Stone Coated Aluminium Roofing Sheets

Natural Stone Granule Armor
The defining aesthetic and primary protective layer of these tiles consists of meticulously selected natural stone granules, predominantly basalt or granite. These granules are not merely decorative gravel; they are carefully graded, washed, and ceramic-coated natural minerals chosen for their hardness, angularity, color consistency, and UV stability. The ceramic coating applied to the granules before bonding serves two vital functions: it permanently locks in the vibrant, fade-resistant color, and it enhances the granule's durability and adhesion properties. The angularity of the granules is crucial – it creates a tightly interlocking surface when embedded in the acrylic resin, forming a dense, armor-like layer. This density is key to impact resistance and long-term granule retention. Granule size distribution is also precisely controlled; a mix of sizes ensures optimal coverage and minimizes gaps where the underlying resin could be exposed to UV degradation.

This natural stone granule armor is the workhorse of the roofing system. Its primary role is as a sacrificial, multi-functional shield. The extreme hardness of the basalt or granite (significantly harder than hail or wind-blown debris) dissipates the energy of impacts, protecting the underlying metal from dents and punctures. The dense, opaque layer provides unparalleled UV protection, blocking virtually all harmful radiation from degrading the underlying color coat, resin, and metal substrate – this is the core reason for the tile's exceptional fade resistance over decades. The rough, textured surface significantly reduces glare compared to smooth metal roofs. Furthermore, the granules create a highly effective thermal barrier. Their mass and the air pockets within the granular layer absorb and dissipate solar heat, significantly reducing heat transfer into the attic space compared to dark, smooth surfaces. This natural "cool roof" effect contributes to energy savings. The granules also provide excellent sound dampening, reducing rain noise to a gentle patter compared to the drumming sound on bare metal. Crucially, the natural, mineral composition makes this layer completely inert – it doesn't support mold, mildew, or algae growth, and it's highly fire resistant, contributing to the overall Class A fire rating of the roof assembly.