Warning: include(http://klahost.com/floating-banner/melbourne.php): failed to open stream: HTTP request failed! HTTP/1.1 404 Not Found
in /home/commerc2/public_html/wp-content/themes/admired/header.php on line 69
Warning: include(): Failed opening 'http://klahost.com/floating-banner/melbourne.php' for inclusion (include_path='.:/opt/php54/lib/php') in /home/commerc2/public_html/wp-content/themes/admired/header.php on line 69
Bostik Adhesive: ‘No more nails’ (See page 11 of NRG Specification Guide).
NRG Greenboard Polymer Modified Render
1st Coat application, together with NRG Fibreglass Mesh.
2nd Coat application.
NRG Acrylic Texture.
– 3rd Coat (Flat plastic float finish).
– Apply as final acrylic coating, over polymer modified render.
– Minimum cure time 48hrs, before paint applied finishes.
– NRG Sunhoods.
– Post render, x 2 Coats.
– Pre-paint application.
Select UV Stablised product, made to adhere to cementuous based material.
a simple but effective method of fixing Greenboard to masonry surfaces.
Hilti IDP Polypropylene Anchors
Hilti IDP Anchors Maximum Fixing Centers
Refer:- iv) above for spacing details
NRG EPS Battens
NRG 75 CR (Cavity Release)
NRG 35 x 25 x 1240mm Batten.
Fixing: (Timber) 40mm Galv. clout.
Fixing: (Steel) 40mm Drill Point screw.
(See ‘NRG 75 CR‘ section details).
Reveal Bead 40mm – 60mm – 75mm
Base edge of cladding.
Available in 3.5mm and 6mm render systems at 3m lengths.
Expansion Joint Bead
– Horizontal control joints.
– Vertical control joints.
– Sunhood drip groove.
Available in 3.5mm and 6mm render systems at 3m lengths.
Bostik PVC Primer 5077
PIVOTAL STEP: Adhesion of polyurethane UV stablised sealant, to all window/door joinery, relies heavily on this procedure. Failure to impliment this primer, prior to sealing, will result in inferior trade practice. Resulting in possible polyurethane breakdown. (See page 11 of NRG Specification Guide)
The proprietary coating systems consist of polymer-modified cement renders, which must be finished with an acrylic texture and paint. The proprietary coating manufacturer’s instructions and application requirements must be followed at all times. *(Available to download from the QT website) In most cases these coating systems must be applied by an approved applicator. High profile or heavy texture finishes can minimise surface imperfections or glancing light concerns. Light coloured coatings are recommended. Polymer-modified cement renders must not be applied over sealants or control joints.
Pre – Coating System Inspection
Check all internal and external corners are formed correctly and have good straight lines. Check the first horizontal course, and panels above rooflines have a good clean bottom line. Check weep holes have been installed in the first horizontal course. With a 1.8m spirit level check for variations greater than 3mm in the QT EcoSeries Wall Panels, especially where panels butt together. If variations are found, take the appropriate remedial action eg. rasp to an acceptable level, or re-fix the offending panels. It is important to eliminate large variations, as they may appear under critical or glancing light conditions. If the internal lining has not yet been installed, advise the building supervisor that internal wall lining cannot be installed using nails as the knocking vibrations will transfer through the frame and crack the render coatings (hairline cracking). Hence internal lining must be screwed. After the inspection has been completed, application of the base coat can begin.
Application of a Polymer Modified Render Base Coat.
Trowel an even coat of polymer-modified cement render over the entire QT® EcoSeries Wall Panel, embed QT® FullMesh into the wet Render, overlapping joints by 100mm minimum. Allow to firm and then screed and or float to a flat and level finish. The purpose of this coat is to even out the substrate and the porosity of the QT® EcoSeries Wall Panel. 150mm wide x 300mm long strips of QT® 45° Mesh are also required to be set into the base coat at 45° angle across the corner of all windows and door openings into wet render. Do not render or texture over control joints. The above is a generic guide only. Refer to the proprietary coating manufacturer’s instructions for a detailed description of application. Any proprietary coating system specified must meet or exceed the performance criteria of the BCA.
Care should be exercised in handling the QT®EcoSeries Wall Panels to avoid any damage to edges, ends and faces. Panels must be stacked flat, off the ground and supported on a level platform. Plastic Shrinkwrap applied to pallets of panels for transportation from the factory, must be removed at the destination (i.e. distributors warehouse or direct to site) to allow panel to continue drying and equalise with local humidity. The panels must be kept dry at all times by storing under cover, or providing weatherproof covers to the stack. Panels must be dry prior to fixing. Intermittent weather exposure is not detrimental to the panel. However if QT®EcoSeries Wall Panels become wet, allow thorough drying before fixing. Drying shrinkage may occur if the QT®EcoSeries Wall Panels are not allowed to dry sufficiently. The proprietary Coating System must be applied and completed within 1 month from the date of installation of the TEcoSeries Wall Panels.
QT®EcoSeries Wall Panels and cement based renders, will release their salts and/or fines if saturated; this condition is know as efflorescence. In order to prevent efflorescence the cement products must be sealed to prevent the ingress of moisture and/or installed with careful attention to the weather-tightness details to prevent the ingress of wind driven rain, gutter overflow or moisture tracking along a surface with capillary action. The water that has permeated through the panel and render will collect and dissolve any salts and/or fines that are then released through hairline cracking in the render which are caused by hydrostatic pressure build up. The dissolved salts and/or fines will crystallise on the external surface. Should efflorescence occur, it is essential that the moisture source be eliminated and any hairline cracking repaired to maintain weathertightness. Refer to coating manufacturer for suitable surface repair techniques.
Panels must always be carried on edge. Any minor damage should be repaired with joint compounds or polyurethane foam. Fixings and other accessories must be stored so that they are kept clean, dry and undamaged. All components must be used within the designated shelf life. Any damage to Clips and Channel may affect the integrity or performance of the wall system. Panel may be cut with an electric circular saw 60 pt tungsten tip blade, diamond blade or handsaw. Panels are best shaped with the use of an electric plane or a handrasping tool. Holes or services may be formed with the use of an electric fretsaw or drill. When power tools are used for cutting, grinding or forming.