Scope of this guide
Document preparation for one specified liquid-applied exposed-roof waterproofing system. Balconies under tiles, sheet membranes, pools, tanks and below-ground work need their own system sources. This guide supplies a sequence and blank record structure; it does not select products, design falls/drainage, prescribe test values or certify waterproofing.
Resolve the system before drafting application rows
Identify the roof zone, existing or new substrate, exposure and permitted use/traffic, approved detail and specified membrane system. Collect current project-approved technical data for the actual primer, membrane, detailing components and finish.
The supplier-hosted MAPEI B07 work method statement distinguishes substrate conditions and alternative water-based and solvent-based systems. Its 2021 revision illustrates why products and application rules must be selected together; it expressly requires the relevant technical data and project-specific advice. Do not combine compatible-sounding options into a new system.
| Input | Record the actual source |
|---|---|
| Roof zone and substrate | Location/area; substrate or existing coating; approved falls/drainage and detail references; preceding-work handover. |
| Selected complete system | System ID; primer; membrane; joint/detail treatment; reinforcement where specified; finish/topcoat; current approved product documents. |
| Application and readiness requirements | Applicable surface/environment conditions, preparation, layer measurements, recoat/curing and permitted exposure/use from the selected system. |
| Inspection and completion requirements | Project notice/release route, any specified test procedure, protection responsibility and roof-zone handover evidence. |
Sequence the work without mixing product alternatives
| Stage | Check and evidence structure |
|---|---|
| Substrate handover | Identify the actual substrate/old coating, approved preparation and falls/drainage references; record defects and dependencies. |
| Preparation and local repairs | Link authorised preparation/repair to the zone; retain condition and readiness evidence before primer. |
| Junctions, movement details and outlets | Identify each approved detail and selected compatible treatment; record completion before membrane obscures it. |
| Primer | Record the product/batch, substrate condition, location and application/readiness evidence required by its current instructions. |
| Membrane layers | Record zone, product/batch, layer identity and actual required measurements; link recoat/readiness evidence to the selected system. |
| Specified finish and protection | Include the selected topcoat/finish where required and retain readiness, damage and repair evidence before permitted traffic or handover. |
Copy a roof-zone and layer record into the project form
The table below is a blank record specification, not evidence of work performed. Repeat the layer group for each actual layer required by the selected system. Do not prefill observations, dates, measurements or approval.
| Record group | Fields to provide |
|---|---|
| Zone and basis | Project/package; roof/zone ID; substrate; selected system; ITP item/revision; approved drawing/detail and product document locators. |
| Substrate and detail readiness | Actual observed condition; preparation/repair evidence; junction/outlet detail IDs; open issue and responsible response. |
| Each primer/membrane/finish event | Actual product/batch; zone/layer; application date; required environmental/readiness evidence; specified measurement method/units; actual reading and evidence reference. |
| Next-operation readiness | Selected system recoat/curing/use requirement reference; actual evidence; permitted next operation; project review/release reference where required. |
| Damage and closeout | Defect location; authorised repair instruction; actual repair/recheck evidence; protection owner; final zone handover record. |
Do not copy wet-area test or cure assumptions
An internal wet-area flood-test record does not establish whether a roof test is required, how it should be performed or when this system is ready for it. Where the project specifies testing, cite its procedure, coverage, acceptance basis and responsible party before adding the test row.
Keep unknown values as precise queries: identify the selected product/document, the missing readiness or measurement rule, the affected zone/layer and the decision owner. Do not replace the missing rule with a typical coat thickness or bathroom flood duration.
Complete the plan with the governing product and project requirement Source each actual acceptance condition.
Keep repairs and protection within the same roof-zone trail
Retain the original observed damage or failed inspection, identify its exact zone/detail, and record the authorised treatment separately from its actual repair and recheck. Product changes need a controlled system decision, not a field substitution of one component.
Record who protects the completed zone, any permitted access/use condition and the later inspection or handover reference required by the project. Completing a layer record does not itself authorise traffic or release a contractual hold.
Use the project NCR route when a departure requires it Trace defects, action and reinspection.
Assess affected ITP rows and records when an approved source changes Control a changed system or detail.
Have the selected roof system documented
Send the roof-zone drawings/details, selected complete system and current product documents, substrate/repair information, inspection/test requirements and mandatory contractor form. We map the defined package into the ITP and matching blank records.
USD 99 per defined work package; Excel, Word and PDF; within 24 hours after payment and complete usable required files. The service prepares documents, while design, application, actual testing/inspection and certification stay with the assigned project parties.
State that this order is an exposed-roof system rather than the internal wet-area baseline Review waterproofing drafting scope.
Fictional example: the membrane is named but the primer basis is missing
A fictional source-gap workflow only; no product selection, technical value, installed layer or test result is supplied.
- Identify fictional Roof Zone EX-R and the submitted membrane document.
- The substrate is an existing coating, but the approved compatible primer/preparation instruction is absent.
- Record the missing system decision and affected primer/membrane rows; keep the unresolved instruction visible.
- After the project supplies the approved instruction, update its locator and blank layer fields, then follow the actual event/inspection and separate release process.
Before issuing the plan
- Limit the package to its selected exposed-roof liquid system and roof zones.
- Keep substrate, primer, membrane, detail treatment and finish sources compatible and identifiable.
- Use actual current project-approved product instructions for measurements and readiness.
- Repeat layer records without filling actual results in advance.
- Do not import wet-area flood-test or traffic-release assumptions.
Sources and their limits
Public sources explain the planning topics below. Confirm their jurisdiction, contract context and applicable edition; use controlled project documents for the actual requirements.
- MAPEI B07 — Liquid Applied Waterproofing System for Exposed Roofs (supplier-hosted copy)
B07, revision 2, 19 March 2021: 1.3 substrate preparation; 1.4 levelling; 1.5 waterproof detailing; Parts 2 and 3 system alternatives; closing project-specific/TDS note.
Inspected full extracted statement supports the distinction between substrate, detail, primer, membrane and finish stages. Historical product choices and application values are not reproduced as current or universal rules. Obtain the selected current approved system documents.
Source reviewed: 2026-10-10