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SLIP™ FAQS.

    FIND ANSWERS TO FREQUENTLY ASKED QUESTIONS HERE.

    Interior SLIP™ Install

    There are a few items you should be aware of if you wish to install SLIPs on the interior side of the sash.

    Will the installation of SLIPs on the interior face of the sash interfere with any hardware? If hardware is in the way, it can sometimes be moved to a different location to make way while still allowing an aesthetic look. You must make sure there is a 1.5-inch clearance of any hardware or other interference on all sides within the interior daylight size. The face must be a clear and flat surface. Hardware that could interfere may include locks or handles.
    You must make sure the SLIP would have enough room to fit on the interior sash face and not interfere with the interior sash stops. You must make sure there is a 1.5-inch clearance of any hardware or any other interference on all sides within the interior daylight size.
    On a double-hung window, will the top SLIP fit between the bottom sash check rail when flitting flush on the upper sash? This may vary by window. Sometimes you must place the bottom sash check rail to allow for better clearance. SLIPs sit 5/16 inch above the face of the sash.

    The SLIP™ extrusion inside edge should meet and sit on the outside edge of the putty glazing but should not extend over the putty. The SLIP will extend 3/4 inch to the edge of the sash from the outside edge of the putty glazing and sit approximately 1/4 inch above the face of the sash.

    Yes, extensive testing on the product compared to a substitute product was done by the University of Oregon’s Energy Studies on Building Laboratory. The results of that study can be reviewed here.

    SLIPs won’t cause any fogging due to vent holes evenly placed. This allows for an even air pressure between both panes and on the exterior. SLIPs may fog about a week after installation due to the chemicals in the cleaning solution that was used on the glass, but this should subside in about one week. If fogging does not subside, this may be due to an air vent being pinched off, and adjustments to the fastening of the SLIP™ could be necessary.

    SLIPs weigh approximately 1 ¾ lb per square foot.

    Currently, we only make SLIPs to fit on square and rectangular-shaped windows.

    SLIP™ Extrusions are painted with PPG products. The current colors are as follows:

    • Delicate White-PPG1001-1
    • Bronzed Carmel- MTL140
    • Pearl (Yellow-Beige)- PPG1087-2

    You must check to make sure hardware will not be an issue for a successful installation. SLIPs sit approx 1 inch outside the daylight area of a window. If the hardware is not fixed, hardware can be moved to remedy space issues.

    A certified installer will assess possible hardware challenges during an initial evaluation.

    • There are many many benefits to keeping your original wood windows. Your wood windows were most likely handcrafted from cedar or fir. It is not easy to find high-quality wood windows, especially hardwood windows, being produced today and if by chance you do, they are quite expensive. This means that your home will hold more value with the original windows. This dense wood does not succumb to dry rot easily.
    • Wood windows are the most revered windows on the market.
    • Your wood windows were built for your house, and therefore, match the design and aesthetics.

    You can contact customer service through email. Someone will reach out to you soon.

    If your window glass is broken, you will want to get this fixed prior to the SLIP™ installation, or the product will not function as intended.

    On casement windows, we use KERF mounted bulb weatherstripping. On double-hung and single-hung windows, we use a combination of KERF mounted bulb weatherstripping and KERF mounted PVC weatherstripping.

    • Do not use a power washer to clean SLIPs. Power washing SLIPs could force water into the interior window glass through vent holes, causing water staining on interior glass surfaces.
    • The glass is tempered and soft. Use a mild soap and a soft cloth to clean it. Abrasive or rough products of any kind can scratch the glass.
    • Do not caulk or paint heavily around the SLIP. It could block the vent holes and cause fogging. If sweating is an issue, more ventilation is required.
    • Do not remove the blue back from the glazing tape.

    A certified installer, or contractor of your choice, can help you measure your windows to get a quote for SLIPs. Installers or contractors will provide a separate estimate to install the SLIPs at your location. To buy SLIPs directly, fill out the online form with your desired product specifications, then email your completed form to us and we will contact you with a quote.

    SLIPs can be made as large as 20 square feet and as small as 1 square foot. This is the largest/smallest SLIP we ship. For larger SLIPs, you must contact a certified SLIP™ installer.

    SLIPs cannot be installed on slider windows.

    SLIPs are built for long-term use and should last the life of the window.

    Weatherstripping and the hidden balance will have normal wear and tear over time.

    SLIPs do work on doors just as they do on windows. SLIPs do not work on slider doors. Before buying a SLIP for a door, make sure the door hardware will not be in the way of the installation.

    Glass and the SLIP – Do not worry, the condensation will go away after you clean the evaporators. If condensation persists, either one or more of the SLIP fastening screws is too tight, pinching off the air vents. If condensation appears, check the screw, especially near the air vents to make sure they are not too tight. The SLIP needs to rest snug to the sash, but be sure not to overtighten.

    It's very easy to remove a SLIP if you want to clean your original window glass. You simply unscrew the fasteners on the sash and remove. This is easier with a suction cup.

    It is possible to use ropes for operation with SLIPs. You’ll need to adjust the counterbalance weight in the weight pocket. We do not provide instructions or support for using SLIPs with ropes. Consult a certified installer if you wish to do this.

    Many times, windows are painted shut. The certified installer will address this when installing SLIPs.

    SLIPs are coated with a PPG paint. This paint acts as a primer that allows for painting.

    Ten-Year Warranty Slim Line Insulating Panes (SLIPs) are designed to insulate and protect sashes from the weather. SLIPs are manufactured in Oregon City, Oregon, using aluminum frames with a paint finish and tempered safety glass, a gasket around the perimeter of the aluminum extrusion, and stainless-steel screws. Although Chosen Wood Window Maintenance, Inc (CWWM) is not the SLIP installer for DIY Kits, CWWM warrants this product (not the installation) to be free from defects in workmanship and materials, under normal residential use and conditions, for ten (10) years from the original date of purchase. This warranty does not cover glass breakage, wear spots, or scratches. CWWM agrees, at its option during the warranty period, to repair any defect in workmanship or materials or to replace the product without charge (except for a fee for shipping, handling, packing, return postage, and insurance which will be incurred by the customer). Such repair or replacement is subject to verification of the defect or malfunction and proof of purchase as confirmed by showing the fabricated dimensions of the SLIP on the original dated invoice or sales receipt. Installation of the repaired or replaced product is not covered. Tempered safety glass can withstand considerable impact, but it can break, and Low-E coatings can be scratched easily. Do not caulk or paint heavily around the SLIP, as it could block the vent holes and cause fogging. Do not use metal or abrasive materials when cleaning. Use a mild dish soap and soft cloth for cleaning. Rinse or squeegee off as a last step. Use care that the squeegee is free of grit that could scratch the glass or coating. Clean SLIPs thoroughly and often for years of enjoyment.

    We produce SLIPs for larger commercial projects. The arched extrusion is made from a flexible moulding that is profiled after our normal aluminum extrusion. Please contact us.

    Interior SLIP™ Install

    There are a few items you should be aware of if you wish to install SLIPs on the interior side of the sash:

    • Will the installation of SLIPs on the interior face of the sash interfere with any hardware? If hardware is in the way, it can sometimes be moved to a different location to make way while still allowing an aesthetic look. You must make sure there is a 1.5-inch clearance of any hardware or any other interference on all sides within the interior daylight size. The face must be a clear and flat surface. Hardware that could interfere may include locks or handles.
    • You must make sure the SLIP would have enough room to fit on the interior sash face and not interfere with the interior sash stops. You must make sure there is a 1.5-inch clearance of any hardware or any other interference on all sides within the interior daylight size.
    • On a double-hung, will the top SLIP fit between the bottom sash check rail when flitting flush on the upper sash? This may vary by window. Sometimes, you must place the bottom sash check rail to allow for better clearance. SLIPs sit 5/16 inches above the face of the sash.

    If you believe your SLIP™ to be the wrong size, please take a photo of the SLIP™ with a measuring tape showing the size received, and forward to us at support@windowslip.com. If the measurements that you provided were correct and the SLIP was not sized to match your measurements, we will remake and replace the SLIP™ in question at no charge.

    The SLIP™ extrusion inside edge should meet and sit on the outside edge of the putty glazing but should not extend over the putty. The SLIP will extend 3/4 inch to the edge of the sash from the outside edge of the putty glazing and sit approximately 1/4 inch above the face of the sash.

    SLIPs weigh approximately 1 ¾ lb per square foot.

    Currently we only make SLIPs to fit on square and rectangular shaped windows.

    That depends. due to the custom nature of the product and custom-ordered components, we cannot cancel the order once we have ordered material from suppliers. We might be able to cancel an order if the request is received before we order materials.

    A SLIP™ self-install project should be taken on by individuals who are mechanically inclined. Installing SLIPs takes the use of different tools and disassembling and reassembling various components of wood windows. SLIPs are not difficult to install if the individual has background knowledge in woodworking. Although we offer an installation tutorial, this tutorial is not comprehensive enough for successful installation if the installer does not have knowledge and experience with the required tools.

    All shipments under this order shall be made F.O.B. unless otherwise specified. The buyer shall assume freight charges and risks of transportation, including delay, damage, and loss, unless otherwise specified by the Seller. In the absence of specific instructions, the Seller reserves the right to select a carrier and to specify the routing of all shipments.

    The delivery date is the best estimate possible of when the products will be shipped. The Seller shall not be liable for any loss, damage, incidental, or consequential damages due to delays. In the event that the Buyer changes the location of delivery after the products have shipped, the Buyer must contact the shipping company to change the address and may incur additional charges.

    Shipments can be large and heavy, weighing 500+ pounds. The Buyer is responsible at all times for the manner and costs of arranging a complete delivery. The Buyer must inspect the shipment for damages at the time of delivery. Someone who is authorized to sign over the shipment and FreightCenter bill of lading must be present at the time of pickup. If the driver arrives at the pickup location, and either the freight is not ready or there is no one available to sign the bill of lading, he/she will not normally wait. The pickup must then be re-dispatched, which some freight companies charge a re-delivery fee for to cover the extra time and miles.

    Someone who is authorized to sign over the shipment and FreightCenter bill of lading must be present at the time of pickup. If the driver arrives at the pickup location, and either the freight is not ready or there is no one available to sign the bill of lading, he/she will not normally wait. The pickup must then be re-dispatched, which some freight companies charge a re-delivery fee for to cover extra time and miles. We will give notification of the shipment and freight carrier information. You must direct further questions to your freight carrier.

    Yes, we offer installation support. Please email us at support@windowslip.com with your inquiry and contact information, and an installation professional will be in touch soon.

    You can hold onto the extrusions and get another piece of tempered glass to match the extrusion size from your local glass shop. If a SLIP™ is smaller than 50″ for width and height, you can purchase another SLIP™ from us.

    Slips larger than 25 square feet must have 1/4 inch glass.

    SLIPs and components are protected and packaged in OSB wood crates.

    If your SLIP™ Kit arrives damaged, it is important to accept the shipment to document the claim correctly. A claim must be filed within 48 hours of delivery, and it can be done directly online on our site. FreightCenter will act as liaison and assist the customer in processing the claim and filing all necessary paperwork, though we cannot guarantee all claims will be accepted by the shipping company.

    We accept online payment through PayPal.

    Sales tax is charged to customers in the state of Washington.

    We will provide an installation map and product labels for the products to show which SLIPs and subparts go with the windows given on the order.

    It is possible to use ropes for operation with SLIPs. You’ll need to adjust the counterbalance weight in the weight pocket. We do not provide instructions or support for using SLIPs with ropes. Consult a certified installer if you wish to do this.

    SLIPs are a product of aluminum extrusion, gasketing, and tempered glass.

    SLIP™ extrusions come coated from the factory in three colors.

    Many times, windows are painted shut. The certified installer will address this when installing SLIPs.

    On large orders, such as commercial projects or whole households, we may be able to custom-spray your SLIPs. Contact us to discuss this option.

    SLIPs are coated with a PPG paint. This paint acts as a primer that allows for painting.

    Certified installers are required to carry at least a one-year warranty.

    If you notice your crate is damaged during shipping, write this on the bill of lading during the shipment, and take a photo. If the contents inside the box are damaged, take a photo, and report this to support@windowslip.com within 48 hours of shipment.

    Yes. Customers who place an order are asked to provide their measurements to determine the SLIP’s specifications. It is important to make certain that the measurements are correct. We recommend that you work with a contractor or installer of your choice to determine the correct measurements before placing an order. Once a final measurement is provided, and the order is placed, we cannot accept later modifications of product specifications. A refund will not be issued due to customer error.

    To learn how to measure SLIPs, click the link. SLIP™ MEASURING.

    You can report issues with a certified installer by filling out our contact form. Your sole remedy to find a solution lies exclusively between you and the certified installer. Reporting issues with your certified installer may affect the company's standing as a SLIP™ certified installer in the future.

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