You are ready to hang siding, but window flashing, roof intersections, and service penetrations still need checking. Check them before the siding hides them. A water-resistive barrier (WRB) provides a rain-control layer behind the exterior finish. PNNL’s drainage-plane guide explains how it directs water that passes the cladding down and out.
Have the crew trace a continuous drainage route around the wall’s openings and transitions. “Housewrap complete” is too broad for a handoff record.
Start with the selected wall system
Identify the WRB before discussing repairs or tape. Write down its manufacturer, product, substrate, and installation document. Include the cladding and any exterior insulation or drainage layer in that description.
WRBs come in different systems. For example, Huber’s ZIP System manual describes sheathing with a water-resistive overlay and specified seam treatments. Do not transfer a loose housewrap detail to an integrated sheathing system without checking its instructions.
Rain control and air control are different functions. PNNL explains that a drainage layer can also serve as an air barrier when its joints and transitions are properly sealed. That does not make every installed WRB a completed air barrier. Drainage and air-control functions.
Ask the builder which layer performs each function on this project. If you are the siding sub, put that answer in the incoming-work checklist. Do not infer it from the color of the exposed wall.
Check how flashing connects to the WRB
Flashing connects the WRB to openings and other breaks in the wall. Review windows, doors, roof abutments, wall bases, and service penetrations with the responsible installers.
DuPont’s installation library separates window procedures for installations before and after its WRB. Choose the sequence for the wall assembly and access you have. Ask which procedure applies before cutting the opening wrap.
At a roof abutment, include the kick-out flashing detail in the wall review. PNNL’s roof-wall guidance emphasizes integration of the roof flashing with the wall drainage layers. Agree who connects the roof flashing to the WRB before the roofer arrives.
For each opening or transition, request a detail showing how water enters and leaves it. A close photograph of tape around a pipe does not show how the wall drains below it. Pair the close view with a wider elevation photograph.
Give the pre-siding check an owner
Name one site lead to release the wall for siding. Have the WRB installer attend and the siding foreman acknowledge the wall’s condition. Bring the window or roofing installer to any unresolved connections.
Use this proposed division of work when writing the scopes:
Scroll to read all columns.
| Interface | Question to resolve before siding |
|---|---|
| WRB field and seams | Who checks installation and repairs damage? |
| Windows and doors | Who completes and accepts flashing integration? |
| Roof intersections | Who connects roof flashing to the wall layer? |
| Service penetrations | Who seals each opening and who repairs later changes? |
| Cladding attachment | Who checks the siding system’s requirements? |
| Final release | Who records corrections and authorizes covering? |
Agree each assignment and replace every “who” with a person or company in the project record.
If your scope begins after another crew installs the WRB, say how you will report an unacceptable condition. Agree who checks repairs and whether they change your start date. Use the trade-handoff guide to document the transfer.
Walk the wall in a repeatable order
Start with one elevation and finish it before moving on. Check the work against the current instructions. Use this walk sequence alongside the installation requirements.
- Identify the selected products and applicable wall detail.
- Review the wall base and its intended discharge.
- Follow seams upward and record questionable transitions.
- Check every window and door against its detail.
- Review roof intersections and projecting elements.
- Locate all service penetrations, including unfinished ones.
- Mark damaged areas and missing work for correction.
- Photograph the completed corrections before covering.
Give each issue a location and one assigned action. “Repair wrap on rear wall” invites different interpretations. “Rear elevation, kitchen exhaust opening: installer to provide selected penetration detail and complete repair before siding” tells the next crew what needs to happen.
Keep the release conditional if a service penetration remains unfinished. Put the return check on the schedule. If a later crew changes the opening, reopen that location’s acceptance record.
Check laps, penetrations, and flashing connections
Check for laps that send water behind the layer below, unsealed penetrations, and incomplete flashing connections. PNNL identifies those concerns in its wall drainage guidance.
For Huber assemblies, the manufacturer’s manual includes rolling tape, surface conditions, exposure limits, and repair details. Check those requirements for the selected product. Do not use one tape or weather rule for every siding scope.
Cladding introduces another set of instructions. James Hardie’s technical resources provide its product guidance and clearance documentation. Ask the siding lead to bring the selected cladding’s documents to the walk, even when another company supplied the WRB.
Do not accept “we always use this tape” as the compatibility answer. Request the named system’s approved approach for the substrate and transition in question. Refer an unresolved combination to the relevant manufacturer or designer.
Record permit inspections and crew checks separately
For North Carolina work, consult OSFM’s code and amendment directory and confirm the permit requirements locally. The contractor’s pre-siding walk should complement the required inspection process.
Raleigh requires wall-opening and roof flashings to be visible at framing inspection. City inspection guidance. Schedule that inspection before allowing crews to cover the flashing.
Keep the inspection result beside the crew’s correction record. Record which locations were checked, which remained open, and who accepted them. Avoid a single “passed” label that does not explain its scope.
For a window-specific review, use window sill pans and flashing order. For the wider installation package, the siding trade page helps frame the incoming and outgoing handoffs.
Plan for the last service penetration
Ask which crew still needs to cut this wall. Ask the builder to check the service and fixture schedule before releasing the elevation. Mark future penetrations separately from finished ones. Name who returns to flash and seal them.
For example, if an exterior fixture is still undecided, record the affected location as held. Ask the responsible installer what can be completed now and what must wait. Get approval before installing any temporary detail.
Give the siding lead that exception before mobilization. Arrange the return check when the final component is known. Keep the new photographs with the earlier release so the record shows both stages.
Where Cercha fits
Cercha’s portfolios and Gallery let you review the work a siding or window contractor chooses to show. Use Messages to ask about experience with your wall system and the pre-siding handoff. Search by trade, ZIP, and radius to begin those conversations in the Triangle launch market.