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Work sequence

Building envelope work sequence

Envelope work closes the building against rain, wind and heat. The high-risk points are openings, flashings, sealant joints and moisture bridges where several trades meet.

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Connected product pages

This sequence is connected to the stage calculator, checklist and mistake-cost pages so planning, execution and cost risk stay in one system.

Open stage page Open checklist See mistake costs Cost Guides Open calculator

Recommended sequence of work

01

Prepare openings and support conditions

Make the opening fit the product before the product arrives.

  • Check opening size, squareness, level, support and fixing zones.
  • Repair weak edges and confirm sill slope or water path.
  • Verify that waterproofing, facade and interior finish thicknesses align.

Hold point: Window and door installation should not start until openings are measured and corrected.

Tools, equipment and access: Laser measure, Level, Masonry repair tools, Opening checklist

02

Install frames, flashings and weather seals

Close the water path at each opening and edge.

  • Fix frames with correct packers, anchors and movement allowance.
  • Install sill flashings, drip edges, tapes and perimeter sealant.
  • Protect exposed joints until facade and interior returns are complete.

Hold point: Do not cover perimeter joints until fixings, packers, flashing and sealant backing are inspected.

Tools, equipment and access: Frame setting tools, Sealant gun, Flashing snips, Foam gun, Torque driver

03

Test water path and close interfaces

Confirm the envelope works as a system before finishing returns.

  • Check drainage path at sills, thresholds and facade interfaces.
  • Inspect moisture bridge risks around plinths and exposed edges.
  • Record completed details before interior and exterior finishes hide them.

Hold point: Interior finishing should wait until envelope interfaces are weather-tight and recorded.

Tools, equipment and access: Water spray kit, Moisture meter, Inspection mirror, Photo log

Tools, equipment and access

Measurement and setting

  • Laser measure
  • Level
  • Packers
  • Frame clamps

Weather sealing

  • Sealant gun
  • Flashing snips
  • Foam gun
  • Tape roller

Inspection

  • Water spray kit
  • Moisture meter
  • Inspection mirror
  • Photo log

Planning material consumption norms

Consumption ranges are planning benchmarks. Final quantities must be checked against drawings, specifications, local codes and supplier data sheets.

Material or resource Basis Planning range Unit Planning note
Perimeter sealant Joint length 6-12 lm/cartridge Joint geometry controls final rate.
Flashing tape Opening perimeter 1.05-1.20 lm/lm Allows laps, corners and waste.
Frame packers and fixings Opening unit 6-14 pcs/unit Adjust to size and wind load.
Opening repair mortar Opening perimeter 0.05-0.15 m2/lm Planning allowance for edge correction.

Quality gates before moving forward

Related glossary terms

Opening flashing

Water-shedding detail around windows and exterior doors that keeps rain out of the wall assembly.

Sealant joint

Flexible sealed joint used to close and protect movement-sensitive interfaces.

Moisture bridge

Unwanted path that lets moisture bypass a protection layer and move into the building fabric.