Waterproofing Shah Alam: Find the Leak, Then Fix It
EI Sdn Bhd has waterproofed roofs, slabs and bathrooms from its base in Hicom-Glenmarie since 2006. Every job starts by tracing where the water gets in, not where it shows. Non-hacking bathroom waterproofing is from RM1,500 with 5 years warranty; everything else is quoted in writing after the inspection.
Top contractor grade, with specialisation B08 — waterproofing installation
Trading as Engineering Innovations before incorporating as EI Sdn Bhd in 2009
Non-hacking bathroom waterproofing, from — with 5 years warranty
Based in Hicom-Glenmarie; works across the Klang Valley
Why the Same Leak Gets Paid For Twice
Owners on Malaysian property forums describe the same pattern again and again: a leak is patched, the stain dries, and two rains later it is back in almost the same place. Most of the time the repair was not badly done. It was done in the wrong place.
The water was never traced
Water rarely drips where it gets in. On a flat roof it can travel along a crack in the slab; in a bathroom it can run along the pipe sleeve under the tiles before it shows as a yellow ring on the ceiling downstairs. Sealing the spot where the stain appears treats the symptom. EI starts with the entry point — moisture readings, and on larger roofs a drone and drone-thermal survey — before anything is quoted.
The wrong treatment for the surface
A concrete roof slab, a metal deck, a tiled bathroom floor and a hairline crack in a wall do not fail the same way, and one product does not fix all four. A roof slab may need a membrane; a void behind a wall may need pressure grouting; a bathroom may not need its tiles broken at all. Choosing the method after the cause is found is the whole point of looking first.
Nobody you can check
“Too many scam now” is how one forum poster put it when asking for a contractor with a real warranty. EI SDN. BHD. is registered with the Construction Industry Development Board at Grade G7 in building, civil engineering and mechanical & electrical works, with specialisation B08, waterproofing installation. That is a public register: anyone can search it and see the grade and the expiry date.
The price only appears on site
Most waterproofing is genuinely quoted per job, because a 600 sq ft roof and a single balcony are not the same work. But one job is common enough to price in advance, so EI does: non-hacking bathroom waterproofing from RM1,500 per bathroom, with 5 years warranty. Everything else is quoted after the inspection, in writing, before work starts.
Two Kinds of Leak, Two Pages
People in Shah Alam search for these two problems in Malay, so each has its own page in Malay with the details that matter for that job.
How a Waterproofing Job Runs, Start to Finish
Four steps, and the order is the point: nothing is sealed until the source is known.
1. Inspection, free across the Klang Valley. Someone comes to the property, looks at where the water shows and works backwards to where it gets in. There is no charge for the visit or the quote. Reviewers on EI’s Google profile most often mention exactly this — a thorough inspection, with a moisture detector, and on some jobs a drone. For roofs and facades that are hard to reach, a drone-thermal survey shows wet areas the eye cannot.
2. A written explanation and quote. You are told what is leaking, why, and which method EI recommends — membrane, grouting, crack repair or non-hacking treatment — and what it costs. A leak that turns out to be a burst pipe rather than failed waterproofing is said so plainly, because that is plumbing, not waterproofing.
3. The treatment. EI’s own service list covers rooftop, bathroom, balcony and basement waterproofing, non-hacking and nano polymer treatments, heat-torch membranes, PU and epoxy coatings, non-shrink grout and pressure grouting for voids, and slab and hairline crack repair.
4. Making good, and the warranty. Where a ceiling or plaster has been damaged by the leak, EI reinstates it. Waterproofing work carries EI’s 5 years warranty — including the RM1,500 non-hacking bathroom package.
What You Can Check Before You Call
Every line below comes from a public record, not from marketing copy.
| Record | What it says | Where to check |
|---|---|---|
| CIDB grade | G7 in Building (B), Civil Engineering (CE) and Mechanical & Electrical (ME) | CIDB contractor search |
| CIDB specialisation | B08 — installation of waterproofing materials | CIDB contractor search |
| Registration valid | 13 February 2025 to 19 July 2027 | CIDB contractor search |
| Company | EI SDN. BHD., SSM 200901026221 (869323-D), incorporated 20 August 2009 | SSM |
| Business since | 2006, trading as Engineering Innovations | EI’s own website |
| Founder & director | Derrick Dev Kumar KChandrasegaran | SSM |
EI was founded by Derrick Dev Kumar KChandrasegaran, who still directs it. The company describes its approach under the line “Inspiring Engineering”: source the product that suits the problem — nano polymer and non-hacking systems among them — rather than applying one coating to every leak.
Waterproofing Cost: What Is Published and What Is Quoted
The inspection is free and one price is fixed enough to publish. The rest depends on the size and state of the surface, and is quoted after that inspection.
| Job | How it is priced | Price |
|---|---|---|
| Inspection and leak tracing | Moisture readings, then a written quote | Free |
| Non-hacking bathroom waterproofing | Per bathroom, tiles stay in place, 5 years warranty | From RM1,500 |
| Roof and slab waterproofing | By area and system after inspection | Quoted |
| Crack repair and pressure grouting | By the length and depth of the crack or void | Quoted |
| Balcony, basement and wall damp | By area after inspection | Quoted |
For comparison, published 2026 price guides for the Klang Valley put a full bathroom re-waterproof with hacking at roughly RM4,500–RM9,000, and a single roof leak patch at RM300–RM800. The bathroom figure is why the non-hacking route exists; the roof figure is why a patch that misses the entry point is the most expensive repair of all — you pay for it every year. More on this in roof leak repair cost in Malaysia.
Condo Owners: The Leak From Upstairs
In a strata building, a leak through your ceiling is presumed to come from the unit above unless it is shown otherwise. The process is set out in the Strata Management Regulations: you notify your JMB or MC, they inspect within seven days, and they issue a Certificate of Inspection — Form 28 — naming the cause and who must fix it.
EI does not issue Form 28; the management body does. What EI provides is the diagnosis that tells everyone where the water is actually coming from, and the repair. For the owner upstairs, the non-hacking method means fixing the bathroom without a week of hacking and re-tiling. The full process is in inter floor leakage in Malaysia: who pays.
When Shah Alam Roofs Start Leaking
MetMalaysia notes that on the west coast of Peninsular Malaysia, thunderstorms produce the highest average monthly rainfall during the two monsoon transition periods — roughly April to May and October to November. Those are the weeks when an old crack in a roof slab turns into a drip. An inspection a month before either window is cheaper than a ceiling repair after it.
EI’s service list also covers work that is not a leak yet: coating a roof before the rains, repairing hairline cracks in slabs and walls, and treating basements, where water pushes in from the ground outside.
On Site With EI
Inspection first, then the treatment the surface needs.
Not Sure What Is Leaking?
Send a photo of the stain and tell us when it appears — during rain, after a shower, or all the time. That alone usually narrows it down to roof, bathroom or pipe.
💬 Describe the Leak on WhatsAppReplies come from the Service Pro team, not an automated bot.
Frequently Asked Questions
What people ask before booking a waterproofing inspection in Shah Alam.
No. The inspection and the written quote are free anywhere in the Klang Valley, whether or not you go ahead with the work.
The inspection is free. Non-hacking bathroom waterproofing starts from RM1,500 per bathroom, with 5 years warranty. Roof, slab, balcony and crack work is quoted after that inspection because the area and condition vary. For context, 2026 Klang Valley price guides put a hacked-and-rebuilt bathroom at roughly RM4,500 to RM9,000.
Yes. EI SDN. BHD. is registered with CIDB at Grade G7 in building, civil engineering and mechanical & electrical works, with specialisation B08 for waterproofing installation. The registration runs to 19 July 2027 and can be checked on CIDB’s public contractor search.
Not with the non-hacking method. The floor is treated with the tiles left in place, which avoids the week of hacking and re-tiling that a full rebuild takes. Whether a bathroom suits the method is decided at the inspection.
EI gives 5 years warranty on its waterproofing. It covers roof work and the RM1,500 non-hacking bathroom package.
That is the first step of every job. EI inspects with moisture readings and, where a roof or facade is hard to reach, a drone and drone-thermal survey. Nothing is quoted until the likely entry point is known.
Then you are told so. A pipe leak inside a wall or under a floor is plumbing work. Air Selangor’s own advice is to close every tap and watch the water meter for about an hour — if it still moves, there may be an internal pipe leak.
EI is based in Hicom-Glenmarie, Shah Alam, and works across Shah Alam, Klang, Subang Jaya, Kajang, Puchong and Kuala Lumpur.
Your JMB or MC. Under the Strata Management Regulations they inspect within seven days and issue Form 28 naming the cause and who must repair it. EI can diagnose the source and carry out the repair for whichever owner is responsible.
Related Insights
Worth reading before the inspection.
Book a Waterproofing Inspection in Shah Alam
Tell us where the water shows and when. The inspection finds where it gets in; the quote is in writing before any work starts.
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