Makhdoom Services | Lahore Since 1982
Building Cracks Filling in Lahore – Wall, Roof & Floor Crack Repair
Professional building cracks filling in Lahore for homes, plazas, factories and warehouses. We repair wall and plaster cracks, roof cracks, concrete floor cracks and expansion joints, and stop leaking cracks with PU injection, using the right material for each crack so it does not open again.
Why cracks matter
Crack Filling That Lasts, Not Cosmetic Patching
Most cracks in Lahore buildings come from plaster shrinkage, heat movement on roofs, settlement and moisture. If a crack is simply covered with paint or rigid cement, it usually opens again within one season and lets water in.
Our building crack repair method is practical: inspect the crack, judge whether it is still moving, open and clean it, then fill it with flexible sealant, cementitious or epoxy filler, or PU injection, and finish the surface so it can be painted or waterproofed.
When to call us
- Hairline or wider cracks in walls, ceilings or plaster
- Roof cracks letting rainwater in during monsoon
- Cracks in concrete floors, driveways or parking areas
- Open or broken expansion and control joints
- Cracks leaking water in basements or water tanks
- Cracks to repair before waterproofing, heat proofing or painting
What we repair
Types of Building Cracks We Fill
Wall & Plaster Cracks
Wall crack filling for hairline, shrinkage and plaster cracks inside and outside the house, finished ready for paint.
Roof & Terrace Cracks
Roof crack filling with waterproof filler so rainwater has no entry path, as the first step before roof waterproofing or heat proofing.
Concrete Floor Cracks
Concrete crack repair for floors, driveways, ramps and parking areas using epoxy or cementitious repair material.
Expansion & Control Joints
Joint sealing with backer rod and flexible polyurethane sealant for factory, warehouse, showroom and house floors.
Leaking Cracks
PU injection for active water leaks through cracks in basements, underground tanks and retaining walls.
Forklift-Damaged Edges
Edge repair before sealing where broken joint edges are chipping under forklift and trolley traffic.
Site method
Our Crack Filling Process
The exact system depends on crack width, depth, movement, moisture and the surface. This is how a typical job runs.
Inspection
We check the crack pattern, width, depth, whether it is moving or leaking, and whether an engineer's opinion is needed.
Opening and cleaning
The crack is cut or V-grooved, loose material and dust are removed so the filler bonds properly.
Filling
Flexible sealant for moving cracks and joints, cementitious or epoxy filler for static cracks, or PU injection for leaking cracks.
Finishing
The surface is levelled and sealed, ready for paint, waterproofing coating or heat proofing.
Material selection
Which Crack Filling Material Fits?
| Crack type | Recommended approach | Why it matters |
|---|---|---|
| Hairline plaster or wall crack | Open, clean and fill with flexible crack filler, then paint | Hides the crack and tolerates small seasonal movement |
| Roof or terrace crack | Waterproof crack filler, then roof coating | Stops rainwater entry before waterproofing |
| Static concrete crack | Epoxy or cementitious repair mortar | Restores a solid, level surface |
| Expansion or control joint | Backer rod and flexible polyurethane sealant | Joints must move without cracking the filler |
| Crack leaking water | PU injection through packers | Blocks the water path from inside, no excavation |
Structural cracks: wide, growing, diagonal or stepped cracks near beams, columns or foundations can indicate structural movement. We will tell you honestly when a structural engineer should assess the building before filling.
Leaking cracks
PU Injection for Cracks Leaking Water
When a basement wall, underground tank or septic tank leaks through a crack and outside digging is not possible, PU injection stops the running water from the inside surface.
Packers installed
Small injection ports are drilled and fixed along the crack at roughly 6-inch intervals.
Pressure injection
Polyurethane is machine-injected into the crack under pressure.
Reaction and seal
The chemical reacts with water and expands into a hard foam that blocks the internal voids and closes the water path.
Coverage
Crack Filling Across Lahore
We provide building cracks filling for houses, plazas, factories and warehouses across Lahore, and industrial floor joint sealing for factories in nearby Punjab industrial areas.
Related services
Cracks are often the start of bigger problems. After crack filling, protect the roof with waterproofing in Lahore and keep the top floor cool with heat proofing in Lahore. For factory floors that need full restoration, see epoxy flooring services.
Send Crack Photos on WhatsApp
Share close-up photos of the cracks, where they are and your area in Lahore. We will advise the right repair and arrange an inspection if needed.
Quick answers
Building Cracks Filling FAQs
What is building cracks filling?
It is the inspection, opening, cleaning and filling of cracks in walls, roofs, plaster, concrete floors and joints with a material that suits the crack type: flexible sealant for moving cracks and joints, cementitious or epoxy filler for static cracks, and PU injection for cracks that are actively leaking water.
Which cracks can be filled and which need an engineer?
Hairline plaster cracks, shrinkage cracks, roof surface cracks, floor joints and leaking cracks are routinely filled. Wide, growing, diagonal or stepped cracks near beams, columns or foundations can indicate structural movement; for those we recommend a structural engineer's assessment before cosmetic filling.
Will the crack come back after filling?
Cracks return when the wrong material is used, for example rigid cement in a crack that still moves. We match the filler to the crack movement and seal the surface, and we advise when the cause (seepage, settlement or heat movement) also needs treatment.
Can you fill cracks that are leaking water?
Yes. For active leaks in basements, water tanks and walls we use PU injection: packers are fixed along the crack and polyurethane is pressure-injected so it reacts with water and blocks the leak path from inside.
Do you still provide floor joint sealing?
Yes. Expansion and control joint sealing for factory, warehouse and house floors is part of our building cracks filling service, using backer rod and flexible polyurethane sealant.
Should cracks be filled before waterproofing or heat proofing?
Yes. Open roof and wall cracks should be filled first so the waterproofing or heat proofing coating sits on a sound, continuous surface.
How do I get a quote?
Send close-up photos of the cracks, their location and your area in Lahore on WhatsApp at 0300-4188502. We review the photos and arrange a site inspection where needed, then share an exact quotation.