PVC Roofing System – Work Procedure and Labour Resources Requirement

PCV membrane welding

PVC membrane manual welding for details

 Basic Work Schedule 

  • 1 Week preparation of detail drawings, finalizing of quantities and ordering of materials.
  • 1 – 2 Weeks preparation on and off site.
  • 3 – 4 Weeks to glue EPS bars 25kg/m3, 40mm thk, width : 100mm on the between  of the profiles of the existing steel deck to full filled the valley, then apply the galvanize steel plate 0,70mm thk on top to make a new surface for application Sarnafil membrane.

–         Site access set up

–         Site logistics set up

–         Site store set up

–         Preparation of roof surfaces, cleaning

–         Preparation of penetration areas, cleaning

  • 6 – 8 Weeks installation of PVC roofing membrane based on the pre – planed sequence of work starting from “ridge down” to avoid water ingress from fastener punctured existing roofing membrane. The average speed of installation for the roofing system is approx. 500m2 per day.
  • Concurrent 8 Weeks installation of PVC membrane detailing works to penetrations, outlets and up stands.
  • 1 Week site clearing and demobilization.

Basic Material Schedule

 4 – 6 Weeks delivery time for PVC Roofing Membrane, Felt and Fastening accessories

  • 8 Weeks delivery time for adhesive for up stand detailing

Manpower Requirements

Scope of Work Team

 

TASK

GANGS

Certified Installer

 

Normal Installer

TOTAL

 

 

Surface preparation Cleaning, preparing of existing surface

2

0

3

6

EPS – Stell plate Glue EPS to full fill the existing valley of the steel deck.

2

4

2

12

Sarna – Felt Laying of separation felt

2

1

4

10

Sarnafil Membrane Installation of Sarnafil Membrane

2

1

9

20

Welding of Membrane Welding of Sarnafil membrane with automatic welding machine

2

1

2

6

Detailing works Detailing works for up stand, penetrations and outlets

4

2

2

16

Site Personnel shall consist of:

–         1 full time Roof Specialist / Project Manager

–         3 full time Supervisor/ Foreman.

–         8 full time Specialist Installer.

–         15 – 20 full time Installer / Worker

–         1 – 2 Technicians will be present during initial, middle stage of installation to guide certified contractor on the execution of the project, in conclusion for quality checking.

–         1 Product Specialist / Supervisor.

Machineries and Equipment

auto welding machine

PVC welding machine

–         Mobile crane for material hoisting.

–         Container for storage.

–         Container for site office.

–         Auto voltage equipment.

          Special Equipment:

–         Leister Varimat Automatic hot air welding machine

–         Leister hand held manual hot air welding gun for detailing

–         General power tools

–         General hand tools