Waterproof cement
Rigid-Crete
Waterproof plastering and plaster-screeding
₦6,000 per 25kg bagIndicative
Damp-Wall Treatment & Repairs
Inspection-led treatment of damp, stained and peeling walls: we look for the likely moisture source first, then repair and refinish the wall with suitable waterproof materials.
Damp walls show up as dark patches, salt deposits, peeling paint, mould and crumbling plaster. Painting over them rarely lasts, because the moisture is still there. The first step is to understand where the water is coming from.
Common causes of damp walls
Moisture can reach a wall in several ways, and the visible symptoms alone do not always show which one it is:
- Capillary moisture movement (rising damp): moisture drawn through the tiny pores in blocks, mortar and plaster
- Plumbing leaks
- Roof leaks and rainwater penetration
- Water entering through exterior walls
- Cracks and defective joints
- Poor drainage around the building
- A failed or missing damp-proof course (DPC)
How we treat damp walls
The right method depends on the cause and on the condition of the wall. After inspection, most jobs follow one of two routes.
Severely damaged or weakened plaster
Where plaster is loose, crumbling or badly damaged, we remove the deteriorated plaster and prepare the surface underneath. The wall is then replastered with the specified waterproof material, mixed with cement, plaster sand and water where applicable, and a waterproof screeding or finishing coat is applied where specified. Finally, the wall is left to cure and dry properly.
Sound walls with peeling paint or surface damage
Where the wall itself is sound and the damage is mainly on the surface, we remove loose paint and unsuitable material, prepare the surface and apply a suitable waterproof screeding or finishing system. The wall is then allowed to cure and dry.
Not every damp wall can be fixed by screeding alone. If the moisture comes from a leaking pipe, the roof or poor drainage, that has to be fixed first, and we will tell you so. Our waterproof materials help protect suitable surfaces, but they are not a substitute for a damp-proof course.
Where it is used
- Walls with damp patches, staining or salt deposits
- Peeling or blistering paint
- Mould, fungal growth or algae on wall surfaces
- Crumbling, loose or hollow plaster
- Ground-floor, exterior and perimeter walls
What you get
- Inspection first, so the treatment matches the likely cause
- Damaged material removed, not painted over
- Waterproof plastering and screeding materials from the LDPS range
- Clear advice when a leak or drainage problem must be fixed first
How the work runs
- InspectionWe look at the wall, the damage and the likely source of the moisture.
- RecommendationWe explain what we think is causing it, what must be fixed first and the treatment that suits the wall.
- Removal and preparationLoose plaster, paint and unsuitable material are removed and the surface is prepared.
- TreatmentThe wall is replastered and/or finished with the specified waterproof materials.
- Curing and handoverThe wall is left to cure and dry, then checked with you.
Materials used for this service
LDPS supplies these materials — for our own projects or for your builder.
All materials
Waterproof cement
Super Rigid-Crete
Waterproof plastering and plaster-screeding
₦11,100 per 25kg bagIndicative
Highly water-resistant screed
Total Screed White
Smooth interior and exterior wall finishing
₦9,500 per 20kg bagIndicative
Highly water-resistant screed
Total Screed Grey
Wall and floor screeding
₦8,500 per 20kg bagIndicative
Questions
What causes damp walls?
Common causes include capillary moisture movement (rising damp), plumbing and roof leaks, rain entering through exterior walls, cracks, poor drainage and failed or missing damp-proof courses. We inspect the wall to find the likely source.
Can you treat damp without removing the plaster?
Sometimes. If the wall is sound and the damage is mainly on the surface, we may only need to remove loose paint and apply a waterproof finishing system. Loose or crumbling plaster has to come off first.
Is your treatment a replacement for a damp-proof course?
No. Our waterproof materials help protect suitable surfaces against moisture, but they are not a substitute for a damp-proof course, and not every case of rising damp can be solved by surface treatment alone.
Can I send photos first?
Yes. Photos of the wall, where it is and when the damp appears help us give a first view before we visit.
Request a quote for Damp-Wall Treatment & Repairs
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