About MC-Bauchemie MC-Plan 315 PA-IN

{“name”:”MC-Plan 315 PA-IN”,”slug”:”mc-plan-315-pa-in”,”brand”:”MC-Bauchemie”,”realProduct”:”yes”,”officialSource”:”https://www.mc-bauchemie.in/products/waterproofing/membrane-waterproofing-system/mc-plan-315-pa-in.html”,”category”:”waterproofing”,”metaTitle”:”MC-Plan 315 PA-IN | Pre-Applied HDPE Membrane | Space Arc”,”metaDescription”:”MC-Plan 315 PA-IN is a 1.5mm pre-applied HDPE membrane that fully bonds to poured concrete, blocking lateral water migration in basements and tunnels.”,”heroSubtitle”:”A pre-applied, fully bonded HDPE membrane that locks onto poured concrete so water can’t travel sideways from a puncture — built for rafts, basements and tunnel linings.”,”glance”:{“whatIsIt”:”A 1.5mm, sand-finished HDPE sheet membrane with a self-adhesive, particulate-coated face that mechanically and chemically bonds into concrete as it cures, rather than sitting loose against it.”,”whereUsed”:”Below-grade substructure work laid before the concrete pour — raft foundations, basement retaining walls (confined blindside conditions), cut-and-cover tunnel linings, and underground tanks or pump houses.”,”whyUse”:”Near-zero permeability to moisture and gas, resistance to ground chlorides/sulphates/salts, and — because it fuses to the concrete rather than floating free — a puncture stays local instead of letting water travel metres before it surfaces.”,”howApplied”:”Unrolled and loose-laid on horizontal blinding with the white HDPE face down, 75mm overlaps with full liner removal and roller consolidation at laps; on confined vertical faces it’s mechanically fixed at 600mm centres in a zig-zag pattern.”},”about”:”MC-Plan 315 PA-IN is MC-Bauchemie’s pre-applied, fully bonded HDPE sheet membrane, built specifically for below-grade waterproofing that goes down before the concrete does. Unlike a conventional post-applied membrane that simply sits between soil and structure, MC-Plan 315 PA-IN is engineered to key into the fresh concrete poured directly over it — its sand-finished, self-adhesive face fuses with the pour as it cures, leaving no continuous water pathway between membrane and structure. The 1.5mm HDPE core carries near-zero permeability to moisture and gas, and the system is rated resistant to the chlorides, sulphates and aggressive ground salts common in Indian sub-soil conditions.\n\nThat fully-bonded behaviour matters most on raft foundations, basements and cut-and-cover tunnel sections — the substructure work Space Arc sees most often across Delhi NCR’s high water-table pockets and similarly wet sites elsewhere in India. On these jobs waterproofing goes in before the RCC pour, often with rebar cages already fixed and timelines tight, so a system that installs by unrolling, overlapping and rolling out air pockets — no torching, no hot bitumen — fits real site sequencing. Because the membrane bonds to the concrete rather than floating loose against it, a puncture stays local instead of letting water travel and surface metres away from the actual defect, which is the single biggest practical advantage over older loose-laid sheet systems.”,”technicalInsight”:”The property worth reading twice on the datasheet is peel adhesion to concrete — 1.5 N/mm at 7 days per ASTM D903 — because that’s what separates a genuinely ‘fully bonded’ membrane from an ordinary loose-laid sheet. In a loose-laid system, water finding a pinhole can travel for metres underneath the membrane before it surfaces, turning leak-tracing on a finished basement into guesswork. Because MC-Plan 315 PA-IN’s granular face mechanically and adhesively locks to the concrete as it cures, ingress through a puncture is largely confined to that spot — consistent with its 100 psi / 7 bar, one-hour no-leakage rating under DIN 16726 / ASTM D5385. The 650% elongation (ASTM D412) and >1000N puncture resistance (ASTM E154) give it enough give and toughness to survive a rebar-heavy raft pour and minor substrate movement without losing that bond.”,”applications”:[“Pre-applied waterproofing under raft foundations, laid on blinding before the RCC pour”,”Basement retaining walls in confined blindside conditions (against piling, shuttering or plum concrete)”,”Cut-and-cover tunnel lining systems (metro, road underpass, utility tunnels)”,”Protection of underground concrete from sub-soil chemical contamination”,”Below-grade water tanks, sumps, lift pits and pump-house substructures”,”Multi-level basements on high water-table sites”,”Substructures on contaminated or chemically aggressive industrial land”,”Unconfined vertical faces (self-adhesive lap method) on cured concrete surfaces”],”advantages”:[“Near-zero permeability to moisture and gas across the HDPE core”,”Fully bonded to the concrete pour — a local puncture doesn’t become a spreading leak”,”High puncture resistance (>1000N) suited to congested rebar and raft pours”,”650% elongation gives tolerance for minor substrate movement and hairline cracking”,”Verified 7 bar / 100 psi, one-hour hydrostatic resistance for high water-table sites”,”No hot works — loose-lay, overlap and roller consolidation, not torch-welding”,”Resists ground chlorides, sulphates and salts typical of Indian sub-soil”,”Visible damage can be patched pre-pour with an oversized adhesive-tape patch”],”limitations”:[“Performance depends on housekeeping at lay-down — gaps or voids over 12mm, sharp debris, or standing water on the blinding compromise the bond”,”The ‘fully bonded’ advantage only holds if laps are done properly: full liner removal and roller consolidation, not just a loose overlap”,”Vertical confined faces need mechanical fixing at 600mm centres, which adds labour compared with a simple horizontal loose-lay”,”Cold-weather laying below normal ambient needs hot-air pre-heating of the adhesive edge at overlaps, which means extra equipment on site”,”A sheet membrane on its own doesn’t waterproof construction or movement joints — those still need dedicated waterstops or injection systems”,”The datasheet doesn’t state a maximum UV exposure window before concreting, so exposed sheet should be covered as soon as practical as standard good practice”],”bestPractice”:”Get the blinding right before the roll ever comes out — sound, smooth, free of standing water, sharp debris and any void or gap over 12mm, since the membrane’s entire fully-bonded advantage depends on intimate contact with that surface. Lay with the correct face orientation, keep overlaps to a genuine 75mm with the release liner fully peeled off (not just folded back) and roller-consolidate every lap to chase out air pockets. On confined vertical faces, hold the 600mm zig-zag fixing pattern for flatness. Walk the sheet again after the reinforcement cage goes in — that’s the last practical point to spot and patch any puncture before it’s buried under concrete for good.”,”specs”:[{“property”:”Membrane type”,”value”:”Pre-applied, fully bonded HDPE sheet membrane, sand-finished with self-adhesive face”},{“property”:”Membrane thickness”,”value”:”≥1.5 mm”},{“property”:”Tensile strength”,”value”:”≥25 N/mm² (ASTM D412-2016)”},{“property”:”Elongation at break”,”value”:”650% (ASTM D412-2016)”},{“property”:”Puncture resistance”,”value”:”>1000 N (ASTM E154-2008)”},{“property”:”Peel adhesion to concrete”,”value”:”1.5 N/mm at 7 days (ASTM D903-1998)”},{“property”:”Resistance to hydrostatic pressure”,”value”:”No water leakage at 100 psi / 7 bar for 1 hour (DIN 16726-2011 / ASTM D5385-2000)”},{“property”:”Water vapour transmission”,”value”:”0.4 ng/m².s.Pa (ASTM E96)”},{“property”:”Lap joint strength”,”value”:”1.5 N/mm² (ASTM D1876)”},{“property”:”Roll size / delivery”,”value”:”1.5mm thick, 1m x 20m roll (20 m² per roll)”}],”useCases”:[{“sector”:”Metro & tunnelling”,”detail”:”Waterproofing lining for cut-and-cover tunnel sections before the concrete pour, where a torch-free, fully bonded system suits confined excavation sequencing.”},{“sector”:”Residential high-rise”,”detail”:”Raft foundation waterproofing on multi-basement towers in high water-table pockets of Delhi NCR, laid on blinding ahead of the reinforcement cage and pour.”},{“sector”:”Commercial basements”,”detail”:”Blindside application on confined vertical faces against piling or shuttering, where post-applied access simply isn’t available once the wall is cast.”},{“sector”:”Industrial & process plants”,”detail”:”Substructure protection on sites with chemically contaminated or saline sub-soil, where the membrane’s chloride and sulphate resistance is the deciding factor.”},{“sector”:”Utility infrastructure”,”detail”:”Below-grade pump houses, sumps and lift pits needing a continuous, gas-tight barrier against sub-soil moisture ingress.”}],”faq”:[{“q”:”Is MC-Plan 315 PA-IN suitable for blindside waterproofing, where we can’t access the outer face once concrete is cast?”,”a”:”Yes — that’s its core use case. On confined vertical faces it’s fixed with its thick plastic face against the substrate (shuttering, blockwork or piling) using flat-headed mechanical fixings at 600mm centres, so it’s fully in place and bonded before the wall behind it is poured.”},{“q”:”How is this different from a torch-applied or hot-bitumen membrane?”,”a”:”There’s no flame or hot bitumen involved. MC-Plan 315 PA-IN is loose-laid and overlapped with a self-adhesive lap that’s activated by peeling off the release liner, then roller-consolidated — installation is largely a mechanical, cold-applied process except for pre-heating laps in cold weather.”},{“q”:”What happens if the membrane is punctured on site before the pour?”,”a”:”Because it’s fully bonded to the concrete, water ingress through a puncture stays largely local instead of spreading underneath the sheet. Even so, MC-Bauchemie’s guidance is to inspect the membrane after the rebar cage is fixed and patch any visible damage with an oversized adhesive-tape patch before concreting — don’t rely on the bonded design to cover for a skipped inspection.”},{“q”:”What roll size does it come in, and how much should we order?”,”a”:”Each roll is 1m wide by 20m long (20 m²) at 1.5mm thickness. Order with an allowance for the mandatory 75mm overlaps at every joint and roll end, which typically adds 5-8% over the raw plan area depending on layout.”},{“q”:”Can it be laid during winter or in colder sites?”,”a”:”Yes, down to -5°C ambient, but the datasheet specifically calls for pre-heating the adhesive edge with a hot air gun during overlapping in cold weather to get a proper lap bond — don’t skip that step below normal ambient.”},{“q”:”Does Space Arc supply and apply MC-Plan 315 PA-IN in Delhi NCR and pan-India?”,”a”:”Yes, Space Arc Engineering is an authorised MC-Bauchemie distributor and applicator and can supply the membrane along with trained application crews and site-specific detailing advice for terminations, corners and upstands.”}],”positioning”:”Within MC-Bauchemie’s own sheet-membrane range, MC-Plan 315 PA-IN sits alongside MC-Plan 216 M (a fully bonded pre-applied FPO membrane) and MC-Plan 307 SD IN (a flexible PE waterproofing membrane) — the choice between them usually comes down to substrate type and whether the job is genuinely pre-applied blindside work or a more conventional post-applied wall condition, and Space Arc’s technical team can confirm which fits a given drawing. Outside the MC-Bauchemie range, Fosroc’s Proofex Engage occupies the same pre-applied, cures-to-bond category and is a reasonable alternative to specify where a project has already standardised on Fosroc systems, or where the site’s contaminated-ground and anti-tracking requirements point toward Proofex Engage’s cross-laminated PE/PP core and cell-mesh design.”}

The technical insight

The property worth reading twice on the datasheet is peel adhesion to concrete — 1.5 N/mm at 7 days per ASTM D903 — because that’s what separates a genuinely ‘fully bonded’ membrane from an ordinary loose-laid sheet. In a loose-laid system, water finding a pinhole can travel for metres underneath the membrane before it surfaces, turning leak-tracing on a finished basement into guesswork. Because MC-Plan 315 PA-IN’s granular face mechanically and adhesively locks to the concrete as it cures, ingress through a puncture is largely confined to that spot — consistent with its 100 psi / 7 bar, one-hour no-leakage rating under DIN 16726 / ASTM D5385. The 650% elongation (ASTM D412) and >1000N puncture resistance (ASTM E154) give it enough give and toughness to survive a rebar-heavy raft pour and minor substrate movement without losing that bond.

Where it is used

• Pre-applied waterproofing under raft foundations, laid on blinding before the RCC pour
• Basement retaining walls in confined blindside conditions (against piling, shuttering or plum concrete)
• Cut-and-cover tunnel lining systems (metro, road underpass, utility tunnels)
• Protection of underground concrete from sub-soil chemical contamination
• Below-grade water tanks, sumps, lift pits and pump-house substructures
• Multi-level basements on high water-table sites
• Substructures on contaminated or chemically aggressive industrial land
• Unconfined vertical faces (self-adhesive lap method) on cured concrete surfaces

Key advantages

• Near-zero permeability to moisture and gas across the HDPE core
• Fully bonded to the concrete pour — a local puncture doesn’t become a spreading leak
• High puncture resistance (>1000N) suited to congested rebar and raft pours
• 650% elongation gives tolerance for minor substrate movement and hairline cracking
• Verified 7 bar / 100 psi, one-hour hydrostatic resistance for high water-table sites
• No hot works — loose-lay, overlap and roller consolidation, not torch-welding
• Resists ground chlorides, sulphates and salts typical of Indian sub-soil
• Visible damage can be patched pre-pour with an oversized adhesive-tape patch

Limitations & considerations

• Performance depends on housekeeping at lay-down — gaps or voids over 12mm, sharp debris, or standing water on the blinding compromise the bond
• The ‘fully bonded’ advantage only holds if laps are done properly: full liner removal and roller consolidation, not just a loose overlap
• Vertical confined faces need mechanical fixing at 600mm centres, which adds labour compared with a simple horizontal loose-lay
• Cold-weather laying below normal ambient needs hot-air pre-heating of the adhesive edge at overlaps, which means extra equipment on site
• A sheet membrane on its own doesn’t waterproof construction or movement joints — those still need dedicated waterstops or injection systems
• The datasheet doesn’t state a maximum UV exposure window before concreting, so exposed sheet should be covered as soon as practical as standard good practice

Selection & best practice

Specifications

Industry use cases

How we position MC-Bauchemie MC-Plan 315 PA-IN

Within MC-Bauchemie’s own sheet-membrane range, MC-Plan 315 PA-IN sits alongside MC-Plan 216 M (a fully bonded pre-applied FPO membrane) and MC-Plan 307 SD IN (a flexible PE waterproofing membrane) — the choice between them usually comes down to substrate type and whether the job is genuinely pre-applied blindside work or a more conventional post-applied wall condition, and Space Arc’s technical team can confirm which fits a given drawing. Outside the MC-Bauchemie range, Fosroc’s Proofex Engage occupies the same pre-applied, cures-to-bond category and is a reasonable alternative to specify where a project has already standardised on Fosroc systems, or where the site’s contaminated-ground and anti-tracking requirements point toward Proofex Engage’s cross-laminated PE/PP core and cell-mesh design.

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