Bauder is one of the United Kingdoms leading flat roofing and green roof system manufacturers, headquartered in Ipswich, Suffolk. The company manufactures and supplies complete flat roofing systems including single-ply, hot melt, cold liquid, bituminous, and green roof solutions through its nationwide network of Bauder Approved Contractors. Bauder provides full technical design, specification support, and project management for commercial, industrial, educational, healthcare, and residential flat roofing projects across the UK and Ireland, with all systems carrying comprehensive manufacturer-backed warranties.
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Flat and Commercial Roofing
Expert Guide: Flat and Commercial Roofing
Flat and Commercial Roofing providers listed on DirJournal have been independently verified through our 5-Point Human Audit — a rigorous editorial process maintained since 2007. This directory serves as a definitive reference for comparing qualified flat and commercial roofing specialists by location, service scope, and verified credentials.
Unlike automated aggregators, every listing below is manually reviewed for professional legitimacy, contact accuracy, and service quality. Our 19-year editorial legacy across 600+ industries ensures you're consulting a trusted, high-authority source.
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Bestway Roofing is a Vancouver-based commercial and residential flat roofing contractor serving Greater Vancouver, Burnaby, Surrey, Richmond, and the Lower Mainland of British Columbia. The company specializes in flat and low-slope roofing systems including SBS modified bitumen, torch-on membranes, TPO, EPDM, and PVC single-ply systems for commercial buildings, multi-family strata properties, and industrial facilities. Bestway Roofing is a Soprema Certified Installer and IKO Shield Pro contractor, providing manufacturer-backed warranties and preventive maintenance programmes for flat roof systems across BC.
Greenwood Industries is one of the fastest-growing commercial roofing contractors in the United States, a privately held firm with nine locations across the Northeastern US employing approximately 750 people with 17 established union contracts. The company nearly doubled in size recently with 96% revenue growth and specializes in flat and low-slope commercial roof construction, roof replacement, maintenance, repair, and weatherproofing for large-scale commercial and industrial projects. Greenwood also provides historic restoration roofing services for landmark buildings across the Northeast.
Kalkreuth Roofing and Sheet Metal is a leading commercial and industrial roofing contractor with locations in Kentucky, Maryland, Ohio, Pennsylvania, and West Virginia. The company specializes in flat and low-slope commercial roofing systems including TPO, EPDM, PVC, modified bitumen, and built-up roofing for healthcare, education, government, retail, transportation, and entertainment facilities. Ranked among the top five US roofing contractors by ENR and seventh among metal roofing contractors by Metal Construction News, Kalkreuth delivers large-scale projects including historic restoration and complex architectural metalwork.
Langley Waterproofing Systems is a specialist UK flat roofing and waterproofing manufacturer headquartered in Tamworth, Staffordshire. The company designs, manufactures, and installs complete flat roofing systems including single-ply, hot melt, cold applied liquid, and bituminous membranes through its nationwide network of Langley Approved Contractors. Langley provides BIM-compatible specifications, NBS source integration, and CPD seminars for architects and specifiers. The company serves commercial offices, hospitals, schools, universities, retail, and residential developments across the UK with systems carrying up to 30-year warranties.
Roofing Solutions is a commercial roofing contractor fully licensed, bonded, and insured in 11 states, serving 75 cities across the Gulf Coast from seven locations in Louisiana, Alabama, and Mississippi. The company specializes in flat and low-slope commercial roofing systems and wall panels of all types for warehouses, retail centers, offices, manufacturing facilities, and government buildings. Being on the Gulf Coast, a significant portion of the business comes from storm damage repair and leak restoration, and the company is known for long-term client relationships and durable roofing products built to withstand hurricane conditions.
Roofix is a commercial flat roofing specialist serving the Greater Toronto Area and Southern Ontario with flat roof installation, replacement, and repair for commercial, industrial, and multi-residential buildings. The company provides TPO, EPDM, PVC, modified bitumen, torch-on, and built-up roofing systems for warehouses, office buildings, condominiums, retail plazas, and industrial facilities. Roofix holds CGSB certification and provides manufacturer-backed warranties from major suppliers including Carlisle, Firestone, and Soprema for all commercial flat roofing installations across Ontario.
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