Keeping Water Out of Decks

Careful detailing of trouble spots ensures longevity

Predictably, our climate causes a lot of water-related problems, making good flashing details paramount to the longevity of decks and the houses they are attached to.


Moisture Management

  • Field-Treating Pressure-Treated Pine

    Even though it's not required by code, it's a good idea to treat all cuts and penetrations in PT pine with copper naphthenate-if you can find it

  • Making Porch Floorboards Last

    During many years as a restoration contractor, I bet I’ve replaced over a mile of rotten porch floorboards. Today’s fast-growth lumber has very little natural resistance to rot, so it’s vital that you completely seal the boards before they’re installed.

  • Landscaping designs and decking without gaps can drastically affect the drying potential of the framing beneath the deck.

    Decay Resistance and the Code

    Using decay-resistant lumber, field-treating cut ends with preservative, and providing adequate airflow are all ways to help prevent wood decks from rotting. But when are they required by code, and when are they a good idea even if not required?

  • Everflashing Ledger Flashing

    Preformed flashing is designed to protect the ledger connection with the house

  • Cofair Products Deck Flash Barrier

    This self-adhering peel-and-stick membrane protects joist tops from moisture damage




All Decking & Railing Articles

  • Durarail Adds Cable Railing

    Authorized Durarail installers are now able to offer a cable railing option for their decks. The company says components snap together, resulting in a minimum of on-site work and few exposed fasteners. Posts and top rails are powder-coated aluminum, and the stainless steel cable comes in three...

  • Tamko Adds Four Railing Colors

    Tamko Building Product has added four new colors to its Marquee Railing System: cappuccino, dark walnut, burgundy wood, and grey. The company said the new colors would complement its EverGrain and EverGrain Envision composite decking lines.

  • Learn More About Treated Wood

    Arch Wood Protection has launched an educational program on treated wood. "Wolmanized Wood University" features videos and printed and online material showing how treated lumber is made, and how it should be used. It includes a number of segments on decks, targeted at professional deck builders.

  • Trex Selected for Big Mideast Project

    Trex composite decking has been selected for what it says will be the longest boardwalk in the United Arab Emirates. It's part of a project to convert an 8.7-mile beachfront in Dubai into a recreational area. Between May and June, Trex delivered more than 32,000 square yards of decking for the...

  • New Porch Flooring Line

    Earlier this year, Eastman Chemical Co. announced it would no longer produce Perennial Wood, its brand of acetylated lumber, but Snavely Forest Products continued to promote and sell its inventory of the product while looking for a new source. Recently, Accsys Technologies and Snavely Forest...

  • Field-Treating Pressure-Treated Pine

    Even though it's not required by code, it's a good idea to treat all cuts and penetrations in PT pine with copper naphthenate-if you can find it

  • Edge Detail for Capped Composite Decking

    A less expensive alternative to installing a picture-frame border to conceal cut decking ends

  • Mountain Laurel Railings

    Custom-made mountain laurel railings add an artistic twist to a deck design

  • Building Waterproof Roof Decks

    Get better performance from your deck covering by using ‘best practices’ framing and flashing details

  • Feeney Lighting for DesignRail

    New LED railing lights fit into recesses in the top and bottom rails

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