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Home / Canvas Tarpaulin Supplier in Pakistan
PAKISTAN-WIDE TARPAULIN SUPPLY
Technical product guidance, applications, features, quality points and custom manufacturing options for projects across Pakistan.
Canvas tarpaulin is a robust woven fabric cover selected when breathability, abrasion resistance and surface-friendly protection are more important than the completely sealed character of a plastic sheet. Traditionally manufactured from cotton duck, canvas has been used for transport, machinery, military equipment, agriculture, workshops, tents and general cargo for generations. Modern proofing treatments improve resistance to water, mildew and weather while preserving a degree of airflow through the fabric.
Tarpaulin Pakistan supplies canvas covers in standard and custom sizes for industrial, commercial, agricultural and specialist applications. Canvas is normally described by weight in ounces per square yard, such as 12 oz, 16 oz, 18 oz or heavier grades. Finished weight can change after wax, chemical or water-resistant treatment, so the buyer should clarify whether a quoted ounce value refers to untreated base cloth or the completed proofed fabric.
Canvas is produced from tightly woven yarn rather than a plastic woven tape with a continuous laminated film. Cotton fibres create a textured, flexible cloth that handles friction well and allows limited moisture vapour to move through. This breathability can reduce condensation around machinery, metal components, timber or agricultural goods, especially when the cover is arranged with ventilation. The fabric also tends to grip the load and create less slippery surface contact than a smooth plastic cover.
Untreated cotton canvas is not fully waterproof. Proofed canvas is treated with wax, oil or modern chemical formulations to repel water and resist mildew. It can perform very well in rain when properly pitched, overlapped and maintained, but long-standing pooled water or worn treatment may allow dampness through. For applications requiring a continuous waterproof membrane, PVC or laminated PE may be a better choice.
Choose canvas for breathable, heavy woven protection—not because it is identical to a plastic waterproof sheet.
Ounce ratings indicate nominal fabric weight per square yard. As a practical conversion, 18 oz is approximately 610 GSM, although the relationship varies with finishing and the basis used by the manufacturer. A lighter canvas is easier to handle and suitable for indoor covers or moderate work. Heavy proofed grades resist abrasion and repeated use but require more labour and stronger support, especially in large sizes.
| Typical grade | General character | Common applications | Important note |
|---|---|---|---|
| 10–12 oz | Relatively light and flexible | Indoor dust covers and light equipment protection | Not intended for severe outdoor exposure |
| 14–16 oz | Medium woven cover | General cargo, agriculture and workshop use | Confirm whether weight is before or after proofing |
| 18 oz | Heavy commercial canvas | Machinery, transport, industrial and repeated outdoor use | Approximate conversion is about 610 GSM |
| 20–25 oz | Very heavy-duty | Specialist covers, high-abrasion work and long service | Assess handling weight and support carefully |
Fabric strength also depends on yarn quality, weave density and finishing. A higher ounce value does not excuse weak seams or inadequate edge reinforcement. For a fitted cover, how the cloth is cut and where stress falls can be as important as the base weight.
Canvas performs particularly well where a cover touches irregular or painted equipment. The soft woven face is less likely to behave like a hard plastic film, although trapped grit can still scratch a surface. The material is relatively quiet in wind and drapes naturally around complex shapes. It can be repaired with compatible fabric patches and strong stitching, making it practical for users who maintain covers over many seasons.
Because cotton absorbs some moisture, a wet canvas becomes heavier. It must be dried before storage to prevent odour, mildew and deterioration. Proofing reduces water absorption but does not remove the need for proper care.
Canvas covers protect lathes, generators, fabricated steel, pumps, motors, tools and machinery from dust, sunlight and workshop contamination. Breathability is valuable when the covered item may hold residual moisture or experience temperature changes. Fitted designs can include openings, flaps, handles or labels. Equipment should be cool and dry before it is covered, and ventilation should be considered for long-term storage.
Heavy proofed canvas has a long history as a truck and cargo cover. Its weight helps it remain stable, while its textured surface grips cargo better than a lightweight slippery sheet. It is suitable for loads that benefit from ventilation, such as some timber, machinery or agricultural goods. The cover still needs secure tie-downs, reinforced edges and protection over sharp corners. For loads that demand complete waterproofing at road speed, heavy PVC may be preferred.
Canvas can cover farm machinery, sacks, seed, fodder and produce where airflow is important. It is also useful as a working sheet during sorting and handling. Proofed canvas protects against intermittent rain, but organic materials should not be sealed while warm or damp. The cover should be raised or vented so moisture can escape and air can circulate.
Construction teams use canvas for equipment, tools, finished surfaces and reusable drop sheets. The fabric tolerates abrasion and can absorb limited splashes, making it useful for painting and maintenance. Ordinary canvas is combustible and should not be positioned near welding sparks, open flame or high heat. Specialist flame-retardant treated canvas must be ordered when the work requires documented fire performance.
Heavy canvas is valued for traditional tents because it provides shade, durability and a more comfortable internal environment than a fully sealed plastic cover. Tent fabric must be cut and supported to shed water, and poles, ropes, anchors and seams must be sized for the structure. A tarpaulin fabric should not be used as an engineered permanent roof without suitable design.
Canvas is used for boat equipment, vehicle components, field supplies and military-style protective covers because it can be made in muted colours, repaired and handled repeatedly. Marine exposure requires appropriate proofing and corrosion-resistant fittings. Salt, moisture and biological growth must be cleaned away before storage.
These terms should not be treated as identical. Untreated canvas may absorb water and swell. Water-resistant canvas receives a finish that causes light rain to bead and run off. Heavier waxed or proofed canvas provides stronger weather resistance but may still leak under pressure, at worn folds or where water pools. A truly waterproof requirement is often better served by PVC-coated fabric.
Waxed canvas has a characteristic feel and may mark surfaces or clothing. Some chemical proofing treatments are designed to maintain flexibility and reduce mildew. Buyers should state if the cover will contact food, sensitive equipment or painted surfaces, because the treatment must be compatible with the use.
Canvas can be cut into flat sheets or tailored around equipment, vehicle bodies and irregular loads. Finishing may include double-folded stitched hems, rope inside the edge, webbing reinforcement, metal eyelets, D-rings, straps, buckles, zips, flaps and handles. Seams use strong thread and should be positioned away from high-abrasion contact points whenever possible.
For a fitted cover, provide length, width, height and the location of controls, handles, exhausts, lifting eyes or protrusions. Decide whether the cover should reach the ground, stop above it or include an elastic or tied lower edge. Allowance is required for easy installation; an extremely tight cover may be difficult to fit and can overload stitches.
Examine the weave against light. It should be tight and reasonably uniform without open bands, broken yarns or thin areas. Confirm the ounce rating, material composition and proofing type. Rub a small inconspicuous area to check excessive colour or treatment transfer. Seams should be straight with consistent stitch length and no skipped sections. Hems should contain enough layers to resist eyelet pull.
Eyelets should be installed through reinforcement and rolled without sharp edges. Corners require extra layers because they receive diagonal loads. If the fabric is proofed, look for uniform treatment and ask about recommended cleaning or reproofing. For large project orders, approve a sample and written specification before production.
Install canvas with enough slope for rainwater to run off. Distribute tension around the perimeter and avoid placing the cloth over unprotected sharp edges. Do not over-tighten wet canvas; natural fibres can change dimension as they absorb and release moisture. Inspect ties and support after wind or rain.
Brush away dry dirt, then clean with cool water and a mild product recommended for the proofing treatment. Strong detergents, bleach and solvents can strip the finish. Do not machine wash a large proofed cover unless the manufacturer permits it. Air-dry completely on both sides before folding. Store loosely in a clean, dry, ventilated place above the floor.
Proofing may need renewal after extended use or repeated cleaning. Repair small cuts promptly with compatible canvas and heavy thread. Replace damaged eyelets and reinforce the surrounding area rather than simply installing a larger ring through weakened cloth.
Choose canvas when breathability, low condensation, abrasion resistance and natural drape are important. Choose PVC when the job demands strong waterproof welding, easy washing and long-term industrial service. Choose PE when low weight and economy matter most. A fire-retardant product should be selected when a safety standard is specified; ordinary canvas is not automatically flame retardant.
Provide finished dimensions, quantity, preferred ounce weight, proofing requirement, colour, edge finish, eyelet spacing and delivery city. Explain the equipment or material being covered, whether it will be indoors or outdoors, and how often the cover will be handled. For a fitted item, send photographs and a dimensional drawing.
Tarpaulin Pakistan can help convert an ounce requirement to an approximate GSM, compare proofing options and design practical reinforcement. The aim is a cover that protects the item while remaining manageable for the people who will install, remove and store it.
Untreated canvas is not waterproof. Proofed or waxed canvas resists rain, but pooled water and worn treatment may allow moisture through. PVC is better for a continuous waterproof barrier.
It refers to nominal weight per square yard. Eighteen ounces is approximately 610 GSM, although the exact finished weight can differ after proofing.
Canvas is breathable, durable against rubbing and softer in contact than many plastic sheets. It can reduce condensation risk when installed with suitable ventilation.
Specialist treated grades are available, but standard canvas is combustible. Request the required test standard and supporting documentation for safety-sensitive work.
Clean it, allow both sides to dry completely, fold it loosely and store it in a dry ventilated place away from chemicals, pests and direct sunlight.
Send size, quantity, material, colour, application and delivery city. Include a drawing, photo or BOQ when available.