How to use exterior wall putty powder
The external wall putty powder is based on inorganic binder materials as the base material, together with the bonding material and other additives finely processed. Its outstanding characteristics are high bond strength, water resistance, alkali resistance, and good construction performance. It can be used as a leveling material for outdoor building surfaces once and for all. Avoid cracking, blistering, pulverization or shedding. The following Xiaobian introduces the use of exterior wall putty powder and the characteristics of exterior wall putty powder.
Use of external wall putty powder
Dosage: Theoretical consumption value: 1-1.5 kg/m2 (thickness of putty 1 mm).
Stirring: The amount of water added is based on the construction consistency. Stir the mixture well and let it stand for 10 minutes. Stir before use (hint: Putty powder should not be mixed with poor white latex to avoid adverse reactions).
Surface treatment: The surface of the wall is smooth or a new type of building material, such as gypsum wall board, polystyrene board, gypsum board, etc., need to use interface agent.
Leveling: Due to the high strength of the putty, it should be leveled with a squeegee when the putty is in a semi-dry state (softly pressed by hand without deformation).
Storage: Store in a cool, dry place with a shelf life of 12 months.
The characteristics of exterior wall putty powder
1. Good workability, easy to draw, easy to flatten, wipe back without wiping, no lint, and polishable after curing.
2, strong bonding force, to ensure a solid bond with the base surface, not hollowing out, do not peel off.
3, good water resistance, long exposure to water, no foaming, no chalking.
4. The better alkali resistance has stronger adaptability to the alkalinity of the cement mortar and the concrete new wall base layer.
5, can not be powdered scraping After the putty layer curing does not appear powdering phenomenon.
6, to meet the special functional requirements such as high flexibility, the old tiles renovation treatment (direct coating on the tile surface construction) metal paint construction of the primary treatment.
Construction process of wall putty
1, construction preparation
Construction tool preparation: The construction blade, scraper, and sandpaper are ready for use.
Material Preparation: Check the quality of the construction putty, whether there is agglomeration, mildew, etc. If the powdery putty should be in accordance with the specification ratio, add water and stir evenly and stand still.
Grassroots inspection: Whether the surface of the construction base is firm, whether there are cracks or empty drums, whether there is pollution from the stolen material, and deal with it accordingly.
2, grassroots processing
Clean up stolen goods and contaminants.
Partially leveled. Fill the pits, level out the protrusions, and apply scraping or grinding to the honeycomb or matte.
The degree of dry grass. The grassroots should carry out necessary conservation, not too moist, but it should not be too dry.
3, scraping putty
If the base layer is too dry or has strong water absorption, it is best to use a sealing primer to seal it, otherwise it will affect the adhesion of the putty.
Lots of scrapings should be applied using a trowel, from top to bottom or from right to left, with a knife and the base surface scraped at a 30% angle. Every time putty can not be scraped too thick, too thick and easy to produce cracks, fall off and other ills. Usually wall putty is about 0.5~1.0mm.
PuTTY is usually scraped twice. The interval between putty and two times should not be too short. After the first putty is dried, the second putty must be scraped.
When scraping putty, do not apply too much to and from the scraper, so as to avoid rolling, peeling or squeezing out the rubber in the putty, and the sealed surface is not easy to dry.
When scraping putty, pay attention to the technique, fill it up, fill it up, put the putty around it, and make the traces of putty as few as possible.
4, putty polishing
The putty base is dried and sanded. The thickness of the sandpaper is determined according to the type of putty. The coarse sandpaper is used to polish the hard putty and clean the base layer. The medium sandpaper is used to polish the common putty and the fine sandpaper is used to polish the smooth putty.
Grinding putty is usually wrapped in sandpaper sanding pad, reciprocating force to push pad, can not only use one or two fingers pressing sandpaper grinding, so as not to affect the smoothness of the grinding.
Check the flatness of the base layer, there should be no significant scratches, no rough feeling, smooth surface is qualified. The old wall surface should first remove the original loose base layer, remove the floating ash, and the application detergent that cannot be removed will completely clean the interface. After the strong surface has been cleaned up, press the putty's construction method again.
Editor's summary: The use of exterior wall putty powder and the characteristics of exterior wall putty powder are introduced here, and I hope to be helpful to everyone. If you want to know more about yourself, you can follow the information on this site.
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