One-Part, High Performance, Elastomeric, Polyurethane Joint Sealant

Product Specification

Emer-Seal PU25

One-part, high performance, elastomeric, polyurethane joint sealant

*1.0

Joint Sealant

1.11

Where so indicated on the drawings, joints are to be sealed using a high performance, one part polyurethane, elastomeric joint sealant. All joints must be prepared, and primed if required, in accordance with the manufacturer’s current technical data sheet.

1.12

Preparation

The joint surfaces must be thoroughly dry and clean. Remove all laitance, curing compounds, form release agents, loose materials and any contaminating foreign matter from joint faces.

If required, place or pressure fit a closed cell, polyethylene backing rod or filler board into the joint to support the internal back of the sealant.

All materials used in conjunction with the new sealant system, shall be approved by the sealant manufacturer.

1.13

Primer

Where required, allow to prime the two substrate joint sides with a substrate suitable, compatible primer.

1.14

The Sealant is to be an elastomeric, waterproof and durable, one component polyurethane sealant. The sealant may be applied in joints between 5mm and 50mm wide. All moving joints should be designed to an optimal width to depth ratio of 2:1, with a minimum joint size of 5mm wide by 8mm deep for porous surfaces or 5mm wide x 5mm deep for non-porous surfaces.

The sealant shall exhibit the following properties:

1.15

Emer-Seal PU25; Expandafoam Backing Rod or Filler Board, from Parchem Construction Supplies meet the performance criteria and are approved for this application.

Parchem Construction SuppliesDocument Date: 09/2009Page 1 of 2

Parchem offers direct assistance with specifications for individual projects; we can visit the site, design office, or arrange a meeting at our branch office. It is recommended that Parchem be consulted early in the design process. For Technical Data Sheets (TDS), Specifications and Method Statements, please visit our website at www.parchem.com.au. * To insert the Specification, Copy and Paste.