ASA Builders Supply was founded by Asa Shapiro in 1952. We have been serving Southeast Michigan for 66 years with a reputation as the largest single trim and door shop in the Metro Detroit area. Our "Trademark of Quality" is synonymous with our long and rich history in the Metro Detroit area for our selection of: Interior Prehung Doors, Bifolds, Mouldings, Closet Shelving, Custom Millworks, and Stair Parts all under a 55,000 square foot warehouse.

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Doors

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ASA Builders Supply has many styles of doors, frames, stair parts, and mouldings to choose from. Our wide variety will help meet any decorating style you need for your home. We have our own mill where we build pre-hung units complete with door, hinges, and frames all pre-assembled for ease of installation.

Mouldings & Trim

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Asa Builders Supply has one of the largest selections of wood mouldings in Southeast Michigan. We also have mouldings in composite materials (MDF) and flexible rubber patterns to match most wood profiles for bending around radius walls and arched openings. We can get special moulding profiles custom made.

Shelves/Mantels

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Have an idea or picture of a fireplace surround or doorway pediment you would like in your house? Give us a call or stop in and we will help you create a masterpiece using the many mouldings we have in stock.

Shiplap

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Shiplap is milled with a divided groove called a rabbet where the edges join securely together, one on top of the other, leaving a characteristic reveal line between boards. This also gives shiplap its distinctive exterior, with delicate parallel reveals amongst each piece. The rough-hewn design of all natural pine paneling is often used in barns and historic farmhouses.

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