Specify spill berm fabric around the liquid it may contact and the basin it must become. DERFLEX supplies PVC coated polyester roll material for manufacturers developing portable berm floors, raised walls and maintenance liners. Containment berm material selection starts with liquid compatibility, welded joints, ground contact and repeated folding. Discuss coating construction, fabric weight, width, color and roll packing, then request samples for your liquid-exposure and fabrication trials.
PVC coated polyesterWelded basin developmentCustom roll supply
For containment fabricators, industrial safety distributors and OEM product teams. Final suitability is specific to the approved material and finished berm.
Start with the coated textile.Actual DERFLEX PVC material samples. Color and appearance illustrate material options; they do not establish fuel or chemical compatibility.
What is spill berm fabric?
A reinforced textile that becomes a liquid-containment basin.
PVC spill berm fabric is polyester reinforcement coated with polyvinyl chloride, then cut and welded into a floor, sidewalls and corners. The textile carries mechanical loads; the coating provides the barrier surface. The finished berm is secondary containment around a primary container or piece of equipment.
A useful specification treats the liquid-contact face, backing, reinforcing textile and welded assembly as separate requirements. A waterproof surface is a starting point. It does not establish resistance to a particular fuel, solvent or cleaning mixture.
Identify the wetted side. Specify the formulation, surface finish and evidence needed for the intended liquid, temperature and duration.
Polyester reinforcement
Define tensile and tear requirements in both fabric directions. Do not use yarn denier or total weight as a substitute for measured performance.
Ground-contact face
Review abrasion, coating adhesion and puncture hazards. Where both faces need protection, discuss a two-side coated construction and a separate underlay.
Purchase specification
Specify the construction, then agree the acceptance criteria.
There is no single GSM or thickness that makes every PVC containment berm suitable. The following is a buyer’s specification framework, not a stock-grade datasheet. DERFLEX should confirm available construction and sample results before you approve an order.
PVC coated spill containment fabric: items to confirm at quotation
Item
Material / supply direction
What the buyer should specify
Material system
PVC coated polyester fabric; coating on each face to be agreed.
Wetted side, backing protection, base textile and exact grade reference.
Weight & thickness
Project-specific GSM and thickness, subject to construction review.
Nominal values, tolerances and measurement method. Compare flexibility and strength alongside mass.
Barrier & compatibility
Formulation selected for the proposed exposure.
Liquid name, concentration, additives, temperature, contact duration and approval evidence.
Mechanical performance
Reinforced textile with agreed tensile, tear, adhesion and contact-damage requirements.
Test method, specimen direction, conditioning and acceptance limits.
Weldability
Hot-air or HF/RF fabrication to be evaluated on the selected grade.
Your equipment, finish on the weld faces, overlap geometry and production trial.
Width & roll length
Custom discussion according to construction and production feasibility.
Usable width, seam allowance, cut plan, roll length, core and handling limits.
Finish & color
Color matching and smooth, matte or other finishes by technical review.
Cleaning method, weld-zone finish, visual inspection needs and approved color sample.
Exposure & reuse
Outdoor and cold-flexibility directions to be confirmed for the grade.
UV exposure, minimum folding temperature, storage cycle and cleaning conditions.
OEM roll supply
Roll goods with agreed packing, identification and order documentation.
Quantity, batch reference, labels, packing, destination and required reports.
No fuel-compatibility rating, vehicle load rating, minimum order quantity or delivery time is implied by this table. Confirm these separately for the chosen material and order.
The general PVC tarpaulin roll supply overview provides background on custom material formats; a containment specification needs its own liquid-contact and seam approval.
Selection starts with exposure
Which containment berm material fits your working conditions?
Choose a candidate construction only after describing the liquid and operating cycle. The matrix below identifies what needs qualification; it does not declare a generic PVC grade compatible with the listed liquids.
Evaluate the liquid-contact face and welded sample; define loading and inspection procedures.
Generator / machinery service
Separate review of lubricants, hydraulic fluid, fuel and coolant; local wear protection.
List every credible spill medium. One oil test does not cover all fluids used by the equipment.
Vehicle-access berm
Puncture and abrasion performance, protected wheel paths, wall mechanism and ground pad.
Validate the assembled entrance and floor under the intended vehicle operation. Fabric alone has no drive-over rating.
Washdown collection
Detergent composition, recovered-water temperature, seams and drainage detail.
Evaluate the cleaning mixture and repeated wash / dry cycle, including fittings and corner welds.
Portable response kit
Low-temperature folding, packing bulk and reuse after exposure and cleaning.
Repeat deployment and folding trials at the intended minimum temperature; inspect coating and seams.
Outdoor tank support area
Weathering, site drainage, underlay, supported wall geometry and accessible inspection.
Confirm working capacity, weather allowance and exposure duration with the finished-system designer.
Send these five exposure details.
Liquid identity
Give the exact product or chemical name and safety data sheet, including concentration and relevant additives.
Contact duration
Distinguish occasional drips, a temporary spill and prolonged contact before recovery.
Temperature
Specify liquid temperature separately from ambient temperature and the coldest folding condition.
Cleaning and reuse
Include the cleaner, dilution, washing temperature, drying and deployment frequency.
Failure criteria
Agree what constitutes unacceptable swelling, stiffening, coating separation, strength loss or leakage.
When to evaluate PVC
Begin with PVC coated polyester when your conversion line, roll supply program and target cost favor this material family. Approve the actual formulation, folding behavior and welded assembly for the duty.
When to evaluate an alternative
Compare a different grade or polymer when exposure, cleaning, low-temperature deployment or mechanical testing excludes the PVC candidate. See the dedicated TPU containment berm fabric guide. A polymer name is not a compatibility approval.
Fabrication details
The critical details are where the floor meets the wall.
A containment liner needs a continuous barrier through floor seams, wall transitions, corners and drain connections. Prepare these details before ordering rolls: they determine which surfaces must weld and where the coating is most stressed.
Keep holes outside the liquid-holding zone. Handles, anchors and support attachments need a detail that preserves the wetted envelope. Do not introduce unsealed stitching or hardware penetrations below the intended liquid level.
Conceptual cross-section, not to scale. The diagram explains assembly responsibilities; it is not a tested product design or a photograph of a supplied berm.
Choose roll width with the floor cut plan.
Count the usable width after edge allowance. A nominally wider roll may still require a floor joint when the cut pattern, wall allowances and machine working width are considered. Plan joint positions around wear zones and inspection access.
Qualify the actual weld faces.
Use the intended coating faces, surface finish, overlap and machine. A recipe developed on a different thickness or finish is not automatically transferable.
Before approving the weld recipe
Record machine settings, speed or dwell, pressure and tooling as applicable. Check seal continuity and mechanical performance, then repeat after the agreed liquid and folding conditioning.
Design out hidden channels at corners.
Stacked layers and changes in thickness can interrupt pressure or create a path for liquid. Check corner coupons and an assembled basin, not only a straight lap weld. Keep the construction accessible for inspection.
Protect the floor where contact is concentrated.
Drum rims, equipment feet and wheel paths create different wear patterns. Specify local protection and an underlay where needed. Higher fabric mass does not remove the need to evaluate the entrance, sidewall mechanism and ground.
Real material references
Inspect both surfaces before choosing the sample.
These existing DERFLEX product photos show coated textile appearance. Ask for the specific proposed berm grade so you can evaluate its wetted surface, backing, fold feel and welded sample.
Coating and fold appearanceA material photograph helps describe finish and handling. Confirm which side will face the liquid and how that surface behaves during your weld trial.Separate front and back requirementsDefine the liquid barrier and ground-contact duties individually. This image is a general coated-fabric reference, not a chemical-resistance test result.
Sample-to-production approval
Approve three things: the roll, the joint and the finished basin.
Use a written acceptance plan before bulk purchase. The checks below are proposed qualification requirements to agree with DERFLEX and your fabricator; they are not claims that a specific grade has already passed them.
01 / MATERIAL
The supplied roll
Verify mass, thickness, usable width and agreed tolerances.
Identify both faces and record the approved color / finish sample.
Evaluate tensile, tear, coating adhesion, flexing and contact damage using agreed methods.
Assess liquid exposure under the actual temperature and duration.
02 / CONVERSION
The production joint
Make straight seams and corner details with the intended machine.
Assess mechanical strength and continuity of the seal separately.
Repeat relevant checks after exposure, cleaning and folding.
Retain the sample identification and production weld settings.
03 / ASSEMBLY
The finished berm
Validate the floor, walls, corners and fittings as one assembly.
Confirm working capacity and support / entrance behavior.
Evaluate intended equipment contact and protection layers.
Define inspection, cleaning, repair and retirement criteria.
Avoid these procurement shortcuts: choosing only by GSM; transferring a general tarpaulin temperature range to the berm; treating a competitor’s compatibility chart as DERFLEX evidence; and approving a straight weld while leaving the corners untested.
DERFLEX material supply
A roll program built around your conversion process.
What to discuss with DERFLEX
DERFLEX offers PVC coated textile manufacturing and custom roll supply. Use the inquiry to define the berm-specific construction rather than ordering a general waterproof cover material by appearance.
Construction
Base textile, coating on each face, target mass / thickness, width and finish.
Repeat-order reference
Approved sample identification, written tolerances, color reference and grade-specific documentation.
Roll handling
Roll length, core, winding, maximum handling weight, labels and protective packing.
What determines the quotation?
Compare the cost per usable finished floor, including cut waste, seam labor, reinforcement and qualification. A lower price per square meter may not produce the lower converted-product cost.
Material and processing
Textile structure, coating formulation, coating quantity, finishing and feasible production width.
Sampling and documentation
Sample format, liquid / weld trials and the agreed report or inspection scope.
Commercial scope
Order quantity, recurring demand, packing and destination. MOQ, sample availability and lead time require confirmation for the chosen program.
Buyer questions
PVC spill berm fabric FAQ
Direct answers for containment manufacturers, converters and purchasing teams.
What material is used for spill containment berms?
PVC coated polyester is used in many portable containment berms. Its reinforcement supports the basin, while the coating provides the barrier surface. TPU and other coated membrane grades are alternatives for specific duties. Select the actual grade by liquid exposure, mechanical requirements and fabrication trials.
Is PVC containment berm material suitable for diesel, oil and chemicals?
Suitability depends on the selected formulation and the exact liquid, including concentration, additives, temperature and contact time. A waterproof PVC fabric is not automatically approved for fuel or chemical exposure. Request grade-specific evidence and evaluate material and welded samples under representative conditions.
What GSM or thickness should spill berm fabric have?
There is no universal GSM or thickness for every berm. Choose these together with base textile strength, coating adhesion, liquid compatibility, foldability and seam performance. Tell DERFLEX the berm geometry, ground conditions, equipment contact and deployment cycle before confirming the construction.
Can ordinary waterproof tarpaulin be used as a containment liner?
Use it only if the specific grade and finished assembly meet the intended containment requirements. Rain protection does not prove suitability for liquid contact, cleaning chemicals or welded corner details. Qualify the coating, seams and assembled liner for the proposed service.
Can vehicles drive over PVC spill berm fabric?
Vehicle access must be evaluated on the complete, berm, including the wall mechanism, entrance, floor protection, ground surface and operating procedure. PVC fabric alone has no vehicle load rating. Specify vehicle type, wheel contact, traffic frequency and intended entry method during development.
Should I choose PVC or TPU for a portable containment berm?
Compare the specific PVC and TPU grades rather than assuming one polymer always performs better. Liquid compatibility, cold folding, abrasion, cleaning, weldability and converted-product cost should guide the choice. Approve the selected material and finished basin through the same application-specific trial plan.
Make the next sample useful
Send the liquid, the basin and the fabrication plan.
Start your PVC coated fabric inquiry with the exposure and conversion details. DERFLEX can discuss the available material direction, sample format and roll supply scope for your spill containment program.
Exact liquid and intended maximum contact time.
Internal floor dimensions, wall detail and equipment contact.
Target construction, welding equipment and sample needs.
Order quantity, packing, destination and required documents.
