Description

SIGA Majcoat® 150 and 150 SOB are synthetic building underlays for use under wall claddings.

The products are 3-layered with a functional layer of polypropylene protecting both sides.

Majcoat® 150 and 150 SOB are coloured light-grey on the top face and black on the bottom face.

Scope

Flexible Wall Underlay

SIGA Majcoat® 150 and 150 SOB have been appraised for use as flexible wall underlays for timber and steel-framed buildings within the following scope:

• the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1 with regards to building height and floor plan area; and,
• the scope limitations of NASH Building Envelope Solutions, Paragraph 1.1 for steel-framed buildings; and,
• with direct fixed absorbent and non-absorbent wall claddings; or,
• with absorbent and non-absorbent wall claddings installed over an 18 mm minimum drained cavity; or,
• with masonry veneer in accordance with NZBC Acceptable Solution E2/AS1 for timber-framed buildings or to NASH Building Envelope Solutions Paragraph 1.1 for steel-framed buildings; and,
• situated in NZS 3604 Wind Zones up to and including Very High.

Use over Rigid Wall Underlay

SIGA Majcoat® 150 and 150 SOB have been appraised for use as flexible wall underlays over rigid wall underlays on buildings within the following scope:

• the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1 for timber-framed buildings; and,
• the scope limitations of NASH Building Envelope Solutions, Paragraph 1.1 for steel-framed buildings; and,
• with absorbent and non-absorbent wall claddings installed over an 18 mm minimum drained cavity; and,
• with masonry veneer in accordance with NZBC Acceptable Solution E2/AS1 for timber-framed buildings or NASH Building Envelope Solutions for steel-framed buildings; and,
• situated in NZS 3604 and NASH Standard Part 2 Wind Zones up to and including Extra High.

Specific Design

SIGA Majcoat® 150 and 150 SOB have also been appraised for use on buildings subject to specific weathertightness design. Building designers are responsible for the building design and for the incorporation of SIGA Majcoat® 150 and 150 SOB into their design in accordance with the declared properties and the instructions of SIGA Cover AG.