Welcome to TW ENGINEERING LIMITED 歡迎瀏覽誠信防水工程有限公司
We waterproof your asset
TW Engineering Limited is a Hong Kong based contractor specializing in waterproofing works. 誠信防水工程有限公司是一所香港工程承建商.
Waterpoofing works and water penetration repair
About TW Engineering Limited
We Use Professional Equipment and Premium material
We perfect our job with the right tools. Depending on the scale of the projects, we use US imported brand Graco proportioner systems of multiple levels to ensure precise mixing of material and satisfied finishing.
The waterproofing materials we use is from European brands such as Mapei, Sika, Basf, Forsroc, De neef, etc. We adapt reliable and up-to-code products for the best interest of client.
Some of Our
Services
Polyurea membrane waterproofing system, Waterproofing Injection Solutions and Cementitious waterproofing membrane

Cementitious waterproofing system
Mapei Mapeleastic 331 / SikaTop®-107 Seal HK - Suitable for bathroom, terrace, balcony and kitchen.

POLYUREA MEMBRANE WATERPROOFING SYSTEM
Mapei Purtop Systems - Thanks to its high tensile strength and excellent flexibility, polyurea waterproofing membrane system is suitable for large flat roofs. In addition, the polyurea membrane is resistant to alkalis and diluted acids.

Waterproofing injection solutions
DE NEEF® waterproofing injection solutions with cementitious waterproofing membrane provides solid protection to damp penetrating area.
Professional works, protected area
Job reference

Facade waterproofing work – Purtop 400M HK Polyurea System @Dai Fat Street, Tai Po
Area: ~2000m2, 2019

Roof waterproofing work – Purtop 400M HK Polyurea System @Shan Mei Street, Fo Tan
Area: ~1200m2, 2021

Waterproofing works for a house @ Cedar Drive, Red Hill Peninsula
Purtop 400M HK Polyurea System with insulated screed protection layer: Roof, Balconies and Gardens
Purtop 400M HK Polyurea System: Door/Window frames, and A/C room
Mapelastic 331 Cementious waterproofing membrane: Bathrooms, and Kitchens
DE NEEF® Waterproofing injection at existing damp penetrating spots

Podium waterproofing work – Purtop 400M HK Polyurea System with cement sand screed protection layer @Pakpolee Commercial Centre Mong Kok
2021

Roof waterproofing work – Purtop 400M HK Polyurea System @CLP Ping Shan Electrical Substation, Yuen Long
AREA: ~90M2, 2019

Facade waterproofing work – Purtop 400M HK Polyurea System @Dai Fat Street, Tai Po
Area: ~2400m2, 2022

Roof waterproofing work – Purtop 400M HK Polyurea System with UV resistant Topcoat @Sun Yip Street, Chai Wan
Area: ~700M2, 2021

Roof waterproofing work – Purtop 400M HK Polyurea System with UV resistant Topcoat @Pui Tak St, Pak Tin
Area: ~600M2, 2021

Roof waterproofing work – Purtop 400M HK Polyurea System with cement sand screed protection layer @International Christian School, Shek Mun
Area: ~800M2, 2021

Roof waterproofing work – Purtop 400M HK Polyurea System with UV resistant topcoat @Metropolitan Industrial and Warehouse Building No 2, Tsuen Wan
Area: ~750m2, 2022
Pick The Plan That Best Suits Your Needs
We provide multiples waterproofing solutions to your residential appartement, from gardens to bathrooms, or commercial warehouse, from roof to podiums, for both temporary, and long term protection from the unwanted moisture.
Up to ten years of
Waterproofing warranty
- Waterproofing Warranty from us
- Material Warranty (Mapei Polyurea System exclusive)
- Free on-site inspection for quotes
- Water Flooding/Spraying Test
- Infrared Water Leaks Detection