Membrane seams and details.
Measure seam runs and detail bands independently from the field area. Count junction patches and penetration blanks once.
Gather the selected product data
Record the selected tape length, sheet dimensions, permitted splice overlap and liquid product coverage. Obtain all details from your supplied specification.
Choose the matching calculation
Membrane Seam and Junction Tape Order Calculator
Order rolls from measured seam runs, specified end allowances and separate junction patches, with explicit joining rules.
Waterstop Stock and Splice Quantity Calculator
Count stock lengths and overlapped splices independently for each run in your existing waterstop plan.
Membrane Penetration Patch Blank Calculator
Count square patch blanks that fit a sheet around identical measured penetrations, without reusing cut-out centres.
Liquid Membrane Detail Band Coverage Calculator
Separate measured detail bands from broad surface coverage and remove explicitly measured shared areas once.
Measure and check your assumptions
How to measure and order: membrane seams and details
Which measurements and product data prevent quantity mistakes for this job?
Continuous seam cuts versus permitted tape pooling: quantity checks
Total metres alone can undercount rolls when individual continuous pieces cannot share the remaining length.
Compare purchase scenarios
Keep the estimate within scope
Seam tape and flashing tape are not automatically interchangeable. The calculator does not approve waterproofing or flashing details.
Collect chosen results in a free browser material project. Alternative scenarios remain separate orders.