Build plasterboard box to hide extractor pipe

[spiidey]

I need to build a small plasterboard box to enclose the extractor pipe in the picture below.

What is the correct way to do this i.e. what pieces of wood go where, etc? And what is the correct size of wood, and type of wood, to use?

I was thinking the following:-

1. One piece of plywood attached to facing wall, pitched at required height of plasterboard box (i.e. red line)
2. Second piece of plywood onto floor, at depth to allow plasterboard box to come out from wall the required distance (green line)
3. Third piece of plywood attached to where two pieces of plasterboard will join.

Is it best to nail the wood in (to plasterboard wall (1), floor (2), and plasterboard (3) or screw it in?

Finally, what is best tool to use to cut the carpet along where the green line is?

 

[foxhole]

Replace flexi with rigid venting which follows the line of the wall then no boxing needed. Looks a mess by the way.

 

[spiidey]

Replace flexi with rigid venting which follows the line of the wall then no boxing needed. Looks a mess by the way.

Could do that in medium term but need a quick and dirty just to get it done and hidden.

Back to plasterboard box then - any answers to queries above?

 

[foxhole]

Put a pair of mdf shelves above and below with mdf front on batons.Quick and easy and does not require carpet cutting.

 

[spiidey]

Would prefer just to build box.

 

[Nigel_Cro]

2" x 2" framing then cover.

Personally, I wouldn't use plasterboard I would use ply.

 

[foxhole]

What is this venting?

 

[jay679]

I would also go with foxholes idea. Building a box to the floor will require cutting or scribing the skirting, as well as cutting the carpet, then to make it look ok you would also need to cut and fit skirting to the box and a stained or painted top to finish it off.

Having said that, replacing with the correct rigid vent trunking against the wall is probably even easier.

Jay