Cement based substrates have to be free of cracks, compact, clean, free of grease, oil, laitance and any substances which may compromise the adhesion of NOVABOND FR. On hot and/or windy days saturate well the substrate with water and remove excess with appropriate toll like sponge.
Preparation of the mix:
Mix the content of the 25kg paper bag containing NOVABOND FR (25 kg) with 4,7 - 5,3 liters of clean and fresh water by means of appropriate electrical stirrer at low speed for at least 3 – 4 minutes or construction mixer, until a uniform mortar free of lumps is obtained. The mix has a pot life of 3 hours. During hot periods and in general, it is recommended to avoid direct sunlight exposure of the materials (in powder or liquid form) before use, otherwise the working time is reduced. In any case avoid mixing by hand.
NOVABOND FR is applied by means of metallic trowel or other similar appropriate tool, depending on the type of application. The firebricks must be compact clean without oil, grease, laitance or any substance which may compromise the adhesion of NOVABOND FR on them. Bricks of high porosity is recommended to be slightly wet before application. For joint formation is recommended to use plastic or metallic spacers or guides which can be removed after the adhesive sets and before grouting. If grouting is not done simultaneously with the bonding, in example during repair jobs, application is done by means of a rubber trowel. After grouting clean by means of a sponge soaked in water. The grouted surface should be cured in humid environment at least for a few hours. Firebricks bonded and/or grouted with NOVABOND FR can be exposed to temperatures up to +1.200°C, 7 days after the application.
Avoid using NOVABOND FR:
- In cases where the substrate and environment temperature are less than +5°C or higher than +35°C
- On surfaces like metal, wood or surfaces like polyurethane, epoxy and similar paint or coatings
- On friable or not properly cured substrates
- Over existing expansion joints
Also note the following:
- Never exceed the maximum recommended quantity of mixing water
- Protect the grouted surface from rain and frost for the first 24 hours
- Do not add cement, lime, gypsum or other binders or substances which
- Μay affect the mortar characteristics
- Application should be performed by professional skilled workers
Tools, buckets, tiles etc. can be cleaned with fresh and clean water as long as, NOVABOND FR is still fresh. After hardening occurs, cleaning can take place by mechanical means.
The technical data and recommendations included or listed are the outcome of laboratory measurements combined with our current knowledge and expertise. All information and specifications should in any case be considered as indicative. The Company makes every effort to ensure the accuracy of the information provided herein. Product specifications are subject to change without notice and may differ from product images. Due to printing and application procedures, the colors displayed here should be considered as indicative. In particular, variations in materials, substrates and on-site application conditions are such that no warranty can be given or implied reference to the suitability of the materials for trading or use for a particular purpose and conditions of any given project. Anyone interested in using the product must ensure beforehand that the product is suitable for the intended use and in any case, the user is solely responsible for any outcomes associated with the use of product. Among other things, the Company is not responsible for any normal wear or tear from environmental or any other unsuitable conditions. We reserve the right to revise or change the data herein without prior notice. Restrictions and disclaimers apply to the extent permitted by applicable law. The Company has a Technical Support Department, which has exclusive responsibility for providing technical advice and solutions, addressing relevant issues. Requests to the Technical Support Department are addressed and answered, only in writing. For the latest and valid version of the Technical Data Sheet, the user of the material must refer to our website www.novamix.gr.