Watco Damp Proof Course
- Lightwork of heavy-duty repairs
- Structural strength solutions
Watco Damp Proof Course is a water-repellent injection cream for treating rising damp in suitable masonry walls. Applied into a prepared mortar course, it spreads by capillary action to create a new damp-resistant barrier within the wall.
The cartridge is supplied with a long delivery nozzle and can be applied using a standard skeleton gun. It is intended for suitable single-skin and cavity wall construction, with drill depth and material consumption determined by the wall thickness. Unlike a surface coating, the cream is placed inside the masonry: accurate drilling and complete filling of the specified holes are central to the treatment.
- Concentrated silicone-based, water-repellent cream.
- Cartridge and nozzle for skeleton-gun application.
- For specified brick, blockwork and stone wall construction.
Surface Preparation
Expose the mortar course where necessary by removing relevant skirting, render or plaster. Measure wall thickness and set the drill depth to match the manufacturer's table. Establish that the construction is suitable for the system. Cavity walls require particular care, including confirming that the cavity is clear before treatment.
Technical Data
| Pack | 310ml cartridge with nozzle |
|---|---|
| Composition | Single pack, water based water-repellent cream |
| Use | Interior or exterior masonry treatment |
| Drill diameter / centres | 12mm / no more than 120mm apart |
| Shelf life | 12 months unopened |
| Storage | Cool, dry and frost free |
Coverage
Approximate linear coverage per cartridge depends on wall thickness: 3.4m for 110mm walls, 1.7m for 220mm, 1.0m for 330mm and 0.7m for 440mm. Allow an extra 10% when estimating. These are wall-length figures, so an area-based paint coverage calculator is not appropriate.
Directions for Use
- Drill horizontally into the selected mortar course at no more than 120mm centres. Use the specified depths: 100mm for 110mm walls, 190mm for 220mm, 310mm for 330mm and 430mm for 440mm.
- Prepare the cartridge and fit the nozzle according to the instructions.
- Insert the tube to the full depth and backfill each hole to within about 10mm of the surface.
- Plug or finish the holes once the work is complete as directed. Follow the separate cavity-wall instructions rather than assuming a solid-wall detail applies.
Limitations
Confirm the source of damp and wall construction before specifying treatment. Injection cream for rising damp does not replace repairs to penetrating rain, leaking services or defective drainage. Different or unusual wall construction needs manufacturer advice. Avoid overfilling, which may leave temporary white surface marks. Read the GB safety sheet and use the specified protective equipment.
Product FAQs
What type of damp does it treat?
Rising damp in suitable masonry wall construction, using a correctly placed injection course.
What equipment is needed?
The product uses a standard skeleton gun and supplied nozzle, plus suitable drilling equipment for the specified holes.
Does one cartridge cover the same length in every wall?
No. Coverage reduces as wall thickness increases. Use the manufacturer's thickness table and allow an extra 10%.
Can it be used in cavity walls?
Yes, following the specific cavity-wall instructions and confirming the cavity is clear. Obtain advice for unusual construction.
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 eligible orders of £150 ex VAT or more within UK mainland.
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For eligible orders below £150 ex VAT, standard delivery is £8.75 + VAT. Products with their own delivery rates are excluded; the applicable charge is shown 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.
