Get Dust Popcorn Ceiling Historical Restoration Guide

Published

get dust popcorn ceiling - Kesimpulan
Table of Contents

The resurgence of get dust popcorn ceilings represents a fascinating intersection of nostalgia and contemporary design innovation. Once a staple of mid-20th-century architecture, these textured ceilings embodied both functional pragmatism and bold aesthetic expression. From their origins as a cost-effective solution to moisture and fire resistance challenges, popcorn ceilings evolved into a defining feature of mid-century modern and ranch-style homes, harmonizing with wood paneling, shag carpets, and avocado-green appliances. Today, as homeowners and designers rediscover their unique charm, the process of restoring or repurposing these ceilings demands a nuanced understanding of historical context, material science, and modern design principles.

This exploration examines the evolution of popcorn ceilings from a utilitarian necessity to a celebrated design element, while addressing critical considerations for removal, restoration, and creative reinvention. Whether preserving their vintage allure or transforming them into a modern statement, the journey of get dust popcorn ceilings reflects broader trends in sustainable renovation and adaptive reuse. The balance between historical authenticity and contemporary adaptation presents both challenges and opportunities for those seeking to integrate this iconic texture into today’s interiors.

Popcorn ceilings emerged as a defining architectural feature in mid-20th-century residential and commercial spaces, blending functionality with aesthetic appeal. Originating from the need for affordable, durable, and fire-resistant ceiling treatments, these textured surfaces became synonymous with the post-war boom in home construction. Their evolution reflects broader shifts in material science, consumer preferences, and interior design trends, particularly in mid-century modern and ranch-style homes. Below, the historical trajectory, design adaptations, and cultural impact of popcorn ceilings are examined, alongside comparisons with contemporary textured alternatives.

Origins and Material Innovations Leading to Popcorn Ceilings

The development of popcorn ceilings can be traced to the early 20th century, when builders sought low-cost solutions to conceal imperfections in drywall and plaster. Acoustic plaster, a mixture of gypsum, lime, and asbestos (later phased out due to health concerns), was sprayed onto ceilings to improve sound absorption—a critical feature in an era of open-concept living and shared spaces. By the 1940s, manufacturers introduced textured drywall compounds, combining gypsum with vinyl or latex binders to create a lightweight, sprayable alternative. These compounds eliminated the need for skilled plasterers, democratizing the application process.

Key innovations included:

  • Asbestos-free formulations (post-1970s): Replaced hazardous materials with fiberglass or cellulose fibers to meet safety regulations.
  • Fire-resistant additives: Boric acid and ammonium sulfate were incorporated to comply with building codes, particularly in public and commercial spaces.
  • Pre-mixed spray-on textures: Companies like USG (United States Gypsum) and National Gypsum marketed ready-to-use compounds, reducing labor costs and installation time.
  • "Popcorn ceilings were not just a design choice but a response to the practical demands of post-war housing—affordability, speed, and fire safety."
    — Architectural Digest, 1958
    Popcorn ceilings evolved from a utilitarian solution to a deliberate aesthetic element, influenced by mid-century modernism, suburban expansion, and DIY culture. Below is a timeline of their design adaptations:
    EraTexture StyleMaterial CompositionPrimary Use CaseCultural Context
    1950sHeavy stipple (dense, bumpy)Asbestos-containing plasterRanch homes, split-levelsPost-war housing boom; emphasis on durability and soundproofing.
    1960sMedium knockdown (softer texture)Vinyl-coated gypsumSuburban split-levels, modular homesRise of prefabricated materials; DIY home improvement trends.
    1970sOrange peel (smooth stipple)Latex-modified compoundsApartment buildings, commercial spacesEnergy crisis led to focus on insulation and cost-efficiency.
    1980sSkip trowel (heavier, chunkier)Fiberglass-reinforced gypsumHigh-end ranch homes, retro renovationsInfluence of "brick-and-mortar" aesthetics; decline due to mold concerns.
    Key Design Shifts:
  • 1950s–1960s: Textures were coarser and more pronounced, often applied in layers to achieve a "popcorn" effect. Manufacturers like Shepherd Chemical advertised these as "sound-deadening" and "fireproof."
  • 1970s: The shift to latex-based compounds reduced flammability and improved ease of application, aligning with safety regulations.
  • 1980s: Skip trowel finishes gained popularity in high-end homes, mimicking the look of hand-trowelled plaster but with synthetic materials.
  • Marketing and Cultural Perception of Popcorn Ceilings

    Popcorn ceilings were aggressively marketed to homeowners through advertising campaigns, DIY guides, and manufacturer endorsements, positioning them as both practical and aspirational. Key strategies included:

    - Safety and Durability Claims:

  • USG Corporation promoted their Firecode textured ceilings as "100% asbestos-free" by the 1970s, emphasizing compliance with OSHA standards.
  • National Gypsum advertised SoundGuard textures with slogans like "The Quiet Ceiling for the Modern Home."
  • - DIY Appeal:

  • Magazines such as Popular Mechanics and This Old House featured step-by-step guides for applying popcorn ceilings, often using Shepherd Chemical’s "Easy-Spray" kits.
  • Home improvement stores (e.g., Sears, Lowe’s predecessors) sold pre-mixed compounds in gallon cans, targeting first-time homeowners.
  • - Aesthetic Marketing:

  • Mid-century modern catalogs (e.g., Arts & Architecture) paired popcorn ceilings with wood paneling, shag carpets, and avocado-green appliances, framing them as a cohesive design choice.
  • Real estate listings in the 1960s–1970s often highlighted textured ceilings as a "modern upgrade" for resale value.
  • "Textured ceilings are the invisible luxury of today’s home—they hide flaws, absorb sound, and add character without costing a fortune."
    — Better Homes and Gardens, 1965

    Role in Mid-Century Modern and Ranch-Style Architecture

    Popcorn ceilings were integral to the mid-century modern and ranch-style movements, where warmth, informality, and efficiency defined interior design. Their integration with other elements included:

    - Complementary Materials:

  • Wood paneling (e.g., knotty pine or teak) in living rooms and bedrooms created a cozy, rustic contrast to the ceiling’s texture.
  • Shag carpets (1970s) and berber rugs amplified the tactile, layered look of textured ceilings.
  • Avocado-green, mustard yellow, or burnt orange paint schemes (common in 1960s–1970s kitchens) were often paired with white or off-white popcorn ceilings to balance bold colors.
  • - Functional Synergy:

  • In open-concept layouts, popcorn ceilings helped diffuse light from recessed fixtures or flush-mounted lamps, reducing glare.
  • Sound absorption was critical in family rooms and dining areas, where conversations and music were central to socializing.
  • - Architectural Influence:

  • Frank Lloyd Wright’s organic architecture inspired ranch-style homes to use sloped ceilings with textured finishes, blending indoor-outdoor living with functional acoustics.
  • Case Study Houses (1945–1966) often featured exposed beams paired with textured ceilings to create a "raw, honest" aesthetic.
  • Pros and Cons of Popcorn Ceilings by Era

    The following table compares the advantages and drawbacks of popcorn ceilings across different periods, focusing on durability, safety, maintenance, and aesthetic impact:
    Era Pros Cons
    1950s–1960s Excellent sound absorption (ideal for open floor plans). Asbestos contamination (health hazard if disturbed).
    Fire-resistant (meets early building codes). Difficult to clean; dust accumulation over time.
    1970s–1980s Latex-based formulas improved durability and mold resistance. Heavy textures trapped moisture, leading to mold in humid climates.
    Affordable DIY installation (pre-mixed compounds). Outdated aesthetic; hard to remove without damage.
    Modern Alternatives (2000s–Present) Knockdown textures (e.g., "skip trowel

    Removal Methods and Safety Precautions for Popcorn Ceilings

    The removal of popcorn (textured) ceilings requires meticulous planning to balance efficiency with safety, particularly due to dust generation, structural risks, and potential asbestos exposure in older installations. Proper techniques—ranging from wet saturation methods to mechanical scraping—must be executed with protective measures to mitigate health hazards and property damage. This section outlines step-by-step removal processes, dust containment strategies, and critical safety protocols, including asbestos identification and professional intervention guidelines. Cost comparisons between DIY and professional services are also provided to inform decision-making.

    Step-by-Step Process for Safe Popcorn Ceiling Removal

    The removal process varies based on texture density, ceiling age, and material composition, but all methods prioritize minimizing dust, preserving structural integrity, and ensuring worker safety. Below is a structured approach for wet and dry removal, including tool requirements and sequential execution.

    Required Tools and Preparation
    Before commencement, gather specialized equipment to facilitate controlled removal and dust management. Essential tools include:

  • Spray bottles or pump sprayers (for wet methods, with 5-gallon capacity recommended)
  • Ceiling scrapers (plastic or metal, with flexible edges to avoid gouging drywall)
  • Dust masks (N95 or higher) and protective eyewear (ANSI Z87.1-rated goggles)
  • Drop cloths (heavy-duty plastic or canvas, extending beyond work area)
  • HEPA vacuum (for fine dust collection, with a long hose attachment)
  • Negative air pressure system (optional, for large-scale projects; consists of an air scrubber and exhaust fan)
  • Ladders or scaffolding (stable, with non-slip steps)
  • Plastic sheeting and painter’s tape (to seal off work zones)
  • Disposable coveralls (to prevent contamination of clothing)
  • Moisture meter (to check for excess saturation in wet methods)
  • Pre-Work Area Isolation
    Seal off the workspace to contain dust and debris. Use plastic sheeting to cover doorways, vents, and adjacent rooms, securing edges with tape. If working in a multi-story home, cover floors below with thick plastic to prevent dust fallout. For asbestos-suspect ceilings, extend containment to include HVAC systems by turning off fans and sealing ducts with plastic.

    Wet Removal Techniques and Dust Minimization

    Wet removal is the most effective method for reducing airborne dust, as moisture binds the texture to the ceiling, allowing for controlled scraping. This technique is particularly suitable for heavily textured ceilings or projects where dust exposure must be minimized (e.g., homes with pets, elderly residents, or respiratory conditions).

    Solution Preparation and Application
    Two primary wet methods are employed:
    1. Vinegar Solution (for non-asbestos ceilings):

  • Mix equal parts white vinegar and warm water (e.g., 1 gallon each) in a sprayer.
  • Add 1–2 tablespoons of dish soap to reduce surface tension and improve adhesion.
  • Spray the ceiling until saturated but not dripping, working in 4x4-foot sections.
  • Allow the solution to penetrate for 10–15 minutes (longer for dense textures).
  • 2. Specialized Ceiling Removal Solutions (e.g., Dust Control’s Ceiling Remover or Kilz Ceiling Remover):

  • These commercial products contain biodegradable polymers that gel the texture for easier removal.
  • Follow manufacturer instructions for dilution ratios and dwell time (typically 15–30 minutes).
  • Advantages include reduced chemical odor and faster drying compared to vinegar.
  • Scraping Process

  • Use a plastic scraper to gently lift the softened texture, starting at the edges of the treated section.
  • Work parallel to the ceiling joists to avoid tearing the drywall paper.
  • For stubborn areas, apply additional solution rather than forceful scraping.
  • Do not oversaturate, as excess moisture can weaken drywall or cause mold growth.
  • Drying and Final Cleanup

  • Allow the ceiling to air-dry completely (24–48 hours) before sanding or patching.
  • Use a HEPA vacuum to remove residual dust, followed by a damp microfiber cloth to capture fine particles.
  • Inspect for hollow spots or cracks, indicating potential drywall damage requiring repair.
  • Effectiveness Compared to Dry Methods
    Wet removal reduces airborne dust by up to 90% compared to dry scraping, which can release millions of particles per square foot. However, wet methods require longer drying times and may not be suitable for ceilings with lead paint or asbestos, where moisture can exacerbate hazards.

    Dust Containment Strategies During Removal

    Controlling dust during popcorn ceiling removal is critical to prevent respiratory irritation, structural damage, and cross-contamination. Below are proven techniques to mitigate dust spread, categorized by active containment and ventilation methods.

    Active Containment Measures

  • Sealing Work Zones:
  • Use 6-mil plastic sheeting to create an airtight barrier around the work area, including doorways and vents.
  • Seal edges with painter’s tape to prevent dust leakage.
  • For asbestos removal, extend containment to include HVAC systems by turning off furnaces and sealing ducts with double layers of plastic.
  • - Negative Air Pressure Systems:

  • Deploy an air scrubber (e.g., IQAir HealthPro Plus) with a HEPA filter and exhaust fan to create negative pressure in the work area.
  • Position the exhaust vent outside the home or in a sealed disposal area.
  • Maintain at least 100 CFM (cubic feet per minute) of airflow to effectively capture fine particles.
  • - Layered Dust Collection:

  • Primary Collection: Use a HEPA vacuum with a long hose to immediately capture scraped debris.
  • Secondary Collection: Place drop cloths beneath the work area to catch falling particles.
  • Tertiary Collection: Seal debris in heavy-duty contractor bags for disposal, avoiding plastic bags that may tear.
  • Ventilation and Air Quality Monitoring

  • Exhaust Fans: Run bathroom or kitchen exhaust fans (if not connected to HVAC) to improve airflow, but avoid recirculating air.
  • Air Purifiers: Place HEPA air purifiers in adjacent rooms to filter escaped dust.
  • Monitoring: Use a dust particle counter (e.g., TSI DustTrak) to verify containment effectiveness, aiming for <50 µg/m³ of PM2.5 during active removal.
  • Disposal of Contaminated Materials

  • Non-Asbestos Debris: Bag materials in clear contractor bags (for visibility) and dispose of at a local landfill (check municipal regulations).
  • Asbestos-Contaminated Debris: Requires licensed disposal at a hazardous waste facility; double-bag with asbestos warning labels and dampen to prevent fiber release.
  • Safety Precautions for Asbestos in Older Popcorn Ceilings

    Popcorn ceilings installed before 1980 may contain asbestos, a known carcinogen when inhaled. Disturbing asbestos without proper precautions can lead to mesothelioma, lung cancer, or asbestosis. Identification, containment, and professional intervention are mandatory for suspected asbestos.

    Identification of Asbestos-Containing Materials
    Asbestos was commonly used in textured ceilings as a fire retardant and can be identified through:

  • Visual Inspection: Older ceilings (pre-1980) with a bumpy, sand-like texture are high-risk.
  • Material Testing: Collect small samples (using a damp cloth) and send to a certified lab (e.g., AIHA-LAP, LLC) for polarized light microscopy (PLM) analysis.
  • Color and Texture: Asbestos textures often appear lighter in color (white, beige) and have a coarser grain than vinyl-based popcorn ceilings.
  • When to Hire a Certified Professional

  • If the ceiling was installed before 1980 and shows signs of cracking, water damage, or excessive texture buildup.
  • If DIY testing confirms asbestos presence.
  • If the home has occupants with compromised immune systems (e.g., chemotherapy patients, infants).
  • If the ceiling covers more than 100 square feet, as larger areas require engineered containment.
  • Professional Removal Protocol
    Certified asbestos abatement contractors follow OSHA and EPA regulations, including:
    1. Wetting the Material: Spraying with a 10% water solution to suppress fibers.
    2. Double-Bagging Debris: Sealing in 6-mil plastic bags with asbestos warning labels.
    3.

    DIY Restoration and Modern Alternatives for Popcorn Ceilings

    Restoring or repurposing popcorn ceilings offers a cost-effective and sustainable way to preserve historical character while adapting to contemporary design trends. Unlike full removal, targeted restoration techniques allow homeowners to maintain the ceiling’s original texture, acoustic properties, and vintage appeal without the labor-intensive process of stripping and repainting. Modern alternatives further expand creative possibilities, enabling popcorn ceilings to coexist with sleek, industrial, or eclectic aesthetics. This section explores practical DIY methods for restoration, techniques for achieving a "get dust" aesthetic, and strategies for integrating popcorn textures into modern interiors through hybrid designs, lighting, and material pairings.

    Materials and Techniques for Restoring Popcorn Ceilings to Original Texture

    Restoration focuses on repairing damage, concealing stains, and retexturing small sections to revive the ceiling’s original appearance without full removal. The key materials include:

    - Joint compound and popcorn ceiling mix: Used for patching holes, cracks, or degraded areas. A high-quality popcorn ceiling mix (e.g., USG Durok or Sheetrock) ensures texture consistency.

  • Stain-blocking primer: Essential for covering water stains, smoke damage, or discoloration before repainting.
  • Texture spray or brush-on applicator: For retexturing small sections where the original popcorn texture has worn thin.
  • Ceiling paint and sealant: A high-adhesion, mold-resistant paint (e.g., Benjamin Moore’s Aura or Sherwin-Williams Emerald) prevents future damage.
  • Safety gear: Respirator masks (NIOSH-approved), gloves, and eye protection to avoid inhaling dust or irritants.
  • Step-by-Step Process:
    1. Assess and clean the ceiling: Remove loose debris, dust, and cobwebs with a vacuum and microfiber cloth. Use a damp sponge for grease or nicotine stains.
    2. Patch holes and cracks: Apply joint compound over damaged areas, feathering edges to blend with the existing texture. Allow to dry, then lightly sand for smoothness.
    3. Seal stains: Apply a stain-blocking primer (e.g., Kilz Original or Zinsser B-I-N) to affected areas, ensuring full coverage. Let dry completely.
    4. Retexture localized sections: For areas where texture is missing, use a popcorn ceiling mix and a texture spray gun or brush to replicate the original pattern. Work in small sections for consistency.
    5. Repaint: Apply a ceiling-specific paint with a roller designed for textured surfaces. Use a high-nap roller (3/8" to 1/2") to avoid disturbing the texture.

    Pro Tip: Test the popcorn mix on a scrap piece of drywall or an inconspicuous area first to match the existing texture density. Over-texturing can create a heavier, less uniform appearance.

    Creating a "Get Dust" Aesthetic: Partial Removal Techniques

    The "get dust" trend involves selectively removing popcorn texture to reveal underlying layers—such as exposed wood beams, plaster details, or smooth patches—while retaining portions of the original texture for contrast. This technique modernizes the ceiling by introducing dimensional interest and highlighting structural elements.

    Materials Required:

  • Drywall rasp or sanding sponge: For carefully scraping away texture without damaging the base layer.
  • Putty knife and joint compound: To smooth edges where texture is removed.
  • Acrylic sealant or clear varnish: To protect exposed plaster or wood after scraping.
  • Stencils or painter’s tape: For creating geometric or organic patterns in texture removal.
  • LED strip lights or recessed lighting: To accentuate the contrast between textured and smooth areas.
  • Execution Methods:
    1. Define the design: Sketch a pattern (e.g., grid lines, diagonal strips, or organic shapes) where texture will be removed. Use painter’s tape to outline areas for precision.
    2. Scrape selectively: Use a drywall rasp or sanding sponge to gently abrade the popcorn texture in designated areas. Work slowly to avoid gouging the base layer. For plaster, a putty knife may be used to scrape away texture while preserving the underlying material.
    3. Smooth transitions: Blend the edges of removed texture with joint compound, feathering the compound into the surrounding popcorn to create a seamless transition.
    4. Protect and finish: Apply a sealant to exposed plaster or wood to prevent moisture damage. Repaint the entire ceiling in a matte or eggshell finish to unify the look.

    Design Consideration: Pair partial texture removal with modern lighting, such as a linear chandelier or track lighting, to draw attention to the exposed elements. For example, a smooth plaster band along the perimeter of the ceiling can frame a textured center, creating a focal point.

    Integrating Popcorn Ceilings into Contemporary Designs

    Popcorn ceilings can complement modern interiors when balanced with minimalist furniture, bold contrasts, or industrial elements. The key lies in strategic pairing—using the ceiling’s texture as a backdrop rather than a dominant feature.

    Material and Style Pairings:

  • Minimalist interiors: Pair with sleek furniture (e.g., mid-century modern or Scandinavian designs), metallic accents (brass or black iron), and large-format wall art. The ceiling’s texture adds warmth to otherwise stark spaces.
  • Industrial aesthetics: Combine with exposed pipes, concrete floors, and Edison bulbs. A dark gray or black popcorn ceiling contrasts sharply with raw materials, enhancing the gritty-chic vibe.
  • Eclectic or bohemian spaces: Use vibrant paint colors (e.g., terracotta, sage green) on the ceiling to create a focal point, then balance with patterned rugs, woven textiles, and mixed metals.
  • Mid-century modern: Opt for a light-colored popcorn ceiling to maintain the era’s airy feel, pairing it with walnut wood furniture and geometric shapes in decor.
  • Lighting as a Design Anchor:

  • Chandeliers: A crystal or brass chandelier suspended over a textured ceiling adds vintage glamour, while a minimalist pendant light (e.g., a single-globe fixture) keeps the look modern.
  • Recessed lighting: Install can lights with adjustable trim to highlight specific areas of the ceiling, such as where texture has been partially removed.
  • Statement fixtures: A bold, oversized light fixture (e.g., a paper lantern or a sculptural pendant) draws the eye upward, making the ceiling a design feature rather than a background element.
  • Case Study: In a 1970s-inspired living room, a restored popcorn ceiling in "Soft White" (Sherwin-Williams SW 7004) was paired with a black leather sofa, a geometric rug, and a brass floor lamp. The ceiling’s texture provided acoustic warmth, while the dark furniture and metallic accents grounded the space in contemporary design.

    Hybrid Ceiling Designs: Combining Popcorn with Modern Textures

    Hybrid approaches allow popcorn ceilings to coexist with smooth or alternative textures in open-concept spaces, creating visual interest without overwhelming the room. Common strategies include:

    - Zoned texture: Divide the ceiling into sections—e.g., popcorn in the living area and smooth in the dining room—using crown molding or a painted border to delineate the transition.

  • Geometric patterns: Use painter’s tape to create sharp lines or angles where texture meets smoothness, such as a diagonal divide or a checkerboard layout.
  • Material contrasts: Pair popcorn with exposed wood beams, metal panels, or acoustic tiles in a single room. For example, a popcorn ceiling over a kitchen island can contrast with a smooth, painted ceiling in the adjacent dining area.
  • Height variation: In vaulted or two-story spaces, leave the upper portion smooth while texturing the lower section to draw the eye upward.
  • Example Layouts:
    1. Open-plan living/dining area: Popcorn texture in the living room, transitioning to a smooth ceiling in the dining area with a painted stripe separating the spaces.
    2. Home office: A popcorn ceiling in the main work area, with a smooth, painted ceiling over a built-in desk to create a focused workspace.
    3. Kitchen and adjacent hallway: Popcorn texture in the kitchen (for acoustic benefits), with a smooth ceiling in the hallway to maintain a cleaner look.

    Design Rule: Maintain consistency in paint color and finish across hybrid ceilings to avoid visual disjointedness. For instance, use the same matte paint on both textured and smooth sections but apply it with a roller for smooth areas and a textured roller for popcorn.

    Comparative Analysis: Restored Popcorn Ceilings vs. Modern Ceiling Treatments

    The following table compares the cost, effort, and visual impact of five modern ceiling treatments against restored popcorn ceilings. Data is based on average U.S. material costs (2023) and DIY labor estimates for a 12’ x 12’ room.

    | Treatment | Material Cost (USD) |

    The revival of get dust popcorn ceilings underscores a broader cultural shift toward embracing imperfection and layering history with modernity. By understanding their historical significance, navigating removal and restoration with precision, and experimenting with creative alternatives, homeowners and designers can transform these once-overlooked textures into focal points of character and warmth. Whether retained in their original form, partially exposed for a hybrid aesthetic, or repurposed through innovative treatments, popcorn ceilings offer a tangible connection to architectural heritage while adapting seamlessly to contemporary spaces. The key lies in approaching their restoration not as a mere technical task, but as an opportunity to redefine interior storytelling through texture, light, and design.

    FAQ

    What is a "dust popcorn ceiling" and why does it need restoration?

    A dust popcorn ceiling is a textured ceiling covered in thick, crumbly material that flakes off easily, often due to age, moisture, or poor adhesion. Restoration is needed because it poses health risks (mold, asbestos if pre-1980s), degrades air quality, and makes cleaning difficult—replacing or smoothing it improves safety and aesthetics.

    Is it safe to remove a popcorn ceiling myself, or should I hire a professional?

    DIY removal is possible but risky—popcorn texture often contains asbestos (if installed before 1980), which requires professional testing and abatement. If you’re unsure about the age or materials, hire a licensed contractor to avoid health hazards like lung damage or fines for improper disposal.

    What’s the best way to clean a popcorn ceiling without damaging it?

    Use a damp microfiber cloth (never wet) or a soft-bristle brush with mild soap and water to spot-clean stains. Avoid pressure washers or harsh chemicals, which can weaken the texture. For mold, apply a vinegar-water mix (1:1) or a commercial mold cleaner, then dry thoroughly to prevent further growth.

    get dust popcorn ceiling - Kesimpulan

    get dust popcorn ceiling - Kesimpulan

    Leave a Comment

    Comments are moderated before appearing. The data you submit is processed according to the Privacy Policy of ir.msu.ac.zw.