Question 1

How long does waterproofing last in Singapore?

Accepted Answer

A professionally applied waterproofing system typically lasts 5-10 years or more, depending on the area, the system used and exposure to sun and rain. Hydroseal backs completed work with a Certificate of Warranty of 1-10 years. Singapore’s intense UV and monsoon rain are why surface preparation and the right product matter as much as the application itself.

Question 2

How much does waterproofing cost in Singapore?

Accepted Answer

Cost depends on the area treated, the access required and the system chosen, a small non-hacking bathroom repair is very different from re-membraning a roof. Rather than guess, we provide a free, no-obligation site inspection and a written quotation so you know the price before committing.

Question 3

Do you waterproof HDB flats?

Accepted Answer

No. Hydroseal serves private property, condominiums and landed homes (terrace, semi-detached and bungalow). For HDB common-area seepage, your town council or HDB is usually the right first point of contact.

Question 4

Do I have to hack my bathroom to stop a leak?

Accepted Answer

Not always. If the leak is from cracks or joints, non-hacking PU grouting can seal it without removing tiles. If the membrane under the floor has broadly failed, hacking and re-laying is more reliable. We recommend the method that genuinely solves the problem, not the most expensive one.

Question 5

My ceiling is leaking, is it the bathroom above or the roof?

Accepted Answer

It can be either, and the stain often appears away from the real source because water travels along the slab. The only reliable way to know is a proper diagnosis: we trace the water path before recommending any work, so you do not pay to fix the wrong thing.

Question 6

Is the site inspection really free?

Accepted Answer

Yes. We provide a free, no-obligation inspection and written quote. You decide once you are comfortable with the diagnosis and price.

Question 7

Do I need a BCA façade inspection?

Accepted Answer

Singapore’s BCA requires periodic façade inspection for applicable buildings under the Periodic Inspection regime, on a recurring cycle (commonly every five years for private buildings once they reach the qualifying age). Your exact obligation depends on the building’s age, height and use. We can advise and carry out the survey, but always confirm specifics with BCA.

Question 8

Can you work without scaffolding the whole building?

Accepted Answer

Yes. Our IRATA-certified rope-access teams reach façades and high-level walls directly, which is faster to mobilise and far cheaper than full scaffolding for most repair and survey scopes, and it keeps walkways and car parks open.

Question 9

Do you provide documentation for compliance and building records?

Accepted Answer

Yes. We supply method statements and risk assessments before works and a photographic record on completion. Façade inspections come with a full condition report and photographic evidence suitable for BCA filing.

Question 10

How do you minimise disruption to tenants?

Accepted Answer

We phase works and can operate at night or over weekends. Rope access avoids the obstruction of scaffolding, and we cordon and protect work zones so the building keeps running.

Question 11

Are you licensed and insured?

Accepted Answer

Yes, Hydroseal is a licensed, fully insured contractor, bizSafe certified, with IRATA-qualified rope-access technicians, and 1,000+ projects completed since 1995.

Question 12

Can you re-coat a large industrial roof without stopping production?

Accepted Answer

In most cases yes, we phase the works area-by-area, use fast-curing systems and access the roof externally so the floor below keeps operating. We agree the programme with you in advance to protect output.

Question 13

Is re-coating a metal roof cheaper than re-roofing?

Accepted Answer

For a structurally sound metal roof, re-coating, sealing seams and fasteners then applying a protective coating, is usually far cheaper than full re-roofing and adds years of life. We only recommend replacement when re-coating will not last.

Question 14

Do reflective roof coatings help with heat?

Accepted Answer

They can lower roof-surface temperature and reduce heat gain into the building below, a useful benefit for warehouses and factories on top of the waterproofing itself.

Question 15

What is the difference between sheet and liquid waterproofing membranes?

Accepted Answer

Sheet membranes (such as torch-on bituminous rolls) are pre-formed and bonded down, robust and consistent in thickness, ideal for larger flat roofs. Liquid membranes are applied as a coating that cures into a seamless film, excellent around complex details, upstands and penetrations. The right choice depends on the surface, the detailing and the exposure.

Question 16

What is PU grouting?

Accepted Answer

PU (polyurethane) grouting injects a resin into cracks, joints and slabs that reacts and expands to seal the water path from within. It is the basis of most non-hacking leak repairs because it stops leaks without removing finishes.

Question 17

What is crystalline waterproofing?

Accepted Answer

A cementitious system that reacts with moisture in concrete to grow crystals inside the pores and hairline cracks, sealing the concrete from within. It is durable and well-suited to tanks, basements, planters and decks because it becomes part of the concrete.

Question 18

What causes spalling concrete and can it be fixed?

Accepted Answer

Spalling occurs when water reaches the steel reinforcement inside concrete; the steel rusts, expands and breaks off the concrete cover. It is repairable, we treat the corroded rebar, reinstate the concrete with repair mortar, and waterproof over it so it does not recur.

Question 19

What does the Certificate of Warranty cover?

Accepted Answer

It covers the waterproofing system we install against failure within the agreed term (1-10 years depending on the system), giving you a single point of accountability if an issue arises. See our Warranty page for what is included and how to make a claim.

Question 20

Do you handle both residential and commercial properties?

Accepted Answer

Yes. Hydroseal works across private homes, commercial buildings and industrial facilities, and offers both waterproofing and IRATA rope access in one company, so high-level work needs only one contractor.

Waterproofing questions, answered

For homeowners

For facility & building managers

For factory & warehouse owners

Methods, materials & warranty

Still have a question? Just ask.