C5: Workmanship5.1 STORAGE
Timber on the site shall be stored under cover, clear of the ground and protected from dampness. Timber shall be stored on level bearers located at centres sufficiently close to prevent distortion. Timber that is not stored in this manner shall be rejected.
Wall plates, ceiling joists, etc., shall be in one length where possible. All joints shall be made directly over supports and these shall be scarfed and spiked where required.
All joinery is to be finished with a smooth wrought face. Surfaces intended for painting shall be such that when properly finished with matt paint, imperfections in manufacture will not be apparent. Surfaces for gloss or matt transparent finish shall be such that when so finished no imperfections shall be apparent. Joinery intended to be painted is to be fixed by stainless steel nails. Nail heads are to be punched below the surface and are to be filled with leadless paste filler. Joinery intended for transparent finishes is to be secretly fixed. Heads of screws are to be left in and pelleted in the same wood and with matching colour and grain. In general all fixings are to be stainless steel or silicon bronze unless otherwise stated.
Unless timber is impregnated with preservative, the backs of frames etc., to be fixed to walls and all other bedding surfaces are to be painted with two coats of preservative before priming. All work to be painted is to be treated with knotting as necessary and given one brush coat of priming to all faces. Surfaces to be joined are not to be primed. The number of coats and methods of application of all finishes are to be as specified.
5.3 MAKE GOOD DEFECTIVE WORK
Should any shrinkage and warping occur or any other defects appear in the joinery work before the end of the Defects Liability Period, such defective work is to be taken down and renewed to the architect's satisfaction, and any work disturbed in consequence must be made good at the contractor's expense.
The term plugging shall mean the provision and fixing of hardwood or approved proprietary plugs. Prices are to include all necessary wedging and drilling of wood, concrete or brickwork.
Where plugging and screwing of door or window frames is measured this shall be deemed to include plugs and screws of adequate size and strength to suit the frame size including proprietary frame fixings as manufactured by (state brand name), or equal and approved.
5.5 WORKMANSHIPAND MANUFACTURE
The joinery shall be constructed as indicated on the architect's details and the manufacturer is to be responsible for the sound construction of the components using recognised forms of joints in appropriate positions. Workmanship in general shall be in accordance with BS 1186, Part 2, and in particular with Clauses 2.1; 2.2.1; 2.3.4; 2.4.2; 2.5 and 5.
Joiners' full-scale setting out drawings and construction details must be seen and approved by the architect before work begins. Facilities are to be given for the architect to inspect all work in progress in the manufacturing shops and on the site
5.6 HANDLING, STORAGE AND PROTECTION
The completed doors, windows and panels shall have their moisture content as described under `Moisture Content' (1.4) and must at all times be protected from the weather and stored under cover and clear of the ground. Transportation shall be in covered trucks. Every possible care and precaution must be taken to avoid damage to framing, all surfaces and arises during handling and storage.
Any preservative treatment shall be applied and allowed to dry before installation and painting to ensure all surfaces are treated.
Doors, windows and panels shall be protected against moisture penetration and coated with paint or other surface coatings as soon as possible after installation. Protection against damage must be maintained until handover.