Stabilizing Desteriorating Plaster
Zuerst müssen Dach- oder Installationsleckagen repariert werden, um das Problem des Eindringens von Wasser zu beseitigen. Es sollten allgemeine bauliche Reparaturen vorgenommen werden, um die Bewegung des Gebäudes zu stoppen, wodurch die Grundputze geschwächt werden, an denen die ornamentalen Anreicherungen befestigt sind. Die Verformung des Ornamentpflasters sollte korrigiert werden, indem von unten nach unten gestemmt und anschließend wieder verankert wird.
Die Prüfung auf schlechte Haftung der Grundschicht auf Latte oder Ornament auf die Grundierung sollte durchgeführt werden, um einen weiteren Verlust der Anreicherung zu verringern. Adaptive Nutzungseingriffe sollten vorsichtig entfernt werden, um den vorhandenen dekorativen Stuck zu schützen.
Code-erforderliche Feuerlöschsysteme sollten zu diesem Zeitpunkt ausgewertet werden. Moderne Bauvorschriften können Wärme- / Rauch- / Flammendetektoren und automatische Sprinkleranlagen verschiedener Arten und Anwendungen erfordern. Feuerlöschsysteme sowie alle mechanischen Systeme (HLK-, Sanitär- und Elektriksysteme) sollten so ausgelegt sein, dass sie ihren Zweck mit minimalen Auswirkungen auf den dekorativen Putz erfüllen.
Beispielsweise können Rohrleitungen für ein automatisches Sprinklersystem über neue und bestehende Kasset- ten geführt werden, so dass die Sprinklerköpfe in der Kassettendecke kaum aus den Rosettenmitten herausragen. Zugang sollte für zukünftige Systemwartung oder -reparatur bereitgestellt werden.
FAQ - 💬
❓ How do you stabilize crumbling plaster?
👉 Repairing holes and crumbled plaster requires removing the damage and patching empty spaces. Scrape or brush off loose plaster to reveal the lath underneath. Drywall makes a suitable patch for the resulting bare spot, and drywall screws fasten it to the lath. Masking the repair is the same as with a drywall repair.
❓ Can you plaster over crumbling plaster?
👉 If the plaster is very old and damaged, you will need to fix any cracks and holes before plastering over it. You can fill smaller holes and cracks in a wall using a sealant such as Caulk. Larger holes and cracks will have to be filled with plaster and mesh, which may be a job for a professional.
❓ Why is my new plaster crumbling?
👉 Moisture is the single greatest cause of plaster crumbling in the home. You will first notice a fine white powder on the surface of the plaster that is caused when soluble salts move to the surface. Assuming the moisture issue is not dealt with the plaster is, at this point, doomed to crumble.
❓ How do you treat peeling plaster?
👉 Prime the damaged area. Use a paint brush to brush 1 coat of plaster primer onto the peeled area. Let the primer dry for at least 1 hour before you move on to painting it. If you repaired any damaged plaster, make sure to wait at least 3 days and preferably 1 week for it to dry before priming and painting it.
❓ Is there a bonding agent for plaster?
👉 Plaster Bonder is a vinyl acetate homopolymer emulsion used to bond new plaster to any structurally sound interior surface. The bonder is required for applications of plaster over Durock® Brand Cement Board, Fiberock® Abuse-Resistant Gypsum Fiber Panels, and monolithic concrete.
❓ How do you screw into crumbling plaster?
👉 To prevent cracking and crumbling you'll need to pre-drill holes for your screws, and you can start by taping down a strip of blue tape before drilling holes into the wall — it'll help make clean hole without as much crumbling.
❓ Can I skim coat over cracked plaster?
👉 Plaster walls frequently develop a network of hairline cracks that are too narrow to be filled with patching plaster yet cannot be covered with paint. The best way to restore the wall surface is by skim-coating it.
❓ Can you drywall over crumbling plaster?
👉 When faced with old, damaged plaster walls, one technique to dress up the room is to install drywall over the existing plaster. A drywall overlay gives the walls a smooth, fresh surface that's ready for new paint, paper or trim.
❓ What are the three main plaster defects?
👉 9 Types of Defects Observed in Plastering
- Blistering of Plastered Surface.
- Cracks in Plastering.
- Efflorescence on Plastered Surface.
- Flaking.
- Peeling.
- Popping.
- Uneven Plaster Surface.
- Softness of the Plaster.
❓ Can you skim over damaged plaster?
👉 You could always do the former - mix up a small amount of skim and use it to fill all the damaged parts, and level off roughly using your trowel and the surrounding areas as your guide. You'll then have an even level surface to skim over afterwards.
❓ How do you fix plaster delamination?
👉 Delamination: Finish Coat Failure This is called delamination. If this is the case, scrape off the loose finish coat with a putty knife and brush away loose material. Leave any sound material intact. Apply a plaster bonding agent (Plaster-Weld is one brand) over the damaged areas.
❓ Can you use plaster stabilising primer on plaster?
👉 Specially designed to stabilise surfaces prior to applying new plaster, this plasterer’s stabilising primer helps your skim coat to bond well, letting you get the job done quickly and easily. You can apply it to a variety of internal surfaces, including previously plastered walls.
❓ How to fix a rotten/lose plaster?
👉 Plaster patch any deep holes. Id use a course base coat plaster like hardwall or bonding, the finish doesnt need to be perfect just flat. Let it dry as much as possible, pva again and tile away. Anything else is a bodge. There is no magic solution out there that will solidify rotten/lose plaster.
❓ How do you fix plaster that won't stick?
👉 Test plaster by tapping and prodding. Attempt to secure the plaster using stainless-steel screws and large washers. Cut away defective plaster and investigate. Where laths have failed, cut back to studs or joists and replace. Use like-for-like materials to repair any damage.
❓ How do you fix staining on plaster walls?
👉 If staining continues to persist, consider ‘dry lining’ by fixing battens to the wall and applying laths and lime plaster. Often referred to as a ‘scratch’ coat, the first plaster coat creates a reasonably flat surface and is ‘scratched’ in a diamond pattern to provide a key for the next coat.
Autor Des Artikels: Alexander Schulz. Unabhängiger Konstrukteur und technischer Experte. Arbeitserfahrung in der Baubranche seit 1980. Fachkompetenz in den Richtungen: Bau, Architektur, Design, Hausbau.
