Watco Liquid Waterproofer
Litres required: 0.00L
Based on 0.5 m² per litre- Lightwork of heavy-duty repairs
- Structural strength solutions
Watco Liquid Waterproofer is a cement and resin waterproofing coating for suitable concrete, brick and masonry. It forms a tough, flexible layer that resists water while remaining permeable to water vapour, making it useful for damp-prone basements, workshops and storerooms.
The Off White system is supplied as powder and liquid to be mixed before use. Its consistency can be adjusted using the supplied liquid for floors or suitable vertical applications, and the finished texture depends on the application method. The manufacturer also lists uses including balconies, walkways and certain tanks, subject to the full project specification. Correct preparation and total coating thickness are essential where water pressure is involved.
- Cement and resin waterproofing system.
- Suitable for prepared interior and exterior masonry.
- Flexible coating for damp-proofing and resurfacing applications.
Surface Preparation
Remove grease, dust, laitance and other contamination. Cut weak or spalled concrete back to sound material and repair with a suitable mortar. Surfaces must be dampened thoroughly before application, leaving them saturated but without standing water. Both the air and substrate must be at least 5°C.
Technical Data
| Pack size / colour | 25kg / Off White |
|---|---|
| Composition | Cement and resin blend, powder plus liquid |
| Finish | Matt; texture depends on application |
| Use | Interior and exterior |
| Minimum air and surface temperature | 5°C |
| Pot life / shelf life | About 1.5 hours at 20°C / 12 months unopened |
Coverage
Approximately 12.5m² per 25kg per coat at 1mm thickness (0.5m²/kg). The current product page recommends two coats. Increasing total thickness to meet a water-pressure specification increases material use: calculate from the required system thickness rather than the area alone.
Directions for Use
- Place the powder in a suitable bucket and add approximately three quarters of the supplied liquid. Mix with a slow-speed drill and paddle for about three minutes until smooth and lump-free.
- For floors, add the remaining liquid and mix thoroughly. For other applications, use only enough of the supplied liquid to reach the specified consistency.
- Apply to the damp, standing-water-free substrate with a suitable brush or roller. Keep each coat within the product page's 0.5–1.5mm application range.
- Apply subsequent coats once the first has cured, normally after twelve to twenty-four hours. Allow approximately sixteen hours at 20°C for light traffic and seven days before permanent water pressure.
Limitations
The required thickness depends on the application and water pressure. The linked technical sheet specifies 3mm total thickness for resistance to a 3m head of water; obtain a confirmed system specification for pressure-retaining work. Do not confuse initial drying with full water-pressure resistance. Remove food from the area during application and curing. Clean tools immediately with water, protect stored components from freezing and read both safety sheets.
Product FAQs
What is supplied in the pack?
A cement-based powder and liquid resin component, which are mixed together as directed before application.
Should the concrete be dry before coating?
No. Prepare and saturate the surface, then apply while damp but free of standing water.
How much area will one pack cover?
Approximately 12.5m² at 1mm thickness for one coat. Allow additional material for the full coat count and required total thickness.
When can it resist permanent water pressure?
The technical sheet specifies seven days for full chemical cure and permanent water-pressure resistance. Required thickness must also be achieved.
Data Sheets
We aim to deliver your products as quickly, safely and efficiently as possible. Below you'll find a full overview of our delivery process, options, pricing and terms. If you have any questions or a time-sensitive order, our team is always happy to help — just give us a call on 01902 712286.
📦 Standard Delivery
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Free delivery on all orders over £100 + VAT within UK mainland.
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For orders under £100 + VAT, a standard shipping fee will apply at checkout.
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Orders are typically delivered within 2–5 working days after receipt of cleared payment.
We use Parcelforce and FedEx as our main carriers, though this may vary based on location or size of your order.
⚠️ Important Notes on Delivery
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Orders placed after 12 midday (Monday–Friday) are usually dispatched the next working day.
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If you require urgent dispatch or Saturday delivery, please call us before placing your order.
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Do not schedule contractors or start work until goods have arrived and been checked — we cannot be held responsible for project delays due to late or damaged deliveries.
🚚 Next Day & Timed Delivery Options
We offer express shipping for orders needing a quicker turnaround:
| Service | Typical Cost* (Ex. VAT) |
|---|---|
| Next Day Delivery | £10.50 |
| Next Day AM Delivery | £15.00 |
| Specialist Items | £22–£25+ |
*Pricing depends on order contents and size. For mixed/tinted paint or specialist coatings, next-day delivery may cost more due to courier restrictions.
Please contact us if your order is time-sensitive — we’ll confirm what options are available based on your products and location.
📍 Delivery Outside UK Mainland
International Delivery
We are pleased to offer worldwide delivery on both parcel and pallet orders.
Parcel Shipments
All international parcel deliveries are handled by FedEx International. Shipping times and costs vary depending on destination, parcel size, and service availability.
Pallet Shipments (Including Dangerous Goods)
For palletised orders — including those containing dangerous goods - we work with independent specialist freight companies experienced in compliant global hazardous materials transport.
Due to the nature of these shipments, pricing and transit times are provided on a case‑by‑case basis.
Requesting an International Delivery Quote
If you would like to place an international order, simply get in touch and we will prepare a personalised shipping quote. Please provide the following details:
- Your full name
- Delivery address (including country and any required customs information)
- Details of the items you would like to order
- Quantities for each item
Once we have this information, we’ll handle the rest - from calculating the most suitable shipping method to arranging safe and compliant delivery to your destination.
🛠️ Specialist Products & Pallet Deliveries
Some coatings are made to order, particularly from premium brands like Sigma/PPG. These orders:
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May have longer lead times
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May carry a £150 + VAT delivery charge
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Could require pallet delivery — a separate charge may apply
If your order requires palletisation, we’ll contact you after checkout to confirm delivery costs. You're also welcome to contact us first for a delivery quote before placing the order.
📦 Stock & Availability
We hold a large amount of stock ready for immediate dispatch, but:
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Some products may need to be ordered in from manufacturers
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Specialist items may be tinted or made to order, causing additional lead time
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We’ll always aim to part-deliver where possible to avoid unnecessary delays
If you’re on a strict deadline, please get in touch before ordering so we can advise on delivery timeframes.
🚫 Delivery Liability
While we work hard to ensure your order arrives safely and on time, we use third-party carriers and cannot be held liable for:
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Delays in transit
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Lost shipments
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Goods damaged in delivery
If your order is damaged or delayed, please let us know as soon as possible. We are not always informed automatically by the courier, so your input is essential.
We will work with you to resolve any issues — whether that means replacing items or chasing the carrier.
Note: Address changes after dispatch may incur additional charges, so please double-check your delivery details at checkout.
🧾 Payments & Order Processing
Orders are only processed once full cleared payment has been received.
You will receive email updates at each stage of the process:
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Pending – order received
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Processing – being picked, packed or manufactured
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Dispatched – on the way with the carrier
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Back order / Part dispatched – if stock is split or delayed
Need Help?
If you're unsure about shipping costs, timelines, or need your order by a specific date, we strongly recommend giving us a quick call before placing your order:
📞 01902 712286
📧 info@andrewscoatings.co.uk
We're here to help make sure you get the right product, in the right place, at the right time.
