Dr Fixit LW+ 101 (Pidiproof) being mixed with cement mortar for waterproof plaster, damp wall protection, and rising damp prevention in Kenyan homes.
In many Kenyan homes, the problem starts long before paint, tiles, or even plaster.
You build a new house. After a few months you begin to notice:
Most people think:
“The paint was fake.”
No.
The real issue is water entering the wall from inside the cement itself.
Cement, mortar and concrete are not waterproof.
They contain microscopic capillaries that allow water to travel upward through the wall. This is called rising damp — one of the most common construction defects in Kenya, especially in ground floor houses and perimeter walls.
The product specifically designed to stop this during construction is:
Pidiproof is a liquid that you mix with cement mortar during plastering, screeding, or block laying to make the cement water-repellent.
Think of it as:
“Waterproofing built inside the wall.”
Instead of trying to stop leaks after construction, you prevent them from ever forming.
Dr Fixit LW+ 101 is an integral liquid waterproofing compound based on specialized surfactants and polymers that reduce the surface tension of water in cement mortar.
When added to mortar:
This process is called integral waterproofing.
Ground moisture tries to travel upward through masonry walls.
Pidiproof reduces capillary suction, stopping moisture migration.
The white salts appearing on walls come from water carrying soluble salts through plaster.
When water movement stops, efflorescence stops.
Mortar becomes:
Fundis often notice plaster mixed with Pidiproof spreads more easily.
Many paint failures are not paint problems — they are moisture problems.
Water behind paint causes peeling. Pidiproof prevents that.
Prevents moisture from soil entering walls.
Most important application.
Protects walls exposed to rain.
Works together with Super Latex 302.
Reduces seepage.
Prevents dark staining after rains.
Stops moisture behind cabinets.
Typical plaster mix:
1 cement : 4 sand
Add Pidiproof into mixing water first.
Never pour directly into dry cement.
Stir solution thoroughly before adding cement and sand.
Apply normally using trowel.
Cure plaster for 7 days.
Curing is critical — waterproofing develops during cement hydration.
200 ml Pidiproof per 50 kg cement bag
This is the most important number fundis must remember.
Do not guess.
Too little = ineffective
Too much = weak plaster
Very important.
Pidiproof is not a coating.
Do NOT:
It only works when mixed into cement mortar.
| Feature | Pidiproof | Super Latex 302 |
|---|---|---|
| Type | Integral waterproofing | Bonding + waterproofing |
| Used in | Plaster & mortar | Slurry, screed, repairs |
| Main purpose | Stop damp | Stop leakage & improve bonding |
| Stage | During construction | Before tiling / repair |
| Rising damp | Excellent | Moderate |
| Tile bonding | No | Yes |
They are complementary products, not replacements.
1 litre Pidiproof ≈ 5 bags of cement
Typical bungalow plastering uses 10–20 litres depending on size.
Dr Fixit LW+ 101 (Pidiproof) is an integral waterproofing compound added to cement mortar and plaster to reduce water absorption and prevent dampness in walls.
Yes. When mixed into plaster or block laying mortar, Dr Fixit LW+ 101 reduces capillary suction and helps stop moisture rising from the ground.
Dr Fixit LW+ 101 is mainly used during construction while plastering, screeding, or laying blocks. It is preventive waterproofing.
It cannot work on top of paint or old plaster. The damp plaster must be removed and new plaster applied with Dr Fixit LW+ 101 mixed into the mortar.
The recommended dosage is approximately 200 ml of Dr Fixit LW+ 101 per 50 kg bag of cement.
No. It should first be mixed into the gauging water and then used to prepare the mortar.
Yes. It improves water resistance of masonry joints and reduces dampness penetration
Yes. When used in external plaster, it reduces rainwater penetration and helps protect paint from peeling.
It helps reduce moisture in plaster but bathroom floors still require proper under-tile waterproofing using products like bonding and slurry systems.
It can be used in external plaster around tanks, but for internal tank waterproofing, specialized cementitious waterproofing systems are usually required.
No. Dr Fixit LW+ 101 is a cement additive and will not function if mixed with paint.
Yes. Proper curing for at least 5–7 days is required for the waterproofing properties to develop.
No. It supplements DPC but does not replace proper damp proof course installation.
Yes. By reducing moisture inside the wall, it significantly increases paint durability.
Yes. Remove the damaged plaster and replaster using mortar mixed with Dr Fixit LW+ 101.
Yes. It improves mortar workability and reduces shrinkage cracking.
No. Roof slabs require waterproof screed or polymer bonding waterproofing systems rather than integral plaster additives.
Approximately 1 litre treats about 5 bags of cement. Total quantity depends on plastering area.
Yes. It only requires measuring and mixing into water before preparing mortar.
Yes. It helps prevent dark damp patches and staining after rains.
At Rangi Paint Store you get:
Most waterproofing problems in Kenya are not repair problems — they are prevention problems.
If you add Dr Fixit LW+ 101 (Pidiproof) during plastering, you prevent:
Waterproofing should start at the mortar stage, not after the house is finished.
For correct usage guidance and genuine products, visit Rangi Paint Store and protect your building before problems begin.
For more technical specifications, safety guidelines, and product details about Dr. Fixit LW+ 101 (Pidiproof), you can visit the official Dr Fixit East Africa Website.
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