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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.
Services
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.
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.
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 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.
Reviews (9)
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Matthew Schultz
Apr 16, 2022
Fantastic customer service and VERY knowledgeable. Prices are fair and in a time of tough shipping due to COVID they've yet to disappoint with a quick turnaround around every time. Thanks Matt the sales associate, Fantastic as always.
Bill Swanson
Jul 19, 2021
Bought a few kitchens from them. Now I need replacement parts and they refuse to return calls Jerry soulsby is useless
Alex Sadovskiy
Jun 22, 2021
I have purchased a couple of times from ASA in the past with no problems. The purchase and delivery of the trim for my house was smooth. Called, placed the order, and had it delivered into my garage a few days later. Where I had an issue and thought it would be useful to share a warning was the quality of the trim I bought. This is 1x6 and 1x4 rectangular trim, which came primed. Gouges, scratch marks, cracked primer, overapplied and drooping primer, or a combination of those are on every single piece. Looks to me the primer was thrown on half-effort resulting in uneven and splotchy primer, the pieces were then not given enough time to cure, resulting in cracked primer, and were then thrown, resulting in gouges, scratches, and cracks.

I purchased the same pieces about 2 years ago, and they were near perfect. I understand there is some variability and imperfections in primed finger-joint trim, but having to scrape and rework every piece is unacceptable. This was not a small purchase either (about 20 pieces). Word of caution for everyone.
Blake Campbell
May 27, 2021
Make you wear a mask despite being behind plexiglass wall and no other patrons around even after restrictions were lifted, will take my business to other companies.
Adam Wilson
Jan 20, 2021
Worked with ASA on two projects, first was a bathroom vanity. We worked with Leigh, she was fantastic with great recommendations, communication and guidance on budget and quality. They also helped us with some custom closet doors, not an easy job from an application standpoint. The salesperson we worked with, Jim was also fantastic, he was patient and assisted every step of the way on the job. Final product came out beautifully. Highly recommended.
Rabbi Jason Miller
Nov 29, 2019
The Shapiro family at ASA Builders Supply and ASA Cabinets are so easy to work with. They know the industry better than anyone and I simply won't trust any other company for cabinets or doors. They have a great selection and offer the best advice around. It's no wonder that this company continues to win award after award throughout the generations since Asa Shapiro founded it many decades ago.
Jeff Rounds
Jun 06, 2018
Been going to this place a lot of years. Best prices for trim and doors, period. They can be a little dicky at times, but it's construction so don;t be a punk yeah? These guys know the products, have a great product line and system for getting you out of there in a reasonable time. I think I refer ASA more than any other construction supplier.
Mark Marion
Nov 06, 2016
Outrageously overpriced, rude, deceptive outfit. Worst experience ever. The owner claimed my cabinet costs alone for a simple 12 foot galley (15 cabinets total) would cost "at least" $15,000. When I said my budget for cabinets was around 9grand, he ended the meeting and said I couldn't afford him and then showed me some crappy builder grade OSB stapled garbage line he said would be about 9grand. but he never even got back with me on a quote as he promised.

I later priced the same shcrock lincabinet line he said would "be over 15 grand" from menards- full plywood and they were eight grand. and I ended up going with an upper line Kraftmaid cherry cabinets/plywood for Seven Grand through lowes. ASA have an absurd outrageous markups on their cabinets. They are rude and apparently only deal with Rich people that blindly throw 20,30+ grand at kitchens and don't care about costs. The experience was all around the worst I have ever had.
Celia Block
Jan 21, 2014
I love ASA Builders Supply! Great selection and great prices! I'm a decorative painter. Sometimes I place orders for moldings for my client's homes. Mostly, I buy moldings to make picture frames. I am always treated like I am their best customer no matter what I buy.