Cembrit Permabase May13
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Cembrit PB BUILDING BOARD BASEBOARD FOR EXTERNAL RENDER AND WET AREA TILING

Reinforced, lightweight, water resistant cement board with tapered edges to facilitate invisible butt joint installation. Ideal for use on external applications, such as rendering, brick slips or stone cladding. Suitable as backing board in internal wet areas where ceramic tiles will be used as the decorative finish. 1. Cembrit PB cement board Fixing Cembrit PB to studwork 6 2. Alkali resistant fibreglass Cembrit PB as render backer 7 reinforcing mesh Cembrit PB as a brick slip or stone faced cladding backer 8 3. Polymer modified base coat r~ , nn . , ,, n embedded with mesh Cembrit PB as a...

Product Specication Flat surfaces of the board strengthened with glass mesh Reinforced tapered edges designed for butt jointing Front Rigid cement and aggregate board incorporating polystyrene beads Composition Rigid cement and aggregate board incorporating polystyrene beads. Reinforced tapered edges designed for butt jointing. Flat surfaces of the board strengthened with glass mesh. Appearance Dark grey flat surfaces with grid texture indicating presence of strengthening mesh. Tapered edges with lighter grey cement colour. Installation • Easily cut by scribing and breaking. Cut edges are...

Compatibility When used as a render backer it is important to only use render finishes that have been tested and approved as suitable for use with Cembrit PB. The following renders are suitable for use; K Rend Kilwaughter Chemical Co. Ltd. 9 Starbog Road Larne N. Ireland BT40 2TJ Tel: 028 2826 0766 Fax: 028 2826 0136 www.K-Rend.co.uk Wethertex UK, Wetherby Stone Ltd. Bleakhill Way Mansfield Nottinghamshire NG18 5EZ. Tel: +44 (1)623 633833 Fax: +44 (1)623 635551 www.wethertex.co.uk Product Specification Dimensions Pallet quantity Permarend Permarock Products Ltd. Jubilee Drive Loughborough...

Installation - general principles Installed over sheathing board scribed with hand tools and snapped. Fixed with stainless steel or corrosion resistant nails or screws. Fixing Cembrit PB to studwork Maximum 400mm centres. Steelwork should be 20 gauge (or heavier) galvanized steel. Stagger boards on successive courses. Weatherproof membrane must be used on external applications to protect sheathing board. Fixings – Do not use conventional plasterboard, nails, jointing tape or jointing compound. For timber studwork 37.5mm stainless steel or corrosion resistant screws or PB corrosion resistant...

Render backer Unique reinforced chamfered edge for accurate butt jointing and better quality surface finish. In external applications strength and stability are necessary to avoid impact damage and cracking of the decorative coating. Used in conjunction with sheathing board, incorporating reinforcing mesh embedded in the base coat, this system will provide a uniform joint free appearance in any number of coloured and textured finishes with excellent impact and weather resistance. Dimensional stability and rigidity are crucial to avoid cracking and delamination of the exterior finish. The...

Brick slip or stone faced cladding backer Low water absorbtion, high production tolerances and dimensional stability make a solid base for rigid facings. Such claddings require consistently flat surfaces for durable bonds. Cembrit PB complies with ASTM C 1325. Used in conjunction with sheathing board and coated with a water resistant barrier Cembrit PB low water absorbtion means that the polymer modified adhesive mortar will provide good adhesion with stone faced or ceramic decorative cladding. Flexural strength = 750 psi. 1. Internal wall 2. Vertical stud work 2. Vertical stud work 4....

Fire rated walls Building elements combining Cembrit PB with mineral wool insulation and plasterboard will achieve 1 or 2 hour fire rated walls or ceilings. Cembrit PB has been tested and approved in a variety of assemblies for both 1 hour and 2 hour rated walls. Cembrit PB is a class 0 rated board, tested to BS 476 parts 6 & 7. When used in steel stud partition walls Cembrit PB is incorporated in a system with fire shield wallboards and mineral fibre insulation. When used in timber stud partition walls Cembrit PB is incorporated in assemblies with fire shield wallboards and either ceramic...

Tilebacker Resistance to moisture and mould growth makes for a durable and stable support for ceramic tiles. Of crucial importance in wet areas is the ability to resist water absorbtion and mould growth. Water absorbtion by weight in % over 24 hours is less than 8%. Use Cembrit PB in conjunction with sheathing/ lining board. Butt edges, but do not force together. Joints – Treat joint with latex-cement mortar or dry set(thin set) mortar. Use PB mesh tape on all edges and cuts. 50mm wide. Stagger end joints in successive courses. Fix PB board at 200mm centres (150mm for ceilings). Commence...

Protect from the elements particularly moisture, store undercover in a well ventilated building. Store panels flat and off ground on bearers. Support centres and ends of panels without sagging. Do not stack more than 8 pallets high. 2 people should lift rather than slide panels from stack. 2 people should carry on edge (rather than flat) to avoid sagging. Cembrit Ltd. offers various qualities of building board including Cempanel a class “0” cement particle board used as a sheathing (inner leaf of external wall) board. Cembrit SP is a swimming pool grade building board and can be used as a...

The information contained in this publication and otherwise supplied to users of the company’s products is based on the company’s general experience, best knowledge and belief. However, because of factors beyond the company’s knowledge and control, which can affect the use of the products, no warranty is given or implied with respect to such information. The company’s policy is one of continuous improvement. Cembrit Limited therefore reserves the right to alter specifications at any time and without notice. As with all manufactured materials, appearance of Cembrit PB may vary according to...