Measurement and installation

Technology

Optoglas is made of 4 mm heat-treated glass with or without energy coating and is fitted using special hinges and fittings on the window frame so that the glass can be opened for cleaning. A wooden bumper rail with Q-Lon weather seal can be fitted on the inside casing to seal the window tightly on the side facing the room.

How we do it

We offer to measure up to your Optoglass. Price in Greater Copenhagen 2000 DKK incl. VAT. Contact us at info@optoglas.dk for more information.

Here’s how you do it

Before you measure, you can see how to measure here:

  • Mark with a pen or awl all four corners where casing and window frame meet.
  • Then open the window and measure the distance between the marks.
  • You can also determine the dimensions of the glass by measuring from casing to mullion and from windowsill to sash bar or frame head.
  • As the secondary pane requires a certain amount of clearance, the glass is cut smaller than the actual dimensions. Tolerance should not be included when measuring. Only gross dimensions are required, since the glass will be cut to size at the workshop.

2.

  • Dimensions A, B, C, and D apply to a right-angled frame.
  • If the frame has a parallel displacement and no right angles, the E-dimensions can also be given as shown on the drawing.
  • If the height of the two sides – or the breadth at the top and the bottom of the window – differs, a square can be used to determine whether one of the corners is a right-angle.

3.

  • If frames are very warped or have curved top pieces, it may be necessary to make a template of thick cardboard or Masonite. Please contact us if you need any further information.

Measurement form for craftsmen

How we do it

We can offer installation of Optoglas as well as inspection and restoration of your window frames. Write to info@optoglas.dk for more information. We have a skilled team of installers, carpenters and painters.

Here’s how you do it

Optoglas can be installed in two ways: Model 16 is the classic version with visible sealing strips. This installation requires no intervention in the existing window. Model 22 is primarily used when installing Optoglas on newly manufactured windows, or on windows where you want invisible sealing strips. This installation requires increased rebate depth. Installation of Optoglas bracket model 16 with visible sealing strip 1.

  • Mark the four corners of the casing on the window frame, in the same way as when measuring. Remove the frame and lay it flat.
  • Then place the removable glass on the frame, ensuring that the distance to the four marked corners is equal. Mark the positions for hinges and casement stay fittings through the holes in the glass.

2.

  • Screw the hinges onto the frame and fit the glass onto the hinges.

Remount the frame, close the window, mount tail hooks for casement fasteners on the centre mullion, attach the tail hook for the casement stay on the side jamb and fit the weather seal around the entire casing. When fitting the weather seal, it is important to press the Q-Lon strip carefully against the glass (press in 1 – 2 mm) to achieve the correct result. Installation of Optoglas bracket model 22 with cut-out in rebate for sealing strip

  • Mark the four corners of the casing on the window frame, in the same way as when measuring. Remove the frame and lay it flat.
  • Then place the removable glass on the frame, ensuring that the distance to the four marked corners is equal. Mark the positions for hinges and casement stay fittings through the holes in the glass.

2.

  • Screw the hinges onto the frame and fit the glass onto the hinges.

3

  • Mill 11 mm in the rebate to make room for the Optoglas and sealing strip. The sealing strip is pushed with clamps into the frame rebate all the way around (stainless steel).

Optoglas requires no special maintenance. When cleaning the window, unscrew the casement stay and then open the secondary pane to clean inside.
We do, however, recommend cleaning in calm weather conditions. Even though Optoglas is made of heat-treated glass, damage can happen. If the glass does break, the heat treatment will ensure that it shatters into many pieces that are not sharp. Procedure

  • Unscrew the casement stay. This will release the heat-treated pane, which can be removed from the frame.
  • It is a good idea to open both window frame and secondary pane outwards at the same time.

Optoglas is installed all over Denmark. We have a list of craftsmen. We do not have permanent partners Outside Denmark yet.

Optoglas accessories

Glass
Standard Optoglas is 4 mm heat-treated glass, around five times stronger than ordinary window glass. It is also deliverable as 4 mm heat-treated energy glass with reflective coating.
Optoglas is delivered to measure with three pre-drilled 8 mm holes for fitting casement fasteners and stays. Holes are usually placed 16 mm from the glass edge since, according to the glass manufacturer, the smallest distance should be twice the thickness of the glass.
Hinges and fittings
Standard Optoglas has corrosion-proof special hinges, bushings, casement fasteners, casement stays, tail hooks and distance buttons. Find pictures below of the accessories.
The hinge is made of 4 mm brass with a stainless steel pin as hinge pivot. The hinge has two countersunk screw holes for fitting the pane on the window frame and one M5 tap hole for mounting the casement fastener and bushing that support the glass.
The casement fastener has an M5 eye bolt.
All common casement stay types can be used, although these must be equipped with an M5 eye bolt.
Bushings are made of light-resistant Delrin. The outer diameter is 7.95 mm with M5 thread on the inside.
The white Q-Lon weather seal consists of polyethylene foil, polyethane foam and semihard polypropylene.
Wooden beading is pinewood, either untreated or primed with white paint.

Airing casement fasteners

White powder coated (left model), brass colored (right model).
Can be delievered in a left and a right model.

Standard hinge

White powder coated brass hinge, brass hinge.

Hængsel – long model

White powder-coated brass hinge, brass. 22 mm from back to center of mounting hole. For new windows and with rebate milling when installing concealed sealing strips.

Steel, white powder coated, brass colored, white powder coated with an extra hole.

Stål (udgået), hvid pulverlakeret, messingfarvet, hvid pulverlakeret med ekstra hul.

Classical casement fasteners

Steel and white powder coated.

Special casement fasteners

Steel and white powder coated.

Tail hooks

White powder coated, brass colored, steel.
Fits to the classical casement fastener and casement stay.

Tail hooks

Tail hooks in ‘vertical pairs’. 1. row: steel and white powder coated with child safety for special casemant fastener, 2. row: brass colored, white powder coated for airing casement fastener, 3. row: steel, brass colored, white powder coated for special casement fastener, 4. row: white powder coated double tail hook for classical casemant fastner and casement stay.

Distance buttons

Silicone distance buttons to be fitted on the Optoglas, one in each corner.

Nylon bushings

To be fitted between the glass and the hinge.

Brass fittings

Brass fittings

Sweep lock

For inward-opening Optoglas and by fitted on fixed frames. Brass colored, white powder coated.

Standard set

This is what a standard set from Optoglas looks like. Notice that the logo is delicately but almost invisibly embedded in the bottom of the glass. This means that it is the original Optoglas

Why choose Optoglas?

  • Energy optimization

    Optoglas insulates 30% better than similar thermal windows and has a better U-value (2.2) than a 2-layer thermal pane. By using special neutral energy glass, a U-value of 1.7 is achieved – equivalent to a 3-layer thermal pane (DS 418).

  • Instructions and installation

    We have extensive experience in restoration craftsmanship and offer both guidance and installation of Optoglas on your existing windows.

  • Better indoor climate

    Optoglass improves the indoor climate while reducing outside noise, making your property more comfortable.

  • 5-year warranty on all fittings

    As a member of the Glaziers’ Guild, you get a 5-year warranty on all fittings installed in connection with Optoglas on your current windows.

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