Exterior wall plaster and skim coating service Singapore

Exterior wall plaster and skim coating are finishing processes used to protect and smooth exterior wall surfaces. Plastering involves applying a thick cement-sand layer to create a strong, weather-resistant base. After curing, a skim coat, which is a thin layer of fine material, is applied to achieve a smooth, even surface ready for painting or further finishing. These layers enhance durability, improve appearance, and shield walls from environmental damage.

Plastering is the application of a thick layer (typically 12–20 mm) of a mortar mix (usually cement, sand, and water) to exterior masonry surfaces.

• Protection against rain, UV, and pollution
• A base for paint or finishing
• Improved wall aesthetics and durability

• Cement Plaster (1:4 to 1:6 ratio) - for general exterior walls
• Lime-cement plaster - more breathable, better crack resistance
• Ready-mix exterior plaster - premixed, consistent quality

Skim Coating is a finishing layer applied over plaster or concrete to smoothen minor imperfections. Thickness is usually 1–3 mm.

• Polymer-modified cement-based skim coat
• Gypsum-based skim (for interior use only)
• Acrylic or ready-mix skim coats (for high-quality finishes)

• Surface Preparation : Clean wall surface (dust, oils, loose material), Wet the surface to avoid rapid moisture loss.
• Plastering : Apply a dash coat (bonding layer) if needed, Use mortar (1:4 or 1:5 cement:sand), Apply to desired thickness (12–20 mm), Level with a straight edge, Cure for 7 days (keep moist).
• Skim Coating (after plaster cures) : Apply thin skim coat using trowel or putty knife, Smoothen the surface in layers (1–2 mm per coat), Allow each coat to dry fully, Light sanding if needed before painting.

Key difference between exterior plastering and skim coarting are given below :

• Surface Preparation : AClean the wall surface (remove dust, oil, loose particles). Wet the surface with water to prevent moisture loss from the plaster.
• Application of Plaster : Apply Base Coat Use a trowel to apply the plaster mortar to the wall. Thickness: Usually 12-20 mm. Leveling a straight edge or screed to level the surface. Curing Keep the plastered wall moist for 7 days to prevent cracks.
• Surface Preparation for Skim Coat : Let the plaster cure completely (at least 7 days). Clean the surface and repair any cracks or imperfections. Apply a bonding agent if required (especially on smooth surfaces).
• Application of Skim Coat : Mix: Use a ready-mix polymer-based skim coat or mix cement and fine filler.
  Apply: Use a steel trowel or putty knife to spread a thin layer (1–3 mm).
  Multiple Layers (if needed): Apply second coat after first dries. Smoothen each layer well.
• Finishing : Light sanding may be done after drying for a smooth finish. Ensure the surface is dry and dust-free before painting or sealing.

Singapore, Singapore City

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Hui Miao Engineering & Construction PTE LTD (202529640H) are here to solve your all kind of installtion, rapiring, restoration of wall plaster and skim coating projects efficiently and to a high standard of quality in Singapore.

Please call or whatsapp for more information about any kind of installtion, rapiring, restoration of concrete HDB wall panel Service in Singapore area.

Phone : +6583077539

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