The construction scheme of the exterior wall coating is explained in detail

China Paint Online News Information: Some houses have accumulated years in the wind and rain in the outer wall looks better, but some houses appear to have gone through the vicissitudes of dilapidated, this is mainly the effect of the exterior paint, exterior paint can protect the house with good enough water resistance, weather resistance, stain resistance and freezing and melting resistance, to ensure better decorative effect and durability, so the house's exterior paint construction is very important, "three points paint, seven points."construction program of external wall coating: I, coating detailed construction specifications after inspection has met the construction conditions of the wall, should first eliminate attachments, such as cement mortar particles. Before the construction of professional instruments to measure the wall, water content is less than 10c/o, and p-value is less than 10, to ensure the best effect of paint use. If the ph value can not reach the construction conditions, the use of 1 kg of grass acid with 50 kg of water flushing treatment, in order to meet the construction target requirements. Small cracks and large uneven places, should take appropriate measures to fill, so that the surface of the wall to achieve flat, solid, clean., different grass-roots pre-treatment 1, new cement mortar wall(1) has mortar molymps, with angle grinder flat.(2) If there is a hole, fill it with cement mortar.(3) If there is an empty drum, knock out the cement mortar.(4) if there is a pan-alkali phenomenon, treatment with herbal acid to achieve neutrality.2, mosaic or tile(1) remove empty drums and loose parts.(2) wash surface dust and oil.(3) fill surface holes and brick seams with cement mortar or flat putty.(4) full batch of interface to find flat putty.3, old paint substation(1) to eliminate powdering, shell and soft parts, and clean.(2) fill holes with putty.4, clean the brick wall(1) remove the weathered surface, and clean.(2) first use to find flat putty to fill the brick seams, and then full batch to find flat putty.5, has occurred cracking of the grass first with elastic putty to fill the seams, around the cracks around a batch of elastic putty, and with a batch of knives to crush. After drying, scrape the second elastic putty, elastic putty finished dry, you can carry out the next process.3, the outer wall special putty batch scraping In order to ensure the integrity of the paint effect, the use of the outer wall dedicated to find flat putty, good adhesion, high strength, anti-crack, foaming and other phenomena.With the outer wall dedicated to find flat putty on the wall for the overall scraping, requiring each batch scraping less than 3mm, it is recommended that the thin layer of multi-channel construction, scraping finished, the uneven part of the point repair, uneven and scratched places polished flat, and thoroughly dry, maintenance.1, construction process description with a batch knife in the divided plate along the horizontal direction of a batch of putty, with a scraper along the horizontal direction of force scraping flat, depression place with putty filling repair and then scraping flat. After its watch is dry, then fill up the batch of putty in the vertical direction, and then use another scraper to scrape vertically, if there is a depression, filled with special putty on the outer wall and then scraped vertically. If the leveling degree still below the requirements, repeat the above steps until the requirements are met.2, construction process requirements(1) each batch scraping thickness needs to be less than 3mm.(2) after the completion of the leveling requirements: 2 meters by the ruler check, flatness error is less than 3mm. After construction, it needs to be dried for 24 hours and then smoothed with 400 spaper. The finished surface should be smooth and delicate, with no scratches and no sand marks.3, process flow chart (putty and exterior paint)(1) exterior paint to find flat putty construction process Full batch of one - batch to vertical direction scraping flat - 2 meters by foot check, flatness error<3mm drying, 60-240 s sandpaper polishing, maintenance, and then at least sunny dry day<8> (2) Exterior wall paint construction process grass-roots pre-treatment (grass water content less than 10%, flatness difference less than 3mm) - batch scraping external wall special putty drying, grinding, maintenance, drying, point putty to meet the construction requirements, Point repair, drying, polishing - applying anti-alkali primer or oily closed primer - polishing, maintenance - applying paint - clean the site 4, repair, clean up, acceptance after all the processes are completed, to do the final inspection If there are imperfect, contaminated, damaged places immediately repair, will be protected areas and other clean-up, clean up the site health;
Exterior paint construction related to the life of the house and decorative effect, is a relatively important project, so we should not ignore, the exterior wall paint construction program is introduced to you here, I hope to help you.