Cleaning the Glass and Frame

Cleaning the Glass

The description below applies to single-or double-hung windows. Other than sash operation, cleaning is the same on all window styles.

How to clean Viwinco Windows with one hand operation - Tilt-n-Lock

Step 1
  • Lift the bottom sash several inches
  • Engage the tilt latch mechanism
  • Pivot the lower sash inward until it rests on the sill
Step 2
  • Lower the top sash at least several inches, exposing the tilt latch mechanism located on the top edge of the sash.
  • Engage the tilt latch
  • Pivot the upper sash inward until it comes to rest.
Step 3
  • Clean the outside part of glass of the upper sash using an approved glass cleaning solution or mildly soapy water
  • Wipe clean using a lint-free cotton cleaning rag
  • Once complete, pivot the upper sash back into position.
  • Retract the tilt latches to ensure they engage back into position.
  • Clean the inside face of the glass on the upper sash.
Step 4
  • Repeat Step 3 with the lower sash.


When Cleaning Sungate® 600

When cleaning Low-E Pyrolytic Glass (included in Viwinco’s R-4 and R-5 packages), always use a mild soap or glass-cleaning solution and a soft, lint-free cloth. Do not use abrasive cleansers. Make sure to adequately wet the glass surface to allow for more thorough cleaning and to help prevent streaking when drying.

If a metal object such as a razor blade comes into contact with the Low-E pyrolytic coated surface and leaves a residual deposit, use one of the following commercially available cleaners or solutions to remove it: Lime-A-Way® Cleaner; Simple Green® Lime Scale Remover; CLR-Calcium Lime and Rust Cleaner; Household Vinegar; Lysol® 4 in 1 All-Purpose Cleaner; Finish® Jet-Dry® Rinse Agent; Windex® Multi-Surface Vinegar Cleaner.

 After cleaning, completely rinse the solution from the glass to return it to its original appearance.

Download a Document on Proper and Effective Cleaning of Sungate 600.


Cleaning the Frame

Caution: Do not use harmful cleaners on PVC (vinyl) products

Maintaining the original color characteristics and retaining resistance to cracking are critical to years of problem free performance of PVC products such as vinyl windows and doors, and vinyl siding. Both color retention and impact resistance are significantly harmed by even minor exposure to cleaners containing certain chemicals, or solvents.

Typical symptoms of harmful chemical exposure include: dark splotches, streaking, heavy yellowing, surface hazing, brittleness, cracking and distortion.

Especially harmful to PVC products are those chemical agents that originate from the same basic chemistry as that of the PVC; specifically petroleum and its derivatives. Examples of these (commonly referred to as organic solvents) are methylethylketone (MEK), acetone (Dimethyl ketone), benzene or other aromatics like xylenes/ toluene, and ethers such as tetrahydrofuran (THF) or other similar chemicals known as petroleum ethers or distillates.

Check the label. Cleaners containing these or other similar harmful chemicals should never be used on or near PVC products. Immediate and permanent damage can occur.

Cleaning PVC Profiles:
  1.  Never use any cleaners or thinners which contain organic solvents or petroleum ethers at any time before, during, or after the manufacturing and installation of PVC products.
  2. See Suggested Cleaners list below. These products are excellent for cleaning and wiping dirt and hand prints from PVC surfaces. Usually soap based cleaners that use surfactants that are water soluble are safe. These types of cleaners allow the vinyl to retain both color and crack resistance because they do not react with or dissolve the surface of the PVC
  3. All cleaners should first be pre-tested by submersing a scrap of PVC for at least 48 hours. Compared to the original the test part should be the same color and not be softened or changed in any way.
Suggested Cleaners:
  1. Dawn®
  2. Fantastic®
  3. Murphy® Oil Soap
  4. Windex®
  5. Lysol®
  6. Simple Green®

Further Reading: Additional information on caring for vinyl windows can be found on the AAMA website:


Hardware Maintenance

Hardware components that allow for sash or panel movement such as, the balance cavities on hung windows, the crank mechanism and tracks on casements, and the roller assemblies on patio doors, require occasional lubrication. Lubrication of these moving parts will extend their life and allow for ease of operation. Viwinco recommends the use of silicone spray. Do not use petroleum-based products, as they will leave a residue over time.

  • Make sure the area to be cleaned is free of dirt and debris before application.
  • Spray on the lubricant. Wipe off excess amounts with a lint-free cotton rag.
  • Operate the sash or panel several times to allow for proper penetration.

See Cleaning the Hardware for more information.


Service and Warranty

Viwinco has placed identifying information for service and repair in the head channel of the frame, on the edge of individual sashes, and on the screen frame. In the event of damaged components, please refer to your warranty information for further instructions, or visit our website at