— What we do
Waterproofing, plumbing and flooring & renovation — each diagnosed on site, quoted in writing, and delivered by a crew that owns the outcome.
We diagnose the source and path of water before selecting a system for the structure, substrate, exposure and expected service life — rather than reaching for a one-size-fits-all coating.
Moisture mapping before we quote, so the fix matches the actual leak path — not a guess.
Membrane, coating and injection systems matched to substrate and exposure conditions.
Post-application inspection to confirm the seal holds under real conditions, not just on paper.
Root-cause diagnosis first — we’ll tell you if a smaller repair solves it before proposing a bigger one.
Reliable plumbing installation, repair and maintenance for homes, commercial spaces and institutions, delivered with care for access, finish and future serviceability.
Leak tracing before any wall or floor is opened up.
Clean chasing and reinstatement so finishes go back the way they were.
Fixtures and fittings selected for the water pressure and use pattern on site.
Access left for future serviceability, so a small fix later doesn’t mean breaking tile again.
We help spaces look better, work better and hold up to everyday use through quality flooring installation, repairs, upgrades and broader renovation support.
Substrate checked and corrected before any finish goes down, not after.
Level, cure and seal times respected, even when a schedule is tight.
Repairs matched to the existing finish where a full replacement isn’t needed.
Waterproofing coordinated with flooring in wet areas, so one team owns both sides of the job.
— Systems & materials
Broad categories of the systems we draw on — the specific product and method is decided per site during the survey, not before it.
Torch-applied and self-adhesive membranes for roofs and large horizontal areas.
Penetrating systems for concrete tanks, basements and below-grade structures.
Targeted repair for active leaks through cracks and construction joints.
Rigid and flexible coatings for wet areas, tanks and internal wall treatment.
Standard piping systems for water supply, waste and drainage lines.
Grouting and bedding compounds matched to tile and flooring type.
Poured and pre-cast terrazzo, plus levelling screeds for flooring builds.
Movement joint and sealant systems for balconies, terraces and facades.
— How a project runs
We inspect the structure, trace the source of the problem and record what we find.
A written scope and quote, weighing materials, cost, time and durability.
Our crews execute to spec, with safety and site tidiness maintained throughout.
A final walkthrough, care notes, and support if anything needs attention.
— Questions
Tell us what’s happening and where — we’ll schedule a visit and follow up with a written scope.
Greysand Builders Ltd. is a Nairobi-based construction-support company built around a single, uncompromising specialty: keeping water out of buildings. From that specialty, the company has grown a focused portfolio of waterproofing, plumbing and renovation services trusted by homeowners, developers, contractors and institutions across the region.