Screed Repair in Cape Town
You do not always need to rip the floor out and start again. Professional screed assessment, diagnosis and repair by Solid Tech Flooring
Free Site Visit * No Obligation Quote
Workmanship guarantee on every job
Serving all of Cape Town & Western Cape
10+ years of installation experience
Free site visit — available this week
Does your screed need repair?
This is the first question we answer on every screed repair site visit in Cape Town. And the honest answer is: it depends.
Some screed failures are surface-level hairline cracking from normal shrinkage, minor delamination at the edges, surface dusting from an under-cured finish. These are repairable without removing the floor. A correctly done repair will outlast a rushed replacement.
Other failures go deeper: widespread delamination from a missed moisture test, structural cracking from a moving substrate, contamination in the original bond layer that was never addressed. In these cases, repair is a temporary fix on a floor that will fail again. Replacement is the correct answer.
We tell you which applies to your floor and we tell you in writing. We do not recommend replacement to sell a new floor. And we do not recommend a cosmetic repair on a floor that will fail in six months. The diagnosis drives the recommendation, not the other way around.
That is the starting point for every screed repair we do in Cape Town.
The common causes
Why do screed floors crack and fail in Cape Town?
Screed failure in Cape Town has a short list of causes. Understanding which one applies to your floor is what determines the right repair approach.
Moisture in the substrate
Cape Town’s wet winters push moisture up through concrete slabs, particularly in older Southern Suburbs homes and in new build estates where slabs have not fully cured before screeding begins. When screed is applied over a wet slab without moisture testing and treatment, the moisture has nowhere to go. It migrates upward, breaks down the bond between the screed and the concrete and causes the screed to delaminate from below.
The result is a hollow-sounding floor that cracks at the surface and lifts at the edges. Tapping the floor produces a drum-like resonance in the failed areas, a tell-tale sign of delamination.
This is the most common screed failure we diagnose in Cape Town, and the most preventable. A moisture test before installation costs almost nothing. Repairing or replacing the failed screed costs significantly more.
Shrinkage cracking
All cementitious screeds shrink slightly as they cure. If shrinkage joints are not cut correctly, or if the screed is applied too thickly in a single pass, the internal stresses release through the surface as cracking. Most shrinkage cracking is hairline and cosmetic; it does not compromise the structural integrity of the floor. However, it does need to be addressed before tiling or finishing, because cracks in the screed will mirror through tile adhesive and appear in the final surface over time.
Missed or wrong surface preparation
Screed applied to a dusty, contaminated or unprimed substrate does not bond. It may appear sound for weeks or months before the bond fails and the screed begins to separate. This cause is particularly common in renovation projects where the existing substrate was not ground or primed before the new screed was poured. In Cape Town, we see this frequently in older properties where a screed was laid over a painted or sealed concrete surface without any preparation.
Traffic damage before full cure
Sand and cement screed needs 28 days to reach full strength. If a construction programme places foot traffic, tools or equipment on the floor before the screed has cured properly, the surface layer breaks down. This is common on Cape Town construction sites where programme pressure pushes subsequent trades in too early. The damage presents as surface dusting, soft spots and localised cracking under point loading.
Structural movement in the substrate
If the concrete slab beneath the screed moves from settlement, thermal expansion or vibration, the screed above it will crack. This type of cracking typically follows a diagonal pattern across the floor and cannot be permanently repaired without addressing the cause. In most Cape Town residential properties, structural movement is limited, but it does occur in older homes, on sloping sites and in properties close to the Constantiaberg or Tygerberg Mountain bases where ground movement can be a factor.
What screed repair options are available in Cape Town?
Once we have diagnosed the cause and extent of the damage, we recommend the correct repair approach. Here are the main options.
Crack repair, epoxy resin injection
For isolated cracks that are stable and not caused by ongoing movement, we inject low-viscosity epoxy resin into the crack under controlled pressure. The resin fills the full depth of the crack and bonds the two faces together permanently. Once cured, the repaired crack is stronger than the original screed matrix. The surface can be lightly ground flush, and the repair is ready for tiling or coating within hours.
Best for: Isolated structural cracks, construction joint failures, localised damage that does not extend across the full floor.
Localised screed removal and reinstatement
Where delamination or failure is confined to a defined area, we cut out the failed section, remove it cleanly, prepare the substrate and reinstate new screed to match the existing level and finish. This is a targeted repair that does not require lifting the whole floor.
Best for: Edge delamination, areas of localised hollow-sounding screed, damage confined to one section of a larger floor.
Full screed overlay, self-levelling
Where the existing screed is too damaged for crack-by-crack repair, but the substrate beneath is sound, a self-levelling screed overlay is the most efficient solution. We prepare the existing surface: grind, clean, prime and pour a fresh self-levelling screed over the top. Ready for tiling or finishing in 24 to 48 hours. This approach adds 3 to 10mm to the floor height, which is worth confirming before starting to ensure door clearances and transitions are unaffected.
Best for: Widespread surface cracking, multiple delaminated areas across a large floor, screed that is functionally failed but still structurally attached.
Full screed removal and replacement
Where the screed has failed with widespread delamination from moisture, structural movement causing ongoing cracking, or contamination throughout the bond layer, removal and replacement is the correct approach. We remove the failed screed, treat the substrate cause, and install the correct screed system for the project. Attempting to repair a floor that will fail again is not something we will recommend.
Best for: Full delamination from moisture ingress, structurally failed screed, screed installed over an uncleaned or unprimed substrate that has never bonded correctly.
Why Cape Town homeowners choose Solid Tech for screed repair
We diagnose first
Most flooring contractors who arrive at a failed screed will quote for full replacement as the default recommendation because replacement is more revenue than repair. We assess first. If the floor can be repaired correctly, we recommend repair. If it cannot, we say so, explain why in writing and quote for replacement. Homeowners in Cape Town consistently tell us this honest approach is what gave them confidence to proceed.
We address the cause
A screed repair that does not address the cause of the failure will fail again. If the cause is moisture in the substrate, we treat the moisture before we repair. If the cause is a contaminated bond layer, we remove it before we reinstate. We do not patch a floor and leave the underlying problem in place.
We work to the same standard as a new installation
Repair work at Solid Tech is held to the same quality standards as new screed installation. Same flatness tolerance. Same primer and preparation quality. Same curing protection. A repaired section should be indistinguishable from the surrounding floor in flatness and performance.
Written guarantee on every installation
Every screed repair we complete comes with a written workmanship guarantee. If the repaired area fails due to our work, we come back and fix it. No debates, no call-out fees.
What to expect
How we approach screed repair in Cape Town
Every screed job is different. The substrate, the project type, the required finish and the timeline all affect how we work. Here is what the process looks like from start to finish.
01
Free site visit and diagnosis
We come to your Cape Town property and assess the floor. We tap-test for hollow areas, check for surface cracking patterns, test moisture levels in the substrate and identify the probable cause of failure. This diagnosis stage is what determines the correct repair approach, and we do it for free, before any quote is provided.
02
Written assessment and recommendation
You receive a written assessment that states what we found, what caused it and what we recommend. If the floor can be repaired, we recommend repair. If it cannot, we tell you that too and why. This assessment goes to you before any work starts. We do not start work on a verbal understanding.
03
Substrate treatment
For moisture-related failures, the most common cause in Cape Town, we treat the substrate before any repair work begins. This may involve grinding, drying, applying a moisture barrier or treating contaminated areas. Repairing over the cause of the failure means the repair will fail too. We address the cause first.
04
Repair execution
Crack injection, localised removal and reinstatement, or self-levelling overlay, depending on the repair type specified in the written assessment. All repair work is done to the same quality standard as a new installation. The same flatness tolerance. The same primer and preparation quality. The same curing protection.
05
Handover and sign-off
We confirm the repair is complete, check the surface flatness, and provide written handover notes confirming what was done, what product was used and what the recommended wait time is before the next floor finish is applied.
Screed repair services across Cape Town and the Western Cape
We assess and repair screed floors across the greater Cape Town metro and the Western Cape, for residential homes, renovation projects, new builds and commercial fit-outs.
Areas we serve:
Constantia
Atlantic Seaboard
Camps Bay
Sea Point
Hout Bay
Century City
Claremont
Kenilworth
Newlands
Rondebosch
Bergvliet
Plumstead
Wynberg
Bellville
Durbanville
Brackenfell
Bloubergstrand
Table View
Milnerton
Goodwood
Pinelands
Stellenbosch
Somerset West
Paarl
Don’t see your area? Get in touch; we cover more of the Western Cape than we can list here.
Frequently asked questions about Screed repair in Cape Town
How do I know if my screed needs repair or full replacement?
The decision depends on the extent and cause of the failure. Isolated cracks, minor delamination at edges and surface dusting are typically repairable. Widespread delamination from moisture ingress, structural cracking from substrate movement, or screed that has never bonded correctly typically requires replacement. We diagnose this during the free site visit and give you an honest written recommendation: repair where it will work, replacement only where it is necessary.
Why is my screed cracking in Cape Town?
The most common causes in Cape Town are: moisture in the concrete substrate that was not tested before screeding (particularly common in older Southern Suburbs homes and in new builds during Cape Town’s wet winters); insufficient shrinkage joints; screed applied over a dusty, painted or unprimed surface; traffic damage before the screed had reached full cure strength; and structural movement in the underlying slab. We identify the cause during the assessment and address it as part of the repair, not just the symptoms.
Can cracked screed be repaired without replacing the whole floor?
Yes, in many cases. Isolated cracks that are structurally stable can be repaired with epoxy resin injection, which fills and bonds the crack permanently. Surface delamination confined to a defined area can be cut out and reinstated. Widespread surface failure that still has a sound base can be overlaid with self-levelling screed. Full replacement is necessary only when the screed has failed throughout or when the cause of the failure cannot be effectively addressed while the existing screed remains in place.
How long does a screed repair last?
A correctly done screed repair that addresses the underlying cause of the failure will last as long as a new installation, typically 10 to 15 years or more in residential use. The critical factors are: identifying and addressing the cause before repairing, using the correct repair product for the type of failure, and completing the repair to the same quality standard as the original installation. A cosmetic patch over an unresolved moisture or bond issue will not last, which is why our diagnosis stage is not optional.
Can screed be repaired in a Cape Town winter?
Yes, though the repair approach and product choice may be influenced by ambient conditions. In Cape Town’s cold, wet winter months, moisture levels in exposed slabs are higher and curing times are longer. We factor this into the repair schedule and product specification. Epoxy crack injection is largely unaffected by winter conditions. Self-levelling overlays perform well in cold conditions but may require slightly longer curing before the next trade moves in. We advise on the specific timing for your installation before work begins.
Will the repaired area look different from the surrounding screed?
For crack injection repairs, the filled crack will be visible but flush with the surface; any floor covering applied on top will conceal it completely. For localised removal and reinstatement, we match the mix and finish of the existing screed as closely as possible; in most cases the repaired area is indistinguishable once the repair has cured and been sanded flush. For self-levelling overlay across the whole floor, the finished surface is uniform throughout.
Can you repair screed before epoxy or tiles are laid on top?
Yes, screed repair before a final floor finish is one of the most common jobs we do in Cape Town. New build construction sites, renovation projects and commercial fit-outs all require sound, crack-free screed before tiles, epoxy, vinyl or polished concrete can go down. We assess, repair and confirm the floor is ready for the next trade before we leave. Written handover confirms the repair method, the product used and the recommended wait time before the next finish is applied.
