Fosroc Nitoflor UR105
A clear, fast-drying single-component polyurethane seal coat that hardens, dust-proofs and protects concrete and cementitious floors.
What is it?
A ready-to-use, single-component (moisture-curing) polyurethane seal coat from Fosroc’s Nitoflor industrial-flooring range. It dries to a clear, tough, abrasion- and chemical-resistant film over concrete and cementitious surfaces.
Where is it used?
Warehouses, light-to-medium industrial sheds, godowns, workshops, garages, basement and parking decks, showrooms and commercial floors across Delhi NCR and pan-India where a hard-wearing, easy-clean, transparent floor seal is needed.
Why use it?
It converts dusty, porous concrete into a sealed, durable, low-maintenance surface, resists everyday chemicals and household cleaners, and cures fast so floors return to service quickly with minimal downtime.
How is it applied?
Applied straight from the pack by brush, roller or spray onto clean, sound, dry concrete in thin coats; no on-site mixing of hardener is required. It moisture-cures to a clear protective film, typically over two coats.
About Fosroc Nitoflor UR105
Fosroc Nitoflor UR105 is a single-component polyurethane (PU) seal coat engineered to upgrade bare concrete and cementitious floors into hard-wearing, sealed surfaces. It belongs to Fosroc’s well-established Nitoflor family of flooring products, which spans seal coats, self-smoothing screeds, heavy-duty toppings and decorative finishes. UR105 sits at the seal-coat / protective-topcoat end of that range: rather than building thickness like a screed, it penetrates and seals the surface to lock down dust, close fine porosity and lay down a clear, abrasion- and chemical-resistant film.\n\nThe defining commercial advantage of UR105 is that it is a one-component, ready-to-use product. There is no base-and-hardener weighing or mixing on site, which removes a common source of error for applicators and speeds up the job. It is a moisture-curing polyurethane, meaning it reacts with ambient humidity to crosslink into a tough film, and Fosroc highlights its rapid drying, high transparency, high physical and chemical resistance, and resistance to household cleaning products. The clear finish is particularly useful where the natural look of the concrete or a coloured/cured slab is to be retained while still gaining protection.\n\nFor Indian contractors, consultants and facility owners, UR105 is best understood as a maintenance and protection coat for sound concrete floors, not a structural repair or a high-build resin floor. Where the substrate is mechanically damaged, contaminated with oil, or needs heavy chemical or thermal duty, a different Nitoflor system (an epoxy or polyurethane-cement topping) is the correct choice. Used in the right setting, UR105 is a cost-effective way to extend floor life, cut cleaning effort and dust nuisance, and improve the appearance of warehouse, parking and light-industrial concrete. Because Space Arc Engineering is an authorised Fosroc distributor and applicator for Delhi NCR and pan-India, we can confirm current pack sizes, region-specific coverage figures and the latest Technical Data Sheet (TDS) values before you specify or order.
The technical insight
The chemistry is the key to specifying UR105 correctly. As a single-component, moisture-curing polyurethane it cures by reacting with atmospheric and substrate humidity, so two job-site conditions matter most: the substrate must be properly dry and free of standing moisture (excess water or a high water-vapour transmission slab can cause bubbling or pinholing as the film cures), yet there must be enough ambient humidity for the cure to complete. Application during the right part of the day, avoiding monsoon-saturated slabs and freshly cast green concrete, is therefore essential in Indian conditions. Because it is a thin-film seal coat rather than a high-build resin, it follows the texture of the slab and will not bridge cracks, level undulations or correct a poor power-float finish — surface preparation determines the result. Substrate strength, a sound laitance-free surface, and correct priming/saturation of porous concrete govern adhesion and final transparency. The product is supplied ready to use, so the practical variables left to the applicator are surface prep, film thickness per coat, number of coats and respecting the overcoat and full-cure windows. Exact coverage, dry/recoat times and full chemical-resistance tables vary by region and batch; these must be read off the current country-specific Fosroc TDS rather than assumed, and Space Arc can supply the India-applicable sheet on request.
Where it is used
- Sealing and dust-proofing bare concrete floors in warehouses and storage godowns
- Protective clear seal coat for light-to-medium industrial workshop and assembly floors
- Hardening and easy-clean finish for garages, service bays and vehicle parking decks
- Sealing basement, podium and commercial common-area concrete floors
- Showroom, retail and commercial floors where a clear, natural-concrete look is preferred
- Refurbishment of dusty, porous existing concrete to reduce cleaning effort and abrasion wear
- Protective topcoat over cured/coloured concrete to preserve appearance while adding durability
Key advantages
- Single-component and ready to use — no base/hardener mixing on site, reducing application error
- Rapid drying, allowing faster return to service and shorter project downtime
- Clear, high-transparency finish that preserves the natural look of the concrete
- Good abrasion resistance that hardens the surface and reduces wear
- Resists a range of chemicals and common household cleaning products for easy maintenance
- Seals surface porosity to prevent dusting and the penetration of oils and liquids
- Simple brush, roller or spray application suited to large floor areas
- Backed by Fosroc’s established Nitoflor flooring system and pan-India technical support
Limitations & considerations
- Thin-film seal coat — does not build thickness, bridge cracks or level uneven or poorly finished slabs
- Not a structural repair product; the substrate must already be sound, clean and dry
- Moisture-sensitive during cure — damp, green or high-vapour-transmission concrete can cause bubbling or pinholing
- Not intended for severe chemical, thermal-shock or very heavy mechanical duty — use an epoxy or PU-cement Nitoflor system instead
- Surface preparation is critical; results depend heavily on cleaning, grinding/priming and slab condition
- Clear film offers limited UV/colour stability in prolonged direct sunlight compared with pigmented aliphatic systems — confirm suitability for exposed external areas
- Exact coverage, recoat and full-cure times are region/batch specific and must be taken from the current Fosroc TDS, not assumed
Selection & best practice
Treat UR105 as the protection coat at the end of a well-prepared floor, not a fix for a bad one. Mechanically prepare the concrete — grind or captive-shot-blast to remove laitance, curing compounds, oil and surface contamination — then ensure the slab is structurally sound and properly dry; check for rising damp on ground-bearing or basement slabs before coating. Prime or saturate very porous concrete as advised on the TDS so the seal film bonds and cures uniformly. Apply in thin, even coats by brush, roller or spray, work to a wet edge to avoid lap marks, and respect the overcoat window between coats and the full-cure time before reopening to traffic. Avoid application onto monsoon-wet, freshly placed green concrete, or in conditions outside the TDS limits. Always order against the current India-applicable Fosroc Technical Data Sheet for the exact coverage, number of coats, dry/recoat times and chemical-resistance data — Space Arc Engineering can supply the latest sheet and a site-specific recommendation.
Specifications
| Product | Fosroc Nitoflor UR105 |
| Product range | Nitoflor industrial flooring (seal coat / protective topcoat) |
| Chemical type | Single-component polyurethane (moisture-curing) |
| Components | One component — ready to use, no on-site mixing |
| Finish / appearance | Clear, high-transparency film |
| Primary function | Seals, dust-proofs and protects concrete with an abrasion- and chemical-resistant coat |
| Substrates | Concrete and cementitious surfaces (sound, clean, dry) |
| Application method | Brush, roller or spray |
| Typical build-up | Generally two coats (confirm on current TDS) |
| Drying | Rapid drying / fast return to service (exact times per TDS) |
| Chemical resistance | Resistant to many chemicals and household cleaning products (see TDS chemical-resistance table) |
| Coverage | Region/substrate dependent — confirm on current Fosroc TDS |
| Pack size | Confirm current pack size with Space Arc / Fosroc TDS |
| Standards | Refer to current Fosroc TDS / project specification (no specific standard claimed on the public product page) |
Industry use cases
Warehousing & logistics
Sealing large bare-concrete warehouse and godown floors to stop dusting, ease pallet-jack and forklift movement, and cut daily cleaning effort.
Light & medium industry
Clear protective seal on workshop, assembly and packing-hall floors where a hard, easy-clean surface is needed without a full high-build resin floor.
Automotive & parking
Hardening and protecting garage, service-bay and parking-deck concrete against tyre traffic, oil spotting and abrasion.
Commercial & retail
Showroom, basement and common-area floors where owners want the natural concrete look preserved with a durable, low-maintenance clear seal.
Refurbishment / FM
Upgrading tired, dusty existing concrete in operating facilities, using the fast-drying, low-mixing nature of UR105 to minimise shutdown.
Frequently asked questions
What exactly is Fosroc Nitoflor UR105?
Is UR105 a single-component or two-component product?
Where should Nitoflor UR105 be used — and where not?
How many coats are needed and what is the coverage?
Can UR105 be applied over damp or new concrete?
How do I buy Nitoflor UR105 in Delhi NCR or pan-India?
How we position Fosroc Nitoflor UR105
Within the Fosroc flooring portfolio, Nitoflor UR105 is positioned as a clear, single-component PU seal coat — the simple, fast, protect-and-dust-proof option for sound concrete. It is closely related to other Nitoflor seal coats such as Nitoflor FC110 (clear single-component PU seal coat for warehousing, garages and light industry) and the polyurethane sealer Nitoflor PU200; where a coloured or higher-build finish is required, Fosroc’s epoxy seal coats (e.g. the Nitoflor FC range) or self-smoothing/heavy-duty toppings and polyurethane-cement systems (such as the Nitoflor Floorcrete PU family) are the step up. Pair it with appropriate Fosroc surface preparation and priming products for best adhesion. Against competitor systems, credible alternatives in the Indian market include Sika (Sikafloor PU and curing/seal products), MBCC/Master Builders Solutions (MasterTop floor coatings), Dr. Fixit / Pidilite (industrial floor coatings) and STP Limited — each offers single-component or two-component PU and epoxy floor seals in a comparable class. The right choice depends on substrate condition, chemical and mechanical duty, desired appearance and downtime tolerance. As an authorised Fosroc distributor and applicator, Space Arc Engineering specifies UR105 where its clear, low-mixing, fast-drying profile genuinely fits, and recommends an alternative Fosroc system honestly when the service demands more — so the floor, not the brand, drives the decision.
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