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Secuencia de obra

Roof work sequence

Roof work is a water-control system, not only a finish. The correct sequence protects slope, membrane continuity, flashings, drains and overflow before leaks become interior damage.

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P谩ginas conectadas

Esta secuencia conecta calculadora, checklist y coste de errores para mantener planificaci贸n y riesgo en un sistema.

Abrir etapa Abrir checklist Ver coste de errores Abrir calculadora

Secuencia recomendada de trabajo

01

Prepare roof base and falls

Give water a reliable path before waterproofing starts.

  • Clean the roof base and remove laitance, dust and loose material.
  • Set out falls to primary drains, scuppers and overflow points.
  • Confirm upstands, parapet heights and equipment plinths.

Punto de control: Waterproofing should not begin until falls, low points and drain locations are visible and checked.

Herramientas, equipos y acceso: Laser level, Straightedge, Screed tools, Drain templates

02

Install membrane, flashings and terminations

Create continuous waterproofing around edges, penetrations and vertical faces.

  • Prime the base and install membrane or liquid system to supplier requirements.
  • Reinforce corners, outlets, penetrations, parapets and movement joints.
  • Protect membrane before other trades return to the roof.

Punto de control: No covering layer or equipment installation should proceed until membrane continuity and flashings are inspected.

Herramientas, equipos y acceso: Primer roller, Membrane tools, Detail brushes, Heat gun or torch

03

Test drainage, overflow and protection

Prove the roof can remove water before interior finishes are exposed.

  • Check drain strainers, overflow routes and downpipe continuity.
  • Run ponding or controlled water test where appropriate.
  • Install protection layer and record hidden details.

Punto de control: Interior ceiling closure should wait until roof drainage and waterproofing evidence are complete.

Herramientas, equipos y acceso: Water hose, Drain camera if needed, Moisture meter, Photo log

Herramientas, equipos y acceso

Level and slope control

  • Laser level
  • Straightedge
  • Drain templates
  • Screed tools

Waterproofing

  • Primer rollers
  • Detail brushes
  • Membrane tools
  • Protection board knife

Testing

  • Water hose
  • Stopper
  • Moisture meter
  • Inspection camera

Consumos de material para planificaci贸n

Los consumos son referencias de planificaci贸n. Las cantidades finales deben comprobarse con planos, especificaciones, normativa local y fichas de proveedor.

Material o recurso Base Rango de planificaci贸n Unidad Nota
Falls buildup Roof area 0.03-0.08 m3/m2 Planning range before detailed slope drawing.
Roof membrane waste and laps Waterproofed area 10-20 % Higher for corners and penetrations.
Primer Roof substrate 0.15-0.30 kg/m2 Supplier data sheet governs final quantity.
Protection layer Roof membrane area 1.05-1.15 m2/m2 Allows cuts and edge detailing.

Controles de calidad antes de avanzar

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