Brosco Frequently Asked Questions


1. How do I tilt my Andersen window for cleaning?

2. How do I adjust my Andersen gliding window?

3. How do I adjust my Andersen gliding patio door?

4. How do I adjust my Andersen (inswing) hinged patio door? (For doors manufactured after 1991)

5. How do I adjust my Andersen (inswing) hinged patio door? (For doors manufactured 1988-1991)

6. How do I adjust my Andersen (outswing) hinged patio door?

7. Andersen Wood Casement Units - Sash keeps disengaging from operator arm.

8. Is the Andersen warranty void if I frost or apply a film to the glass?

9. What is the best method to get the AW Sticker off the glass?

10. Does Andersen have anything that can patch a small hole in the vinyl of my Perma-Shield Unit?

11. Can I paint the exterior of my Perma-Shield units?

12. How long is the warranty on glass for BROSCO window units with seal failure?

13. How much can I trim off a wood door?

14. Do I have to finish the bottom of my wood door?

15. Can I paint my wood door any color?

16. How can I stop sap from coming out of my door?


1. How do I tilt my Andersen window for cleaning?

You can easily wash the exterior of both sash of your Andersen Tilt-Wash Double-Hung window from the inside, as follows: Please take extreme care not to lose your balance and fall from the opening.

Raise the lower sash 2-3 inches. Then locate right and left wash assists at the top of the jamb liner. Slide wash assists down to the top of the lower sash. Press wash assists down between the sash and jamb liner until each one snaps into place. Finger rest must contact the top of the sash.

Grip the top of the lower sash and pull inward to tilt it out and down. Allow the sash to rest on the window sill. To prevent injury or breakage, hold firmly until tilted down completely and do not place anything on glass.

Slide wash assists back up to the top of the jamb liner into original position. Upper sash will not tilt out until both wash assists are at the top of the jamb liner.

Pull upper sash down until the bottom of it is 2-3 inches above the lower sash. Depress the right jamb liner with one hand and firmly grip the top corner of the upper sash with the other hand. Pull corner of sash forward just past the jamb liner. Repeat for left side of upper sash. Tilt upper sash out and down so that it rests on the lower sash.

After washing the upper sash, grip both corners of the top of the sash and tilt it upright to the original vertical position.  Press firmly on both corners of the sash until it snaps back into the jamb liner. Slide the sash completely up. After washing the lower sash, grip the top of the sash and tilt it upright and back into the jamb liner. Slide the lower sash down and lock the window. Be careful not to pinch fingers in sash.




2. How do I adjust my Andersen gliding window?

To adjust your Andersen gliding window, open sash slightly and check reveal, full length, between sash and side jamb. Space must be even between sash and side jamb to insure best weatherstrip contact.

Adjust glides by carefully removing buttons on inside meeting stile trim and inserting a flat blade screwdriver into the slot on the adjustment cam. Rotate to move corner of sash up or down.

Upper glides will also need to be adjusted upward for proper operation in head jamb track. Correct adjustment of upper and lower glides will allow sash to slide freely but will not allow it to be lifted out. Do not overturn adjustment cam.




3. How do I adjust my Andersen gliding patio door?

If panel operates stiffly, it may be dragging slightly because the door is out of adjustment. To adjust it, remove caps located on interior bottom rail of door, insert a screwdriver, and turn to raise or lower rollers. Move one notch at a time, checking door operation as you go. Close panel to within one inch of side jamb and check for uniform opening from top to bottom.

On two-panel doors and Frenchwood four-panel doors, if latch will not properly engage with keeper in side jamb, or if panel is not snug after locking, you can make a simple adjustment by turning the screw on the latch plate.

On three-panel doors, you can change the position of the lock plate (on side of stationary panel) by loosening the screw.

As needed, use a dry lubricant on the door track.




4. How do I adjust my Andersen (inswing) hinged patio door? (For doors manufactured after 1991)

METHOD 1 for Patio Door Adjustments (for doors manufactured after 1991)

Horizontal Adjustment - The active panel must be open in order to access the horizontal adjustment screws during the horizontal adjustment procedure.

The hinges have a horizontal adjustment range of 5/16". They are factory set at the midpoint of this range.

STEP 1: Make sure that Position Fixing screws are tight by turning clockwise. Then close the door and check for interference between the unit frame members and the active panel. If the clearance is not equal or there is interference, the active panel should be adjusted.

STEP 2: Using a 5/32" hex wrench, loosen the position fixing screws on the upper and middle hinges 2-4 full counter-clockwise turns. Do not remove position fixing screws from the hinge.

STEP 3: Insert 5/32" hex wrench in horizontal adjustment screw of the upper hinge. To increase clearance at lock jamb, turn horizontal adjustment screw clockwise in upper hinge. To decrease clearance at lock jamb, turn horizontal adjustment screw counter-clockwise in upper hinge. A half turn of the horizontal adjustment screw equals appoximately 1/16" of adjustment.

STEP 4: Tighten screws in upper hinge, careful not to strip the screws.

STEP 5: Close the door and check the clearance between unit frame members and active panel. If the interference is NOT eliminated, repeat steps 2-4.

STEP 6: Go to the middle hinge(s) and turn the horizontal adjustment screw approximately half of the amount adjusted on the upper hinge. Tighten set screw, careful not to strip the screw.

STEP 7: Check the door operation. If there is binding at the middle hinge(s) repeat step 5.

Note: If horizontal adjustment will not eliminate the interference, vertical adjustment may be necessary.

Vertical Adjustment - It is recommended that the door be open slightly during the vertical adjustment procedure.

The hinges have a vertical adjustment range of 5/16". They are factory set at the midpoint of this range.

STEP 8: Check for interference between the unit frame and the active panel at the top and bottom of the unit. If there is interference, the panel will need to be adjusted up or down.

STEP 9: Open door slightly.

STEP 10: Up Adjustment. Insert a 5/32" hex wrench in the vertical adjustment screw of the lower hinge. Turn the adjustment screw clockwise until clearance is achieved between the panel and frame at bottom of unit. Close the door to check clearance. Return door to slightly open position.

STEP 11: To equalize adjustment, go to the middle hinge, turn the bottom vertical adjustment screw clockwise until panel begins to move up (back off 1/2 turn). Repeat this step.

STEP 10A: Down Adjustment. Go to the middle hinge. Insert 5/32" hex wrench in the vertical adjustment screw. Turn screw counter-clockwise as fas as possible without forcing. Repeat on lower hinge. On the upper hinge, turn vertical adjustment screw counter-clockwise until clearance is achieved between panel and frame.

Step 11A: Go to middle hinge and turn adjustment screw clockwise until screw is seated then back the screw 1/4 turn. Repeat on middle and lower hinge.

CAUTION: Do not over tighten vertical adjustment screws. This will cause tight operation and damage to the hinge.




5. How do I adjust my Andersen (inswing) hinged patio door? (For doors manufactured 1988-1991)

METHOD 2 for Patio Door Adjustments (for doors manufactured 1988-1991) 

Horizontal Adjustment - The hinges have a horizontal adjustment range of 9/32". They are factory set at the midpoint of this range.

STEP 1: Close the door and check for interference between the unit frame members and the active panel. If the clearance is not equal or there is interference, the active panel should be adjusted.

The active panel must be open in order to access the horizontal adjustment screws during the horizontal adjustment procedure.

STEP 2: Using a 5/32" hex wrench, loosen the position fixing screws on the upper and middle hinges 2-4 full turns. Do not remove the set screws from the hinge.

STEP 3: Insert 5/32" hex wrench in horizontal adjustment screws of the upper hinge. To increase clearance at lock jamb, turn horizontal adjustment screw clockwise in upper hinge. To decrease clearance at lock jamb, turn horizontal adjustment screws counter-clockwise in upper hinge. A half turn of the horizontal adjustment screw equals appoximately 1/16" of adjustment.

STEP 4: Tighten screws in upper hinge, careful not to strip the screws.

STEP 5: Close the door and check the clearance between unit frame members and active panel. If the interference is NOT eliminated, repeat steps 2-4.

STEP 6: Go to the middle hinge and turn the horizontal adjustment screw approximately half of the amount adjusted on the upper hinge. Tighten set screw, careful not to strip the screw.

STEP 7: Check the door operation. If there is binding at the middle hinge repeat step 5.

Note: If horizontal adjustment will not eliminate the interference, vertical adjustment may be necessary.

Vertical Adjustment - The hinges have a vertical adjustment range of 5/16". They are factory set at the midpoint of this range.

STEP 8: Check for interference between the unit frame and the active panel at the top and bottom of the unit. If there is interference, the panel will need to be adjusted up or down.

It is recommended that the door be open slightly during the vertical adjustment procedure.

STEP 9: Open door slightly. Go to the upper hinge and insert the 5/32" hex adjustment wrench through the top of the hinge into the vertical adjustment screw. Turn the adjustment screw counter-clockwise until resistance is met. Repeat this on other two hinges. The active panel is now ready to be adjusted up or down.

STEP 10: Up Adjustment. Insert a 5/32" hex wrench in the bottom vertical adjustment screw of the lower hinge. Turn the adjustment screw clockwise until clearance is achieved between panel and frame at bottom of unit. Close the door to check clearance. Return door to slightly open position.

STEP 11: To equalize adjustment, go to the middle hinge, turn the bottom vertical adjustment screw clockwise until panel begins to move up (back off 1/2 turn). Repeat this step.

STEP 10A: Down Adjustment. Go to the middle hinge. Insert 5/32" hex wrench in the bottom vertical adjustment screw. Turn screw counter-clockwise three full turns. Repeat on lower hinge. On the upper hinge, turn bottom vertical adjustment screw counter-clockwise until clearance is achieved between panel and frame.

Step 11A: Go to middle hinge and turn bottom adjustment screw clockwise until screw is seated. Repeat on lower hinge. On upper hinge turn top vertical adjustment screw clockwise until screw is lightly seated then back the screw out 1/2 turn. Repeat this step on middle and lower hinge.

CAUTION: Do not over tighten vertical adjustment screws. This will cause tight operation and damage to the hinge.

Adjustments for Active/Passive or Passive/Active Units only:

After all hinge adjustments have been made make a pencil mark where the top of the latch strikes the latch receiver. Loosen blocker adjustment screw at bottom of blocker. Slide blocker up or down so that the lower surface of blocker lines up with the pencil mark. Tighten blocker adjustment screw. Close and lock both panels.




6. How do I adjust my Andersen (outswing) hinged patio door?

1. Determine required adjustments: Horizontal adjustments move the panel side to side to square and center panel in opening. Vertical adjustments move the panel up and down to center panel in opening.

2. Vertical Adjustment: Adjust hinges with panels open. The panels should be supported by all hinges. 

Insert a 5/32" hex wrench through hole in bottom of hinge and into vertical adjustment screw. Turning vertical adjustment screw to the right will raise panel. Turning vertical adjustment screw to the left will lower panel.  Slowly turn vertical adjustment screw on each hinge one turn. Three full turns moves panel 1/8" up or down. Adjust hinges (3 or 4 per panel) until there is approximately a 1/8" reveal between frame and top of panel(s). Equalize the load on hinges by turning each vertical adjustment screw to the left until the panel moves slightly, then turn it to the right 1/4 of a turn.

3. Horizontal Adjustment: Horizontal adjustments are made by using one of the hinges as a pivot point. The pivot point should be the horizontal part of the door that is most centered in the opening.

Insert hex wrench into Hole Plug and lift it upward. Hole Plug should remain attached to door panel to prevent loss. Insert the hex wrench into the Horizontal adjustment screw. Turn clockwise to increase the space between panel and frame. Turn counter-clockwise to decrease the space between panel and frame. Three full turns will move panel 1/8". Adjust hinges until there is a 1/8" - 1/4" reveal between astragals and an equal reveal between panel(s) and side jambs as viewed from the exterior.  Reinsert Hole Plug.

4. Blocker and Tab Adjustment:  Place a pencil mark where the top of the Latch Bolt strikes the Latch Receiver. Loosen Blocker Adjustment screw with a phillips screwdriver and slide Blocker up or down so that the Lower Surface of blocker lines up with the pencil mark and retighten blocker adjustment screw. Close and lock both panels. Adjust Hook Bolt Receivers if Hook Bolts do not stay in position when locking. Unlock panel(s) and open door(s). Use the adjustable tab in the Latch Receiver, Hook Bolt Receivers and Flush Bolt Receivers to achieve adequate weatherstrip compression. To adjust the receiver, bend the tab with a flat blade screwdriver.

Andersen Frenchwood Hinged Door Receiver Tab Adjustments:

Use the adjustable tab in the Latch Receiver, Hook Bolt Receivers and Flush Bolt Receivers to achieve adequate weatherstrip compression. Adjust the tab with a flat blade screwdriver. Adjust Hook Bolt Receivers if lock mechanism hook bolts don't stay in position when locking.




7. Andersen Wood Casement Units - Sash keeps disengaging from operator arm.

When sash is disengaged from operator, put hand around arm of operator and bend slowly in upward position. This will put tension on operator. Engage arm back onto bottom sash.


8. Is the Andersen warranty void if I frost or apply a film to the glass?

Yes, it is.


9. What is the best method to get the AW Sticker off the glass?

Soapy water and a plastic scraper, if needed.


10. Does Andersen have anything that can patch a small hole in the vinyl of my Perma-Shield Unit?

Yes. Vinyl patching compound.


11. Can I paint the exterior of my Perma-Shield units?

Yes. Certain colors - although it is a low-maintenance product, paint is adaptable. A sample of the paint on a wood slab will have to be sent to Andersen before hand to make sure that the color to be used doesn't void the warranty.


12. How long is the warranty on glass for BROSCO window units with seal failure?

10 years from date of purchase. Prior to 1992, it had a five-year warranty.


13. How much can I trim off a wood door?

No more than 1/2" off the top and 1-1/2" off the bottom and no more than 1/2" in width. Trim up to 1/4" off each edge.


14. Do I have to finish the bottom of my wood door?

Yes. All surfaces - Top, bottom, edges, inside and outside must be finished or the warranty will be void.


15. Can I paint my wood door any color?

No. Dark colors are to be avoided.


16. How can I stop sap from coming out of my door?

Remove all finish materials from effected areas by scraping or sanding to bare wood. Wash with mineral spirits and allow to dry. Apply two coats of white pigmented shellac and allow to dry before re-applying top coat finish.