Introduction
Timber is a natural but sustainable product, and, if properly treated, is subject to changes due to variations in humidity and temperature. If doors or windows are exposed to such changes without correct treatment, movement or distortion, such as swelling, shrinking, warping or splitting will occur.
Handling
Doors and windows should be handled carefully to avoid physical damage. Handle with clean gloves and do not drag doors across each other or across other surfaces.
Storage
Doors must be stored flat( not on edge or on end ) on a level surface and kept clear of the floor on at least 3 level bearers. The bearers should be longer than the width of the door. Doors and windows should be kept in a clean, dry location and should be fully sealed before use. Exposure to sunlight, ultra violet light, or extremes of humidity and heat should be avoided. Doors should never be stored in an area, which is subject to extremes in temperature. The storage area should be well ventilated and not recently plastered. Special care should be taken in a centrally heated or air conditioned building where moisture content could build up.
Claims for twisting, bowing, shrinking or swelling that are moisture related ( while the doors are not sealed according to our guidelines ) will be rejected.
Sealing
It is essential that all doors and windows are fully sealed with a suitable base sealer on both faces and all FOUR edges plus any cut-outs for locks etc. As soon as this work has been completed, use TWO coats of base sealer or primer for all exterior woodwork : one coat for interior woodwork. Prior to priming or sealing, lightly sand off any handling marks and variations caused by exposure and ensure the surface is dust free. Do not use wire wool or other sanding materials containing steel/iron on Oak doors.
Precautions
It is strongly recommended that freshly plastered locations are completely dry and there is no sudden, obvious change in humidity. This will avoid excessive moisture penetration or excessive warping of internal doors. Excessive moisture intake is the most common cause for failure.
Maintenance
Regular maintenance of doors and windows should be made to prevent breakdown of the wood finish and to protect the timber from deterioration.
