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Mapei

Mapei Mapeproof One Coat Damp Proof Membrane 7kg

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Type Damp Proofing
Brand Mapei

Mapei Mapeproof One Coat Damp-Proof Membrane

Mapei Mapeproof One Coat is a two-component, single-coat epoxy damp-proof membrane designed to control residual, static and construction moisture in suitable subfloors. It creates a continuous surface moisture barrier before the installation of resilient, textile and approved wood floor coverings.

Product Description

  • Professional two-component epoxy damp-proof membrane.
  • Applied as a single continuous coat.
  • Controls residual, static and construction moisture.
  • Suitable for properly prepared cementitious and calcium sulphate-based subfloors.
  • Creates a moisture-control layer before compatible floor preparation products and floor coverings are installed.
  • Applied using a suitable trowel or roller.
  • Black colour helps the installer identify missed or insufficiently covered areas.
  • Suitable for residential, commercial and public flooring projects.

Technical Details

  • Product type: Two-component epoxy surface damp-proof membrane.
  • Number of coats: One coat.
  • Cementitious substrate moisture level: Above 75% RH and below 97% RH.
  • Calcium sulphate or anhydrite screeds: Suitable up to 90% RH on unheated substrates.
  • Application method: Trowel or roller.
  • Application temperature: From +10°C to +30°C.
  • Working time: Approximately 20–30 minutes at +23°C.
  • Light foot traffic: After approximately 5 hours at +23°C.
  • Final hardening: Approximately 24 hours at +23°C.
  • Consumption: Approximately 430–440g per m².
  • Coverage: Approximately 16m² per 7kg unit.
  • Pack size: 7kg two-component kit.
  • Part A: 4.2kg.
  • Part B: 2.8kg.
  • Mixing ratio: Part A to Part B supplied at a 60:40 ratio by weight.
  • Colour: Black.
  • Suitable substrates: Cementitious screeds, mechanically prepared concrete and suitable unheated calcium sulphate or anhydrite screeds.
  • Suitable floor coverings: Resilient, textile and approved wood floor coverings.
  • Underfloor heating: Suitable on commissioned cementitious underfloor heating systems, subject to Mapei guidance.

Key Benefits

  • Single-coat application helps reduce installation time and labour.
  • Controls moisture levels up to 97% RH on suitable cementitious substrates.
  • Creates a durable and continuous epoxy moisture barrier.
  • Protects compatible floor coverings and adhesives from residual subfloor moisture.
  • Suitable for several common subfloor types.
  • Can be applied using either a suitable trowel or roller.
  • Accepts light foot traffic after approximately five hours under standard conditions.
  • Provides approximately 16m² coverage from one 7kg unit.
  • Suitable for correctly commissioned underfloor heating systems on cementitious substrates.
  • Black colour makes it easier to check application coverage.
  • Suitable for use as part of a compatible Mapei floor preparation system.

Suitable Applications

  • Mechanically prepared power-floated concrete subfloors.
  • Prepared concrete incorporating an effective structural DPM.
  • Sand and cement screeds installed over an effective moisture barrier.
  • Cementitious subfloors with moisture above 75% RH and below 97% RH.
  • Unheated calcium sulphate or anhydrite screeds with moisture levels up to 90% RH.
  • Subfloors being prepared for compatible vinyl and other resilient flooring.
  • Subfloors being prepared for compatible carpet and textile flooring.
  • Suitable cementitious subfloors before the installation of approved wood flooring.

Surface Preparation

  • Confirm that the subfloor incorporates an effective structural damp-proof membrane.
  • The substrate must be strong, stable and suitable for the intended flooring installation.
  • Mechanically prepare dense or power-floated concrete to remove laitance and surface contamination.
  • Remove dust, loose material, grease, oil, wax, paint and curing compounds.
  • Remove any material that could prevent the membrane from bonding correctly.
  • Ensure the surface is visibly dry and free from standing water.
  • Repair cracks, damaged areas and significant surface imperfections before application.
  • Test the subfloor moisture level using an appropriate professional testing method.

Mixing and Application

  • Add the complete contents of Part B to Part A.
  • Mix thoroughly with a slow-speed mechanical mixer until a smooth and uniform mixture is produced.
  • Mix complete units to maintain the correct component ratio.
  • Do not add water, solvents or other materials.
  • Apply the mixed product immediately within its stated working time.
  • Spread evenly over the prepared substrate using a suitable trowel or roller.
  • Apply at approximately 430–440g per m² to achieve the required coverage.
  • Ensure the finished membrane is continuous and free from pinholes, gaps and thin areas.
  • Protect the applied membrane from dust, debris and site traffic while curing.
  • Allow the membrane to cure before applying compatible primers, smoothing compounds or flooring products.

Important Information

  • Mapeproof One Coat is a surface moisture-control membrane and does not replace a structural damp-proof membrane.
  • Do not use where the substrate is affected by rising damp or hydrostatic water pressure.
  • Do not apply over standing water or visibly wet surfaces.
  • Do not use on heated calcium sulphate or anhydrite screeds.
  • Do not use on heated subfloors where wood flooring will be installed.
  • Underfloor heating systems must be properly commissioned before installation.
  • Application, working and curing times may vary with temperature, humidity, ventilation and substrate conditions.
  • Do not use material that has started to thicken or cure inside the container.
  • The completed membrane must be fully continuous and free from pinholes.
  • Always refer to the latest Mapei technical and safety data sheets before mixing or applying the product.

UK Mainland & Scottish Highlands only

We do not deliver to Islands, Ireland or Northern Ireland

How is shipping calculated?

Shipping is based on your order weight and delivery location. Add items to your cart and enter your postcode to see the exact cost before checkout.

Some products supplied directly from our manufacturers (non-stocked brands) carry a separate delivery charge — this is shown clearly at checkout.

Free delivery on orders £450+ inc VAT

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Next working day delivery

Order before 12:00 pm · From £6.50 + VAT · APC Overnight or DPD · Under 50 kg

Not available weekends or bank holidays

Next-day delivery is not guaranteed. Delays may occur due to carrier issues outside our control. The next-day delivery charge is non-refundable in the event of a carrier delay. Delivery times may be extended around bank holidays and public holidays.

No next-day to Scotland postcodes

AB · IV · KW · PA — please allow additional working days for these regions

Pallet delivery — orders over 50 kg

Semi, half or full pallet · Palletways or K & R Mason · Next working day

Kerbside delivery only — driver cannot bring goods onto the property

Supplier direct delivery (non-stocked products)

Some brands are shipped directly from the manufacturer and carry a separate delivery charge, shown at checkout.

Genesis (trims) — £19 + VAT · 1–3 days · cut-off 11:00 am

Marmox (mosaics, shower trays) — £15 + VAT · 1–3 days

Marmox (oversized backing boards) — £65 + VAT · 1–3 days

Schluter (trims) — £20 + VAT · 1–3 days

Bihui (trims) — £15 + VAT · 1–3 days

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Select Click & Collect at checkout to pick up your order from our Croydon warehouse. We'll send an email confirmation once it's ready — please wait for this before visiting.

Bring your order confirmation email or order number when collecting.

If someone is collecting on your behalf, they must have the order number and the name on the order.

Mon – Fri, 8:30 am – 4:30 pm. Closed weekends & bank holidays.

Tile Experience, 108 Beddington Lane, Croydon, London, CR0 4YY

Order tracking

Email or SMS sent by the carrier once your order is dispatched

Important: Do not book a tiler or fitter until your order has arrived and been fully checked. We cannot be held responsible for unforeseen delivery delays.

30-day return window

Returns accepted within 30 days of delivery. You also have a statutory 14-day cancellation right from the date of receipt.

Items must be unused & in original packaging

Returned goods must be uninstalled, unaltered and in the same condition as received.

Installed or cut items cannot be returned

Once tiles or materials have been cut, altered or installed, no return or refund is possible under any circumstances.

How to start a return

Contact us first at info@tileexperience.co.uk or call 0208 689 4187. Send the item back with your name and order number. Return shipping is the customer's responsibility.

Refund to original payment method

Processed within 3–5 working days of us receiving and approving your return.

Original delivery charges are not refunded. If no refund after 15 business days, contact us.

Damaged or incorrect items

Report within 48 hours of receipt. Email info@tileexperience.co.uk with your order number and photos of the damage. Confirmed replacements are sent next working day at no charge.

Non-stocked brands — restocking fee may apply

Returns for Genesis, Marmox and Bihui carry up to a 20% restocking fee. Schluter trims: 35% standard return, 15% if returning with a replacement order.

Cancellations

Cancel before dispatch for a full refund including delivery. Cancel after dispatch by rejecting the delivery — refund for goods only, not the delivery charge.

Important: Do not book a tiler or fitter until your order has arrived and been fully checked. Installed tiles cannot be returned.

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