RFQ checklist / unresolved fields
PVC waterproofing membrane specifications
A comparable PVC membrane request identifies construction, thickness, reinforcement and intended use before price. Use the checklist to distinguish mandatory project requirements from options a supplier may propose. This independent sourcing desk can organize proposals; it does not approve a membrane for your project.
Open each specification field
Construction and intended application
Identify reinforced or unreinforced construction, backing if required, surface finish and where the membrane will be used. State whether it will be exposed or covered. Request a supplier statement on compatibility with the proposed substrate, insulation and contacting materials rather than inferring it from polymer family.
Thickness, dimensions and quantity
Record nominal thickness in mm or mil with tolerance and test basis; list roll width and length separately. One mil equals 0.001 inch, not one millimeter. Quote roll count, gross area and any allowed lap or waste assumptions as separate quantities so the supplier does not silently change the purchasing unit.
Seams, accessories and verification
Ask the offered supplier for seam method, field detail guidance, accessory list and current technical sheet. Request relevant test records for the exact construction and note the issuing organization and report scope. Compare the proposed membrane and accessories together; neither a brochure image nor a generic certificate confirms project acceptance.
Decisions that stay with the buyer
Material alternatives
Should a thicker alternative be accepted?
Not on thickness alone. Compare reinforcement, dimensional tolerance, intended exposure, seam process and relevant test evidence. A thicker incompatible material can still leave the detail unresolved. Keep proposed changes on a deviation list for review.
Budget and service
How can price preferences help?
State a budget range with currency and per-unit or total-order basis. A high-end preference may prioritize supporting documents and sample coordination; a budget preference may favor fewer optional services. Both remain subject to the same mandatory specification, freight and accessory comparison. These labels are buyer preferences, not supplier ratings.
Evidence
What can be checked before commitment?
Request a dated technical sheet, proposed sample identifier and written responses to open fields. Match the delivered sample label to the offered material, review dimensions and ask a qualified reviewer to assess assembly compatibility. No sample check on this page represents a laboratory test or warranty.
Send a short, comparable RFQ
Mark required and optional fields, identify the decision maker for alternatives, and include the US destination. Read the procurement brief or review the inquiry catalog before submitting.