Browse Forums Outdoor Living 1 May 12, 2010 7:05 pm As we have a slab in our alfresco and portico we wanted to put the decking over the top of that. Thinking dyna bolting H4 treated timber joists to concrete, deckboards go on timber joists. Is there a water proofing product or barrier or similar that should go between the timber and the concrete to help with moisture? Built Liberty 42 - Handover 26th Feb 2010 forum thread: https://forum.homeone.com.au/viewtopic.php?f=31&t=17243 Re: Decking onto concrete - Waterproofing? 2Jun 17, 2010 8:14 pm The timber will be H3 - smallest size available in H4 is 90 x 70 (solid) so would cost a fortune if using it as joists (its around $11/metre) As lond as water runs off the slab ok its a waste of time/money water-proofing it Re: Decking onto concrete - Waterproofing? 3Jun 22, 2010 6:48 am Pack timbers off the concrete with 10 mm plastic packers, will allow for better drainage, and allow timber to dry out quicker. Landscape Design & Construction http://cherub.squarespace.com/ Hi, as per the subject. Does anyone have any recommendations for the best value decking oil (Bunning is close to where I live) for a treated pine deck? Thanks 0 10974 I have researched this topic in detail recently but for another state which has no licensing requirements at all so any handy man can waterproof any old way and not have… 1 8480 2 8648 |