Waterproof Decks

Creating a dry area underneath a raised deck

Finding a cost effective way to waterproof the underside of an elevated deck so water doesn’t drip through to the floor below, preventing it from being turned into a useful space, is a major challenge for many homeowners.

There are of course a range of 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.  But the major problem is the cost of these systems. Generally such products require installation by licensed contractors and are not normally a DIY option.

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

Firstly you need to purchase a continuous sheet of EPDM to cover the entire deck area which you then lay on top of your existing deck to provide a durable, long-lasting waterproof membrane. EPDM is available in widths up to about 50′ so you can generally lay down a continuous sheet without any seams. At the wall side, you need to ensure that 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 the EPDM sheet, you simply place our interlocking deck tiles over the top. These tiles 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, even if you don’t have any particular DIY skills.

 

SwifDeck Ipe wood deck tiles

SwifDeck Ipe wood interlocking deck tiles

 

Alternatively you might like to consider the option of laying porcelain pavers over the membrane. These pavers are not interlocking but instead you place low height rubber support pads with inbuilt spacer tabs underneath each corner of the paver. One of the main benefits of porcelain pavers is that they come in an incredible range of colors including wood look, stone look, cement, and modern urban styles, so you can completely change the look of your deck. They are also frost proof, stain resistant, mold and mildew resistance and exceptionally low maintenance.

 

Terracotta porcelain pavers

Terracotta porcelain pavers

 

For further information on 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.