About Us

From the desk of Mark A. Sirvin:

 Accurate Custom Sash was founded in 1981 as a specialty window, door and mill work company.
We are a family run business that prides itself on giving each and every potential client the time and expertise necessary for them to make the most educated decision when it comes to their window and door needs. We have over 35 years of experience within the window and door industry, along with a custom mill shop, offering unlimited manufacturing capabilities. Our mission statement is to give each client the highest level of customer service, and never subject you to any pressure sales tactics. I encourage you to give myself or my wife Pat a call at (708) 423-0423 and allow our expertise to guide you regarding your window and door needs. If we can't help you, we will do our best to lead you to someone that can!


Here are just a few things you will discover on a 5 minute phone call with us:

  • See how you can save $$$ by having your wood or aluminum clad window sash repaired versus replaced.
  • Looking for duplication of a current wood window, door or molding - Look no further!! We also custom modify sash profiles to improve their performance
  • Discover how to add years to the life of your wood windows and doors.
  • Save the character of your home and keep the beauty of your current wood windows intact. Minor repair is all that may be needed.
  • Locate obsolete window hardware such as window frame parts, operators, hinges, locks, glass bead, etc.

Is your brand of window or manufacturer no longer in business? Have you been told - "We have to tear out and replace the entire window, the company is no longer in business and we cannot repair this window or get a replacement sash?"

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Here are some of the manufacturers that we can repair, sometimes duplicate, and in certain cases order you replacement sashes when repair is not an option:

   Barber & Ross/ Rockwell, Biltbest, R.O.W, Norco, Caradco, Pozzi, Vetter, Crestline, Malta, Lincoln, Marvin, Sealrite, Andersen, Wenco, Hurd, Windsor, Semco, plus many more.

We can duplicate any all wood window sash or sash part from a sample you ship to us, walk in with, or drop off at our shop.
Can't provide us with a sample?
In many cases, we just might have the original manufactures sample sash in our vast inventory!!
In those cases where repair is not a viable cost effective option, Accurate Custom Sash offers full window and door replacement options. We rep and handle several top quality product lines as shown below. They have been recognized leaders in the industry for years, for top quality and innovation.
                                                     Image result for masonite doors logo   
                     Image result for lincoln windows     Image result for marvin windows logo                                                                                         

Discover the Accurate Custom Sash difference, where our 35 plus years of industry knowledge, customer service, and quality of our materials sets us apart from all other wood window repair companies:

Do we repair or duplicate your windows with inferior lumber having knots? - NEVER!  - your windows are a fine piece of furniture, and should be treated as such. Do we use finger jointed or glued up lumber for windows? - NEVER! - we only use solid 1 piece material, regardless of the wood species. Do we use any interior grade lumber, like Poplar, which has absolutely no rot resistant warranty, to build or repair your windows? - NEVER! - we offer you Accoya, solid wood with a 50 year rot proof warranty, unmatched in the industry. Since our start back in 1981, we have worked extremely hard to become the company of choice in the wood window sash repair business. We use a quote by "Benjamin Franklin" as our quality mantra each and every day:

"The bitterness of poor quality remains long after the sweetness of low price is forgotten"

View our Facebook page and explore our website to view some of our work.

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            We Thank You for visiting our website.

                             Mark & Pat Sirvin