What Is Faber B1 700? A Fast-Drying, Stain-Proof Sealer for Natural Stone
Faber B1 700 is a fast-evaporating, stain-proof impregnating sealer formulated by Faber Italy for natural stone and terracotta. Instead of sitting on top of the surface like a film, it penetrates below the stone’s surface to repel oil, water, and everyday stains while allowing the stone to breathe naturally. Because it dries in around 30 minutes, it’s one of the quickest products in the Flagstone Fix Protection range to apply and put back into use.
What Surfaces Is B1 700 Formulated For?
B1 700 is formulated for a wide range of natural stone and quarried surfaces, including marble, limestone, sandstone, slate, granite, porphyry, quartzite, terracotta, travertine, and quartz-resin agglomerates. This breadth makes it a practical choice for contractors and applicators working across mixed-material projects: a single product for a renovation that combines, say, a sandstone terrace with a marble threshold rather than switching sealers surface by surface.
Because it’s designed to preserve the stone’s original look, B1 700 is particularly well suited to natural-finish surfaces where the client wants protection without any visible change to colour, sheen, or texture.
How B1 700 Protects Stone Without Changing Its Look
B1 700 works as a hydro-oleophobic impregnator; it creates an internal barrier within the stone’s pores that repels both water-based and oil-based liquids (think spilt wine, cooking oil, or coffee) before they can soak in and stain. Because the treatment sits inside the stone rather than on top of it, there’s no surface film, no colour shift, and no change to the stone’s natural texture. The formula is also UV-stable, which helps it resist breaking down under sun exposure on exterior applications, and it remains breathable, so trapped moisture can still escape rather than building up beneath the surface an important distinction from a true waterproofing film, which can trap damp and cause long-term damage.
Why the Fast-Drying Formula Matters
B1 700 is touch-dry in around 30 minutes and ready for light foot traffic within 2–3 hours, depending on ventilation and temperature. For a professional applicator, that turnaround can be the difference between finishing a job in a single site visit and having to schedule a second one and for a homeowner or facility manager, it means a treated floor, countertop, or terrace is back in use the same day rather than roped off overnight. On highly absorbent stone, a second coat applied around 30 minutes after the first is recommended to ensure even, full-depth protection.
How to Apply B1 700
B1 700 is applied to a clean, dry surface using a brush, lambswool applicator, roller, or cloth, at ambient temperatures between roughly 5°C and 40°C. Coverage typically runs 10–15 square metres per litre, though this varies with the stone’s porosity; a dense, polished granite will need less product than a porous, tumbled limestone. As with any impregnating sealer, a small test patch on an inconspicuous area is good practice before treating a full surface, particularly on stones that haven’t been sealed before.
- Apply to a clean, fully dry surface for the sealer to penetrate properly
- Work in manageable sections so excess product can be removed before it dries on the surface
- Allow a second coat on highly absorbent stone, roughly 30 minutes after the first application
- Keep the treated area free of foot traffic and moisture for the first few hours after application
A Typical Use Case: Renovation and Restoration Timelines
Consider a common scenario on an Indian renovation project: a marble or sandstone floor has just been polished, and the client wants it sealed and back in use as quickly as possible, ideally within the same day. Many impregnating sealers require an overnight cure before any foot traffic is allowed, which can add a full day to a project schedule and, on a commercial site, an extra day of lost use. Because B1 700 is touch-dry in roughly 30 minutes and can typically take light traffic within 2–3 hours, it’s often specified precisely for these tight-turnaround jobs: a lobby that can’t be closed for more than a few hours, or a home where the family needs the kitchen back in use by evening. This makes it as much a scheduling decision as a technical one for contractors quoting a job.
Where B1 700 Fits in the Flagstone Fix Protection Range
Flagstone Fix’s Protection category includes more than 40 sealers and impregnators, each formulated for a specific stone type, finish, or use case. B1 700 is the range’s fast-drying, natural-finish specialist. While FS Nano Power Protector is built for deep, long-cure protection on low-porosity polished stone, and FS Enhance & Protect+ adds colour enhancement alongside stain protection, B1 700 is the product to reach for when the priority is quick turnaround with zero visible change to the stone. Applicators and contractors quoting a job on a tight schedule, or homeowners who don’t want their marble or sandstone to look any different after sealing, are the clearest fit.
Frequently Asked Questions
Is B1 700 suitable for outdoor use?
Yes. B1 700 is UV-stable and is formulated for both interior and exterior natural stone and terracotta, making it suitable for terraces, facades, and other exposed surfaces as well as indoor floors and countertops.
Will B1 700 change how my stone looks?
No. B1 700 is designed to maintain the stone’s original appearance; it does not add gloss, darken the surface, or leave a visible film. It works below the surface, so treated stone looks the same as untreated stone, just protected.
How long does B1 700 protection last?
Like all impregnating sealers, longevity depends on the stone’s porosity, foot traffic, and exposure to weather or cleaning chemicals, so it’s best to check the Faber Italy technical data sheet for your specific surface and reapply as recommended rather than assuming a fixed lifespan.
