Is your home suffering from outdated windows? Time to update and modernize!


Windows built from 1800-1970 most likely were built of fir or cedarwood and are known and revered for their high quality and durability. DO NOT replace them.  The dense material is invaluable for fighting dry rot. When replacing windows, you will be often be sold with lesser quality, softwood, replacement window that does not match your house.

Original windows will add aesthetic & monetary value to your home.

Apart from being long-lasting, wood windows can add aesthetic & monetary value to your home. It is not easy to find high-quality wood windows, especially hardwood windows, being produced today – and if so, they are quite expensive.  This means that your home will hold more value with the original windows. Instead of replacing them, your existing wood windows can be brought back into great shape and made more functional and more energy-efficient, which rivals newly produced windows, while holding more value and beauty by repairing them.

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Are you a homeowner living in a vintage house or apartment?

If so, are you tired of your non-functioning, uninsulated, drafty windows? It’s time to Update!

Owning an old home can sometimes be challenging.  While you love the charm of your vintage home, it can be costly and time-consuming to manage.

Some of the challenges of owning an old home can include:

  • Loss of heat and air-conditioning through leaky windows
  • Water damage and leaks around window frames
  • Difficulty installing and operating bulky storm windows
  • Single pane windows are ineffective at reducing outside sound
  • Expensive to maintain vintage windows
  • Replacing windows can affect original charm and value.

Did you know that the average home can lose up to 30% of its heat or air conditioning energy through the windows? SLIPs are designed to maintain the beauty of your original windows while protecting you from the elements and increasing the insulation of your home. In terms of insulation power, SLIPs are similar to insulated glass conversions. Another key aspect is that SLIPs will ensure your window sash remains fully operable, without any need to open two sets of windows as you get with many types of traditional storm windows.


Hidden Balance in the Sash for Doublehung Windows


This is a HUGE problem for vintage window owners. When installing SLIPs on your windows we remedy this problem in the process. It’s time to get those windows operating! When going with the SLIP, we can get the windows functional again. Your windows will be updated and outfitted with operative hardware that new windows use. As a result, you’ll gain seamless functionality from your unit. In addition, weatherstripping included will prevent unwanted air leaks and drafts.

Get SLIPs installed on Your Windows


You have the option to buy the SLIP™ KIT and install it yourself. We recommend self-installation only to individuals with the know-how and confidence to perform a successful installation. We provide you with SLIPs, hidden balances, jigs, weatherstripping, hardware, and more in the kit.  You must have your own tools, including a plunge router, hand router, and planer.

We ship you a crate with all the components needed inside.

We have created a detailed installation video to help walk you through the successful installation process. We highly encourage that individuals with the necessary skill set take on a self-installation project.

NOTE: Many structures dated before 1978 include lead-based paint.

To learn more about DIY SLIP™ projects, 
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Ask your Local Contractor

A trusted local handyman or carpentry contractor could effectively do installation. We have a full length installation tutorial video. We can also quote and supply all the needed materials through this website. Information on how they can order and install for you can be found here.
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