stud wall

How to Build a Stud Partition Wall: A Complete DIY Guide

Gabriel

04 Dec 2025 — 3 min read

Building a stud partition wall is one of the most satisfying home improvement projects — you can genuinely divide a large room, create a study, add an en-suite, or improve the layout of a house in a single weekend. With modern materials and fixings, the technical skill required is modest, and the result is a wall that looks identical to those built by a professional.

Does It Need Building Regs or Planning Permission?

Internal partition walls generally don't require Building Regulations or planning permission, with two significant exceptions:

If creating a new habitable room (e.g. a bedroom) from a larger space, Building Regs Part F (ventilation) and Part L (energy) may apply — particularly relating to window provision and heating.
If affecting a structural wall — this guide covers non-load-bearing partitions only. Never remove or alter a structural wall without structural engineering input.

If you're in a Conservation Area, flat, or leasehold property, check with your landlord or local planning authority first.

Materials Required

100 × 50mm C16 timber for sole plate, head plate and studs (or 75 × 50mm for non-acoustic partitions)
Plasterboard — 12.5mm standard (or 15mm for better sound isolation, or Soundbloc for acoustic requirements)
50mm acoustic mineral wool (Rockwool or Knauf Earthwool) for filling the stud cavity
75mm plasterboard screws
Frame fixings (anchor bolts for concrete floor; timber screws for timber floor)
Joint tape and jointing compound (for skim or tape-and-joint finish)
Nail gun or screw gun (a screw gun makes boarding much faster)

Step 1: Mark Out and Fix the Sole Plate

Mark the wall position on the floor using a chalk line. Check that the wall will be plumb — use a plumb bob or laser level to transfer the mark to the ceiling directly above. Mark the head plate position on the ceiling.

Fix the sole plate (100 × 50mm timber) to the floor with frame fixings at 600mm intervals. On concrete: drill with a 10mm masonry bit and use M8 frame bolts. On timber floors: use 5 × 100mm screws into the joists below — locate joist positions with a detector or by probing.

Leave a gap in the sole plate for any doorway opening — you'll fit the door lining and header separately.

Step 2: Fix Head Plate and Mark Stud Positions

Fix the head plate to the ceiling in the same way — either into joists (if running parallel to joists, one plate is unlikely to hit any, so use noggings between ceiling joists as fixing points) or directly if running perpendicular. Mark stud positions at 400mm centres on both plates, measuring from the same starting wall — this ensures studs align vertically.

Step 3: Fit the Studs

Measure each stud individually — floor and ceiling heights vary. Cut studs at a very slight angle (1–2°) so they can be tapped into place snugly between sole and head plate. Fix with 75mm nails or screws at an angle (skew-nailing) or with purpose-made joist hanger clips. Fit noggings (horizontal timbers) at mid-height between studs to prevent the boards from bowing and to provide additional fixing points.

Step 4: First Fix Electrics (If Required)

Before boarding, chase any cables through the wall. In a stud wall, cables run through holes drilled in the centre of each stud (use a 20mm flat bit) — this keeps them 25mm from each face, which is the minimum required by BS 7671 to protect against being nailed through. Fit back-boxes for any sockets or switches at this stage.

Step 5: Insulation

Push 50mm acoustic mineral wool (Rockwool RWA45 or equivalent) between the studs. It should fit snugly without compression — compression reduces acoustic performance. For a partition between a bedroom and a living room, insulation is essential. Between a bedroom and a bathroom, consider two layers of plasterboard on each side as well as insulation.

Step 6: Boarding

Work from a corner or from a fixed edge. Fix boards vertically (less wastage) or horizontally — either is acceptable. Drive 75mm drywall screws at 150mm intervals along studs and at 200mm intervals along the head and sole plates. Countersink the screw heads just below the surface (a dimpling depth on the screw gun handles this automatically).

For a skim-plaster finish: joints don't need taping as the skimming coat covers everything. For a tape-and-joint finish (faster, no plasterer needed): fill joints with jointing compound, bed tape, apply further coats, and sand between coats. This is a skill that improves with practice but produces excellent results.