How Can You Judge Window Installation Before Stucco Goes On

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The flashing is supposed to be visible. Often it gets buried under stucco. the breakdown sitting on new construction windows carlsbad gagewood photo lists them in order and the window schedule shows the san diego county climate impact on each unit. The sheathing stays open until the flashing is verified. The crew checks each corner for proper lap direction. The schedule notes the san diego county climate zone and the expected marine layer exposure.

Flashing inspection before cladding

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Check the flashing while the sheathing is still exposed and the stucco has not been applied. The marine layer can hide moisture trails that appear later, so run a hand along each joint to feel for gaps. Verify each lap sheds water downward and that no upper layer tucks behind a lower one. Confirm the head flashing laps over the top flange and that the barrier flap covers the head tape. Document the lap sequence with photos before the first coat of plaster goes on.

Head flashing and barrier integration

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The head flashing must lap over the top flange and the barrier flap must cover the head tape. When a vinyl window is set in a stucco wall both water resistive barrier layers need to tie into the same flashing plane. Align the first barrier sheet so its upper edge overlaps the head flashing by at least two inches. Lay the second barrier sheet over the first, maintaining the same lap direction. Tape all seams with the manufacturer approved flashing tape before the scratch coat is applied.

Water test on the installed unit

Run a garden hose over the installed unit before the wall closes and the interior finish is installed. A double pane assembly that leaks at the sill will show water on the interior track within minutes. Spray the perimeter at a rate of about two gallons per minute for five minutes. Watch the head, sill, and jamb lines for any sign of penetration. Record the result and repair any breach before the scratch coat is floated.

Reading the NFRC label

The NFRC label lists U factor, solar heat gain coefficient and visible transmittance for the insulated glass package. A lower solar heat gain coefficient admits less solar heat on west facing walls with strong sun. Compare the U factor to the climate zone requirement for the project. Verify the visible transmittance meets the daylighting goal for the room. Keep the label on the unit until the final inspection is signed off.

Confirming the installer method

Ask the installer to show the manufacturer instructions for the flashing sequence before the first coat of plaster is mixed. The printed steps confirm the lap order and the tape placement used on site. Cross reference the instructions with the actual lap orientation on the wall. Note any deviation and require a correction before the scratch coat is applied. This verification prevents callbacks after the stucco cures. The crew works near carlsbad state beach on some projects.