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| Marchio: | SUNHOUSE |
| Numero di modello: | 1220x244m-12mm |
| MOQ: | 800 |
| Termini di pagamento: | L/C, T/T |
Moisture resistant gypsum board is designed to perform better than standard wallboard in suitable humid interior applications. It is not designed to be transported, unloaded or stored in a wet condition. Export buyers should control pallet design, wrapping, container condition, condensation, cargo restraint, warehouse stacking and damage inspection from the factory loading area to the final installation floor.
Boards, timber pallets, edge protection and wrapping materials should be dry before the shipment is closed.
Panels should be stacked flat on level, aligned supports that prevent sagging, edge crushing and uneven loading.
Container moisture, temperature changes and wet dunnage can produce damaging condensation during long-distance transport.
Wet, stained, distorted or delaminated panels should be isolated and assessed before acceptance or installation.
Moisture resistant treatment reduces water absorption under defined product conditions. It does not authorize rain exposure, shipment in a leaking container, contact with wet timber, outdoor storage without protection or installation while the panels remain damp. Uncontrolled moisture can damage facings, soften edges, increase board weight, produce distortion and create conditions favorable to mold growth.
A moisture resistant board should arrive dry and undamaged. The words moisture resistant, water resistant or mold resistant should never be used to justify wet loading, rain exposure, direct floor contact or acceptance of panels affected by container condensation.
The packaging should protect board faces, tapered edges, ends and corners during forklift handling, road movement, sea transport and unloading. Wrapping should provide useful moisture protection without concealing already wet material.
Pallets should remain stable during acceleration, braking, vessel movement and terminal handling. Blocking, bracing and load distribution should prevent sliding, leaning and impact against container doors or walls.
Long voyages may expose the container to large temperature changes. Moisture carried by cargo, timber pallets, air and packaging can condense on the roof or walls and drip onto the board stacks.
The destination warehouse should provide a dry floor, level supports, sufficient aisle space, roof-leak control and a storage layout that avoids uneven stacks or repeated forklift contact.
| Moisture Source | How Damage Occurs | Possible Board Condition | Required Control |
|---|---|---|---|
| Rain During Loading | Exposed board edges and pallet tops become wet before the wrapping or container doors are closed. | Stains, soft edges, increased weight and paper damage. | Load only in a covered area and stop loading during rain when effective weather protection is unavailable. |
| Wet Pallets Or Dunnage | Moisture transfers from timber supports into the bottom boards or increases humidity inside the closed container. | Bottom-face staining, edge swelling and localized mold risk. | Use dry, suitable pallets, bearers and bracing material. |
| Leaking Container | Rain or seawater enters through roof holes, damaged seals or defective door gaskets. | Concentrated wet areas, collapsed packaging and board distortion. | Inspect the roof, sidewalls, doors, seals and floor before loading. |
| Container Condensation | Warm humid air reaches a colder surface and forms droplets on the roof, walls or packaging. | Water marks, damp top boards, mold, loose labels and weakened outer packaging. | Control moisture sources, loading conditions, dunnage and the selected condensation-management method. |
| Wet Warehouse Floor | Pallets or boards contact cleaning water, roof drainage or floor-level flooding. | Wet bottom layers and damaged pallet supports. | Store off the floor on level supports in a dry area. |
| Roof Or Pipe Leak | Water repeatedly falls onto the same pallet or stack. | Severe localized soaking, paper separation and deformation. | Inspect warehouse roofs and services and isolate affected stock. |
| Outdoor Storage | Rain, wind, sunlight and ground moisture affect the package. | Torn covers, trapped condensation, sagging and edge damage. | Use indoor storage whenever possible; apply full emergency weather protection when temporary outdoor storage is unavoidable. |
| Installation In A Wet Building | Construction humidity, wet concrete and missing ventilation expose panels before the building is dry. | Warping, joint problems, mold risk and delayed finishing. | Complete enclosure and drying measures before installation. |
Packaging should be designed around board dimensions, pallet weight, loading method, transport route, number of handling stages and destination climate. The following layout is a general procurement framework rather than a universal pallet design.
The exact pallet material, number of bearers, strap position, wrapping type and bracing method should be engineered for the board size, stack height, gross pallet weight and handling equipment.
Timber pallets and bearers should not introduce excess moisture into the wrapped stack or closed container.
All bearers should form one flat plane so that the board stack is not forced to bridge over uneven supports.
When pallets are stacked, vertical support points should align to transfer loads rather than bending the lower stacks.
Fork openings should suit the equipment and allow full fork insertion without contacting board edges or bottom sheets.
Pallets should support the declared gross weight during lifting, stacking, transport vibration and destination handling.
The package should reduce the risk of forks, straps or adjacent pallets directly crushing tapered edges and corners.
Timber packaging should satisfy the destination's applicable phytosanitary and marking requirements.
A suitable separation layer can reduce contact with pallet moisture, dirt, splinters and localized abrasion.
Heavy board stacks placed on insufficient or misaligned supports can develop waves, broken edges or bottom-board deformation. Increasing plastic wrap does not correct an inadequate pallet structure.
| Protection Item | Main Function | Incorrect Practice | Buyer Requirement |
|---|---|---|---|
| Corner Protectors | Spread strap pressure and protect board corners. | Straps applied directly onto soft board edges. | Use protectors with sufficient length and compression strength. |
| Long-Edge Protection | Reduces crushing of tapered or square edges during handling. | Exposed edges rubbing against container walls or pallets. | Protect critical edges while preserving stable stacking. |
| Top Sheet Or Cap | Shields the upper board from straps, dirt and minor droplets. | Thin loose plastic placed directly on an uneven stack. | Use a flat top protector compatible with the wrapping system. |
| Bottom Protection | Separates panels from pallet surfaces and floor contamination. | Bottom board resting on damp, rough or stained timber. | Use dry supports and an appropriate bottom protection layer. |
| Protective Wrap | Reduces dust, splash and limited moisture exposure. | Wrapping wet boards and trapping moisture inside. | Wrap only dry material and define top, side and bottom coverage. |
| Strapping | Maintains package integrity during handling. | Excessive strap tension cutting through protectors or boards. | Define strap number, position, tension and protector type. |
| Pallet Label | Provides product identification and traceability. | Labels hidden, damaged or detached by condensation. | Use durable labels in accessible, protected locations. |
A dry container can still develop condensation during transport. Temperature changes may cause moisture in the enclosed air, timber, packaging or cargo to condense on colder steel surfaces. Droplets can accumulate on the roof and fall onto the top pallet layers.
Moisture may come from humid loading air, wet timber, damp packaging, wet cargo or loading during rain.
Day-night cycles, changing climates and vessel position can heat and cool the container repeatedly.
Moist air contacting a colder container wall or roof may release water as condensation.
Condensation can collect on the roof, walls, packaging or other cool surfaces.
Droplets may stain the top boards, weaken packaging, damage labels or create mold-prone damp areas.
Do not place recently wetted, stained or visibly damp panels inside a sealed export package.
Timber supports can become a significant moisture source when loaded in a wet or poorly conditioned state.
Prevent rain and high surface moisture from entering the package during loading.
A recently washed container should be fully dry before gypsum board loading begins.
Desiccant quantity and placement should reflect transit duration, route, container volume and moisture risk.
Top covers, liners or other approved measures may reduce direct contact between droplets and the cargo.
Damp cartons and paper accessories can contribute moisture and lose strength during transit.
Photographs and environmental records help verify that cargo and packaging were dry when loaded.
Moisture absorbers are a supplementary control. They should not be used to justify loading wet boards, wet pallets or a container with defective seals, roof holes or standing water.
| Loading Item | Main Requirement | Potential Failure | Recommended Control |
|---|---|---|---|
| Weight Distribution | Distribute cargo weight evenly across the container floor. | Local floor overload or unstable pallet rows. | Prepare a pallet layout using actual gross weights. |
| Pallet Alignment | Keep stacks square and parallel to the container. | Leaning pallets and uneven restraint pressure. | Check alignment after every loading stage. |
| Forklift Handling | Fully insert forks and lift the pallet evenly. | Broken bottom boards, crushed edges or pallet splitting. | Use suitable fork length and trained operators. |
| Side Clearance | Provide enough clearance for loading without uncontrolled movement. | Edge abrasion against corrugated container walls. | Use protective separation and appropriate blocking. |
| Longitudinal Restraint | Prevent pallets moving toward the doors during braking or vessel motion. | Door pressure, pallet collapse and unsafe unloading. | Use engineered blocking, bracing, airbags or other approved restraint. |
| Vertical Stability | Keep stacks flat and prevent leaning. | Pallet tipping or board edge damage. | Avoid unstable high stacks and align vertical support points. |
| Door-End Protection | Maintain safe clearance and restraint at the container doors. | Cargo falling or pushing outward when doors open. | Install a suitable final barrier and open doors cautiously at destination. |
| Mixed Cargo | Separate gypsum panels from wet, leaking, sharp or contaminating goods. | Stains, punctures, odor contamination and uneven loading. | Approve the complete mixed-loading plan before shipment. |
Pallet wrapping helps maintain package integrity, but it should not be expected to stop heavy board stacks from moving inside the container. Blocking and bracing must address the actual cargo mass and transport forces.
| Transport Condition | Main Risk | Protection Priority |
|---|---|---|
| Covered Local Truck | Braking, vibration, forklift damage and short-term rain exposure. | Secure pallets, cover the load and avoid loading damaged packages. |
| Curtain-Side Truck | Water entry through side curtains and insufficient load restraint. | Confirm curtain condition, floor dryness and independent restraints. |
| Open Truck | Direct rain, sunlight, dust and wind damage. | Avoid for unprotected gypsum panels; use complete weather protection. |
| Dry Shipping Container | Condensation, long transit, terminal handling and cargo movement. | Use dry packaging, container inspection, condensation controls and engineered bracing. |
| Rail Transport | Repeated impact, vibration and long inland exposure. | Strengthen pallet restraint and protect board edges and corners. |
| Repeated Transloading | Multiple forklift contacts and package opening. | Use durable pallets, clear labels and defined handling procedures. |
Record dents, holes, seal condition, container number and any signs of water leakage before opening.
Cargo may have shifted toward the doors. Stand clear and control the first door during opening.
Check the roof, walls, floor, packaging and pallet tops for droplets, stains or wet areas.
Record pallet positions, bracing, damaged wrapping, leaning stacks and visible water marks.
Release airbags, timber and other restraints without allowing the board stacks to move suddenly.
Match fork length, capacity and entry direction with the pallet design.
Separate wet, stained, crushed or distorted packages before moving conforming stock into storage.
Record quantities, batch codes, condition, photographs, inspection findings and claim notifications.
Store panels flat on level supports in a weather-tight, ventilated building with a dry floor, controlled roof drainage and enough aisle space for safe handling.
Short-term holding may be acceptable where the area is fully covered, dry and protected from wind-driven rain, floor water and vehicle impact.
Outdoor storage should be avoided. When unavoidable, panels require flat level support above the ground and complete weather and sunlight protection without trapping existing moisture.
| Storage Method | General Position | Main Risk | Recommended Practice |
|---|---|---|---|
| Flat On Level Supports | Preferred storage method for full-size gypsum panels. | Sagging can occur if supports are uneven or incorrectly positioned. | Keep supports level, dry and vertically aligned. |
| Flat Directly On Floor | Not recommended. | Floor moisture, dirt and forklift damage. | Raise the stack on suitable level supports. |
| Large Stack Leaning Against Wall | Unsafe and unsuitable for normal warehouse storage. | Tipping, edge damage and board bowing. | Return panels to a stable horizontal stack. |
| Short-Term Individual Sheet Handling | May occur during controlled manual movement. | Edge breakage and unsafe falling sheets. | Use trained personnel and move sheets with suitable support. |
| Mixed Pallet Sizes | Requires careful planning. | Point loading, overhang and unstable stacking. | Do not place smaller supports beneath unsupported larger panels. |
Water exposure should be evaluated according to its source, duration, affected area and the physical condition of the panel. Drying a board does not automatically restore original strength, dimensions, paper bond or approved product condition.
| Observed Condition | Possible Cause | Recommended Action |
|---|---|---|
| Minor Dust On Intact Wrap | Normal warehouse or transport exposure. | Clean and inspect the package before opening. |
| Torn Wrap With Dry Boards | Forklift contact or abrasion. | Inspect faces, edges and corners; repackage if acceptable. |
| Localized Corner Damage | Pallet impact or excessive strap pressure. | Separate damaged sheets and assess usable dimensions. |
| Water Stains On Packaging | Condensation, rain or warehouse leak. | Open under controlled conditions and inspect board surfaces and edges before acceptance. |
| Damp Top Boards | Container roof condensation or water entry. | Isolate the pallet and obtain technical assessment before installation. |
| Wet Bottom Boards | Wet floor, damp pallet or standing water. | Remove from conforming stock and assess the full lower layers. |
| Soft Or Swollen Edges | Prolonged moisture exposure. | Reject affected sections or boards according to project requirements. |
| Paper Delamination | Water exposure, poor bond or repeated wetting. | Do not install affected panels. |
| Permanent Bow Or Wave | Uneven support, wetting or excessive stack pressure. | Isolate and assess; drying may not remove permanent deformation. |
| Visible Mold Or Odor | Extended damp storage or contamination. | Isolate immediately and follow project, health and manufacturer assessment procedures. |
| Unknown Water Source | Possible contaminated water or mixed cargo leakage. | Do not use until the source and product condition are confirmed. |
Panels may dry after an incident but retain soft edges, distortion, paper separation, staining or reduced fastener performance. The cause and extent of exposure should be reviewed before the stock is released for use.
| Document | Information To Include | Purchasing Purpose |
|---|---|---|
| Packing List | Pallet numbers, board quantity, size, thickness, net weight and gross weight. | Supports loading control and destination reconciliation. |
| Pallet Specification | Pallet dimensions, bearer arrangement, material, load capacity and packaging method. | Confirms handling and stacking design. |
| Product Certificate | Product standard, classification, manufacturer and shipment identification. | Connects the shipped material with approved technical documents. |
| Batch Inspection Record | Dimensions, physical checks, moisture condition and packaging inspection. | Demonstrates pre-shipment conformity. |
| Container Inspection Record | Container number, condition, cleanliness, dryness and photographs. | Records the condition before cargo loading. |
| Loading Photographs | Pallet positions, restraints, desiccants, final door area and seal. | Helps resolve transport and receiving claims. |
| Timber Packaging Record | Applicable treatment and marking information. | Supports destination import and quarantine requirements. |
| Handling Instructions | Flat storage, forklift method, weather protection and wet-board isolation. | Reduces damage during destination handling. |
Product performance is incorrectly used to justify wet loading.
Moisture becomes trapped inside the sealed package.
Pallets add humidity and stain the bottom board layers.
Existing holes or previous leakage remain undiscovered.
Residual floor and wall moisture enters the sealed shipment.
Wet cargo and defective containers remain uncorrected.
Excess tension damages corners and tapered edges.
Heavy stacks develop waves and bottom-board deformation.
Heavy pallets can move toward the container doors.
Exposed edges become wet before doors are closed.
Moisture, leakage or contamination transfers between products.
Shifted pallets create unsafe unloading conditions.
Ground moisture and rain affect the lower boards.
Boards can bow, fall or suffer edge damage.
Damage extent and claim quantities become difficult to verify.
Hidden softness, deformation or delamination enters the project.
Moisture Resistant Gypsum Boards Shall Be Supplied Dry And Undamaged, Stacked Flat On Dry Level Export Pallets With Adequate Bottom Support, Corner And Edge Protection, Top And Side Moisture-Resistant Covering, Controlled Strapping, Durable Product And Batch Labels, And Suitable Blocking And Bracing Inside A Clean Dry Watertight Shipping Container. Wet Boards, Wet Timber Supports And Rain-Exposed Packages Shall Not Be Loaded.
Gypsum Boards Shall Be Unloaded Using Suitable Forklift Equipment, Inspected Before Acceptance And Stored Flat On Level Supports Inside A Dry Weather-Tight Building. Panels Shall Be Protected From Rain, Standing Water, Direct Sunlight, Roof Leaks, Floor Moisture, Impact, Uneven Stacking And Unsupported Overhead Loads.
No. Moisture resistance does not permit wet shipment. Boards, pallets, dunnage and containers should be dry before loading.
No. Wrapping is only one protection layer. Pallet support, container condition, condensation control and cargo restraint are also required.
Moisture inside the container can condense during temperature changes and drip from the roof or walls onto the packages.
No. They can reduce risk when correctly selected, but they cannot correct wet cargo, wet pallets, severe moisture sources or a leaking container.
Full-size board stacks are generally intended to be stored flat on level supports. Leaning stacks can bow, fall and damage edges.
Indoor storage is preferred. Temporary outdoor storage requires flat off-ground support and full protection from weather and direct sunlight.
Not automatically. Inspect for softness, swelling, distortion, paper separation, mold and loss of product integrity. Follow manufacturer and project requirements.
No. Wet timber can transfer moisture to the bottom boards and increase humidity inside the closed container.
No. Excessive or poorly positioned straps can crush board edges. Strap quantity, tension and protection should match the pallet design.
Stretch film helps maintain package integrity but is not a substitute for blocking, bracing or other cargo restraint.
Check the container exterior, door seals, cargo position, roof condensation, packaging, pallet condition, water marks, board damage and batch quantities before acceptance.
Confirm pallet structure, dry packaging, edge protection, wrapping, strapping, container inspection, condensation controls, loading restraint, destination storage and wet-board claim procedures.
Provide the board dimensions, pallet quantity, gross weight, loading method, shipping route, destination climate, container type, warehouse conditions and project quantity. The export packaging, condensation-control and loading plan can then be reviewed before shipment.
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