Renovations, extensions & new linings.

The job in context

A renovation often needs new and existing surfaces to meet cleanly. A clear brief identifies what is being kept, removed and added. For an extension, granny flat, townhouse or heritage home, describe the actual work and the details that matter to your project rather than relying on a building label alone.

Guide to renovation and granny flat plastering

Plastering for a renovation or granny flat happens in stages. First, the plasterboard is fixed to the wall and ceiling frames. We install specific linings for wet areas or fire-rated boards where required. This creates the basic shell of the room before any finishing work begins.

The next stage is setting. This involves taping the joints and applying several coats of compound to create a flat surface. We also install cornices or create square set and shadowline edges. Each coat must dry fully before the next is applied and sanded back.

Planning and material requirements

Choosing the right materials depends on the room. Wet areas like bathrooms need moisture-resistant boards. For rooms where sound reduction is a priority, acoustic plasterboard is used. VJ panelling is another option for those wanting a specific wall style during a build.

Plastering fits into the build after the framing is complete and the electrical and plumbing rough-ins are finished. It must happen before flooring is laid or painting begins. Planning this sequence prevents damage to new walls and ensures a cleaner workspace.

Common challenges in extensions

A common issue in extensions is the join between new plasterboard and old walls. These surfaces often have different levels. The solution is to blend the two areas with setting and sanding to make the transition look like one continuous wall.

Cracks can occur where new additions meet the original structure due to natural house movement. Using the right taping methods and jointing techniques helps manage these areas. Patching and repairs are often needed on existing ceilings when walls are moved.

Preparing rooms for plastering

To prepare a room, remove all furniture and clear the floor space. This allows for the placement of ladders and sanding equipment. Covering existing floors and fixed cabinetry with plastic sheets helps keep the rest of the home clean during the sanding process.

Ensure all electrical outlets and light switches are roughed in and positioned correctly. Once the plasterboard is fixed, moving a socket requires cutting into the new wall and patching the hole, which adds time to the project.

Managing ceiling replacements

Replacing a ceiling often involves removing old linings to inspect the joists. If the existing ceiling is sagging or damaged, it is usually more effective to reline the entire area than to patch small sections. This ensures a level finish across the room.

When replacing ceilings in a renovation, consider if you want to change the edge detail. Moving from traditional cornices to a square set finish changes the look of the room and requires a different installation method during the setting stage.