Product Overview

MC-Nafuplan WPS is a single-component, factory-premixed, hydraulic waterproof plugging compound from MC-Bauchemie consisting of a specially formulated blend of rapid-hardening cements, reactive mineral fillers, and chemical accelerators that, when mixed with the minimum necessary water by hand to a stiff, non-crumbling dough consistency, sets rock-hard within 30 to 90 seconds (adjustable by water addition — less water produces faster set) and forms a dense, waterproof cementitious plug directly bonded to the concrete or masonry substrate. The defining performance characteristic of MC-Nafuplan WPS is its ability to stop active running water — not just weeping damp — by a technique requiring only the product, water, and hands: the dry powder is measured out (typically one full trowel per repair point), wetted rapidly to a non-sticky dough (10 to 15 seconds of hand mixing), compressed into a ball, immediately pressed firmly into the prepared chase or void at the leak point, held under hand pressure for 30 to 60 seconds while the product sets against the water pressure, and then released — the set plug holds against the hydrostatic pressure without the need for continued manual support. This working method requires no drilling, no injection pump, no mixing machine, no chemical injection cartridge, and no specialist training — it is a first-response emergency waterproofing material that can be applied by any site operative who has been given a 5-minute briefing on the technique. The distinction between MC-Nafuplan WPS and polyurethane injection grouting (MC-Injekt 2K) is a practical one: injection grouting is superior for treating crack leaks and joint leaks where the water path is inaccessible from the surface (deep in the substrate, or through a hairline crack that cannot be chased out to a workable width); MC-Nafuplan WPS is superior for treating accessible leak points — visible holes, voids, construction joint gaps, pipe penetrations, and cracks that can be widened by chasing to a 20 to 30 mm depth — and for emergency first response before specialist injection equipment arrives on site. Space Arc Engineering supplies MC-Nafuplan WPS for waterproofing contractors, civil maintenance engineers, and building owners requiring emergency waterproofing supplies in Ghaziabad, Delhi NCR, Noida, and Uttar Pradesh.

Applications

• Basement retaining wall active leak plugging — pressing MC-Nafuplan WPS into the active water leak points in basement concrete walls where water is entering through cracks, construction joints, tie bolt holes, and pipe penetrations — stopping the immediate water ingress to allow subsequent area waterproofing with MC-Protect 2K or MC-Nafuplan 2K to proceed on a non-flowing substrate
• Tunnel lining water ingress stopping — plugging active water inflows through cracked tunnel concrete lining sections, construction joint voids, and drainage failure points in cut-and-cover tunnels, metro tunnels, and railway tunnels — MC-Nafuplan WPS provides a rapid first response to control water ingress while the full injection grouting remediation is planned and executed
• Water tank and reservoir repair — stopping active leaks through the walls, floor, and pipe penetrations of reinforced concrete water storage tanks, overhead water tanks, underground sumps, and service reservoirs where the tank needs to continue operating during the repair and the leak point must be plugged from the inside (negative-side) while water pressure is present in the tank
• Culvert and drainage structure repair — plugging active water inflows through cracked culvert barrel concrete, joint voids, and spigot-and-socket pipe joint failures in road drainage, railway culverts, and stormwater drainage structures where the drainage function must be restored rapidly during the monsoon season and injection equipment is not available or accessible
• Construction joint emergency sealing — stopping water entry through construction joints in freshly concreted basement raft slabs and retaining walls where the waterstop has failed or was incorrectly placed, and water is entering through the joint before the full waterproofing treatment can be implemented — MC-Nafuplan WPS stops the active flow immediately, allowing the follow-up injection grouting to proceed into a controlled (non-flowing) environment
• Pipe penetration seal repair — plugging the annular gap around pipe penetrations through concrete walls and slabs in basement plant rooms, utility tunnels, and building services areas where the original sealant or core fill has deteriorated and water is entering around the pipe — press MC-Nafuplan WPS into the annular gap, hold, and finish flush with the concrete face

Key Advantages

• No equipment needed — stops active running water leaks by hand application without drilling equipment, injection pump, mixing machine, or specialist tools — any trained site operative can apply using only the product, clean water, and their hands — enables emergency waterproofing response in locations and situations where specialist equipment cannot reach or where the equipment has not yet arrived on site
• Sub-60-second set time — sets rock hard within 30 to 90 seconds of hand mixing and application — faster than the typical rate of water inflow through a construction joint gap under moderate hydrostatic pressure — the short set time is the critical performance property that allows the plug to form before the water flow dislodges the material
• Sets against running water — the hydraulic cement chemistry generates sufficient expansion force during initial set to maintain plug integrity against the water pressure pushing from behind — tested to resist hydrostatic water pressure appropriate for typical basement and tunnel applications
• Single-component powder format — easy to store, transport, and handle on site — no two-component mixing ratio errors or cartridge wasting — bags can be opened, measured by trowel, and mixed by hand in 10 to 15 seconds — ideal for emergency situations where speed is critical
• Versatile working consistency — water addition can be varied from minimum (stiff crumb — very fast set, for overhead or vertical fast-flow applications) to slightly higher (smooth dough — slightly slower set, for more working time to press into complex profiles) — the operative adjusts the water addition to match the urgency and geometry of the leak point
• Compatible with subsequent waterproofing systems — the set MC-Nafuplan WPS plug is fully compatible as a substrate for subsequent application of cementitious waterproofing coatings (MC-Protect 2K, MC-Nafuplan 2K) and injection grouting (MC-Injekt 2K) — it serves as the first step in a two-stage waterproofing remediation sequence rather than a standalone permanent repair