Tuesday, March 25, 2014

How To Remove and Replace Glass

This is not your everyday BloG!
Not sexy. Not Pretty.
Down and Dirty!

Today, we're fixing an old putty window!
It's called "glazing", to put glass into a frame.
And officially my job title is "glazier". 
OK. English lesson, over.

Identify the Outside of the window
 you'll see a routed wood edge next to the glass on the inside.

On the reverse side, you'll see
the putty side, usually obvious because
      some putty is probably falling out!

Run a knife along the straight wood edge to
loosen  and remove the putty.

As with any woodworking project run your knife with the grain. 
Going against the grain will cut into the 
wood, rather than cut out the putty.

My dad used to describe the scale of hardness on old putty as:
Hard as concrete
Hard as a rock
Hard as the back of your Head!

So be very careful you don't slip and get cut!

Woops! Almost forgot, Use safety glasses
             and gloves! Much better than cuts and errant glass slivers!

 By pushing up from the underside you can get the glass to
come out, with hopefully some of the putty.

There are many methods to removing glass and putty.
A woman I know used to lay the window face down on the concrete floor
and pound it out with a hammer. Hopefully today's method is a little less destructive!

On bigger pieces of glass you can use a glass cutter to score the glass, break it from
underside, and remove as before.
I like to cut the glass beginning at the corner moving toward the middle.

 Along with glass and putty, you need to remove any "points"
like the diamond points shown.

Clean out the groove with either a razor knife,
a wood chisel or chisel type putty knife.

Now you're ready for glass.

Measure so that you have about 1/16 of an inch clearance all the way around.


Place the glass in the opening.  Then use push point type glazing points that can be pushed into the wood, OVER the top of the glass as shown.
Instructions on the package will suggest wiggling the knife as you insert the point.
Too much pressure may cause the glass to break!

I have replaced glass with mirror, paneling, chalk board, sheet metal
 and many other things in projects I have done.
But, removal of the glass is the same
for all projects.

Then using an acrylic caulking (acrylic caulking is paint-able) run a bead
of caulking over the points AND glass in a V shape.  Cut the nozzle
slightly smaller than the groove, so that caulking is not visible through
the glass from the outside.

This would be considered a upgraded repair rather than an
original restoration grade repair, using putty!

I recommend caulking because it lasts longer, and remains pliable.
Many times I choose a caulking the same color as my project, if
possible because I am insufferable lazy!
If' you'd like a tutorial on putty contact me at glasscarters.com

The caulking can be smoothed with a putty knife or a moistened finger.

If the back side of your project will never be visible, you may want to skip the
caulking altogether, and just use the glazing points alone.
I used framing points that are shot from a gun over paneling here.

All Set!  This is the same procedure for almost all of your window projects.
Have fun and be careful!

Oh, did I mention, BE CAREFUL!!

Here's the end result!
a 2' x 2' simple chalk board
available at the Boutique
Friday & Saturday!

If you like what you see here be sure to check out our 24/7 Online Boutique Reclaim-ologists and Other Crafty Chicks!

No comments:

Post a Comment