Deck Repairs & Waterproofing

We have repaired more than 250 leaky decks over the last 20 years.

That experience means we know what to look for and how to scope an appropriate remedial solution. Unfortunately, there are no short-cuts when it comes to repairing leaky decks and/or replacing aging waterproofing membranes. 

Most of the leaking decks we have repaired were typically constructed in the 1990’s to late 2000’s when poor design, detailing and installation methodologies were prevalent. There have been a lot of lessons learned about deck design and detailing since that period and we have incorporated those learnings into our remedial solutions.

Typical defects and/or high-risk details include:

• Waterproofing membrane failure (failed glued membrane joints or membrane deterioration)
• Lack of fall to encourage water run-off to drainage outlets
• Poorly designed drainage outlets / membrane terminations
• Lack of upstand for the waterproofing membrane under joinery units
• Waterproofing membranes not taken under the ranchslider units.
• Plaster cladding hard down onto the deck surface allowing moisture wicking
• Undersized drainage outlets and/or no overflows
• Flat top plastered handrails without a proper waterproofing detail
• Lack of saddle flashings at the balustrade and wall junction.

Typically, we strip decks back to the underlying joist structure and re-detail the deck by installing a new substrate and waterproofing membrane to the current building code  and membrane manufacturer’s requirements. Design improvements to resolve higher-risk details are critical to the long-term performance of the repair solution.

With extensive experience remediating leaking decks, we know the options to resolve problematic details and offer our clients the benefit of our expertise to ensure the right outcome. 

If you have a leaking deck or wish to replace your deck membrane before it starts leaking, call us on (09) 479 8901 or visit us at our office / showroom at 19A Triton Drive, Albany.