DIA Building is a service-oriented outfit with emphasis on transformational architecture, project management, development, roofing and building systems, as well as renewable energy technologies, including solar, wind, and geothermal systems. We provide services for new structures, renovation and refurbishment of existing facilities, as well as fixtures and fittings installation. Our skilled team understands the critical need to deliver top quality to our clients on time and within budget.



DIA Building, in collaboration with Constro Systems, represents Owens Corning USA in Nigeria. DIA is the designated sole reseller of Owens Corning products in Africa (Guinea, Sierra Leone, Liberia, Ivory Coast, Burkina Faso, Ghana, Togo, Benin, and South Africa excepted). It is affiliated to Bendors Limited Liability Company, which is a USA outfit linked with major North American building materials and systems manufactures such as Owens Corning, GP, Atrium, United, Bratex, etc. As the only fiberglass shingles manufacturer catering to the tropical climate, Owens Corning (OC) shingles have captured the imagination of tropical Africa (including Nigeria, Ghana, Liberia, etc.), America, Asia, Australia, and Eastern Europe. Sitting on a bed of oriented strand boards (OSB) or agglomerated (Agglo) sheets, OC shingles composition provides the coolest and most architecturally aesthetic, algae- combating and bat-proof roof system hitherto unknown in tropical countries such as Nigeria and most of Africa. DIA’s charge in Nigeria and the rest of Africa is to deliver American-standard quality cool roofs for every building efficiently and cost-effectively.

About Us:

DIA Building represents Owens Corning USA in Nigeria. A global Fortune 500 company for over a century, Owens Corning invented glass fiber, and remains the world’s leading producer of home building products from insulating, roofing, acoustical, to basement finishing that deliver maximum energy efficiency, low maintenance, sound control, convenience, beauty and peace of mind with warranties that are among the best in the global industry.

Our Mission

DIA’s mission is to provide outstanding top quality service that is cost-effective and on time for all clients with our skilled, professional team that strives to remain the best in the industry.


DIA Building brings elite American Owens Corning shingles roofing for tropical Africa – from the suite of the only manufacturers of tropical climate-suiting shingles in the world with limited varied lifetime warranties. With superior American oriented strand board (OSB) or plywood base, clients using Owens Corning shingles enjoy natural interior cooling, and architecturally distinctive and sleek exteriors unknown with other roof types. No more worries about metal roof rust, aluminium quality and gauge, or bats and geckos in the roof. No need for after-installation touch-up – save yourself the risk and trouble of climbing to touch up your roofs weeks or months after installation. Stand out, be noticed, with Owens Corning lasting shingles roof! DIA Building African roofs crowned with American technology!

Affiliated Services:

DIA-Ebenezer International is our US-based collaborative consortium outfit for international design, planning, engineering, 3D-5D building information modeling (BIM) and rendering of built facilities of all types and sizes.

In collaboration with premier Michigan universities, Bendors LLC is working to develop Dr. Ilozor's invented unique concept, Bendors Air Power System for renewable generation, storage, and supply of stand-alone electrical energy without the use of batteries or involvement of combustion. Through the manufacturers to which Bendors LLC is linked, we also help procure for Nigerian and African clients top-quality American ready-to-install aluminium-framed and vinyl, double-glazed insulating windows with fly screens; pre-hung doors (quality solid entry and hollow-core or solid interior panel and flush doors in steel and vinyl with hardware); bullet-proof windows and doors; garage doors; PVC and fiberglass window and door trims, cornices and decorations; automated, manual and fixed skylights; rainwater gutter and downpipe systems; and plug-and-play solar photovoltaic systems for complete individualized electricity supply unconnected to grid electricity service.