Weathershield Smooth Masonry Paint is a high-quality decorative coating for exterior walls. It is formulated for professional use; being easy to apply and has excellent opacity.
For exterior jobs where you want dependable protection with a softer, contemporary edge, the Dulux Weathershield Cobblelock 10L delivers proven trade performance with a modern neutral finish. Cobblelock is a versatile mid-grey tone that works just as well on new builds as it does on renovation projects, giving a clean, balanced look that complements stone, brick and contrasting trims.
Formulated for exterior masonry, this high-performance, water-based paint is built to handle tough Irish weather conditions. Its advanced acrylic resin technology offers excellent flexibility to help resist cracking and flaking, while built-in mould and algae resistance keeps exterior walls looking fresher for longer.
With strong hiding power and a smooth masonry finish, Cobblelock provides reliable coverage across large surface areas — ideal for full house exteriors or boundary walls. Easy to apply by brush, roller or spray, it’s a straightforward option for both professional tradespeople and capable DIYers who want a job done right.
Key Features:
All-Weather Protection: Durable, flexible finish designed for year-round Irish conditions.
Mould & Algae Resistance: Helps prevent organic growth within the paint film.
Contemporary Grey Finish: Cobblelock offers a clean, modern exterior look.
Excellent Coverage: High opacity for efficient coverage on textured masonry.
Trade & DIY Friendly: Suitable for brush, roller or spray application.
Technical Specification
Product Code: 5123714
Size: 10 Litres
Coverage: Up to approx. 16 m² per litre (surface dependent)
Dry Time: Touch dry in approx. 30 minutes; recoat in 2–4 hours (weather dependent)
Application: Exterior masonry — brick, render, pebble dash and concrete
TJ’s Tip:
Don’t skip the prep. Remove loose material, treat any mould or algae, and make sure the surface is clean and fully dry before painting. Two even coats will give you better durability, richer colour and longer-lasting protection — especially on new render or previously unpainted surfaces.
* Effective from 3 December 2025 * Free delivery on order over €400, applies to Small & Light, Large & Heavy items within zone 1 only.
Zone Indicator:
To help you understand delivery availability, every item displays a zone icon, icons appear on the top-right corner of each product image:
Types of goods
Available zones
Descriptions
Small & light items
All Zone area
Items under 20kg weight & under 2m long, (some fragile items may not be included e.g. glass/mirrors)
Large and bulky items Extra Large items
Zone 1 & 2 only
Wet & hazardous bagged, items over 20Kg weight & oversized; Euronics white goods, TVs of all sizes.
Large Paint items (6L / 6L+)
Zone 1 only
Large hazardous items (6L+) - available for collection
Available zones
Indicator
Descriptions
All zone area
This icon with all zone area in green, indicates this items can be shipped to all Zone.
Zone 1 & 2 only
Zone 1 & 2 in green and zone 3 greyed out, indicates this product can only be shipped to Zone 1 and 2
Zone 1 only
Zone 1 in green zone 2 and zone 3 are greyed out, indicates this product can only be shipped to Zone 1 only.
Old Appliance Collection:
When you buy a large appliance, we’ll collect your old one for free through WEEE Ireland. Please ensure it is uninstalled, disconnected, and ready for pickup. Collection is like-for-like and takes place at the front door or apartment entrance. Restrictions may apply based on access and item type.
At TJ O'Mahony we will exchange or refund any Retail unused product returned to us in its original condition within 30 days of receiving it (*)You can return any unused product to us in its original condition for a full refund or exchange within 30 days of delivery.
This right to return does not apply to products that are non stock and only available to order such as catalogued doors, catalogued bathroomware and mixed paints which are made especially for your order.
Please note that we are unable to accept returns on certain bagged building products and materials, including (but not limited to) hard wall, cement, bonding, slates, and ridges. We appreciate your understanding and recommend checking product requirements carefully before purchase.