The problem on site
High-rise buildings face extreme environmental stresses. On towers across India, project managers and facade contractors frequently encounter premature sealant failure. Joints between aluminium composite panels, glass curtain walls, natural stone cladding, and precast concrete panels begin to crack, pull away from substrates, or tear within just two or three seasons after installation.
When facade joints fail, water penetrates the building envelope during monsoon downpours. This leads to internal seepage, ruined gypsum ceilings, electrical hazards, and corroded structural brackets concealed within the facade cavity. Fixing these defects after handover is exceptionally difficult and expensive. It demands heavy scaffolding, suspended cradles, and specialised rope-access crews working at significant heights, disrupting building occupants and escalating maintenance budgets.
Why it happens
Joint failure on high-rise structures rarely occurs because of poor workmanship alone. The root cause usually traces back to specifying facade sealants purely on unit cost rather than physical performance demands.
A tower facade is dynamic, not static. It moves continuously due to diurnal temperature shifts, seasonal thermal swings, structural frame settlement, and cyclic wind pressures. In northern and central India, surface temperatures on dark facade panels can swing dramatically between midday sun exposure and cold winter nights. As the facade panels expand and contract, the joint width changes constantly.
When a procurement team selects a generic or low-grade sealant, the material lacks sufficient elasticity and elastic recovery. Under tension, the sealant undergoes cohesive failure (splitting down the middle) or adhesive failure (detaching from the panel edge). The risk multiplies when three-sided adhesion occurs because no bond breaker tape or backer rod was installed, preventing the sealant from stretching freely. Furthermore, intense ultraviolet radiation breaks down inferior sealants, making them brittle and unable to follow building movements.
How Space Arc Engineering approaches it
Space Arc Engineering addresses facade sealing as an engineered system rather than a bucket commodity. As an experienced technical distributor and solutions provider, Space Arc Engineering evaluates the joint dynamics before recommending a material specification.
Our technical team reviews panel dimensions, expected thermal movement, wind-load parameters, and the nature of the adjacent building substrates. Different materials expand at different rates; aluminium moves far more than structural concrete or natural stone. Space Arc Engineering ensures that the specified sealant has the certified movement capability to handle these differential expansions without rupturing.
In addition to product selection, Space Arc Engineering assists project teams with correct joint dimensioning rules, substrate preparation advice, and application methodology. By supplying compatible primers, cleaning agents, and non-absorbent backing rods alongside the sealant, we ensure complete envelope integrity from the ground floor to the crown of the tower.
The system we supply
Space Arc Engineering is an authorised project distributor for the high-performance Sika facade sealant range, manufactured by Sika. These professional-grade elastomeric sealants are formulated specifically to protect modern building envelopes from weather extremes and continuous joint displacement.
The Sika facade sealant range, manufactured by Sika, delivers distinct engineering benefits for mid-rise and high-rise developments:
- High movement accommodation: Engineered to endure continuous cyclic extension and compression as panels expand and contract, maintaining an elastic seal without tearing or deforming permanently.
- Weather and UV durability: Resists continuous exposure to sunlight, ozone, elevated temperatures, and driven rain without hardening, chalking, or cracking over service cycles.
- Wide substrate compatibility: Provides strong adhesion to coated metals, anodised aluminium, architectural glass, concrete, masonry, and porous stone cladding systems when used with the appropriate system accessories.
- Non-staining characteristics: Selected formulations prevent the migration of plasticisers and oils into porous natural stone or composite facade claddings, eliminating unsightly streaking and frame discolouration.
To ensure system success, Space Arc Engineering also supplies genuine Sika joint primers and closed-cell polyethylene backer rods, ensuring two-sided adhesion and correct joint geometry across every floor plate.
What to check before you order
To avoid recurring joint failure and costly site corrections, engineering teams should verify several parameters prior to ordering facade sealants:
- Joint dimensions: Measure the minimum and maximum joint widths on site to verify that the planned width-to-depth ratio complies with standard facade engineering practices.
- Substrate properties: Identify every contacting surface (such as powder-coated aluminium, PVDF finishes, bare concrete, or granite) to determine if a specific surface cleaner or primer is mandated by the manufacturer.
- Movement requirements: Confirm the structural engineer’s movement calculations to verify that the sealant’s rated movement accommodation factor matches the building design.
- Backing material: Check that backing rods are sized slightly larger than the joint width to maintain a snug fit, prevent three-sided adhesion, and control sealant depth.
- Site conditions: Ensure joints are clean, dry, free of release oils or construction dust, and within manufacturer-approved application temperature limits before work begins.
Talk to our technical team
Specifying the right facade sealant high rise system protects your building investment and prevents structural damage. Space Arc Engineering acts as your reliable project partner, supplying genuine materials manufactured by Sika with complete technical backing.
Contact our technical support and sales team for product selection, joint analysis, and commercial quotations:
Phone: +91 99991 55255 / +91 72900 89007
Website: www.space-arc.in
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