AQ Co., Ltd. Tile Exterior Renovation|AQ SHIELD (Liquid Glass)
03-6311-7674
9:00–18:00 (closed Sat/Sun/holidays)
JP
Exterior of a tile-clad building
Serving Kanto | Tokyo · Saitama · Chiba · Kanagawa · Ibaraki

Large-scale renovation,
specialized in tile-clad buildings & condos. For tile that "no paint could coat" — AQ SHIELD.

Repair it, wash it, reseal the joints — and the tile is still handed back unprotected. AQ SHIELD liquid glass is the coating that can finally be applied to tile exteriors, helping to extend the life of the building itself.

  • ✓ Direct construction — fair pricing, no middleman markup
  • ✓ Liquid glass that does not yellow or peel
  • ✓ Free on-site survey & estimate

For owners, management associations, and property management companies of tile-clad buildings and condominiums

Most buildings and condominiums in Japan are clad in tile

Japan has a great many tile-clad buildings and condominiums, and many of them have aged to the point where large-scale renovation is due. Yet for tile exteriors, there was long no paint that could be used as the finishing coat in a renovation. A painted wall can take silicone or fluoropolymer coatings — tile is a different problem. That "nothing can be applied" bottleneck is exactly the problem we have been solving with AQ SHIELD.

Sound familiar? Common worries about tile exterior renovation

  • Worried about tiles lifting or detaching — you want to act before a tile falls and causes an accident
  • Even after renovation, there is nothing to coat the tile with, so it keeps deteriorating unprotected
  • A clear coating applied before started peeling within a few years and led to complaints
  • Quotes from major firms are expensive, and you cannot see where the money is going
  • You want to stretch the interval until the next renovation as long as possible and cut long-term repair costs
Exterior of a tile-clad condominium, showing the tile joints and texture across the whole wall (illustrative photo)
* Illustrative photo of a tile-clad condominium
Why AQ 01

Direct construction, no middleman markup — the same work for less

In the large-scale renovation industry, it is not uncommon for the company that actually does the work to be a third-tier subcontractor. A major construction or renovation firm wins the contract, and each time the job passes down to another subcontractor, an intermediary margin is added on top — and that markup lands in your quote. We work differently: the point of contact and the construction are directly connected. With no intermediary margins, we can offer the same scope of work at a fair price.

The typical contracting structure

Third-tier subcontracting
  • Owner / Management association
  • Major construction firm / prime contractor+ intermediary margin
  • Subcontractor+ intermediary margin
  • Third-tier subcontractor (the company that actually does the work)

Costs are added at every step, and the quote ends up inflated

AQ Co., Ltd. — direct construction

No intermediary margins
  • Owner / Management association
  • AQ Co., Ltd. (your single point of contact for consultation & estimates)
  • Our construction team does the work directly

No markup skimmed off, so the same work costs less. And with the office and the site directly connected, communication is fast and nothing gets lost in translation

It is not just about being cheaper. Because no margin is skimmed off, that money can go into the work itself — careful tile repairs and a proper AQ SHIELD finish. That is another major advantage of direct construction. Our estimates itemize every cost, so you can see at a glance exactly what you are paying for.
Background

Why are tile buildings handed back "bare" today?

Today's standard tile renovation is "wash it, fix it, reseal it — done." There is a clear reason the finishing coat disappeared.

  1. In the past

    A clear finishing coat was the norm

    Pressure-wash the dirt away, repair and inject the tiles, reseal the joints — then finish with a fluoropolymer or silicone clear coat to protect the tile. That was the standard shape of a tile renovation.

  2. 3–4 years later

    The clear coats peeled, one after another — and complaints followed

    The applied clear coats began peeling within 3–4 years, with partial detachment and patchy, mottled-looking residue spoiling the appearance. Removing the failed coat cost extra money, so manufacturers and contractors alike walked away from clear coating.

  3. The last ~10 years

    The industry standard became the "bare handover"

    Detached tiles are fixed with repairs and injection, everything is washed clean, and the building is handed back — with nothing protecting the tile itself. That is tile renovation today. Water repellents exist as an option, but they last only about six months and do nothing to extend the life of the tile.

  4. From now on

    With AQ SHIELD, tile has its "final step" back

    AQ SHIELD liquid glass can be applied to tile without yellowing, and it does not peel away. It protects the repaired tile exterior with a glass film and helps extend the life of the building itself. That is the finish large-scale renovation has been missing.

A mid-rise tile-clad condominium with scaffolding up for large-scale renovation work
* Illustrative photo of exterior renovation work
Why AQ 02

AQ SHIELD (liquid glass) extends the life of tile buildings

AQ SHIELD is a liquid-glass coating offered by AQ Co., Ltd. Unlike resin-based clear paints, it covers the tile with a film of glass, so it does not yellow and does not peel away. Tile exteriors that "had nothing that could be applied" finally have a finish that belongs there.

Does not yellow

Resin-based clear coats can yellow under ultraviolet light, but a glass film resists discoloration and preserves the tile's original color and texture as they are. The building keeps its good looks for longer.

Does not peel

Where fluoropolymer and silicone clear coats peeled within 3–4 years and drew complaints, liquid glass bonds with the tile as if becoming one with it — so there is no extra cost of stripping and recoating.

Extends the life of the building itself

The glass film shields tile and joints from rainwater, dirt, and ultraviolet light, slowing the progress of deterioration itself. Rather than making the building look young again at each renovation, this is a coating that extends the building's life.

Comparing the finishing options

AQ SHIELD (liquid glass)Water repellentConventional clear paint (fluoropolymer / silicone)
Can it be applied to tile?YesYesYes, but repeated problems mean the industry has largely stopped using it
How long it lastsThe glass film protects tile over the long termEffect fades after about 6 monthsOften starts peeling after 3–4 years
YellowingDoes not yellow—Can occur
PeelingDoes not peelForms no film, so no peeling — but protection is limitedMany complaints about detachment and patchy, mottled residue
Extends tile lifeYes (slows the progress of deterioration)No (temporary water repellency only)Can backfire — even removal costs arise

So the job does not end with a "bare handover." A large-scale renovation is only complete when the repaired tile is finished with AQ SHIELD.

Case Studies & Track Record

How much a tile building can change with renovation

Actual large-scale tile-exterior renovations carried out by AQ Co., Ltd., plus a contract won in a three-way competitive estimate.

Funabashi, ChibaActual project photosTile-clad buildingApprox. 35 years oldColor change

A tile building about 35 years old, renewed with a modern new color. After renovation: 100% occupancy — fully let

A large-scale renovation of a tile-clad building in Funabashi, Chiba, about 35 years after construction. With scaffolding up, we pressure-washed the walls, repaired tiles, and resealed the joints, then finished with a color change using AQ SHIELD Color. The beige tile with a green band seen during construction (left) was reborn after the work (right) as a clean, modern gray exterior. The tile's texture stays exactly as it was — this is how much a color change alone can transform a building's impression.

Before / During A tile-clad building with scaffolding up for large-scale renovation, workers lined along the scaffolding on each floor (actual project photo)
Before the color change — beige tile with a green band (during renovation, scaffolding in place)
After The tile-clad building after its color change — a renewed, modern gray exterior (actual project photo)
After the color change — a modern exterior renewed in gray tones

* These are actual photos of this Funabashi project (not illustrative images).

"Repainted — yet it looks as if the tiles had been replaced."

Paint an ordinary color onto a tile building and the thick paint film buries the tile's texture and joints, leaving an obviously "painted" look that feels unnatural. AQ SHIELD has a thin film, and its inorganic pigments bond directly to the tile, so only the color changes while the texture and joints remain exactly as they were. That is why the finish does not look painted — it looks as if the tiles had been replaced with tiles of a different color. That is what makes this such a breakthrough for recoloring tile.

Close-up of a tile exterior's joints and texture — the joint lines of each gray tile remain clearly visible Joints and texture, fully preserved
Close-up of the tile wall — the color changed, but the joint lines and tile texture remain exactly as they were

Color change with ordinary paint

The thick film buries the tile's texture and joints. The "painted" look shows, and the character of a tile building is lost.

Color change with AQ SHIELD

The film is thin and the inorganic pigments bond to the tile. Only the color changes while texture and joints remain — a finish that looks re-tiled.

Before the renovation, occupancy stood at 75%, with vacancies clearly visible. Once the work was complete, occupancy reached 100% — fully let. The reborn exterior helped draw tenants in, and the owner was delighted with the result.

Featured in the media

This project was covered by a magazine for property owners. Once the issue is published, we will share the owner's comments on this page.

A color change does more than transform a building's impression — it creates an exterior that prospective tenants choose. The older a tile building is, the more clearly the effect of renovation shows, as this project demonstrates.

Ichikawa, ChibaCase study8-story condominiumApprox. 15 years old

Protecting the tile with its color and texture intact. An AQ SHIELD clear-coating project

A large-scale renovation of an 8-story condominium in Ichikawa, Chiba, about 15 years after construction. After tile repairs, pressure washing, and joint resealing, the finish was a clear coat of AQ SHIELD. No color change — the glass film protects the exterior while keeping the tile's original color and texture exactly as they are.

Conventional fluoropolymer and silicone clear paints tended to start peeling 3–4 years after application and draw complaints. The AQ SHIELD clear coat does not yellow and does not peel, making it the right finish for properties where the goal is "protection, without changing how the tile looks."

The photos on the right show the exterior before and after; the photos below show the rooftop penthouse's exterior tile and joints before and after. Finishing down to the details sharpens the impression of the whole building.

Ichikawa — approx. 15 years old, 8-story condominium / AQ SHIELD clear coating

Before Exterior of the approx. 15-year-old, 8-story tile-clad condominium in Ichikawa, Chiba, before renovation (actual project photo)
Ichikawa condominium exterior — before
After Exterior of the tile-clad condominium after renovation, finished with an AQ SHIELD clear coat (actual project photo)
Exterior after renovation — AQ SHIELD clear coating

* Actual project photos, as published on aqshield.com (not illustrative images)

Before Exterior tile and joints of the Ichikawa condominium's rooftop penthouse, before the work (actual project photo)
After Exterior tile and joints of the rooftop penthouse after the work, finished with an AQ SHIELD clear coat (actual project photo)

The rooftop penthouse's exterior tile and joints, before and after. Finishing down to the details sharpens the impression of the whole building.

"No color was applied — yet the color came back to life."

After about 15 years, tile begins to fade and dull under ultraviolet light and rain. Rooftop penthouses are especially exposed to UV, and this site is close to the sea, so salt-laden winds (salt damage) had taken their toll as well — the tile surface was considerably deteriorated. But once the AQ SHIELD clear coat is applied, without any colored paint being added, the faded tile's color and sheen return, reviving a like-new appearance. And the tile's texture is preserved just as it is — the clear coat is a finish that does not merely protect; it brings the appearance back to life, too.

Before Close crop of the rooftop penthouse tile before the work — a faded, dulled tile surface with streaks of grime (cropped from an actual project photo)
Before — faded, dulled tile
After Close crop of the rooftop penthouse tile after the AQ SHIELD clear coat — a tile surface with its color and sheen restored (cropped from an actual project photo)
After — tile with its color and sheen restored

The penthouse tile, cropped at the same size before and after and placed side by side. No color was applied — compare how the color has come back.

Track RecordThree-way competitive estimate8-story condominium

Chosen in a three-way estimate — not just for price, but for the work itself

For the large-scale renovation of an 8-story condominium, three companies submitted competing estimates. Against another company's estimate of about ¥26 million, AQ Co., Ltd. came in at about ¥23 million — a difference of about ¥3 million. And because our scope of work was better than the competitor's, we won the contract. Chosen not only for price, but for content.

Precisely because our construction is direct, with nothing skimmed off in the middle, we can hold the price down and put the difference into the work itself. This is the structure explained in the "Direct Construction" section above, borne out in an actual contract.

You are welcome to use us for comparison in a competitive estimate, too. Start with a free survey & estimate.

How It Works

From consultation to handover

It starts with a free on-site survey. We diagnose lifting tiles, cracks, and the condition of the sealant, then present an estimate that includes only the work that is actually needed.

  1. 1

    On-site survey & diagnosis

    We check on site for lifting tiles and signs of detachment, cracks, sealant deterioration, and rainwater intrusion risks (free of charge).

  2. 2

    Estimate & proposal

    A fully itemized estimate at the fair pricing that only direct construction allows (free of charge).

  3. 3

    Pressure washing

    Years of grime, moss, and deteriorated deposits are washed away, bringing back the tile's original appearance.

  4. 4

    Tile repair & injection

    Injection into lifted tiles, re-tiling of detached areas, crack repairs — the substrate is properly put right.

  5. 5

    Joint resealing

    Deteriorated joint sealant is replaced, closing off the paths rainwater takes into the wall.

  6. 6

    AQ SHIELD coating

    The finish: AQ SHIELD liquid glass is applied, protecting the whole tile surface with a glass film and extending its life.

  7. 7

    Inspection & handover

    We confirm the finish together and hand the building back. A report of the work is provided.

Service Area

Serving five prefectures across the Kanto region

We undertake large-scale renovations of tile-clad buildings and condominiums in the areas below. For properties outside these areas, please feel free to consult us first.

TokyoAll areas
SaitamaAll areas
ChibaAll areas
KanagawaAll areas
IbarakiAll areas
FAQ

About tile exterior renovation

Q.Was there really no paint that could be applied to tile exteriors?

That is right. Fluoropolymer and silicone clear paints often started peeling 3–4 years after application and led to complaints, and removing them cost money too — so for about the last ten years, the industry has largely stopped clear-coating tile at all. The remaining option, water repellent, lasts only about six months and does not extend the tile's life. AQ SHIELD liquid glass neither yellows nor peels, so we offer it as a realistic finish that can be applied to tile.

Q.Why can you charge less than other companies' estimates?

Large-scale renovation typically flows from a major firm or prime contractor down through subcontractors to a third tier, with an intermediary margin added at each step. Our point of contact (AQ Co., Ltd.) and our construction are directly connected, so those intermediary margins do not exist. Even for the same scope of work, the cost breakdown is straightforward — which is how we offer a fair price.

Q.Are the on-site survey and estimate really free?

Yes. For properties in the Kanto region (Tokyo, Saitama, Chiba, Kanagawa, Ibaraki), the on-site survey, diagnosis, and estimate are all free. Based on the survey results, we explain which work is needed and which is not — please feel free to use our estimate for comparison in a competitive quote.

Q.Can we consult you about partial repairs only, such as lifting or detached tiles?

Yes, please do. We first confirm the extent and cause of the lifting or detachment at an on-site survey, diagnose whether the building needs large-scale renovation or can be handled with partial repairs, and then make our proposal. Detached tiles can lead to falling-tile accidents, so if there is an area that concerns you, we recommend a survey sooner rather than later.

Q.Do you accept consultations from management associations and property management companies?

Yes. In addition to individual owners, we accept consultations and estimate requests from management associations and property management companies. We prepare clear documents breaking down the work and its costs, suitable for explanation at board meetings and general assemblies.

Q.Can we consult you about a property outside your service area?

Our main service area is the Kanto region (Tokyo, Saitama, Chiba, Kanagawa, Ibaraki). For large properties outside the area and similar cases, please consult us individually. Start by letting us know the property's location and outline by phone or email.

First, let us diagnose the condition of your tile — free of charge

"Can AQ SHIELD be applied to our building?" "We would like to compare against a major firm's quote." — The first step is a free on-site survey. No pushy sales, ever.

03-6311-7674

Hours: 9:00–18:00 (closed Sat, Sun & holidays) | AQ Co., Ltd.

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Company Overview

Company
AQ Co., Ltd.
Address
GIRAC GINZA 8F, 6-13-9 Ginza, Chuo-ku, Tokyo 104-0061, Japan
TEL
03-6311-7674
FAX
03-6311-7675
Email
aqshield123@gmail.com
Hours
9:00–18:00 (closed Sat, Sun & holidays)
Business
Large-scale renovation of tile-clad buildings and condominiums / Sales and application of the liquid-glass coating "AQ SHIELD"
Service area
Kanto region (Tokyo, Saitama, Chiba, Kanagawa, Ibaraki)
Web
aqshield.com
Call Us Free Survey & Estimate