Waterproofing Membranes Spectrum Systems is Jamaica’s largest distributor of modified bitumen waterproofing membranes and related products. We stock the largest inventories and widest range of membranes by far, and supply most major projects island wide. widest range of membranes stockedvarious finishes, reinforcements and thicknessesmultiple waterproofing applicationslargest inventories in Jamaicabest value for money, by far! REQUEST A QUOTE Learn More Manufacturer Website Manufacturer Website Technical data Sheet data Sheet Bituminous Water-based primer for Concrete THE NEW SPECTRUM SBS MEMBRANES! B40S SBS 4 mm A40S SBS 180 4 mm 50157 Trend HS Overseas THINK ROOFING • THINK SPECTRUM