Vertical walls
State wall substrate, tie-hole and penetration conditions, anticipated exposure and backfill sequence. Separate membrane area from protection board and drainage components in the request.
Project application / below grade
Foundation waterproofing membrane procurement
Translate foundation conditions into questions the proposed supplier can answer. Describe the wall or slab, access, drainage and protection arrangements, then separate material selection from installation responsibility. Our independent sourcing support helps structure the purchase comparison; project suitability needs review by the responsible designer.
- Read the substrate and water-exposure brief.
- Match sheet, liquid and accessory quantities.
- Request documents for the offered system.
Four application briefs
Underslab interfaces
Ask which system is proposed for the construction sequence. Confirm joint and penetration details before comparing a nominal area price across unlike assemblies.
Transitions
Corners, pile heads and wall-to-slab junctions require detail-specific components. Identify who reviews the transition and which accessories are included in the supplier scope.
Staged deliveries
Give receiving access and requested stages. Check storage conditions, packaging and lot traceability; arrival timing is confirmed commercially for the specific shipment.
Selection factors to resolve
Is a liquid system interchangeable with a sheet?
Liquid application can follow irregular details, but the quotation needs coat build, cure and substrate assumptions. Sheet supply states roll geometry and lap requirements, but penetrations still need a compatible detail. Compare the complete proposed assembly rather than ranking materials by format alone.
Does a thickness reference establish performance?
No. The public SikaShield S-60 sheet reference lists a nominal 60 mil (1.5 mm) value and a thickness measurement method. That example is not a universal foundation membrane specification. Ask for the offered construction, reinforcement and test conditions before accepting an alternative.
SikaShield S-60 product referenceWhat belongs outside a membrane-only comparison?
Substrate repair, drainage, primer, reinforcement, protection, labor and testing may be excluded. Ask for a separate line for each applicable item. Water conditions and substrate acceptance cannot be established by a catalog name, and a sample does not validate an entire foundation assembly.
Send the foundation conditions
Include area, dimensions, thickness basis, destination and requested timing. The catalog identifies inquiry options; the supplier must confirm the exact material and documents. Keep optional budget and service preferences separate from mandatory project requirements.