Professional Floor Screeding
& Leveling Service
The absolute foundation of any flawless architectural flooring finish—whether it is large-format porcelain tiles, luxury engineered hardwood, or industrial epoxy resin—relies entirely on the geometric perfection and compressive strength of the underlying subfloor. Concrete slabs are rarely poured perfectly flat; they naturally cure with severe undulations, dips, and rough ridges. When amateur contractors or untrained laborers attempt to install expensive flooring directly over these uneven substrates, or try to level the floor using weak, uncalibrated dry-sand mixes, they orchestrate a catastrophic structural failure. These negligent practices inevitably result in hollow-sounding tiles, severe lippage (sharp uneven edges), cracking wooden planks, and catastrophic water pooling in wet areas due to incorrect gradient slopes. Karachi Repairs operates an elite, highly specialized structural masonry division dedicated exclusively to the precision engineering, chemical bonding, and flawless application of floor screeds and self-leveling compounds. We categorically reject inferior subfloor preparation methods. Our certified masonry engineers utilize advanced laser-guided topographical leveling, heavy-duty aluminum straight-edge compaction, and highly calibrated polymer-modified cementitious screeds designed to fuse monolithically with your concrete slab. Whether you require the rapid leveling of a massive commercial warehouse floor, perfectly sloped screeding for a newly waterproofed bathroom pan, or the acoustic dampening layer for a residential high-rise, we engineer a permanent masonry protocol that guarantees absolute planar flatness, load-bearing supremacy, and lifelong durability for your ultimate floor finish.
Expert Subfloor Leveling Service
Are you preparing to install expensive large-format porcelain tiles, but your concrete slab is wildly uneven, filled with deep dips and severe bumps? Is water failing to drain properly in your wet kitchen or bathroom because the floor lacks the correct pitch? Or do you need a completely flat, self-leveling compound applied before laying luxury vinyl planks? Provide us with your property's address and a brief description of the structural project. Our specialized masonry engineers will evaluate the surface topography and execute a precise, heavy-duty screeding protocol directly at your site anywhere in Karachi.
REQUEST A SCREEDING ESTIMATE
Precision Alignment
The Way It Should Be Poured
Pouring a floor screed without rigorous geometric control and chemical adhesion protocols guarantees an immediate structural failure. If a thick layer of sand and cement is spread over a dry, dusty concrete slab without aggressive mechanical hacking and primer application, the dry slab instantly sucks the moisture out of the screed. This aborts the hydration process, resulting in a weak, powdery layer that entirely delaminates from the base, producing a loud hollow drum sound when walked upon. It will inevitably crack and shatter under the weight of heavy furniture or foot traffic. Our advanced leveling methodology is entirely distinct; we rely on exact mathematical alignment, strict chemical bonding, and highly controlled mechanical compaction. We ensure every square inch of the new screed is forcefully compressed, chemically fused to the concrete below, and leveled to an absolute zero-plane, creating an impeccable, rock-solid canvas for subsequent luxury flooring installations.
SBR Latex Priming & Slurry Bonding: We never apply wet screed to a dry, dusty floor. After aggressively cleaning and wire-brushing the slab to open its pores, we scrub a highly concentrated styrene-butadiene rubber (SBR) latex bonding slurry directly into the concrete. This acts as an industrial-grade chemical super-glue, ensuring the new screed fuses monolithically to the substrate, permanently preventing hollow voids.
Laser-Guided Bull Marks & Compaction: We deploy high-precision rotary laser levels to establish reference "bull marks" across the entire room. Once the semi-dry mortar is distributed, we utilize heavy, perfectly straight aluminum screeding rules that glide over these guides. This forcefully shears off excess material while violently compacting the sand-cement mix deep into the floor, eliminating trapped air pockets.
Regulated Hydration Curing: After the floor is finished perfectly flat, the chemical reaction of the cement must be carefully sustained. If the screed dries too quickly, it becomes brittle, warps, and develops severe shrinkage cracks. We meticulously mist the new surface with water over a strict 72-hour period, or cover it with heavy polythene sheets, allowing the cement to achieve its maximum designed compressive strength.
Sand-Cement Screeds, Self-Leveling,
And Industrial Epoxy Bases
The mechanical engineering required to properly level a floor varies drastically based on the specific depth of the depression and the final flooring material to be installed. For deep leveling requirements (typically 25mm to 100mm) over a structural concrete slab prior to laying heavy porcelain tiles or natural marble, a highly compacted, semi-dry sand-and-cement screed is mandatory. It provides immense compressive strength and acts as a massive thermal heat sink. In stark contrast, when preparing a floor for highly sensitive, ultra-thin finishes like engineered hardwood, luxury vinyl tiles (LVT), or delicate medical-grade linoleum, standard cement is entirely too rough and porous. This demands the application of highly advanced liquid self-leveling compounds (SLC) poured at thin depths (3mm to 15mm), which cure into an ultra-hard, glass-smooth finish that eliminates all microscopic bumps that would otherwise telegraph through thin flooring.
Karachi Repairs possesses the technical expertise and advanced industrial knowledge to handle all floor leveling configurations flawlessly. For complex industrial environments subjected to heavy forklift traffic, we integrate specialized hardening aggregates and epoxy primers directly into the screed matrix to prevent surface dusting and cracking. We prioritize the structural integrity of your property, ensuring the absolutely correct leveling material and chemical bonding agent is selected based on the specific load, thermal vibration, and acoustic requirements of your architectural design.
Honest Quotes, Premium Materials
Quoted Before We Start
We meticulously assess the required floor leveling dimensions via an on-site evaluation using laser topography. We quote clearly based on the total square footage, the required thickness depth (e.g., a deep 2-inch sand-cement screed vs a thin 5mm liquid self-leveling pour), and the extent of specialized additions required (e.g., SBR waterproofing or anti-crack mesh). You are provided a firm, transparent total price for materials and skilled labor before we mix a single bucket. No hidden fees.
Industrial-Grade Aggregates & Resins
Local untrained laborers routinely use cheap, expired cement and unwashed, salty sea sand that absolutely ruins the floor's structural integrity, causing severe map cracking, blistering, and rapid surface crumbling under tiles. We strictly upgrade the process using fresh, high-grade Portland cement, double-washed river sand, and highly advanced self-leveling liquid polymers. Our chemistry matches the exacting standards required for permanent structural foundations.
Specialist Master Screeders
Floor leveling requires a deep, advanced understanding of concrete hydration, gradient slopes for water drainage, and precise geometrical screeding. Every technician handling your property is a vetted, experienced professional, ensuring that mortar is uniformly compacted flawlessly, preventing the disastrous wavy floors, pooling water, or hollow-sounding voids commonly caused by amateur, unmonitored laborers attempting quick fixes.
Convenient Logistics Handled
Heavy Materials Delivered Safely
Attempting to procure and transport massive bags of Portland cement, heavy sacks of self-leveling compound, and cubic yards of raw river sand across Karachi using unverified local truck drivers is logistically exhausting, highly dangerous, and completely inefficient. Managing the chaotic delivery, preventing material theft, and coordinating the heavy lifting of raw materials up multiple flights of stairs or across finished driveways causes severe delays and immense frustration for property owners. We eliminate this logistical nightmare completely. Our structural masonry service teams provide unparalleled convenience for busy clients by managing the entire material procurement, secure transportation, and heavy-lifting logistics directly from the supplier to your precise floor zone.
We offer fully self-contained, flexible construction solutions. Our logistics teams arrive at your property equipped with heavy-duty transport trucks, forced-action mechanical mixers, and the necessary pumping equipment. We execute the material staging cleanly on-site, meticulously utilizing protective tarps and heavy plastic drops to ensure your existing walls, windows, and surrounding structures remain completely safe from wet cement splatters and heavy mechanical dust. Within days, your dangerously uneven concrete slab is transformed into a fully leveled, perfectly smooth, and correctly cured foundation, completely stress-free.
Why Karachi Repairs For Your Subfloor Leveling
Floor screeds take immense abuse from heavy foot traffic and structural loads. A poorly executed pour with cheap mortar will crack, sink, and hollow out. Here is how our expert masons ensure a flawless, unyielding flat finish.
Perfect Mix Proportions
Standard unskilled laborers mix cement and sand by randomly guessing the ratios, resulting in powdery, crumbly floors. We utilize precisely measured 1:3 or 1:4 volumetric ratios, ensuring the mortar cures into a highly compressive, rock-solid surface that supports massive loads.
Laser-Guided Accuracy
Leveling rapidly by eye inevitably results in a wavy, undulating floor that cracks expensive porcelain tiles. We use high-visibility laser levels and heavy aluminum screeds on every single section, ensuring the finished surface is perfectly flat to millimeter tolerances.
Advanced Surface Hacking
Slapping wet cement onto a smooth, dusty concrete slab guarantees it will delaminate and sound hollow. We aggressively hack the concrete to create a mechanical key and apply SBR latex bonding agents so the new screed fuses monolithically to the structure.
Anti-Crack Mesh Integration
Where screed passes over buried PVC electrical pipes or under-floor heating coils, thermal expansion causes cracks. We embed high-tensile fiberglass mesh directly into the base layer across these weak points, absorbing the tension and preventing straight-line fractures.
Damp-Proofing Screeds
If your ground floor suffers from internal water weeping, normal screed will just absorb it, ruining wooden floors above. We mix advanced crystalline waterproofing chemicals into the mortar, rendering the entire floor completely hydrophobic.
Upfront Pricing
Once our engineer assesses the square footage, required leveling depth, and waterproofing needs, we give you a firm total price for the entire screeding build. There are no sudden requests for additional funds halfway through the job.
Common Subfloor Leveling Failures
Poor application practices and improper mortar chemistry aggressively degrade floor screeds. Recognizing the specific type of structural failure allows us to deploy the exact leveling protocol needed.
Uneven & Wavy Floors
If your new flooring feels like it rolls up and down, the amateur contractor poured the screed without laser levels or rigid aluminum screeding bars, resulting in a severely undulating, hilly subfloor that ruins wood and tile finishes.
The Fix: We deploy advanced, highly fluid self-leveling compounds that naturally seek true zero-level across the room.
Cracked Tiles From Flexing
A single, massive straight crack running across the center of a tile often occurs because the screed beneath it was not properly compacted, creating a weak air pocket that snaps the brittle ceramic when stepped on.
The Fix: We physically hack out the weak spot and aggressively compact high-strength mortar into the void.
Water Pooling in Bathrooms
If puddles of water stubbornly sit in the corner of your bathroom or terrace instead of flowing to the drain, the floor was poured with an incorrect gradient slope, leading to severe stagnant mold and mosquito breeding.
The Fix: We engineer a precision pre-sloped screed bed that correctly manipulates gravity toward the gullies.
Crumbly, Powdery Subfloors
If you can easily scrape the floor into a fine powder with your shoe, the mason used unwashed sea sand full of salts, or a severely weak sand-heavy mix, causing the cement to fail chemically and die.
The Fix: We perform extensive scraping to remove the dead powder and apply a fresh, high-strength resin screed.
Hollow Sounding (Delamination)
If you tap the floor and it sounds empty like a drum, the screed has completely delaminated from the underlying concrete slab. This happens because the mason failed to hack the floor or apply latex bonding slurry before pouring.
The Fix: We physically knock off the dead, hollow sections, apply SBR primer, and re-pour the void completely flush.
Moisture Wicking (Efflorescence)
If you are laying vinyl or wood, and the floor develops thick white salt crusts that warp the planks, ground moisture is actively wicking up through the porous concrete because it lacks a proper moisture barrier.
The Fix: We apply highly advanced crystalline waterproofing slurries or epoxy damp-proof membranes over the slab.
What Actually Happens When You Book A Leveling Job
Executing a safe, perfectly flat concrete subfloor requires strict architectural protocols. Here is the step-by-step process our engineering team follows.
From Uneven Slab To Perfect Flatness
You Describe The Project
Tell us if it is a new rough slab needing a 2-inch sand-cement screed, a bathroom requiring a shower pan slope, or an office floor needing a 5mm self-leveling compound for wood planks. Sending a photo via WhatsApp allows us to gauge the exact material volume needed.
On-Site Level Assessment
Our masonry expert inspects the site. We deploy rotary laser levels to map the topography of the slab, identifying the lowest dips and highest peaks to calculate exactly how much material is required to bring the entire room to a perfect zero-level.
Clear Quote, Your Approval
We explain exactly what hacking, mesh insertion, or liquid compound additions are needed. You are given a firm, transparent price for the entire process including material delivery. No cement is mixed until you agree.
Surface Prep & Screeding
We aggressively clean the slab, apply SBR latex bonding slurries or epoxy primers, and establish laser-guided bull marks. We then pour the heavy semi-dry mortar or liquid compound, violently compacting and screeding it perfectly flat with aluminum straight-edges.
Hydration Curing & Clean-Up
For standard cement screeds, we meticulously mist the floor with water over the next several days or cover it with polythene sheets to ensure the mortar achieves maximum compressive strength without shrinking. We then sweep the site perfectly clean.
Warning Signs Worth An Urgent Call
What To Do Before We Arrive
Ready to Build a Flawless Base? Call Karachi Repairs.
Since 2015, we have safely poured thousands of square feet of perfectly flat, laser-leveled commercial screeds, completely rebuilt shattered residential shower pans using impermeable waterproofing membranes, and expertly installed advanced self-leveling compounds for luxury wood flooring across the city. We understand exactly what precise cement-to-sand mortar ratios, heavy mechanical substrate hacking, and meticulous SBR latex chemical bonding mean for the absolute geometric perfection and lifetime durability of your expensive architectural floor finish.
Call or WhatsApp 0332-6678611, or fill in the form on this page to request a site visit. Tell us your location and describe the floor leveling project dimensions. We will dispatch a fully equipped structural engineering team to your property, bringing the correct high-grade materials, precision aluminum screeds, and master masons needed to execute a permanent, flawless build securely and efficiently.
Floors Leveled Flawlessly, Not Just Poured Poorly
Ignoring a visibly undulating, wavy concrete slab, severely crumbling grey subfloor sections, or a bathroom pan that constantly pools stagnant water is a guarantee of a catastrophic finishing disaster. A slightly uneven concrete floor today turns into a highly expensive, shattered porcelain liability when you let the rigid tiles bridge over hollow air voids. Trying to repair a heavily depressed floor with loose dry sand, or pouring a new screed directly onto a dusty slab without utilizing SBR latex chemical primers, severely damages the architectural integrity of your building, guarantees permanent hollow delamination, and ensures the floor will literally turn to powder under heavy foot traffic. The true value of a professional floor screeding and leveling service lies in exact mathematical precision combined with superior material chemistry. We do not just slap cheap mortar on smooth concrete, spread it quickly by eye without laser levels, or leave your site littered with heavy rubble. We carefully analyze the foundation load capacity, apply specifically proportioned Portland cement mixes to ensure monolithic bonding, utilize high-tensile fiberglass mesh for sheer reinforcement across buried pipes, and deploy strict hydration curing so that the compressive strength, perfect geometric flatness, and absolute safety of your floors are permanently guaranteed.
As a specialized division of Karachi Repairs, we expertly handle everything from pouring massive, perfectly straight thick-bed semi-dry screeds and rapid liquid self-leveling compounds for delicate wood flooring, to the meticulous structural repair of shattered, hollow subfloors and the specialized moisture-proofing of old leaking washrooms. Whether you need a massive newly-built commercial warehouse perfectly leveled for heavy machinery or an old family home's sinking, hollow kitchen floor stabilized securely, every job is approached with absolute technical accuracy, quoted transparently upfront based on square footage and thickness, and executed cleanly right on your property by master craftsmen.
If your floor has developed severe dips, the subfloor is turning to powder, or you require a new heavy-duty screed poured perfectly flat, the easiest solution is a single WhatsApp message. Describe the material type, send us a photo of the site, and we will dispatch a professional structural masonry team to seamlessly execute your build.
Explore More Masonry Services Here
Floor Screeding FAQs
The self-leveling compound, hollow floor repair, and bathroom slope questions our Karachi clients ask most often.
What is self-leveling compound?
It is a highly fluid liquid polymer poured at very thin depths to create an ultra-smooth, perfectly flat finish, specifically required before laying sensitive materials like engineered wood or vinyl planks.
Why does my new floor screed sound hollow?
Hollow screed has separated from the concrete slab because the mason failed to apply an SBR latex bonding slurry before pouring. The dead screed must be physically hacked off and re-poured.
Do you use sea sand for your floor mortar?
Never. Unwashed sea sand contains massive amounts of salt that destroys the cement's bond and causes the floor to crumble into powder. We strictly use clean, double-washed river sand.
Why does water pool in the corner of my bathroom?
The floor screed was poured flat without a proper gradient slope toward the drain. We deploy laser levels to engineer a precision pre-sloped screed bed that correctly manipulates gravity.
Why did my large porcelain tiles crack in the middle?
Cracks occur because the concrete subfloor beneath the tile is uneven, creating an air pocket that snaps the brittle ceramic when stepped on. We must level the floor perfectly before tiling.
How do you ensure the floor is perfectly flat?
We use high-precision rotary laser levels to map the floor, set exact 'bull marks', and use heavy aluminum screeds to aggressively compact and flatten the wet mortar.
Why do you spray the newly leveled floor with water?
If cement dries too fast in the heat, it becomes brittle and develops shrinkage cracks. We mist the floor for 48 to 72 hours to ensure the mortar cures chemically and achieves maximum strength.
Do I need to buy the heavy sand and cement myself?
No. Our logistics team handles all material procurement. We purchase fresh Portland cement and river sand, transporting and staging them directly at your site without making a mess.
Will I get a price quote before you start?
Always. Our engineer assesses the dimensions and required depth, providing a firm total price for materials and skilled labor before any cement is mixed. No hidden fees.
Which areas of Karachi do you cover?
We provide our specialized structural leveling services across all major areas, including DHA, Clifton, Gulshan-e-Iqbal, PECHS, North Nazimabad, Malir, and Bahria Town.
Areas We Cover
Across Karachi
Our mobile engineering units transport heavy-duty cement mixers, precision aluminum screeds, and raw materials directly to your property across all major city zones.