Gyprock Ceiling Installation Perth

Sagging happens when screw spacing is too wide or adhesive wasn’t applied properly. We use 150mm screw centres across the entire sheet (not just at edges) and check every screw is set to the right depth with a setting tool. For ceilings with joists over 450mm spacing, we install additional noggins between joists so every sheet edge lands on solid timber. Adhesive is applied wet enough to bond but not so thick it takes days to cure — too much adhesive actually increases sag risk because the sheet flexes under the weight before it sets.

For existing sagging ceilings, we remove the failed section, check joist condition, sister any split or twisted timber, and re-sheet with current fastening standards. Patching a sag without fixing the frame just delays the problem.

10mm standard sheets are sufficient for most single-storey residential ceilings where joists are spaced at 450mm centres or closer. You need 13mm sheets when joist spacing exceeds 450mm, when the ceiling sits beneath a frequently-used upper floor (bedrooms, living areas), or when council sign-off requires acoustic or fire-rated performance.

If you’re renovating a two-storey home and footfall from upstairs is audible downstairs, 13mm acoustic sheets plus ceiling insulation batts make a measurable difference — typically 3–5dB reduction compared to standard 10mm. For fire-rated requirements (garage conversions, near stairwells), you’ll need Fyrchek or equivalent regardless of joist spacing.

We’ll measure your joist spacing during the site check and tell you which thickness you actually need — not which one costs more to supply.

We don’t remove asbestos ourselves — that requires a licensed asbestos removalist. But we coordinate the process so removal, frame inspection, and new ceiling installation happen in sequence without leaving the room exposed for weeks.

Typical process: you engage a licensed removalist (we can recommend contacts if needed), they test a sample to confirm asbestos presence, remove the ceiling under controlled conditions, and provide clearance certificate. Once cleared, we inspect the frame, rectify any issues, and install the new ceiling. Total downtime is usually 1–2 weeks depending on removalist availability.

Cost-wise: asbestos removal adds $40–$80/sqm to the overall job depending on ceiling size and access. It’s not optional if the existing ceiling contains asbestos — DIY removal is illegal and dangerous.

A standard 4m x 4m lounge room with rectangular layout, 2.4m ceiling height, and no existing ceiling removal typically costs $720–$1,040 for 10mm standard sheets supply and install (16sqm at $45–$65/sqm). If we’re removing an existing ceiling first, add $240–$400 for strip-out and disposal.

For 13mm acoustic sheets on the same room: $1,040–$1,440 (16sqm at $65–$90/sqm). For fire-rated Fyrchek sheets: $1,200–$1,520 (16sqm at $75–$95/sqm).

These are indicative ranges for straightforward installs. Bulkheads, raked ceilings, restricted access, or significant frame rectification will increase the quote. We price after site inspection so you get a realistic number, not a best-case estimate that changes once we see the actual joists.

We can supply and install ceiling insulation batts when we’re doing a full ceiling replacement (existing ceiling removed, new sheets going up). Batts go in after frame rectification but before sheets are screwed up — it’s the most efficient sequence.

For new builds or extensions where the ceiling cavity is already accessible, we typically coordinate with the builder or insulation subcontractor they’ve already engaged. We’re happy to do it if you’d prefer one point of contact, but it’s usually more cost-effective to use a dedicated insulation installer for large-area batt supply.

Either way, insulation should go in before the ceiling closes up — retro-fitting batts through manhole access is possible but slower and leaves gaps around penetrations.

Joint compound needs to fully cure before painting or the paint will crack along the seams. In Perth summer conditions (dry, 25–35°C days), joints are usually ready to prime within 48 hours of the final sand. In winter (cool, high humidity), allow 72 hours minimum.

We hand over the ceiling sanded and dusted, ready for your painter to apply primer + topcoat. If you’re painting yourself, use a proper ceiling primer (not wall primer or paint-and-primer combos) and apply two topcoats for even coverage — ceiling paint shows roller marks more than walls do.

Total timeline from sheeting start to paint-ready: 4 working days for a standard single-room ceiling, longer if bulkheads or multi-coat finishing is required.

If we find termite-damaged timber during ceiling removal or frame inspection, we stop work and document it. Termite damage isn’t something you patch and ignore — it needs to be assessed by a pest inspector to determine the extent of infestation, whether it’s active, and what structural repairs are required.

Once the pest report is in hand, we can sister damaged joists, replace sections where the timber is compromised beyond repair, and treat the frame with termite-resistant coatings before installing the new ceiling. This adds time and cost, but it’s not optional — installing a ceiling over termite-damaged framing just hides the problem until it gets worse.

We’ll give you an honest assessment of what needs doing, coordinate timing with the pest inspector, and quote the rectification work separately. No surprises, no proceeding without your sign-off.

Texture matching is tricky. Most pre-1990s Perth homes have spray-textured ceilings (stipple or knockdown finish), and the spray guns, mix ratios, and application technique all vary. We can get close with a similar texture, but exact matches are rare unless you’re texturing the entire ceiling area (not just one patched section).

For new installations, we finish to smooth — no texture. If you want texture applied, that’s a separate plasterer’s job after we hand over the sanded surface. Smooth ceilings are more contemporary, easier to maintain, and cheaper to paint.

If you’re renovating and texture mismatch bothers you, the cleanest solution is often to texture the entire ceiling (or room) rather than try to blend a new section into old texture. We’ll advise on what’s realistic during the quote.