After a construction or renovation project, one of the biggest challenges is dealing with stubborn stains left behind on floors, windows, walls, tiles, and other surfaces. From hardened cement spots to paint splashes and adhesive residue, these stains can be frustrating to remove without the right methods.

At Kejani Cleaning Services, we specialize in post-construction cleaning services in Kenya, and we’ve developed tried-and-tested techniques to tackle even the most difficult marks. Whether it’s a home, office, school, hospital, or warehouse, this guide will show you the most effective solutions for removing construction stains without damaging your surfaces.

Common Types of Stubborn Construction Stains

Understanding the type of stain you’re dealing with helps determine the best cleaning method. Here are the most common:

1. Cement and grout haze

2. Paint splatters

3. Adhesive or sticker glue

4. Silicone sealant residue

5. Dust and fine construction particles

6. Rust stains (from tools or materials)

7. Grease or oil from machinery

1. Removing Cement & Grout Haze from Floors and Tiles

Solution: Use a grout haze remover or mild acidic cleaner like white vinegar diluted in water.

Steps:

• Sweep and vacuum the area.

• Mix 1 part vinegar to 4 parts warm water.

• Apply the solution and scrub using a non-abrasive brush.

• Rinse thoroughly.

⚠️ Caution: Do not use vinegar on natural stone surfaces like marble or granite — it can cause etching.

Pro tip: For commercial jobs, use a specialized cement remover like Fila Deterdek or other pH-balanced construction cleaners available in Kenya.

2. Removing Paint Splatters from Glass & Tiles

Solution: Razor blade scraper + soapy water or paint remover

Steps:

• Spray soapy water to soften the paint.

• Gently scrape off using a sharp blade at a 45-degree angle.

• For stubborn areas, apply acetone or a paint thinner carefully.

🚫 Never use a dry razor blade on glass — always wet the area first to prevent scratching.

3. Getting Rid of Adhesive & Glue Residue

Solution: Commercial adhesive remover, acetone, or even cooking oil for mild residue

Steps:

• Apply remover or acetone on a cloth and press on the glue.

• Let it sit for 5–10 minutes.

• Scrape off with a plastic scraper.

• Wipe clean with soapy water.

Best Products in Kenya:

• WD-40

• Goo Gone (imported)

• Local spirit-based removers from hardware shops

4. Cleaning Off Silicone Sealant Residue

Solution: Use a silicone remover or apply white spirit

Steps:

• Use a utility knife to gently peel away as much sealant as possible.

• Apply remover and let sit.

• Scrub with a scouring pad or cloth.

This works great around bathroom sinks, tiles, and window edges.

5. Eliminating Fine Dust from Construction Work

Fine dust particles settle everywhere — floors, walls, ceilings, and furniture.

Solution: HEPA vacuum + microfiber cloth

Steps:

• Start by vacuuming from top (ceilings and walls) to bottom (floors).

• Use a damp microfiber cloth to wipe surfaces.

• For electronics, use a soft duster or air blower.

✅ At Kejani, we use commercial-grade vacuums with HEPA filters for large sites to remove even microscopic dust particles.

6. Rust Stain Removal

Rust marks from tools, nails, or scaffolding can leave reddish stains, especially on tiles and concrete.

Solution: Use lemon juice + salt or a commercial rust remover

Steps:

• Sprinkle salt on the rust stain.

• Squeeze lemon juice over it.

• Let sit for 30 minutes, then scrub with a brush.

• Rinse with warm water.

Alternatively, use branded rust removers like WD-40 Rust Remover Soak or CLR.

7. Degreasing Oil & Grease Stains

These are common in garages or areas where machinery was used.

Solution: Degreasing solution + scrubbing

Steps:

• Apply degreaser and let it penetrate the stain.

• Scrub with a stiff-bristle brush.

• Rinse with hot water.

Recommended Products:

• Mr. Muscle Degreaser

• Simple Green (if available)

• Dishwashing soap + baking soda (DIY alternative)

Tips for Safer & More Effective Construction Stain Removal

✅ Test any chemical on a small, hidden area first
✅ Wear gloves and safety goggles when working with solvents
✅ Always ventilate the room when using strong cleaners
✅ For sensitive surfaces (wood, natural stone), avoid acid-based products
✅ Use plastic scrapers instead of metal on delicate areas

When to Call Professional Help

If:

• You’re dealing with large-scale or commercial sites

• You’re unsure which chemical is safe

• You want guaranteed results without risking damage

…then it’s best to call Kejani Cleaning Services.

We offer:

• Full post-construction cleaning packages

• Safe stain removal for all surface types

• Experienced staff and high-grade equipment

We serve the counties of  Nairobi, Kiambu, Machakos, Kajiado, Mombasa, Narok, Trans nzoia, Embu, Tharaka Nithi and beyond.

Book Your Stain-Free Cleaning Today

Let us handle the dirty work. From tough stains to fine detailing, we’ll leave your property spotless.

📞 Call us now for a free quote or
💬 Visit our post construction cleaning service page to book online