|
| Brand Name: | SUNHOUSE |
| Model Number: | 1220x244m-12mm |
| MOQ: | 800 |
| Payment Terms: | L/C,T/T |
Most moisture failures in moisture resistant drywall installations are installation failures, not product failures. The sequence below is the one that keeps a wet-area wall performing from handover to year fifteen.
Store panels flat and off the ground, under cover. Cut with a fine-tooth blade and seal every exposed cut edge and core with a moisture-resistant sealer before installation in wet zones. This single step prevents the most common failure we see on site, and it costs almost nothing.
Use corrosion-resistant screws at approximately 200 mm centres in wet areas and 300 mm in dry zones. Recess heads just below the surface without breaking the paper. Butt joints should be tight but not forced; a 1 mm gap improves compound penetration.
Use a setting-type compound with embedded tape in wet areas. Standard drying-type compound is unsuitable where sustained humidity is expected. Reinforce internal corners with tape and use pre-formed corner beads at external corners.
Seal fasteners, joints and cut edges, then apply the waterproofing membrane across the whole wet-zone substrate before tiling. The board resists moisture; the membrane stops liquid water. Treating one as a substitute for the other is the mistake that shows up two years later.
| Check | Acceptance Criteria |
|---|---|
| Cut edges | Sealed, no exposed core |
| Screw spacing | 200 mm in wet zones; heads not torn |
| Joint treatment | Setting compound plus tape, fully cured |
| Floor gap | 10–13 mm, sealed |
| Waterproofing | Continuous membrane, lapped to manufacturer's instructions |
The points above are drawn from site reports on hotel, hospital and residential projects. On those jobs, the recurring defects were consistent — unsealed cut edges, over-driven screws, missing membranes above shower heads — and none of them originated with the board. Installation guidance we issue follows ASTM C840 and GA-216, and where a local code is stricter, the local code governs. Photographs of a completed substrate can be reviewed before tile is applied, which is a far cheaper checkpoint than corrective work after tiling.
Only with a waterproof membrane between board and adhesive in wet areas.
Yes in wet zones. Sealing the fixing prevents moisture ingress at that point.
Joint compound must be fully cured — typically 24 to 72 hours depending on compound type and site humidity.
No. Adhesive is not a continuous membrane; a membrane system is required in wet zones.
Need the full installation manual or a contractor briefing for your project? Contact us with your wall build-up.
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