Built Up Roof with Gravel | Why Do They Put Gravel on Flat Roofs | Purpose of Gravel on a Flat Roof | Added Benefits of Bur Flat-Roof Gravel Introduction of Built-Up Roof with Gravel BURs (also known as tar and gravel roofs) are a well-known and popular form of flat roof made composed of alternating layers of roofing felt or fibreglass and asphalt that is placed using heat, […]
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