AFIC Warehouse: Warehouse Roof Waterproofing in Dammam

Project photos

Tap any photo to enlarge. All photos were taken on site by the ETCE team.

The challenge

The AFIC warehouse sits in an industrial zone where dust, salt air and summer heat attack the roof from every direction. Water was finding its way in through opened end laps, a gutter line that held standing water, and isolated spots where the sheet coating had broken down. For a storage building the concern was simple: water landing on stored goods.

What ETCE did

ETCE sealed the end laps with EPDM strips, lined the gutter with a jointless EPDM sheet dressed up under the roof sheets, and covered the damaged sheet areas with bonded EPDM. Instead of handing over on a visual check, the team then flood-tested the treated zones with hoses, deliberately putting more water on the roof than a typical Gulf downpour, to prove every repair before sign-off.

Failure points treated on this roof

• End laps (horizontal joints)

  Horizontal sheet overlaps cleaned and closed with a continuous EPDM strip.

• Eave, valley & box gutters

  Gutter beds lined with a jointless EPDM sheet dressed up under the roof sheets.

• Rust & corroded sheet treatment

  Corroded areas cleaned back and covered with EPDM before they perforate.

• Flood / water testing

  Treated zones hosed and flood-tested on site before handover.

Materials & method

• EPDM membrane (1.2 mm) cut to width for each detail: UV-stable and flexible at Gulf roof temperatures.
• Promax Bonding Adhesive, rated for surface temperatures up to 120°C, for a permanent bond to the metal sheets.
• Preparation first: old coatings, failed sealant and loose rust removed so the membrane bonds to sound metal.
• Roof-side, zone-by-zone execution so the building below keeps operating with no shutdown.
• Working-at-height HSE: trained crews, full PPE and safety lifelines on every roof.

The result

The warehouse was handed over with each zone tested and documented. Because EPDM stays flexible at roof-surface temperatures that crack bitumen, the repairs are built to last through repeated Eastern Province summers.