Dr. Fixit FiberTite
The KEE single-ply membrane built to outlast PVC and TPO at half the thickness, welded seam by seam into one continuous roof.
What is it?
A factory-made, 0.9 mm single-ply preformed roofing membrane built on KEE (Ketone Ethylene Ester) polymer technology, reinforced internally with a densely knitted polyester fibre scrim.
Where is it used?
Large-span metal and RCC industrial roofs — factory sheds, warehouses, F&B and dairy plants, data centres, automobile and electronics units, airports, and roof-replacement projects.
Why use it?
Roughly half the thickness of comparable PVC or TPO sheets yet engineered to match or exceed their service life, with strong UV, chemical, grease and oil resistance plus FM/UL-grade fire and wind performance.
How is it applied?
Rolled out over metal decking, rigid insulation or an approved substrate, then either mechanically fastened with fasteners and stress plates or fully bonded with adhesive; field seams are fused with hot-air welding equipment into a monolithic sheet.
About Dr. Fixit FiberTite
Dr. Fixit FiberTite is not a homegrown Pidilite formulation in the way most of the Dr. Fixit range is — it is the Indian face of a well-established American single-ply roofing technology, brought into Pidilite’s large-projects portfolio for industrial and institutional roofing work. The membrane is built on KEE, Ketone Ethylene Ester, a thermoplastic that stays flexible over decades in a way plasticised PVC struggles to once its plasticisers start migrating out under UV and heat. A high-tenacity polyester fibre scrim sits inside the sheet for tensile and tear strength, primed with a proprietary adhesive coat so the KEE face and back coatings bond directly to the fabric rather than just sitting on top of it. That construction is significant enough that 36 mil FiberTite became the reference membrane used to write ASTM D 6754-15, the American standard for KEE-based sheet roofing — this is not a me-too product chasing an existing spec, it helped set it.
For a specifier or facility owner in India, what this means practically is a roofing option that sits above the bituminous and liquid-applied systems most of the market defaults to. It ships as 2.5 m x 36 m rolls, gets fixed either mechanically or with adhesive depending on the deck and wind-uplift design, and the real strength of the system comes at the seams: hot-air welding fuses adjoining sheets into one continuous, homogeneous membrane instead of relying on lap-glued or taped joints that are usually the first thing to fail on a conventional single-ply or built-up roof. Space Arc positions FiberTite specifically for large-project roofing — PEB warehouses, process plants, and re-roofing work — rather than for the residential terraces and balconies that most Dr. Fixit products are formulated for.
The technical insight
The chemistry distinction that matters here is KEE versus conventional PVC. Plasticised PVC membranes rely on internal plasticisers to stay flexible; over years of UV exposure and thermal cycling those plasticisers slowly migrate out, and the sheet stiffens, shrinks at the edges, and becomes more prone to seam and crack failure. KEE is a different polymer chemistry originally developed specifically to avoid that failure mode, and FiberTite is built on it — which is also why the product carries genuine chemical, grease and oil resistance rather than just UV resistance, a property that matters directly in dairy and F&B plant roofing where cooking oils, grease-laden exhaust and cleaning chemicals land on the roof surface over time. The other detail worth flagging to a technical audience is the seam method: hot-air welding thermally fuses the top and bottom sheet at the overlap into a single continuous polymer, which is why factory seam strength on the datasheet (1955 N, ASTM D751 Grab Method) actually exceeds the field breaking strength of the sheet itself — the weld is stronger than the material around it, the opposite of how adhesive-lapped membranes typically behave.
Where it is used
- Large-span metal and pre-engineered building (PEB) roofs on factory sheds and warehouses
- F&B and dairy processing plant roofs exposed to grease, oil and cleaning-chemical residue
- Data centre and electronics facility roofs where fire rating and puncture resistance are specified
- Automobile manufacturing and chemical/petrochemical plant roofing
- Airport terminal, hangar and large institutional roof structures
- Roof-replacement and re-roofing projects over existing metal or built-up roofs
- Insulated metal roofing systems, laid over compatible rigid insulation boards
- Large concrete (RCC) roof decks on industrial and commercial buildings
Key advantages
- Achieves comparable or longer field life than PVC/TPO at roughly half the sheet thickness
- Hot-air welded seams fuse into one continuous membrane rather than relying on lap-glued joints
- Backed by third-party approvals — FM Global, Underwriters Laboratory (including UL fire resistance), and BBA certification
- Strong resistance to grease, oil and general chemical exposure, relevant for F&B and industrial plants
- Non-winking, non-shrinking fabric keeps the roof surface flat and reduces ponding-related wear
- Wind and hail resistance suited to large, exposed industrial roof spans
- Low life-cycle cost versus PVC/TPO once maintenance and re-roofing cycles are factored in
- Base KEE technology has a 30+ year global performance track record on comparable roofs
Limitations & considerations
- Application requires trained crews with hot-air welding equipment — this is not a brush-or-roll product for casual site labour
- Built for large-project roofing; it is not the right or economical choice for a house terrace, balcony or bathroom, where Dr. Fixit’s residential range fits better
- The datasheet does not publish a per-sqm cost or fixed coverage rate — actual material quantity depends on roof geometry, penetrations and fastening pattern, so it needs a project-specific survey and BOQ
- System performance depends heavily on correct substrate preparation, fastener spacing per wind-uplift design, and weld quality — poor installation can compromise an otherwise sound membrane
- Being an imported, specialised technology, it sits at a higher price point than conventional bituminous or acrylic roof coating systems
- Supply is oriented around Pidilite’s large-projects channel rather than retail hardware stores, so lead time and stockist availability need to be checked before committing to a schedule
Selection & best practice
Start with a roof survey, not the roll: confirm deck type (metal or RCC), existing insulation, drainage falls and penetration count before ordering, because FiberTite’s fixing pattern — mechanically fastened versus fully adhered — is a wind-uplift design decision, not a site preference. Substrate must be clean, dry, structurally sound and free of loose fasteners or sharp burrs that could puncture the sheet. Use a trained applicator crew for the hot-air welding — Space Arc test-welds and probes seams before sign-off, since seam integrity is what the whole system’s performance rides on. Follow Dr. Fixit’s detailed FiberTite application method statement (referenced on the datasheet) for fastener spacing, lap widths and termination detailing at parapets, skylights and roof penetrations, and check insulation compatibility before laying over an insulated metal roofing system.
Specifications
| Thickness | 0.9 mm ± 0.1 mm (ASTM D 751) |
| Breaking Strength | 1499 N, Procedure B-Strip (ASTM D 751) |
| Elongation at Break | 18% (ASTM D 751 / ASTM D 412) |
| Tear Strength | 445 N, Procedure B-Tongue Tear (ASTM D 751) |
| Tensile Strength | 40 MPa / 8500 psi (ASTM D 412 / ASTM D 882) |
| Hydrostatic Resistance | 4.8 MPa (ASTM D 751) |
| Factory Seam Strength | 1955 N, Grab Method (ASTM D 751) |
| Accelerated Weathering (Xenon) | >5000 hrs, no cracking or crazing (ASTM G 155) |
| Packaging & Shelf Life | 2.5 m x 36 m roll (90 sqm/roll); 24 months in covered, secured storage |
Industry use cases
Industrial PEB warehouse
Re-roofing an existing metal-sheeted warehouse in an industrial park with mechanically fastened FiberTite and hot-air welded seams to close out long-standing leak points at laps and ridges.
Dairy / F&B processing plant
Specified for roof areas over processing and packing lines where grease-laden exhaust and wash-down chemicals rule out standard bituminous coatings.
Data centre facility
Chosen where the facility’s insurer or design consultant requires FM Global or UL-rated roofing as part of the fire and risk-management specification.
Airport hangar / terminal roof
Used on large, exposed roof spans where wind and hail resistance and long-term dimensional stability matter more than upfront material cost.
Chemical / petrochemical plant
Applied where roof surfaces face periodic exposure to chemical fumes and incidental spillage, and standard membranes degrade faster than the plant’s maintenance cycle allows.
Frequently asked questions
Is FiberTite suitable for my house terrace, or is it only for factories?
How is FiberTite different from a regular PVC or TPO roofing membrane?
Can it be laid directly over our existing metal roof, or does the old roof need to come off?
Is it glued down or welded — what does installation actually involve?
What certifications does FiberTite carry, and do they mean anything for my project’s insurance or compliance needs?
What size does it come in, and how do we work out how much we need?
How we position Dr. Fixit FiberTite
Within the Dr. Fixit stable, FiberTite sits in a different tier from the products most homeowners know. Pidifin 2K and Raincoat WPC/Classic cover bathroom and external-wall waterproofing on residential jobs, Pidiproof LW+ is an integral admixture for concrete and mortar, and Crack X Shrinkfree handles fibre-reinforced crack repair — all formulated for RCC residential and small-commercial work. FiberTite, by contrast, is Dr. Fixit’s entry into large-project single-ply roofing, aimed at metal and RCC industrial roofs where the specification calls for FM/UL-approved, chemically resistant, weldable membrane systems rather than a coating or admixture. On the market more broadly, the closest comparison isn’t really within Dr. Fixit’s own catalogue at all — it’s against other single-ply systems like conventional PVC or TPO roofing sheets, where FiberTite’s KEE chemistry is the point of differentiation. Fosroc’s large-roof offerings run on a different chemistry entirely — bituminous and liquid-applied waterproofing systems such as their Proofex range — so there isn’t a genuine single-ply KEE equivalent in the Fosroc lineup to point a specifier toward; where a project genuinely calls for a bituminous or liquid-applied roofing system instead of a preformed membrane, that’s a real Fosroc alternative worth discussing with Space Arc’s technical team rather than a like-for-like substitute.
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