Extract windows professionally

Especially wooden windows are very nice, but exposed to the weather conditions all the more violent. Therefore, wooden windows are treated with paints, varnishes and wood preservatives. These must be renewed after some time. Then it is time to abrade, strip off or drain off. When you drain a window and what is important to note, we show you here.

Wooden windows are always protected

Wooden windows are among the most beautiful windows ever. In the past, they were the building material of choice for windows anyway. So just historical and old buildings have very beautiful wooden windows. But wooden windows must also be protected against the weather. The following products are eligible:

  • paints
  • glazes
  • Wood preservatives

With many layers of paint, sanding is often no longer sufficient

For varnishes and glazes, a distinction must be made between transparent, semi-transparent and opaque products. Usually the wood window is deleted as a preparation work mentioned the grinding - so also with us. But if several glaze or varnish layers are already applied (from independent window renovations), sanding is often no longer sufficient.

The pickling and leaching of windows

Then the paint or the glaze must be removed elsewhere. Now the window is either leached or pickled. Pickling is a little less risky than leaching. There are paints that contain non-saponifiable binders. In this case, only the pickling helps. These include the following paints: emulsion paints and acrylic paint (water-based paint). However, oils and varnishes as well as oil-based alkyd resin paints are saponifiable.

Typical alkalis for leaching

The alkalis used are based on potash, caustic soda or ammonia. These products share the alkaline properties. That is, they are corrosive. Accordingly, it is imperative to take protective measures during leaching. This includes a very good ventilation in rooms and of course the right work clothing (gloves, protective clothing, respiratory and eye protection).

Not every type of wood is equally suitable for leaching

Although the ablaugbaren paints and varnishes dissolve so well, but the lye can attack the wood glue or even the wood. In particular, wood with many tannins (such as oak) is risky. If the lye remains on the wood for too long, tannin-acid salts are formed which lighten the wood in places. Then the wood has to be dimmed again. Suitable are vinegar or citric acid.

Always first test whether the leaching is the right method

So before a window is to be leached, you must absolutely in a non-visible area to test whether the glue is attacked by the lye. In addition, the window must remain in a lye until it is absorbed by the wood. As a result, the wood can be forgiving. Not to mention the stain discolouration, if you leave the lye too long on the wood.

Only lye windows with appropriate experience

The leaching of wood and corresponding windows is therefore not without problems. Therefore, you should dare especially with old, worthy wooden windows only to the waste water, if you have appropriate experience. In addition, you must not forget that you must know exactly which paints are applied to the window, because not all paints and colors can be leached.

Tips & Tricks

Owners of valuable furniture and other wooden components can not rely on offers, in which companies offer Ablaugbäder. The risk is too high for many professionals that the structure of the wood could be damaged.

Video Board: How To Clean Windows Professionally - Straight Pulls (Pole)