Construction Chemicals: From Add-On to Essential — Why Modern Buildings Can’t Do Without Them
by Vijay Lahoti, Chief Business Officer, BirlaNu
Climate change is altering what buildings must withstand over their lifetime, with structures now expected to handle heavier rainfall and longer spells of extreme heat. Construction chemicals are playing a larger role in addressing both challenges — protecting structures from moisture while advanced coatings and thermal protection systems reduce heat absorption and cooling costs. As temperatures rise across Indian cities, thermal performance is becoming a key indicator of building quality, improving occupant comfort, lowering operational costs and supporting long-term durability. Coastal buildings face higher moisture loads, while flood-prone infrastructure needs waterproofing suited to more frequent, severe conditions.
India’s construction chemicals market reflects this shift in its numbers. The market was valued at USD 3.69 billion in 2025 and estimated to grow from USD 3.97 billion in 2026 to reach USD 5.68 billion by 2031, at a CAGR of 7.46% during the forecast period (2026-2031). Infrastructure applications account for 62.6 percent of that market, a figure that tells its own story about where the most critical demand is concentrated. When metro tunnels, coastal bridges, and highway structures require chemical solutions to meet the durability and performance parameters written into their engineering specifications, the category is no longer optional by any reasonable definition.
What Construction Chemicals Actually Do
The category spans a wide range of products with distinct functions and understanding that range is important for appreciating why it has become so central to modern construction practice.
Concrete admixtures are the largest segment by volume, holding approximately 49 percent of the Indian market in 2024. These are chemicals introduced into concrete during mixing to modify its properties — improving workability without adding water, accelerating or retarding setting times, enhancing early strength, or reducing permeability. High-range water reducers and superplasticizers are now standard inputs in large infrastructure projects. The Delhi-Mumbai Expressway and Mumbai Metro Line 3, both of which require high-specification concrete with precisely controlled strength and permeability parameters, depend on admixture formulations that were not available to contractors a generation ago.
Waterproofing compounds hold approximately 34 percent of the market and are in many ways the most directly visible category to building owners and occupants. India’s monsoon conditions, combined with the country’s coastal urban density, create a waterproofing challenge that has no passive solution. Structures built without systematic waterproofing at the foundation, podium deck, terrace, and wet area levels degrade faster, require more maintenance, and ultimately cost significantly more over their service life than the chemical protection would have. The IGBC-registered floor area in India expanded by 40 percent year-on-year in 2024, and green-rated buildings require low-VOC, performance-verified waterproofing systems as a condition of certification. The market is responding bio-based polyurethane membranes and recycled-content admixtures are now mainstream in metro office and premium residential construction.
Repair chemicals, sealants, adhesives, flooring systems, and surface treatments complete the picture. Each serves a specific function in the construction of a lifecycle, and each addresses a failure mode that, left unmanaged, shortens the effective life of a structure and increases its long-term maintenance cost.
The Performance Specification Shift
The more fundamental change driving construction chemicals adoption is the shift in how project performance is being specified and evaluated. For much of India’s construction history, projects were assessed at completion against visual and basic structural criteria. Quality was defined by whether a building stood, not by how it would perform over decades of thermal cycling, moisture exposure, and structural loading.
That frame is changing. Large infrastructure developers, institutional buyers, and increasingly the regulatory environment are applying lifecycle costing criteria to procurement decisions. A material or system that costs more upfront but reduces maintenance expenditure over a thirty-year asset life is now the more defensible specification. Construction chemicals, which consistently demonstrate their value through extended structural service life and reduced remediation costs, are direct beneficiaries of this shift in evaluation logic.
The Bureau of Indian Standards specifications, including IS 9103 for concrete admixtures and IS 2645 for waterproofing compounds, establish performance parameters that organized sector projects are increasingly required to meet. When compliance with these standards becomes a condition of project approval, the construction chemicals required to meet them move from discretionary to obligatory.
Climate Pressure Is Accelerating the Timeline
India’s changing climate is compressing the timeline on which this transition needs to happen. Structures built without adequate thermal protection degrade faster under sustained heat stress. Buildings in coastal cities face higher moisture loads as weather patterns intensify. Infrastructure in flood-prone areas requires waterproofing systems designed for conditions that are becoming more frequent and more severe. The construction decisions being made today will have to hold up through climate conditions that will be materially different from those prevailing when the structures were built.
This is already showing up in the maintenance records of buildings constructed in the 1990s and early 2000s without adequate chemical protection, many of which are remediation work within fifteen to twenty years of completion. The cost of that remediation, in most cases, exceeds what proper specification and application of construction chemicals at the time of build would have required.
What the Industry Needs to Do Differently
The data on market growth is encouraging, but it captures organized sector adoption. A significant share of India’s construction output, particularly in residential and semi-urban segments, continues to be built by contractors who are making specification decisions based on upfront material cost rather than lifecycle performance. Awareness of what construction chemicals deliver, communicated through specifiers, architects, and project engineers rather than just at the procurement level, is the gap that limits broader adoption.
The organized construction chemicals industry has a responsibility here. Product performance data relevant to Indian climate conditions, application training for contractors, and credible demonstration of lifecycle cost savings are all investments that build the market on a more durable foundation than marketing alone. India is building at a scale and pace that will not repeat. The structures going up now will define the built environment for decades. Whether construction chemicals are treated as essential inputs or optional extras in those decisions will have consequences that outlast the projects themselves.
