How to Preserve a Timber?

1. Tarring:

It consists coating with tar or tar mixed with pitch. Embedded portion of timber fence posts, ends of door and window frames, batten and beams built in wall are usually tarred.

2. Painting:

A paint when applied on the timber act not only as a good preservation but also it enhance  the appearance of the surface so treated.

3. Charring:

 Lower ends of the post that are to be embedded in ground are generally charred with a view to prevent dry rot and attack of worms. It is done by quenching the ends of posts in water after they are charred on wood fire to a depth of 1.5 cm.

4. Wolman Salt:

This salt consist of creosote and sodium fluoride and is soluble in water. It is odourless and levels no stain on wood. After treatment timber should be painted or varnished.

5. Fire proofing:

Timber cannot be made completely fireproof. However, treating as below it can be made fire resistant to a sufficient extent.Soaking timber in ammonium sulphate, ammonium chloride, sodium arsenate, zinc chloride etc, imparts fire resisting properties.

6. Creosoting:

Creosote has over the years demonstrated to be the highly efficient in protection of wood against attack by rot, fungi and insects. In this method dark brown oily liquid used.

7. ABET’S Method:

ABET  stands for "Accreditation Board for Engineering and Technology".
In this method, we applied salt on timber to preserve from fungus, rot etc.