Timber Core

Timber core is a traditional core extracted from natural resources. Timber core is very popular and common filler used for many years. Mango, Pine, Meranti etc. are commonly used species of timber. Strong and rigid Timber core is also known as solid core or block board.

Timber is chemically treated as per IS:10013 by a chemical known as CCA (Copper Chrome Arsenic) and vacuum pressured as per IS: 401. CCA is a water soluble wood preservative which is applied by proper vacuum pressure scheduled by Full Cell Method or Fast Fluctuating Process of treatment.

As per international practices, timber members in service are classified into different hazard levels depending upon circumstances of use. In India, the nodal standard for wood preservation is IS 401 i.e. recommended practice for preservation of Timber.

According to IS 401, we build timber doors or frames of Group 5 category. Group 5 includes building timber in interior use which is not in contact with ground or soil and used in dry conditions. The preservatives with individual salt retentions recommended
for Group 5 is CCA 4 kgs/m³.

The treatment strengthens the wood for durability. Chemically treated wood is generally seasoned at the automatic kiln seasoning plant as per IS:1141 reducing the moisture as per the standard requirement mentioned in the IS: 287.

Modern technology of ' finger joint system' for stile and rails not only makes the door stronger but also reduces the chances of
warping to greater extent.