterboard
Approximately 15 square metres of insulation
Approximately 10 lineal metres of architrave
Approximately 10 lineal metres of skirting (if it is being used)
A door jamb
A door
Door hardware (handle and hinges)
Nails (framing and finish)
Plasterboard screws and plasterboard adhesive
Plaster (base coat and top coat)
Caulk and fillers
Primer and paint.

There is a fair bit that goes into it, but I am fairly confident this list covers everything.

Selecting specific materials will help to pin down a specific price for the work. I would be happy to assist with this if you'd like me to.

Let me know what you think and if you'd like further assistance, please don't hesitate to ask.

Jacob