This article shows the MGO board installation method for interior partition walls. Please note that there will be three parts and this is only the part 3.
10. Joint Treatment
10.1 Mix joint compound and let it sit for 15 minutes before filling joints (note the compound’s curing time).
10.2 Ensure joints are clean and free from debris.
10.3 Fill joints with compound, pressing it to be level with the board surface.
10.4 Once cured, apply a second layer at least 50mm wide from the edge.
10.5 Adhere joint tape to the joints and smooth with a putty knife, ensuring no air bubbles between the tape and compound.
10.6 Align the centerline of the joint tape with the centerline of the joint to ensure equal adherence on both adjacent boards.
10.7 Spread any compound squeezed out from the edges of the joint tape over the tape itself, smoothing and pressing it firmly so the tape is embedded in the joint compound.
10.8 Allow the layer to set according to the setting time indicated on the joint compound packaging.
10.9 Cover the first joint treatment with a layer of joint compound, smoothing it level with the board surface. Extend the width by at least 50mm on each side beyond the original joint.
10.10 Allow this layer to set (refer to the setting time on the joint compound packaging).
10.11 Apply a third layer of joint compound over the previous treatment, smoothing it level with the board surface. Extend the width by at least 50mm on each side beyond the previous layer. Smooth the compound to level with the chamfered edges.
10.12 Once cured, lightly sand the surface with sandpaper until it is even with the board surface.
10.13 For cut edge joints, extend each layer of joint compound coverage by an additional 100mm.
11. Corner Treatment
11.1 Use a grinding tool to smooth uneven cut edges.
11.2 Apply joint compound along the corner and on both sides.
11.3 Fold corner tape along its centerline, placing it over the corner. Press firmly with trowel to secure with the compound.
12. Screw Head Treatment
Apply joint compound directly to screw heads, pressing it firmly and smoothing the surface.
13. Material Management
13.1 Based on the characteristics of MGO boards and light steel keels, materials management should be reinforced in packaging, loading and unloading, transportation, secondary handling, and storage.
13.2 The boards and keels should be transported and placed indoors, where they will be installed, using mechanical lifting before the outer walls are fully enclosed.
13.3 Materials should be stored in a dry indoor environment. Packaging should remain intact until use to prevent quality deterioration.
13.4 Materials should be stored and handled according to the manufacturer’s instructions, and should not be placed directly on the ground.
13.5 MGO boards should ideally be installed upon arrival and should not be stored onsite for extended periods.
14. Quality Inspection Instructions
14.1 The installation quality of concealed pipelines should be inspected before the boards are installed.
14.2 Check whether materials, placement, and structure meet the design requirements.
14.3 Ensure that the boards are flat, clean, undamaged, with joints that are smooth and tightly fitted, and that edges and corners are straight.
14.4 The work should comply with relevant design and construction acceptance standards and requirements.
