VENTIA BLACK SELF ADHESIVE UNDERLAY 1.5m 75m2

Ventia Iron Black SA Installation Guide

Ventia Iron Black Self-Adhesive Underlay Installation Procedure • Check that the substrate is clean and clear of protrusions such as screws, nails etc, this will not be able to be rectified easily after adhesion. • Ventia Iron Black Self-Adhesive Underlay may be fixed horizontally or vertically. For walls, the product must extend from the upper-side of the top plate to the under-side of the bearers or wall plates supporting ground floor joists, or below bottom plates on concrete slabs. • For horizontal installation, it is recommended that the height for the bottom layer of underlay is marked at regular intervals along the length of the substrate. The first (narrow) release paper is removed and the underlay is adhered to the substrate evenly along the element length. The second release paper is removed and the underlay is smoothed down and along the substrate. • For vertical installation, it is recommended that a vertical line is marked on the rigid substrate. Both release papers are removed from the top down and the underlay adhered to the rigid substrate. • For both installation orientations, care must be taken to avoid wrinkles or folds. Horizontal, vertical and end laps must be no less than 150 mm wide, with the direction of the lap ensuring that water is shed to the outer face of the underlay. After initial application of Ventia Iron Black Self-Adhesive Underlay, it must be smoothed down with a 150 mm wide roller or a folded cloth applying pressure to ensure good adhesion to the substrate and avoiding air bubbles and folds. • For internal and external corners, cut a strip of Ventia Iron Black Self-adhesive Underlay of at least 400 mm in width and adhere it in place with equal lengths on each of the walls. All overlaps must be of a minimum of 150 mm. • The underlay should be run over windows and doors openings and these left covered until the joinery is ready to be installed. Openings are formed in the underlay by cutting on a 45-degree diagonal from each corner of the penetration. The flaps of the cut underlay must be folded inside the opening and adhered to the exposed penetration framing. Excess underlay may be cut off flush with the internal face of the wall frame. Door and window openings top and bottom must be finished with ViBest Super Pro flashing tape and corner molds in the bottom corners of window openings where required. • Any damaged areas of Ventia Iron Black Self-Adhesive Underlay, such as tears, holes or gaps around service penetrations, must be repaired. Damaged areas can be repaired by covering with new material lapping the damaged area by at least 150 mm, or by taping small tears using ViBest Super Pro flashing tape. • Service penetrations, such as electrical cables and pipes, that pass through the Ventia Iron Black must be sealed with Penetration Seals. • If brackets and connections are being attached to the surface of Ventia Iron Black Self Adhesive Wall underlay we recommend that ViBest Super Pro Flashing Tape be applied in patches for additional nail and screw sealing. For installation questions and advice please contact us: EBuilt Ltd 10d Orbit Drive Rosedale Auckland 0632 Ph 09 916 6750 Email: [email protected]