{"id":2769,"date":"2026-07-03T07:52:14","date_gmt":"2026-07-03T07:52:14","guid":{"rendered":"https:\/\/siliconecrew.com\/blog\/?p=2769"},"modified":"2026-07-15T15:16:34","modified_gmt":"2026-07-15T15:16:34","slug":"silicone-vs-pu-sealant-bathroom-facade-or-structural-pick-the-right-one","status":"publish","type":"post","link":"https:\/\/siliconecrew.com\/blog\/silicone-vs-pu-sealant-bathroom-facade-or-structural-pick-the-right-one\/","title":{"rendered":"Silicone vs PU Sealant \u2014 Bathroom, Fa\u00e7ade, or Structural: Pick the Right One"},"content":{"rendered":"\n

Imagine I hand you two identical white cartridges.<\/p>\n\n\n\n

I remove the labels.<\/p>\n\n\n\n

I place them on a table and ask you a simple question:<\/p>\n\n\n\n

Which one would you trust to protect a \u20b950 crore glass fa\u00e7ade for the next twenty years?<\/strong><\/p>\n\n\n\n

You can’t answer it.<\/p>\n\n\n\n

Not because you aren’t experienced. Not because you don’t understand construction. Simply because, from the outside, the two products look almost identical.<\/p>\n\n\n\n

Yet one cartridge may be engineered to survive relentless UV exposure, heavy monsoon rain, fa\u00e7ade movement, and years of thermal expansion. The other may excel in completely different conditions but fail much sooner if used in the wrong application.<\/p>\n\n\n\n

This is where countless construction decisions quietly go wrong.<\/p>\n\n\n\n

Contractors compare prices. Procurement teams compare brands. Homeowners compare cartridge sizes. Almost nobody compares the chemistry.<\/p>\n\n\n\n

And chemistry is exactly what determines whether a joint performs flawlessly for decades\u2014or quietly begins failing long before the building reaches its first major maintenance cycle.<\/p>\n\n\n\n

Silicone and polyurethane (PU) sealants are often treated as alternatives. In reality, they solve different engineering problems. Knowing which one belongs where isn’t product knowledge\u2014it’s risk management.<\/p>\n\n\n\n

“The cost of the sealant is almost nothing compared to the cost of the fa\u00e7ade it protects. The only expensive decision is the wrong one.”<\/p><\/blockquote><\/figure>\n\n\n\n

First \u2014 what are these two products, actually?<\/h2>\n\n\n\n

Before we get into which one goes where, it helps to understand what you’re actually working with. Not the chemistry degree version \u2014 just enough to make the right call on site or when briefing a contractor.<\/p>\n\n\n\n

Silicone sealant<\/h3>\n\n\n\n

Silicone is an inorganic material \u2014 meaning it’s built on a silicon-oxygen backbone rather than carbon. That one fact explains almost everything about how it behaves.<\/p>\n\n\n\n

Because it’s inorganic, it doesn’t break down the way organic materials do.<\/p>\n\n\n\n

UV radiation, ozone, extreme heat, prolonged moisture exposure \u2014 none of these significantly affect silicone’s structure. It stays flexible, stays bonded, and stays put for up to 20 years in the right application.<\/p>\n\n\n\n

The trade-off: silicone is generally not paintable, doesn’t bond well to wood or concrete without a primer, and can be slippery to tool. Once cured, it’s also quite difficult to remove completely.<\/p>\n\n\n\n

Polyurethane (PU) sealant<\/h3>\n\n\n\n

PU is an organic compound \u2014 formed from a chemical reaction between polyols and isocyanates.<\/p>\n\n\n\n

It cures through moisture absorption, creating a rubber-like, flexible seal with excellent adhesion to a very wide range of porous surfaces: concrete, wood, masonry, brick.<\/p>\n\n\n\n

It can be painted. It sands well. It tends to have higher abrasion and tear resistance than silicone.<\/p>\n\n\n\n

The trade-off: PU is organic, which means it can degrade under prolonged UV exposure \u2014 it yellows, becomes brittle, and loses flexibility over time unless specially formulated with UV stabilisers.<\/p>\n\n\n\n

It also has lower movement capability than silicone (typically \u00b125\u201335% versus silicone’s \u00b150%), and in high-humidity environments, some PU formulations develop pinholes during curing \u2014 small bubbles trapped in the sealant body that compromise the seal.<\/p>\n\n\n\n

Silicone vs PU Sealant: Why Do So Many People Think They’re the Same?<\/h2>\n\n\n\n

Walk into any silicone sealant dealer shop, and you’ll probably find both silicone sealants<\/strong> and polyurethane (PU) sealants<\/strong> sitting side by side.<\/p>\n\n\n\n

They often come in similar cartridges, are applied using the same caulking gun, and both claim to seal gaps, stop water leaks, and create flexible joints.<\/p>\n\n\n\n

At first glance, it’s easy to assume they’re simply different brands of the same product.<\/p>\n\n\n\n

In fact, this is one of the most common misconceptions among homeowners, contractors, architects, and even some construction professionals. It’s not unusual to hear questions like:<\/p>\n\n\n\n

Can I use PU instead of silicone?<\/strong><\/p>\n\n\n\n

Aren’t they both waterproof sealants?<\/strong><\/p>\n\n\n\n

If they both seal joints, why does it matter which one I buy?<\/strong><\/p>\n\n\n\n

Is polyurethane just a stronger version of silicone?<\/strong><\/p>\n\n\n\n

These are valid questions because silicone and PU sealants do share several important characteristics<\/strong>:<\/p>\n\n\n\n

What Silicone and PU Sealants Have in Common<\/h3>\n\n\n\n

At first glance, silicone sealants and polyurethane (PU) sealants appear remarkably similar.<\/p>\n\n\n\n

Similarity<\/th>Silicone Sealant<\/th>Polyurethane Sealant (PU)<\/th><\/tr><\/thead>
Packaging<\/td>Cartridges or sausages<\/td>Cartridges or sausages<\/td><\/tr>
Application Tool<\/td>Caulking gun<\/td>Caulking gun<\/td><\/tr>
Flexible after curing<\/td>Yes<\/td>Yes<\/td><\/tr>
Air Sealing<\/td>Water, Air and Dust Infiltration<\/td>Water, Air and Dust Infiltration<\/td><\/tr>
Dust Sealing<\/td>Yes<\/td>Yes<\/td><\/tr>
Exterior applications<\/td>Yes<\/td>Yes<\/td><\/tr>
Interior applications<\/td>Yes<\/td>Yes<\/td><\/tr>
Used in commercial buildings<\/td>Yes<\/td>Yes<\/td><\/tr>
Used in residential construction<\/td>Yes<\/td>Yes<\/td><\/tr>
Used around windows<\/td>Yes<\/td>Yes<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

If your only comparison is based on appearance or the general purpose written on the packaging, they can seem almost identical.<\/p>\n\n\n\n

However, this surface-level similarity is exactly where many costly mistakes begin.<\/p>\n\n\n\n

The reality is that while silicone and PU sealants may perform the same job<\/em>, they don’t perform it in the same way<\/em>. Their chemical composition, long-term durability, flexibility, UV resistance, adhesion properties, paintability, maintenance requirements, and ideal applications are fundamentally different.<\/p>\n\n\n\n

If They Have So Much in Common, Why Are They Treated So Differently?<\/h3>\n\n\n\n

By now, it’s easy to see why silicone and PU sealants are so often confused. They share many of the same goals: sealing joints, blocking water, remaining flexible, and protecting buildings from the elements.<\/p>\n\n\n\n

In everyday conversation, they can even seem interchangeable because they solve similar problems.<\/p>\n\n\n\n

But this is where many people make a costly assumption.<\/p>\n\n\n\n

However, beneath these similarities lie significant differences in chemistry, performance, durability, and intended applications. Choosing one based solely on appearance or price can lead to premature joint failure, water leakage, difficult maintenance, and unnecessary repair costs.<\/p>\n\n\n\n

What’s the difference between silicone and PU sealant?<\/h3>\n\n\n\n
Property<\/th>Silicone Sealant<\/th>PU (Polyurethane) Sealant<\/th>Which Performs Better?<\/th><\/tr><\/thead>
Base Chemistry<\/td>Polysiloxane<\/td>Polyurethane polymer<\/td>Different applications<\/td><\/tr>
Primary Purpose<\/td>Long-term weather sealing <\/td>Bonding, sealing<\/td>Depends on application<\/td><\/tr>
Typical Service Life<\/td>(10\u201325)+ years<\/td>5\u201315 years<\/td>Silicone<\/td><\/tr>
UV Resistance<\/td>Excellent<\/td>Moderate to good<\/td>Silicone<\/td><\/tr>
Weather Resistance<\/td>Outstanding in rain and sun<\/td>less durable<\/td>Silicone<\/td><\/tr>
Temperature Resistance<\/td>-50\u00b0C to +150\u00b0C<\/td>-40\u00b0C to +90\u00b0C<\/td>Silicone<\/td><\/tr>
Flexibility After Years<\/td>Retains flexibility for decades<\/td>Becomes harder with age<\/td>Silicone<\/td><\/tr>
Waterproof Performance<\/td>Excellent<\/td>Excellent<\/td>Tie<\/td><\/tr>
Adhesion Strength<\/td>Excellent<\/td>Superior than silicone<\/td>PU<\/td><\/tr>
Paintability<\/td>Cannot be painted<\/td>Easily paintable after curing<\/td>PU<\/td><\/tr>
Abrasion Resistance<\/td>Moderate<\/td>Excellent<\/td>PU<\/td><\/tr>
Application on Concrete<\/td>Good with suitable grade<\/td>Excellent<\/td>PU<\/td><\/tr>
Application on Wood<\/td>Fair to good<\/td>Excellent<\/td>PU<\/td><\/tr>
App. on Metal Fabrication<\/td>Good<\/td>Excellent<\/td>PU<\/td><\/tr>
Fa\u00e7ade Glazing<\/td>Industry standard<\/td>Rarely used<\/td>Silicone<\/td><\/tr>
Structural Glazing<\/td>Structural grades available<\/td>Not suitable<\/td>Silicone<\/td><\/tr>
Floor Joints<\/td>Less common<\/td>Widely preferred<\/td>PU<\/td><\/tr>
Industrial Floors<\/td>Less common<\/td>Preferred<\/td>PU<\/td><\/tr>
Exterior Window Perimeters<\/td>Best choice<\/td>Acceptable<\/td>Silicone<\/td><\/tr>
Bathroom & Kitchen Joints<\/td>Excellent<\/td>Less common<\/td>Silicone<\/td><\/tr>
Resistance to Fungal Growth<\/td>Sanitary grades available<\/td>Limited<\/td>Silicone<\/td><\/tr>
Maintenance Frequency<\/td>Lower<\/td>Higher<\/td>Silicone<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

The fact that two sealants can perform the same function<\/em> does not mean they deliver the same performance<\/em>. Their underlying chemistry influences how they react to sunlight, moisture, temperature changes, movement, chemicals, and aging over time. Those differences determine where each sealant excels\u2014and where it can fail.<\/p>\n\n\n\n

The bathroom \u2014 why silicone wins, every time<\/h2>\n\n\n\n
\"bathroom<\/figure>
\n

Let’s start with the application most homeowners care about, because this is where the wrong product gets used most frequently.<\/p>\n<\/div><\/div>\n\n\n\n

Walk into any hardware store in Delhi or Pune and ask for “bathroom sealant.” There’s a reasonable chance the person behind the counter will hand you either a standard silicone cartridge or a PU-based product without asking a single question about your specific application. Both are white. Both come in 300ml cartridges. Both say “waterproof” on the label.<\/p>\n\n\n\n

Here’s why only one of them belongs in your bathroom.<\/p>\n\n\n\n

A bathroom is a permanently wet zone. Steam, standing water, direct water contact from showers \u2014 all of it, every day. PU sealant, despite being marketed as waterproof, is an organic compound.<\/p>\n\n\n\n

In a continuously wet environment, especially one with fluctuating temperatures and poor ventilation, PU degrades. It absorbs moisture over time, swells, loses elasticity, and eventually fails its bond to the tile or tray surface.<\/p>\n\n\n\n

Most PU sealants in wet zones show visible deterioration within 18 months to 3 years.<\/p>\n\n\n\n

Silicone, being inorganic, is genuinely hydrophobic \u2014 it repels water at a molecular level, not just at the surface. It doesn’t swell, doesn’t absorb moisture, and doesn’t lose flexibility in a humid environment. High-quality sanitary-grade silicone in a correctly applied bathroom joint will last 5\u201310 years in Indian conditions.<\/p>\n\n\n\n

<\/i><\/span>

Critical distinction<\/strong><\/h4><\/span><\/div>
\n

Not all silicone is sanitary grade. A structural or general-purpose silicone applied in a bathroom provides waterproofing but no fungicide. In India’s monsoon humidity, mould will colonise the surface within months. The correct specification for any bathroom wet zone \u2014 shower, bathtub, shower tray, basin \u2014 is always sanitary-grade anti-fungal silicone<\/a><\/strong>, neutral-cure formulation.X<\/p>\n<\/div><\/div>\n\n\n\n

Where PU does have a limited bathroom role<\/h3>\n\n\n\n

There is one specific bathroom application where PU sealant is appropriate: filling larger structural cracks in concrete walls or floors before waterproofing \u2014 not as the finished seal in a wet zone, but as a filler or backing material for cracks wider than 10mm where flexibility and adhesion to concrete is required. After the PU fill has cured, the joint is then finished with silicone for the permanent wet-zone seal. This is complementary use, not substitution.<\/p>\n\n\n\n

The fa\u00e7ade \u2014 where both products have a legitimate role<\/h2>\n\n\n\n

This is where the specification conversation gets more interesting, and where the most expensive mistakes happen in commercial construction in India.<\/p>\n\n\n\n

A modern building fa\u00e7ade has multiple joint types \u2014 and they don’t all need the same sealant. The error most contractors and project managers make is specifying one product across the entire fa\u00e7ade because it’s simpler. It isn’t simpler. It’s just cheaper upfront and significantly more expensive over five years.<\/p>\n\n\n\n

Weather sealing joints on glass and ACP fa\u00e7ades: silicone<\/h3>\n\n\n\n

The joints between ACP (Aluminium Composite Panel) cladding panels, between glass units, and between glass and aluminium framing are exposed to direct UV radiation, thermal expansion and contraction, wind pressure, and rain \u2014 every day, year-round.<\/p>\n\n\n\n

The sealant in these joints must accommodate significant movement (ACP panels can expand and contract by 3\u20135mm over a day’s temperature swing in Indian summer conditions) and must resist UV degradation for the life of the building.<\/p>\n\n\n\n

This is silicone’s territory, definitively. A neutral-cure silicone<\/strong> \u2014 medium modulus for most fa\u00e7ade applications \u2014 maintains its elasticity and UV resistance for 15\u201320 years. The same joint sealed with standard PU will begin yellowing within 2\u20133 years and become brittle and crack-prone within 5.<\/p>\n\n\n\n

On a commercial building, that means remedial re-sealing of the entire fa\u00e7ade \u2014 a cost that dwarfs the saving made by specifying cheaper PU in the first place.<\/p>\n\n\n\n

Expansion joints in concrete and masonry: PU often wins here<\/h3>\n\n\n\n

Expansion joints in concrete structures \u2014 floor slabs, parapet walls, precast elements \u2014 are a different matter. Here, the substrate is porous concrete or masonry, the joint movement is lower-amplitude and more predictable, and paintability may be required (PU can be painted; silicone cannot).<\/p>\n\n\n\n

PU sealant bonds to concrete without primer in most cases, making application faster and more reliable on rough, porous surfaces.<\/p>\n\n\n\n

A high-quality one-component PU sealant from brands like Sikaflex, DOWSIL, or Asian Paints SmartCare Hybrid PU is a legitimate, professional-grade specification for concrete expansion joints, window-to-masonry perimeter joints, and precast element sealing \u2014 where the surface is porous, the movement is moderate, and UV exposure is not the primary stress factor.<\/p>\n\n\n\n

Use Silicone Sealant<\/strong><\/p>\n\n\n\n

\n
\n
<\/i><\/span>

Glass-to-aluminium joints<\/strong><\/p><\/span><\/div>

\n

High UV exposure, continuous movement. Silicone’s \u00b150% movement capability and UV stability make it the only correct choice.<\/p>\n<\/div><\/div>\n<\/div>\n\n\n\n

\n
<\/i><\/span>

ACP cladding panel joints<\/strong><\/strong><\/p><\/span><\/div>

\n

Thermal expansion in Indian climate is severe. Only neutral-cure silicone provides the movement capacity and UV resistance required.<\/p>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n

\n
\n
<\/i><\/span>

Curtain wall weathersealing<\/strong><\/strong><\/p><\/span><\/div>

\n

Wind loads, pressure differentials, and thermal cycling demand silicone’s combination of elasticity, UV resistance, and long-term durability.<\/p>\n<\/div><\/div>\n<\/div>\n\n\n\n

\n
<\/i><\/span>

Stone & Granite Cladding<\/strong><\/strong><\/p><\/span><\/div>

\n

Special neutral-cure silicone is used around natural stone to avoid staining while providing weatherproof and flexible joints.<\/p>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n

Use Polyurethane<\/strong> (PU) Sealant<\/strong><\/p>\n\n\n\n

\n
\n
<\/i><\/span>

Concrete expansion joints<\/strong><\/p><\/span><\/div>

\n

PU bonds to porous concrete without primer and handles moderate movement well. Paintability often required.<\/p>\n<\/div><\/div>\n<\/div>\n\n\n\n

\n
<\/i><\/span>

Precast concrete joints<\/strong><\/p><\/span><\/div>

\n

Dense, porous substrate with lower movement amplitude. PU’s abrasion resistance and strong adhesion to concrete are decisive advantages here.
<\/p>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n

\n
\n
<\/i><\/span>

Window-to-masonry perimeter<\/strong><\/strong><\/p><\/span><\/div>

\n

Where the substrate is brick or plaster and the joint will be painted over, PU’s superior adhesion to masonry is an advantage.<\/p>\n<\/div><\/div>\n<\/div>\n\n\n\n

\n
<\/i><\/span>

Brick expansion joints<\/strong><\/p><\/span><\/div>

\n

Ideal for movement joints in brick fa\u00e7ades because it bonds well to masonry and can be painted to blend with surrounding walls.<\/p>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n

Structural glazing \u2014 silicone only, no exceptions<\/h2>\n\n\n\n

If you take one thing away from this entire article, make it this: polyurethane sealant is never a specification for structural glazing applications.<\/strong> Ever. Under any circumstances.<\/p>\n\n\n\n

Structural glazing is the system where glass panels are bonded directly to an aluminium frame using silicone adhesive \u2014 there are no mechanical fixings at the glass edges.<\/p>\n\n\n\n

The silicone is the only thing holding the glass to the building. Wind loads, impact loads, and dead weight all transfer through the sealant bond.<\/p>\n\n\n\n

This is life-safety engineering. The Indian glass fa\u00e7ade market saw significant scrutiny after several high-profile panel failures in commercial buildings \u2014 and in nearly every forensic analysis, the root causes included wrong sealant specification, incorrect joint dimensions, or inadequate substrate preparation.<\/p>\n\n\n\n

Structural silicone \u2014 specifically two-component, high-modulus structural glazing silicones from brands like DOWSIL (795, 993, 983), Sikasil SG-500, or Wacker SilFlex<\/strong> \u2014 is the only category of sealant engineered, tested, and certified for this application.<\/p>\n\n\n\n

These products meet ASTM C1184, ETAG 002, and ISO standards for structural sealant glazing. They are tested for tensile strength, elongation, tear resistance, and long-term durability under cyclic loading.<\/p>\n\n\n

\n\n
    \n
  • A PU sealant in a structural glazing application<\/strong> will degrade under UV exposure over time, losing tensile strength and elasticity. What starts as an adhesive bond progressively weakens. The outcome in a worst-case scenario is panel detachment \u2014 a glass panel falling from height.<\/li>\n\n\n\n
  • General-purpose silicone is also wrong here.<\/strong> Not all silicone is structural silicone. A standard acetoxy-cure bathroom silicone has neither the modulus nor the long-term adhesion properties required for structural glazing. Only products specifically designed and tested for SSG applications should be used.<\/li>\n\n\n\n
  • Structural silicone joints must be designed by engineers,<\/strong> not estimated on site. The joint bite (depth of sealant contact with glass and frame) is a calculated dimension based on panel size, wind load, and material properties \u2014 not a “looks about right” call.<\/li>\n<\/ul>\n\n<\/div>\n\n\n

    The honest comparison \u2014 head to head<\/h2>\n\n\n\n
    \n\n \n
    \n
    Technical Reference<\/div>\n
    Silicone vs PU sealant \u2014 full specification comparison<\/div>\n
    Based on construction-grade products in Indian climate conditions<\/div>\n <\/div>\n\n \n
    \n
    \n
    <\/div>\n Advantage<\/span>\n <\/div>\n
    \n
    <\/div>\n Moderate \/ conditional<\/span>\n <\/div>\n
    \n
    <\/div>\n Limitation<\/span>\n <\/div>\n <\/div>\n\n \n
    \n
    Property<\/div>\n
    \n
    Silicone<\/div>\n
    Inorganic polymer<\/div>\n <\/div>\n
    \n
    PU Sealant<\/div>\n
    Organic polymer<\/div>\n <\/div>\n <\/div>\n\n \n
    \n
    \n
    UV Resistance<\/div>\n <\/div>\n
    \n
    \n
    <\/div>\n Excellent<\/span>\n <\/div>\n
    Stable for 20+ years. No yellowing, no embrittlement under direct sun.<\/div>\n <\/div>\n
    \n
    \n
    <\/div>\n Moderate<\/span>\n <\/div>\n
    Yellows and embrittles over time. Requires UV stabilisers for exterior use.<\/div>\n <\/div>\n <\/div>\n\n \n
    \n
    \n
    Movement Capability<\/div>\n <\/div>\n
    \n
    \n
    <\/div>\n \u00b150%<\/span>\n <\/div>\n
    Ideal for high-movement joints \u2014 fa\u00e7ade, curtain wall, structural glazing.<\/div>\n <\/div>\n
    \n
    \n
    <\/div>\n \u00b125\u201335%<\/span>\n <\/div>\n
    Adequate for moderate movement. Will tear under high-amplitude cyclic stress.<\/div>\n <\/div>\n <\/div>\n\n \n
    \n
    \n
    Water Resistance<\/div>\n <\/div>\n
    \n
    \n
    <\/div>\n Excellent<\/span>\n <\/div>\n
    Inorganic and fully hydrophobic. Repels water at molecular level permanently.<\/div>\n <\/div>\n
    \n
    \n
    <\/div>\n Good<\/span>\n <\/div>\n
    Water resistant but organic structure can absorb moisture in continuous wet zones.<\/div>\n <\/div>\n <\/div>\n\n \n
    \n
    \n
    Adhesion to Glass \/ Aluminium<\/div>\n <\/div>\n
    \n
    \n
    <\/div>\n Excellent<\/span>\n <\/div>\n
    Primary substrate. Bonds reliably to glass, aluminium, uPVC, and ceramic.<\/div>\n <\/div>\n
    \n
    \n
    <\/div>\n Poor<\/span>\n <\/div>\n
    Not recommended for glass or non-porous smooth substrates. Adhesion unreliable.<\/div>\n <\/div>\n <\/div>\n\n \n
    \n
    \n
    Adhesion to Concrete \/ Masonry<\/div>\n <\/div>\n
    \n
    \n
    <\/div>\n Requires Primer<\/span>\n <\/div>\n
    Bonds well to most masonry with primer. Without primer, adhesion is unreliable.<\/div>\n <\/div>\n
    \n
    \n
    <\/div>\n Excellent<\/span>\n <\/div>\n
    Bonds directly to concrete, brick, and masonry without primer in most conditions.<\/div>\n <\/div>\n <\/div>\n\n \n
    \n
    \n
    Paintability<\/div>\n <\/div>\n
    \n
    \n
    <\/div>\n Cannot be painted<\/span>\n <\/div>\n
    Paint does not adhere to cured silicone. Colour must be selected at application.<\/div>\n <\/div>\n
    \n
    \n
    <\/div>\n Yes \u2014 paintable<\/span>\n <\/div>\n
    Can be painted once fully cured. Advantage for joints in painted walls or ceilings.<\/div>\n <\/div>\n <\/div>\n\n \n
    \n
    \n
    Temperature Resistance<\/div>\n <\/div>\n
    \n
    \n
    <\/div>\n \u221250\u00b0C to +200\u00b0C<\/span>\n <\/div>\n
    Stable across extreme ranges. Critical for ACP panels in Indian summer (surface temps 70\u201380\u00b0C).<\/div>\n <\/div>\n
    \n
    \n
    <\/div>\n Limited above 100\u00b0C<\/span>\n <\/div>\n
    Degrades under sustained high heat. Not suitable for sun-facing facades in North India.<\/div>\n <\/div>\n <\/div>\n\n \n
    \n
    \n
    Expected Lifespan (Fa\u00e7ade)<\/div>\n <\/div>\n
    \n
    \n
    <\/div>\n 15\u201320 years<\/span>\n <\/div>\n
    With correct specification and application. Among the most durable sealants available.<\/div>\n <\/div>\n
    \n
    \n
    <\/div>\n 5\u201310 years<\/span>\n <\/div>\n
    With UV stabilisers and correct application. Shorter in high-UV, high-heat environments.<\/div>\n <\/div>\n <\/div>\n\n \n
    \n
    \n
    Bathroom \/ Wet Zones<\/div>\n <\/div>\n
    \n
    \n
    <\/div>\n Correct \u2014 sanitary grade<\/span>\n <\/div>\n
    Sanitary-grade anti-fungal silicone is the only correct specification for wet zones.<\/div>\n <\/div>\n
    \n
    \n
    <\/div>\n Not recommended<\/span>\n <\/div>\n
    Absorbs moisture in continuous wet zones. Fails within 18 months in showers or bathtubs.<\/div>\n <\/div>\n <\/div>\n\n \n
    \n
    \n
    Structural Glazing<\/div>\n <\/div>\n
    \n
    \n
    <\/div>\n Yes \u2014 structural grade only<\/span>\n <\/div>\n
    Two-component, rated structural silicone only. ASTM C1184 compliance required.<\/div>\n <\/div>\n
    \n
    \n
    <\/div>\n Never \u2014 not approved<\/span>\n <\/div>\n
    Not an approved material for structural glazing under any standard. Life-safety risk.<\/div>\n <\/div>\n <\/div>\n\n \n
    \n
    \n
    Ease of Application<\/div>\n <\/div>\n
    \n
    \n
    <\/div>\n Requires skill<\/span>\n <\/div>\n
    Skins quickly. Tooling window is short. Professional application strongly recommended.<\/div>\n <\/div>\n
    \n
    \n
    <\/div>\n More workable<\/span>\n <\/div>\n
    Longer open time, easier to tool. More forgiving for less experienced applicators.<\/div>\n <\/div>\n <\/div>\n\n \n
    \n
    \n
    Approximate Cost<\/div>\n <\/div>\n
    \n
    \n
    <\/div>\n \u20b9250\u2013\u20b9800 per cartridge<\/span>\n <\/div>\n
    Grade-dependent. Structural and sanitary grades at the higher end of the range.<\/div>\n <\/div>\n
    \n
    \n
    <\/div>\n \u20b9150\u2013\u20b9400 per cartridge<\/span>\n <\/div>\n
    Lower upfront cost. The savings disappear quickly if specified incorrectly.<\/div>\n <\/div>\n <\/div>\n\n \n
    \n
    \n Performance data based on construction-grade products applied under Indian climate conditions. Actual lifespan varies with surface preparation quality, joint geometry, and application technique. All structural glazing applications require engineered joint design and rated structural silicone \u2014 not general-purpose sealant of any type.\n <\/div>\n <\/div>\n\n<\/div>\n\n\n\n

    Not sure which one you need? Use this<\/h2>\n\n\n\n

    Answer three quick questions about your application and get an instant recommendation.<\/p>\n\n\n\n