Installation Guidance

Choose Screws

 

The advantage of using wood screws over nails and staples is that they are superior in applications where firm joints are required because of the high clamping force created between the wood or metal attachment and the surface of the wood into which the screw is driven.

 

Wood screws can be removed and replaced if any subsequent adjustment to the assembly is necessary. Adjustment is not possible to nailed joints particularly if the nails and staples have been clinched. Unclinched nails can be removed but not without causing damage to the exterior face of the attachment. 

 

When deciding on which length screw you need for the application it is important to remember that a screw should penetrate the substrate (joist) 60 per cent of its length.

Pilot Hole Sizes for Hard Woods

Not sure what size pilot hole you need to drill for hard woods? Here is our recommendation of pilot hole sizes you need for various screw guages:

Pilot Hole Sizes in Masonry

Due to the wide variants in brick, block and concrete densities the pilot hole diameter required can vary dramatically. 

 

In most instances, one would drill one millimetre in diameter less than the screw diameter.  

Spacing of Woodscrews

Not sure on the spacing of woodscrews you need for your application? See the table below for guidance.

 

NB: spacing is subject to a screws load bearing capacity.

Spacing of Woodscrews D = Diameter of Woodscrew

Metal to Metal Contact

Many corrosion problems occur when two dissimilar metals are in contact, leading to electro-chemical activity in damp conditions. This can be reduced or eliminated by controlling the ambience (e.g. limiting the humidity), or isolating dissimilar metals by insulating compunds, washers etc. Further protection can be given by applying coatings of grease, paint, waxes, etc.

 

For more information on corrosion click here.

 

PLEASE NOTE: THE ABOVE INFORMATION IS FOR REFERENCE ONLY. THIS CAN DIFFER DEPENDENT UPON THE APPLICATION. 

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