Butyl tape is applied to seal all seams.
Deck membrain for gutter.
Dedication to technical excellence and premium design is what makes dec tec vinyl deck membranes an unprecedented product in the vinyl decking market.
The trex rainescape membrane which comes in rolls is fastened loosely to the top edge of deck joists.
And you will a need a metal or plastic gutter at the outer edge of the deck inside the band joist to catch the water from the troughs.
Epdm membrane for the water to drain towards the gutter the epdm membrane has to droop between the joists to create a trough that slopes down the length of the joists to the gutter.
Cd grade ply with minimum cca treatment and minimum 17 mm thick must be used.
The downspouts can be oriented to fit between joists spaced 12 or 16 inches on center.
It doesn t have to look like that.
Screw 2x2s to the joists over the membrane as in the drawing below.
Membrane deck surfaces require a solid substrate as support.
Plywood substrate and timber deck joists must have a maximum moisture content of 20.
A piece of material stapled on the inside of the band joist in each joist bay is also a good idea to protect the band joist from water and to direct water into the gutter.
The underdeck ceiling system can turn the ugly space under your deck into an outdoor haven that s dry bright clean and enjoyable without costly reconstruction.
Sloping the membrane so one end is lower than the other allows the water to flow to a downspout at the end of the joist.
Decking boards are then installed over the top.
Products installed above the joist use a rubberized membrane that drapes down between each joist bay.
Plywood is the most common type of substrate used and must meet the following guidelines.
An under deck gutter system works perfectly as long as the material captures and diverts the water correctly.
A revolutionary under deck drainage system uses a network of troughs and gutters to divert water from the deck shields the area below the deck from rain snow sun and other elements provides 100 protection of the deck substructure from moisture.