Increase Useable Space in Medium Density Builds with Rooftop Decking

With New Zealand’s continued growth in medium-density housing (MDH), it’s essential that outdoor living areas are still included in designs.

Despite medium-density housing easing pressure on land-supply when measured on a ‘per-dwelling’ basis, it still reduces the space for tranquil, green spaces at street level. This is why, with a bit of creativity and careful planning, it can open the door for scenic common areas above carparks and buildings. With a strong and durable substrate and an attractive waterproof decking surface, designers can create a recreational space from an otherwise redundant one.

Viking Dec-K-ing offers a simple and hard-wearing slip-resistant waterproofing membrane, providing the ultimate underfoot finish. It is a PVC membrane reinforced with a polyester mesh scrim inherent in the sheet to provide latitudinal strength and puncture resistance.

Despite Dec-k-ing being installed mostly in residential situations, it is increasingly being specified for multi-level apartment complexes, retirement and nursing villages, childcare and other institutional facilities such as schools, in order to provide an extra multi-purpose space.

Construction materials are only as effective as the standard to which they’re applied. Accordingly, Viking Dec-K-ing membrane is only installed by members of Viking Roofspec’s licensed applicator network who are trained at Viking’s exclusive licensing school and use their experience to ensure a craftsman-like finish.

Viking Dec-King comes with a 20-year product warranty. It is a BRANZ-appraised, all-in-one system that is available in five finishes ranging from the exposed aggregate concrete-like look of 'Sand Pebble' to the earthy granite look of ‘Baltic’.

Dec-K-ing (PVC) Waterproofing Membrane

Viking Roofspec

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Viking Dec-K-ing is a hard-wearing, aesthetic waterproofing membrane, providing the ultimate underfoot finish and waterproofing for decks above living areas.

NZ-Owned Business

Viking Dec-K-ing PVC Waterproofing Membrane has been appraised for use as a waterproofing membrane for buildings within the following scope:

on pedestrian decks and balconies; and,
scope limitations of NZBC Acceptable Solution E2/AS1, paragraph 1.1; and,
with timber supporting structures designed and constructed in accordance with the NZBC; and,
with substrates of plywood sheet and compressed fibre cement sheet.

Viking Dec-K-ing PVC Waterproofing Membrane has also been appraised for use as a waterproofing membrane for external reinforced concrete pedestrian decks and balconies for buildings within the following scope:

up to 3 storeys with a maximum height from ground to eaves of 10m and with a floor plan area limited only by seismic and structural control joints; and,
with the reinforced concrete structure designed and constructed in accordance with the NZBC.

This appraisal is limited to pedestrian decks and balconies within the following scope:

constructed to suitable falls (refer paragraphs 12.1 - 12.9 of the Viking Dec-K-ing BRANZ Appraisal); and,
with no steps within the deck level, no integral roof gardens and no down pipe discharging directly onto the deck.

The design and construction of the substrate and movement and control joints are specific to each building, and are therefore the responsibility of the building designer and building contractor, and are outside the scope of this appraisal.

Clause B1 STRUCTURE: Performance B1.3.1 and B1.3.2. Viking Dec-K-ing PVC Waterproofing Membrane meets this requirement.
Clause B2 DURABILITY: Performance B2.3.1 (b), 15 years. Viking Dec-K-ing PVC Waterproofing Membrane meets this requirement. See paragraph 9.1 of the Viking Dec-K-ing BRANZ Appraisal.
Clause D1 ACCESS ROUTES: Performance D1.3.3 (d). Viking Dec-K-ing PVC Waterproofing Membrane meets this requirement. See paragraph 7.6 of the Viking Dec-K-ing BRANZ Appraisal.
Clause E2 EXTERNAL MOISTURE: Performance E2.3.1 and E2.3.2. Decks and balconies incorporating Viking Dec-K-ing PVC Waterproofing Membrane meet these requirements. See paragraphs 12.1 - 12.8 of the Viking Dec-K-ing BRANZ Appraisal.
Clause F2 HAZARDOUS BUILDING MATERIALS: Performance F2.3.1. Viking Dec-K-ing PVC Waterproofing Membrane meets this requirement and will not present a health hazard to people.

BRANZ Appraised

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