Hotels & commercial buildings

From the rooftop to the car park.
We keep the whole building dry.

Roofs, helipads, car-park decks and structural repair: we choose the system that fits the building, then build it up in the right order, from substrate to top coat. When PASSAWARN installs, the manufacturer’s warranty applies.

Talk to us on LINE See what we protect ↓

Companies we’ve worked with

Four Seasons · Mandarin Oriental · Dusit Thani · So Sofitel · Stock Exchange of Thailand

Where we protect, and with which layers.

Tap a part to see how its layers are built and where we’ve done it.

Other methods

Roof waterproofing

We choose the system by whether the roof can be drilled, its shape and how much equipment sits on it.

For roofs that can be drilled. The sheet is screwed to the deck and the seams are heat-welded into one piece.

Exposed PVC membraneReinforced sheet that stands up to the sun. Screwed down; seams heat-welded.
Protection fleeceA fleece that separates the sheet from the deck.Where needed
Concrete substrateClean, dry concrete, ready for the first layer.substrate

Layer thicknesses are exaggerated for clarity. Built up from the bottom.

Our work on this part

Mandarin Oriental Hotel, BangkokSheet membrane

Dusit Thani PattayaSheet membrane

So Sofitel Hua HinSheet membrane

Also with this method: Muang Thai Insurance · Landmark Waterfront · JW Marriott Khao Lak Family Resort · Liberty Square · Dusit Thani Hua Hin

Ask about this part See materials ↗

When we install,
the manufacturer’s warranty applies.

Not just a contractor’s promise, but a promise from the technology owner. We deliver whatever brand the spec calls for.

Our work in hotels and commercial buildings

See all projects on the map →

Four Seasons Hotel Bangkok Polyurethane deck coating Layers: Helipad →

Mandarin Oriental Hotel, Bangkok Sheet membrane Layers: Roof waterproofing →

Dusit Thani Pattaya Sheet membrane Layers: Roof waterproofing →

So Sofitel Hua Hin Sheet membrane Layers: Roof waterproofing →

BMW German Auto Polyurethane deck coating Layers: Car-park deck →

NAP Hotel Crack injection Layers: Structural repair →

Stock Exchange of Thailand (SET), Bangkok Polyurea Layers: Roof waterproofing →

Mochit Complex Self-adhesive membrane Layers: Basement & slab →

Stock Exchange of Thailand (SET), Bangkok Epoxy flooring Layers: Floors →

We have also worked on

PTT OBA Knowledge Management System (Polyurethane (PU) Floor Coating) · BTS Visionary Park, Bangkok (HDPE Pre-Applied Underground Waterproofing Membrane)