Description

Davco K10 Plus, K10 Rapid and Davco K12 are liquid-applied waterproofing membranes for use under ceramic or stone tile finishes on external decks and balconies.

Scope

1.  Davco K10 Plus, K10 Rapid and Davco K12 have been appraised for use as waterproofing membranes for buildings within the following scope:

• the 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 and fibre cement compressed sheet; and,
• with decks that have a maximum size of 40 m2; and,
• situated in NZS 3604 Wind Zones up to, and including, Extra High.

2.  Davco K10 Plus, K10 Rapid and Davco K12 have also been appraised for use as waterproofing membranes 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 10 m 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; and,
• subjected to unrestricted wind pressures (refer to Paragraph 8.1); and,
• with the weathertightness design of all junctions being the subject of specific design by the designer. (Note: The design of these junctions has not been assessed by BRANZ and is outside the scope of this Appraisal.)

3.  This Appraisal is limited to decks and balconies within the following scope:

• constructed to suitable falls (refer to Paragraphs 12.1–12.9); and,
• with the membranes continually protected from exposure to ultraviolet (UV) light and from physical damage by ceramic or stone tile finishes; and,
• with decks and balconies designed and constructed such that deflections do not exceed 1/360th of the span; and,
• with no steps within the deck level, no integral roof gardens and no downpipes discharging directly onto the deck.

4.  Movement and control joints in the substrate must be carried through to the tile finish. The design and construction of the substrate and movement and control joints is specific to each building, and therefore the responsibility of the building designer and building contractor and is outside the scope of this Appraisal.

5.  Ceramic or stone tile finishes are outside the scope of this Appraisal.

6.  The membrane must be installed by Sika Australia Pty Ltd approved and trained applicators.