Waterproof Decks

Creating a dry area underneath a raised deck

Looking for a cost effective way to waterproof the underside of an elevated deck?

Without a doubt, the biggest problem with turning unused areas below elevated decks into useful spaces is finding an economical way of waterproofing the underside so water doesn’t drip through to the space below.

There are of course various under deck ceiling products available where some form of ceiling or channeling system is installed on the underside of the deck to carry water away to the sides.  Generally such products require installation by licensed contractors and are not normally a DIY option.  So the cost can be relatively high.

But there’s another solution that’s not only quick and easy to install, but will generally be much more economical plus give you the opportunity to completely upgrade your deck surface.

Firstly you need to purchase a continuous sheet of EPDM which you then lay on top of your existing deck surface to provide a durable, long-lasting waterproof membrane. EPDM is available in widths up to about 50′ so you can lay down a continuous sheet without any seams over most decks. At the wall side, you need to make sure water cannot run down the wall to the area below.   The best way to do this is to run the EPDM sheet a short distance up the side of the wall as flashing and to use a special EPDM adhesive to provide a good seal between the wall and the EPDM sheet.

After you have laid down the EPDM sheet, you simply lay our interlocking deck tiles over the top. And you don’t need to restrict yourself to just wood tiles. If for example you don’t want the regular maintenance of a traditional wood deck, then you could use slate, granite, sandstone, porcelain or wood composite, all of which can be laid over an existing wood deck.

And the beauty of Architrex deck tiles is that they simply snap together, automatically aligning themselves accurately and precisely, with constant gaps between the tiles. So a typical deck waterproofing job can be completed in just a couple of hours, not days.

For further information on using interlocking deck tiles for creating a waterproof area under an elevated deck or if you have a question about your particular situation, just give us a call on 866 206 8316 or send us an e-mail.