Asian Paints SmartCare SmartCare Damp Proof Ultra
A fibre-reinforced PU hybrid membrane you brush or roll straight onto RCC roofs, terraces, parapets and exterior walls — built to bridge live cracks and carry a 10-year Asian Paints waterproofing warranty when top-coated.
What is it?
A water-based, fibre-reinforced elastomeric liquid membrane built on PU hybrid polymers, applied cold with a brush or roller and cured into a seamless, crack-bridging waterproof coat.
Where is it used?
Exposed RCC terraces and roofs, parapets, sunshades, and exterior vertical walls — including re-waterproofing over old IPS, sound brick-bat coba, or existing cementitious treatments.
Why use it?
Chosen when a terrace needs to keep moving with the building through Delhi’s summer-to-monsoon temperature swings without the coating splitting, and when the owner wants a documented warranty rather than a site promise.
How is it applied?
Self-primes with a 33%-water-diluted first coat, followed by two full-strength brush/roller coats on the horizontal deck; vertical walls get the same two waterproofing coats topped with two coats of Apex/Ultima exterior emulsion for colour and UV finish.
About Asian Paints SmartCare SmartCare Damp Proof Ultra
Damp Proof Ultra is the brush-applied, fibre-reinforced flagship of the SmartCare waterproofing range — built for the specific problem of an exposed Delhi NCR terrace that has to survive 45°C summer decks, sudden monsoon downpours, and the daily expansion-contraction cycle in between without the coating cracking or peeling off. It’s a liquid-applied membrane rather than a sheet system, which means it goes on with ordinary brushes and rollers, follows the deck’s slopes and drain outlets without seams, and can usually be laid straight over a sound existing terrace treatment instead of forcing a full tear-out.
For a distributor sitting between manufacturer claims and site reality, what matters about this product is that its performance is genuinely coat-count and prep dependent — the 2.5 mm crack-bridging and 10-year warranty are only as good as the substrate cleaning, the crack filling, and the coverage rate actually achieved on site. Space Arc specifies it most often on terrace waterproofing packages where the owner wants a named-brand warranty on file, not just a contractor’s word, and where the roof will later be finished in colour rather than left as bare white membrane.
The technical insight
What separates Damp Proof Ultra from a plain acrylic waterproof paint is the fibre reinforcement sitting inside a PU hybrid binder. The polymer backbone gives the cured film its elongation — rated up to 350% — so a hairline crack opening and closing with daily heat cycling on an exposed terrace doesn’t tear the membrane; the dispersed acrylic fibres add tensile backbone and abrasion resistance so the film doesn’t thin out under foot traffic or monsoon scouring. Tensile strength sits at 2.90 MPa with a specific gravity of 1.15 gm/cc, and solids run 50.5–55.9% by weight — a deliberately mid-range figure that keeps the material brushable at the specified viscosity while still building enough dry film across three coats to resist positive hydrostatic pressure up to 10 bar. That 10-bar rating matters for how it should be specified: this is a positive-side, above-deck membrane for roofs and walls, not a negative-side tanking system for basements pushing water from the wrong direction — a distinction site engineers sometimes miss when reaching for a roof product to solve a below-ground seepage problem.
Where it is used
- Exposed RCC roof slabs and terraces on residential and commercial buildings
- Parapet walls and sunshades subject to thermal-cycling cracks
- Exterior vertical walls needing a waterproof coat ahead of final paint
- Re-waterproofing over existing sound IPS or brick-bat coba without breaking it out
- Overcoating old, intact cementitious waterproofing treatments that have begun to fail
- Podium decks and terrace gardens where UV exposure and standing monsoon water are the main threats
- Building envelopes needing anti-carbonation cover to slow rebar corrosion in RCC
Key advantages
- Bridges live cracks up to 2.5 mm rather than just sealing hairline shrinkage cracks
- 350% elongation tolerates the thermal movement typical of exposed Delhi NCR terraces
- Self-priming system — no separate primer coat needed on sound RCC/plaster
- Anti-fungal, anti-algal and anti-carbonation properties in one film
- Reduces surface temperature by up to 10°C, easing heat load on the slab below
- Brush/roller application needs no specialised spray equipment on site
- Backed by a 10-year Asian Paints waterproofing warranty when correctly top-coated
- Contains no added lead, mercury, arsenic or chromium
Limitations & considerations
- Ships only in white — vertical surfaces need an Apex/Ultima topcoat for colour and full UV protection, adding a cost and labour step
- Rated for positive hydrostatic pressure only; it is not a basement tanking membrane for negative-side water pressure
- New masonry needs a full 28-day cure before application, which can clash with tight handover timelines
- Cannot be applied during rain or at temperature extremes (outside 5°C–35°C), so monsoon-season scheduling needs a real weather window
- Warranty is conditional on the specified 3-coat system, correct dilution and drain detailing — shortcuts on any of these can jeopardise the claim
- Needs periodic washing every six months to clear algal/fungal growth and keep the anti-fungal properties working
Selection & best practice
Treatment starts below the membrane, not with it: let new masonry cure a full 28 days, strip every trace of old bitumen by wire brush or high-pressure water jet, and hammer-sound the deck to find hollow patches before repairing them with polymer-modified mortar. Cracks up to 3 mm get filled with Asian Paints Crack Seal first — Damp Proof Ultra is a membrane, not a filler. On the terrace itself, apply the self-priming first coat diluted 33% with water, then two undiluted waterproofing coats by brush or roller, holding to the 4–6 hour recoat window and the forced coverage of roughly 10 sq ft/litre — skimping on coverage to stretch a pail is one of the most common reasons a “waterproofed” terrace leaks the following monsoon. Always run the membrane parapet-to-parapet so the whole roof is enveloped as one sheet, and carry it at least 6 inches down inside every drain outlet, since edges and drain collars are where most terrace leaks actually originate. On vertical walls, follow the two waterproofing coats with two coats of Apex or Ultima diluted 40%, which gives both the UV-stable colour finish and the topcoat the warranty requires.
Specifications
| Chemistry / System | PU hybrid polymer with reinforcing acrylic fibres — fibre-reinforced elastomeric liquid-applied membrane |
| Form / Colour | Ready-to-use viscous liquid, white, water-based |
| Specific Gravity | 1.15 gm/cc |
| Solids by Weight | 50.5% – 55.9% |
| Tensile Strength | 2.90 MPa |
| Elongation at Break | Up to 350% |
| Crack-Bridging Ability | Up to 2.5 mm |
| Hydrostatic Pressure Resistance | Up to 10 bar (positive side) |
| Pack Sizes / Shelf Life | 4 L and 20 L; 3 years from manufacture in sealed containers |
Industry use cases
Residential terraces & builder floors, Delhi NCR
Exposed RCC roof decks facing monsoon ponding and peak-summer heat, waterproofed and then top-coated with Apex/Ultima for a finished, coloured terrace.
Multi-storey apartment complexes
Parapet walls and sunshades that develop hairline cracking from daily thermal cycling, where the 2.5 mm crack-bridging keeps repeat call-backs down.
Renovation of ageing IPS/brick-bat coba terraces
Applied directly over sound existing IPS or brick-bat coba, avoiding the cost and disruption of breaking the old treatment out.
Commercial podium decks & terrace gardens
Positive-side waterproofing under planters and paving where UV exposure and standing water are the main long-term threats to the slab.
Warranty-backed applicator projects
Jobs run by an authorised applicator like Space Arc Engineering, where the 3-coat system and drain detailing are followed precisely to keep the 10-year warranty valid.
Frequently asked questions
Can Damp Proof Ultra be left as the final white finish, or does it always need a top coat?
How many coats does a terrace actually need, and does skipping one save money?
Can it go straight over our old IPS or brick-bat coba without removing it?
What’s the actual difference between this and the standard SmartCare Damp Proof?
Is the 10-year warranty from Asian Paints, or from whoever applies it?
Our terrace already has active, moving cracks — will this handle it on its own?
How we position Asian Paints SmartCare SmartCare Damp Proof Ultra
Damp Proof Ultra sits as the flagship brush-applied membrane in Asian Paints’ SmartCare waterproofing range, designed to work as a system rather than standalone: Asian Paints Crack Seal handles pre-treatment of cracks up to 3 mm, and Apex or Ultima exterior emulsion supplies the UV-stable colour topcoat on vertical walls that the warranty is built around. Within the same brand, the standard SmartCare Damp Proof remains the more basic, lower-cost option for owners who don’t need the fibre reinforcement or the full warranty backing. Outside the Asian Paints range, specifiers comparing brush-applied elastomeric terrace membranes commonly look at Fosroc’s Brushbond Roofguard, which occupies a similar fibre-reinforced acrylic elastomeric category for exposed roofs and walls. As an authorised Asian Paints SmartCare distributor and applicator across Delhi NCR, Space Arc Engineering specifies and installs Damp Proof Ultra as part of full terrace waterproofing packages, with the prep, coat counts and drain detailing needed to keep the manufacturer warranty intact.
Fosroc Brushbond Roofguard — A specifier who needs ASTM-documented UV and elongation test data for a tender specification, rather than a brand warranty, might choose Fosroc Brushbond Roofguard instead — it’s a comparable fibre-reinforced acrylic elastomeric coating built for the same exposed terrace and wall category.
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Authorised distribution, technical advice & professional application across Delhi NCR and Pan-India.