Timber Deck Maintenance - Is your deck safe?

To achieve satisfying long-term performance from your timber framed deck, perform regular and effective maintenance at appropriate intervals, including re-application of the decking finish and a physical inspection for deterioration of timberwork and fixings and termite activity.

Oil or stain finishes should be re-applied every 12-18 months while the timber retains some water repellency. Water ‘beading' on the surface indicates that the water repellency is effective. Water absorbing into the surface indicates that the water repellency is being reduced or has been lost. Carry out preparation and reapplication in accordance with manufacturer's recommendations.

When applying decking oil or stain as a maintenance coat use a similar technique as for the initial coat. As with the initial coat, only apply as much finish as the timber will absorb. Do not load the applicator too heavily and push the finish well out along the timber. 

If more finish has been applied than the timber will absorb in places, brush any excess out along the boards or remove by wiping with a soft cloth. 

Undertake regular competent structural inspection of the underside of the deck (eg annually) for signs of deterioration of the footings, footing brackets, structural and decking timber and fixings. 

Please note:  If you do not feel that you are able to perform suitable inspections we suggest that you employ the services of a licensed professional building inspection service to perform the inspections and provide you with a written report of the condition of your deck and any maintenance which may be required.  

Safety Tip: Restrict access to the deck while you are carrying out any inspection.  If you have found significant deterioration, leave the area immediately and restrict access to the deck until you have had the structural safety of the deck confirmed and affected timberwork repaired or replaced.