In Kenya’s growing construction market, more homeowners are exploring do-it-yourself (DIY) solutions to cut costs while maintaining control over their home finishes. Among the most practical tasks one can take on is plastering and skimming. These two steps significantly influence a home’s durability, finish quality, and visual appeal especially in affordable housing developments in areas like Makuyu, Kangundo Road, and Isinya.
This guide explains the key differences between plastering and skimming, the tools and materials needed, and how to execute each process effectively.
Understanding the Basics: Plastering vs. Skimming
Plastering involves applying a cement-sand mixture to walls or ceilings to create a solid, uniform surface. Skimming, on the other hand, is the final, thin layer applied over the plaster to smooth out imperfections and prepare the wall for painting. These two steps are essential in any building process, particularly when working on low-cost homes.
Just as surface finishes play a role in outdoor durability highlighted in the article on Affordable Outdoor Paving Options interior finishes also impact longevity and aesthetics indoors.
Tools You’ll Need for DIY Plastering
To get started, gather basic tools including:
- A trowel and hawk board
- Plastering float
- Bucket trowel
- Straight edge or steel rule
- Plumb line
- Sponge float or sandpaper
- Water bucket or sprayer
- A mixing container or wheelbarrow
For larger-scale projects, it may be wise to bring in trained artisans. More on how to manage professional help is discussed in Hiring and Managing Contractors in Kenya.
Mixing Materials: Getting the Right Ratios
The standard plaster mix used in Kenya is typically one part cement to four parts sand, with clean water added slowly until the mixture reaches a workable paste. Optional additives such as bonding agents or waterproofing compounds can be included, especially in bathrooms or exterior-facing walls.
These principles also apply in alternative wall construction methods like those detailed in Rammed Earth Wall Construction in Kenya.
Step-by-Step Guide to Plastering
- Begin by preparing the surface. Scrape off dust, oil, and any existing paint or debris. Dampen the wall to prevent the plaster from drying too fast.
- Apply a key coat, which is a thin, rough layer that helps the main plaster bond properly.
- Use a hawk and trowel to apply the main plaster, working from top to bottom.
- Level the wall using a straight edge or steel rule to maintain an even finish.
- Once the plaster is applied, cure the surface by spraying it lightly with water for several days to avoid cracks.
For exterior walls, consider combining this method with weather-resistant materials, such as those featured in Perimeter Wall Materials in Kenya.
Skimming for a Smooth Finish
After the plaster has dried thoroughly, the wall is ready for skimming:
- Mix a joint compound or gypsum filler into a smooth paste.
- Use a wide skimming blade or trowel to spread a thin coat over the plaster.
- Once the skim coat dries, sand it with fine-grit sandpaper.
- Apply a second coat if needed, sanding again for a refined, paint-ready surface.
This process is popular in modern, master-planned housing developments.
Common Mistakes to Avoid
Avoid these frequent DIY plastering and skimming pitfalls:
- Skipping proper wall preparation, which leads to poor adhesion
- Adding too much water to the plaster mix
- Applying plaster on dry or overheated surfaces, which causes cracking
- Ignoring the curing process, resulting in weak or flaky finishes
For homes built with sustainable approaches, it’s important to align wall finishes with broader eco-friendly goals, as discussed in Green Building Practices in Kenya.
Ideal Scenarios for DIY Work
DIY plastering and skimming are best suited for:
- Rental units in areas like Githurai, Kayole, or Kawangware
- Small homes with one or two bedrooms in satellite towns such as Joska and Kamulu
- Servant quarters or low-cost extensions added to existing homes
Even timber or prefab walls used in fencing and partitioning can benefit from this technique. See examples in Low-Cost Fencing Ideas for Kenyan Plots.
Taking on plastering and skimming as a homeowner is a practical way to cut construction costs without compromising on quality. With a little patience and guidance, you can achieve professional-looking walls that are ready for painting and interior decoration. Whether you’re finishing your own home or improving rental spaces, this skill offers great long-term savings.
Explore More Construction Insights:
