Decking boards are then installed over the top.
Under deck drainage between joists.
Adaptable to multiple sizes and shapes.
These products capture water and divert it to a gutter at the deck beam or the outer band joist leaving the space below the deck dry and available to use either as outdoor living space or for storage.
If all this sounds like too much to jury rig you can use a manufactured system with all the parts pre cut and designed to work as a system.
Installing an under deck drainage system can solve this problem.
Installs to the bottom of deck joists.
Flexible durable and long lasting.
Judging by the number of manufacturers who are now offering them under deck drainage systems have become a very popular upgrade.
Azek and dryspace inc.
Easily attaches to new or existing deck joists to protect your under deck outdoor space from moisture mold and mildew damage.
As with ceiling systems the spaces between the joists are exposed to the elements which your electrician needs to keep in mind.
Epdm rubber panels from dek drain 5 to 6 per sq.
The trex rainescape system is designed to be installed between deck joists spaced on 16 inch centers.
The trex rainescape membrane which comes in rolls is fastened loosely to the top edge of deck joists.
Adding the gutter and a ceiling to conceal the drainage system is up to you.
Butyl tape is applied to seal all seams.
The best option is to install the system above the joists.
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Dek drain s topside system drapes strips of rubberized sheeting epdm between deck joists to direct water into a gutter at the band joist.
Photo courtesy of dek drain.
The under deck drainage systems can be divided into three basic categories.
Easy to install with detailed instructions for your specific under deck drainage project.
The anchor point to the deck frame for dryspace s extruded vinyl under deck system is a series of brackets.
Above joists system different deck drainage systems can be installed either above or below the joists.
Ft drape between the lower edges of deck joists to form sloped water diverting troughs that resist heat wind fire and uv rays.
Waterproof sheets that fit over the joists before the decking goes down systems that affix to furring strips below the.
The downspouts can be oriented to fit between joists spaced 12 or 16 inches on center.
This will provide 100 protection of all the joists and beams from moisture penetration.