About Us

Extremegreen Building Products is a manufacturer of Magnesium Oxide Board and Structural Insulated Panels (SIPS).

Extremegreen Building Products manufactures Magnesium Oxide boards, (high density structural magnesium oxide board), Extremegreen SIPS (Structural Insulated Panels), Extremegreen MgO skinned Structural Insulated Panels and other magnesium oxide based building products such as Extremegreen Siding, Extremegreen Backerboard, Extremegreen MgO ceiling tiles and Tyroc MgO Sub-Flooring.

We specialize in the manufacture of super thermally efficient building envelopes using our SIP technology. SIPS have been tried and tested across the United States and Canada for over 40 years. In more recent times, they have gained significant popularity globally, especially in the United Kingdom and Europe.

SIPS have many applications in the construction industry, from affordable energy efficient, environmentally responsible housing to warehousing, hotels, hospitals, schools and mobile worker housing solutions.

What is Extremegreen MgO?

Extremegreen MgO magnesium oxide board is a high density structurally reinforced magnesium oxide based sheathing consisting of a proprietary composition of magnesium oxide (MgO) and magnesium chloride (MgCl2) that is reinforced with multiple layers of glass fiber mesh. The sheets are made in various lengths, widths and thicknesses and are used as external sheathing panels, internal wall lining, tile backer board, flooring, sub-flooring, roofing and for the manufacture of Structural Insulated Panels.

What is a ‘Traditional’ SIP?

A typical SIP is manufactured by laminating 2 pieces of Oriented Strand Board, (OSB) to an expanded polystyrene, (EPS) foam core. The thickness of the EPS is application dependent. The OSB used as the sheathing or ‘skin’, does however have its shortcomings. It is not fireproof as it is made from compressed wood chips, it contains high levels of VOCs, which leads to ‘off-gassing’ and it tends to warp, rot and mold in damp or humid conditions.

What is an Extremegreen SIP?

We took the concept of a SIP and searched for an alternate skin. We utilize Extremegreen MgO, which is an eco-friendly, high density, structurally reinforced, magnesium oxide sheathing. Extremegreen MgO possesses huge advantages when compared to OSB and other wood-based building materials. Extremegreen MgO board is non-combustible, so does not burn. It is water resistant and does not rot, mold or feed mildew. It contains no toxins or chemicals and thus does not off-gas and is 100% people safe. It is also termite proof and completely recyclable.

Extremegreen SIPS are assembled to form walls, roofs and floors of buildings of all types and sizes. Extremegreen SIPS are quick and precise to build with, minimizing both construction time on-site and the need for expensive specialist labor.

Product Development

We are continuously researching, improving and developing new products and product lines. Magnesium Oxide SIPs represent a quantum shift in building technology and thinking.

The company is heavily involved in the research and development of state-of-the-art proprietary ‘hybrid’ SIP designs. We maintain an active research and development program to ensure that we remain at the top of our game and lead the way in green building technology.