Armstead Trade Stabilising Primer - 5 Litre

Prepare weathered exterior masonry for a long-lasting finish with Armstead Trade Stabilising Primer. This professional-quality, clear, solvent-based primer is specially formulated to seal porous, dry and powdery masonry surfaces, providing the ideal base for exterior masonry paints.

Designed to penetrate and stabilise chalky or friable surfaces, it improves adhesion while helping to resist alkali attack, ensuring your chosen masonry paint performs at its best. Ideal for use before applying Armstead Trade Masonry finishes, this primer helps create a durable, professional-quality finish on exterior walls.

With coverage of up to 10m² per litre, Armstead Trade Stabilising Primer is easy to apply by brush or roller and dries quickly, making it an essential first step when repainting weathered masonry.

• Professional-quality clear stabilising primer
• Seals porous, dry and powdery masonry surfaces
• Improves adhesion of exterior masonry paints
• Helps resist alkali attack
• Suitable for exterior masonry
• Ideal for use with Armstead Trade Masonry finishes
• Clear finish
• Available in 5L

For the best results, ensure all surfaces are clean, dry, sound and free from loose material before application.

• Thoroughly scrape and brush the surface to remove all loose, flaking paint, dirt and dust.
• Use a stiff fibre brush rather than a wire brush to avoid leaving metal fragments that may rust and stain the finished surface.
• Treat any mould, algae or organic growth with a suitable fungicidal wash before painting.
• Repair minor imperfections before decorating and fill larger cracks or holes with a suitable sand and cement mix.
• Do not apply stabilising primer to sound, new or bare masonry, as it is intended only for porous or powdery surfaces.

Important: Paint applied before the 1990s may contain lead. Take appropriate safety precautions when preparing older painted surfaces.

• Stir or shake the container thoroughly before use.
• Apply by brush or roller. Spray application is not recommended for solvent-based products.
• Apply one coat to prepared powdery masonry surfaces.
• Once fully dry, overcoat with a suitable Armstead Trade exterior masonry paint.
• Allow 2-4 hours for the primer to become touch dry.
• Leave 16-24 hours before applying the finishing coat.
• Do not apply in temperatures below 5°C.
• Coverage is approximately 10m² per litre, depending on surface porosity and texture.

Store in a cool, dry place, protected from frost and extreme temperatures.

• Clean brushes and rollers immediately after use with a suitable brush cleaner.
• Do not pour leftover paint or solvents down the drain.
• Allow paint solids to settle and reuse cleaner where possible.
• Dispose of waste responsibly via a hazardous waste facility or according to local regulations.

Q: What surfaces can I use Armstead Trade Stabilising Primer on?

A: It is designed for powdery, porous exterior masonry surfaces. It seals these surfaces to provide a stable base for most decorative finishes. Do not use on sound new or bare surfaces. Extra precautions are needed for pre-1990s paint on wood or metal due to potential lead content.

Delivery - All orders placed on a working day before 3pm will be dispatched on the same day for next working day delivery. Orders placed before 3pm on Friday will be delivered on Monday (excluding bank holidays). Orders placed after 3pm on Friday, weekends and Bank Holidays will be dispatched on the next working day. 

Delivery of Tinted Products - Tinted paints are dispatched in line with our express order process, shown below. However, due to their bespoke nature, please allow up to an additional 5 working days to accommodate any potential courier delays or delivery issues before receiving a refund or replacement.

We strongly suggest customers avoid booking tradespeople until they receive their order. Next Day Paint will not be held liable for any costs incurred due to order processing errors, delivery delays, or other issues that may result in financial loss.

Delivery Options

Express Shipping - £3.99

Order by: 3pm, Monday - Sunday

Expected delivery: Next working day, 8am - 9pm

AM Delivery - £12.99

Order by: 4pm, Monday - Sunday

Expected delivery: Next working day by 4pm

Late Cut-Off - £5.99

Order between: 3-4pm, Monday - Friday 

Expected delivery: Next working day, 8am - 9pm

Extended Late Cut-Off - £7.99

Order between: 4-5pm, Monday - Thursday

Expected delivery: Next working day, 8am - 9pm

Saturday Delivery - £9.95

Order by: 4pm, Friday 

Expected delivery: Saturday, 8am - 9pm

Standard Delivery (Out of Zone Postcodes Only) - £8.99

Order by: 3pm, Monday - Sunday 

Expected delivery:  3-5  working days, 8am - 9pm

Note: Orders placed on weekends or bank holidays will be dispatched on the next working day for delivery on the following day

We do not deliver to the Channel Islands or the Republic of Ireland

Certain postcodes delivery times and charges may vary please head to the cart to see your available delivery options.

Returns

We offer a 14 day money back guarantee for all goods shipped correctly that are not required. If the item is not required, please send the item back for a full refund in its original condition, unused with its original packaging. Please note return for unwanted item is at your own expense.

Contact us as soon as possible to inform us you will be returning the product either by a contact form or by calling our team on 0161 960 0217.

All tinted paint purchases are final and non-refundable. If you're unsure about your selection, please refer to the product listing or contact us for guidance before ordering. Once mixed, tinted paints cannot be returned or refunded, regardless of delivery delays or changes in circumstances.

While we aim to meet delivery timelines, we are not responsible for delays caused by couriers, weather, or other external factors.

We recommend ordering samples or colour charts before purchasing. While we strive to represent colours accurately, screen settings and surface types can affect appearance. Opened tins cannot be returned due to dissatisfaction with colour.

For non-tinted products, we offer a 14-day money-back guarantee. Items must be returned unused, in original condition and packaging, at your own expense.

Damaged Paint

Please visit our damages page, where we can help resolve the issue for you. 

Incorrect Item

If we have sent you a different item from what you ordered, we will be happy to organise an exchange for the correct goods at no extra charge to yourself, please get in touch to organise this.

Faulty Items

Faulty items can be refunded or exchanged within 30 days. All returns are tested, and if no fault is found, no refund will be issued you'll have the option to have the item returned. For faults discovered after 30 days, please contact the manufacturer for further support.