Siltank Overhead Water Tanks & Loft Tanks

Which Water Tank is Best for a Home Rooftop?

The right overhead water tank for a rooftop installation depends on three things: the capacity required, the climate where the building is located, and how long the stored water needs to remain safe and temperature-stable. Supreme Siltank answers all three. Manufactured using 100% virgin raw material and rotationally moulded for maximum strength, Siltank plastic water tanks are available from 100 to 10,000 litres in two, three, and four-layered designs. Every tank is BIS certified as per IS 12701, full capacity is guaranteed unlike commercial tanks where stated and actual capacity differ, and all tanks meet and exceed BIS quality parameters. For homeowners, builders, and housing societies looking for dependable water storage tanks that perform from day one, Siltank is the verified starting point.

What is the Difference Between a 2 Layer, 3 Layer, and 4 Layer Siltank?

The number of layers in a Siltank determines its structural composition and thermal performance. The two-layer tank provides standard strength and is available in black, which naturally blocks sunlight entry and prevents algae formation. The three-layer tank adds a structural middle layer for greater rigidity and is available in white, yellow, blue, brown, and green. The four-layer water tanks for home adds a foam insulation layer as the third layer, specifically designed to maintain water temperature. Lab-tested and brochure-verified, the foam layer keeps water cool in summer and prevents it from getting too cold in winter. The innermost layer across all variants is food grade plastic, safe for drinking water storage. Choosing between layers is a choice between standard performance and enhanced thermal management.

How Do I Choose the Right Siltank Capacity for My Family?

Siltank plastic water storage tanks are available from 100 litres to 10,000 litres, covering individual homes, apartments, commercial buildings, and large institutional projects. For a family of four, a 1000-litre overhead tank is a commonly used starting point. Loft tanks are available separately from 100 to 1000 litres for compact, space-saving installations inside the home rather than on the rooftop. The loft water tank format is rectangular and designed to fit within the limited ceiling cavity space of kitchens and utility areas, while the overhead range covers the full capacity spectrum for terrace installation. For housing societies and commercial buildings requiring larger reserves, Siltank's range extends to 10,000 litres in a single tank.

What Makes Siltank Water Tanks Stronger Than Other Plastic Tanks?

Siltank's structural advantage comes from two design decisions: rotational moulding and a unique rib structured design. Rotational moulding produces a uniform wall thickness throughout the tank, eliminating the stress concentration points that cause weaker tanks to bulge or crack under load. The rib structure distributes load across the tank body, giving Siltank a very good impact strength that makes it virtually unbreakable under normal installation and operating conditions. The 4 layer water tanks variant adds a foam core for thermal insulation without compromising structural integrity. All tanks are UV stabilized, preventing degradation, cracking, and colour fading due to ultraviolet exposure on rooftop installations. Injection moulded covers with a threaded design provide a secure, contamination-resistant closure that is far stronger than standard snap-fit covers used by competing tanks.

What Are Siltank Water Tank Lids and Bases Made Of?

Plastic water tank lids on Siltank tanks are injection moulded with a simple threaded design that ensures secure closure without tools. The threaded mechanism prevents the entry of sunlight, dust, insects, and external contaminants, keeping stored water clean between draws. UV resistance covers block sunlight and prevent algae growth inside the tank. For customers requiring replacement or additional covers, water tank lids plastic options are available separately. The water tank base for Siltank is designed with provision of hooks for lifting the tank to higher floors, making rooftop installation manageable without heavy lifting equipment. For installations requiring a stable platform, particularly for the WeatherShield variant, a readymade base plate option is available.

Why Choose Supreme Siltank for Water Storage?

Supreme Siltank overhead water tanks are backed by over eight decades of manufacturing experience, BIS certification to IS 12701, and a full capacity guarantee that most competing brands do not offer. Every tank is manufactured from 100% virgin raw material, free from any odour or taste, and the food grade inner layer ensures stored water remains safe for drinking over long periods. The range spans 3 layer water tanks and 4 layer water tanks across multiple colours and capacities, with loft variants for compact installations. For homeowners, contractors, and project specifiers looking for water tanks for home that combine structural strength, thermal performance, drinking water safety, and long-term reliability, Siltank remains the most trusted name in overhead water storage in India.