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Underwater Primer 2.5L

BELOW WATERLINE

SHIELD Underwater Primer is a specially formulated primer for use below the waterline under CU-PRO Premium Antifouling.

It can also be used to seal over existing antifouling or direct to GRP, aluminum, steel, wood or ferro cement.

SHIELD Underwater Primer was previously known as CU-Pro Primer.

Grey in colour.

 

Specification 

Guides 

Suitability 

Product features

  • Great value!
  • GRP, wood, steel, ferro cement, & aluminium
  • Tiecoat over unknown or hard antifoulings
From £28.55

 
 
 
 
 
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CU-PRO Antifouling 5L

CU-PRO Antifouling 5L

Premium self-polishing antifouling with a commercial grade biocide to give service interval of up to three years.

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CU-PRO Thinners 1L

CU-PRO Thinners 1L

CU-PRO Thinner is formulated for use with CU-PRO Premium Antifouling and with SHIELD Underwater Primer.

From £11.80

FOR
FRAME

SML Blue Stripe Roller

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Thermobonded and solvent resistant for reduced fibre shedding. Available in various lengths and pack sizes. Ideal uses - Antifouling, single & 2 pack Primers.

From £2.40

Roller Frames/ Cages

Roller Frames/ Cages

A selection of roller frames and cages in varying sizes and lengths.

From £1.30

DETAIL
WORK

Handled Paint Cup

Handled Paint Cup

Handled / shaped paint cup for comfort and ease of use: Paint grid with raised edge aids loading of paint and removal of excess. Recessed corners for pouring. Shaped side allows mini-roller to be rested in cup.

From £4.70

Low Tack Tape - 50m

Low Tack Tape - 50m

High Tech masking tape developed to give excellent barrier properties, eliminating paint bleed to ensure the ultimate in sharp paint lines and guaranteeing a professional finish every time. Suitable for use on delicate surfaces - always try a small area first. Available in 1", 1.5" and 2" widths.

From £4.30

 

What our customers say

Couldn't be more helpful and professional. The best paint company I've ever used. - Glosstock Sales
We are very impressed with the CU-PRO anti fouling. Just dried out the yacht after 14 months continuous immersion and the anti fouling had repelled growth very well, delighted with the anti fouling’s performance and will be re-coating with CU-PRO before re launch in spring next year. - Ian Binnie - Argyll
I just want to say how impressed I have been with the quality and level of service I have received after placing a recent order with you. Great communication, delivery, documentation, and the packaging was something else, everything was absolutely spot on. - Dennis Allen - Cheshire
Three years ago you supplied CU-PRO Antifouling (3 year coverage), well the yacht was lifted out this week after nearly 3 years in. WOW could not believe how good the bottom was after a quick power wash - one happy happy customer with the super antifouling quality. - Mr McLeman - Dumfries & Galloway
Thank you for the exemplary service, the paint tins were so well packed, and the surprise Document Pack, was very helpful. That, combined with very swift delivery, was most impressive - D G & B L Lewis - Cardiff
Quite bluntly, best customer service I've ever received. Expert advice on surface prep and paint technical details and happy to work with me through a difficult problem. - James Moulding - London
I was delighted with your service and am in the process of placing another order i paint boats for a living haven’t had the pleasure of using your product but found it easy to use. - Brian Wholey - Lancashire
Just blacked our boat - your products were fabulous! Been telling all in our Marina! All the kit was spot on, including the rollers. - Sharon Jones - Shropshire
Recently used SML to order paint for my dutch barge. All the staff were very helpful and knowledgeable about products. They even managed to get a package sent out to me next day when I had come up short on thinners at the end of a long day spraying. I will definitely order paints from here in future. - Christopher French
Great marine paints. - James Crompton
Exceptional customer service from start to end. Very knowledgeable staff who go above and beyond to ensure they're selling the correct product to the customer. Combined with good prices, SML is now my go-to company for quality paint and excellent service. - Beam Trading
Just a quick note to say how pleased I am with your products. I have just completed painting my boat and I am thrilled with the result. Excellent product and service – cheers - Adrian Mickleson - East Molesey
Hello guys, the customer service I received when I was calling for advice really was excellent, I'll be recommending you to all my fellow boaters - Richard Sergejev - Hertfordshire
Thank you very much for a superb product. I used Cupro for the second year at June 2019. On 15th May 2020 - after lock-down, I returned to the boat to find a heavy curtain of weed growing in a "slime" of mud on the hull. I brushed off the mud - the weed went with it, and you could believe the boat had been freshly anti-fouled that day. Excellent - a superb product. - Rod Edmunds - Hayling Island
Your website is imho, one of the best in the business. Great products, advice and all the ancillaries needed to get a first rate result, delivered swiftly at a very fair price indeed. Tops! - Tim Allen - East Sussex
Excellent Company. Very good knowledge of products and can't do enough for you. I have used this company for around 10 years. - Joseph Wiggins
I would like to thank you for the excellent service from yourself and your fellow workers, keeping me up to date with progress of my order was so welcome in these trying times, I afraid not many firms go the extra mile as yourselves. Brilliant products that I can recommend to any of my friends. Thanks again. - Mick Southby - Bedford
Ordered and delivered within 2 working days. Outstanding service and communication. My order from another company who makes for the trade still not here after a month! - David Black - Denny, Scotland
Many thanks for a wonderful service which would be hard to equal, I have never felt more confident in using your company - Thank you - John Parkin - Mexborough
Helpful, professional and know their products. - John Richards
Thanks very much for all your help and information in relation to our boat anti fouling. It was almost four years since it last came out, but I’m pleased to report, CU-PRO kept the boat in good order. I have used it again this year and I am fully confident, it will again protect my boat for another couple of years. - Mr Duffy - Berkshire
These guys are exceptional when it comes to customer service. Every time I have spoken to them on the phone they have always gone the extra mile to ensure that I got the help that I needed. They are always more than happy to spend time explaining things to me. I am always left wishing that more companies would be run with the same amount of care as SML Marine Paints. Really appreciate your help guys. Many thanks. - Georgia Stanley-Smith - Google Review
If you require anti fouling paints - Go no where else! I have used all the leading antifoul manufacturers paints over 30 years. CU-PRO is the best on the market, does the best job and even cheaper than most of the others. SML are a quality company and with the best products. - David Rosser
My boat went back in the water today! I would like to thank SML for the great service you provided, both over the phone, super quick delivery, but above all an excellent product. The boat looks great - Steve Duffy - Staines
CU-PRO antifouling is the best we ever used, mine has been on 2-years. Boat comes out occasionally for a blast and put back and antifouling is still perfect. Lost count of how many people I have recommended this product to. - K Jarvis - Fishing Boats Echo 5
Thank you for the excellent service and advice I have received From yourselves. I have placed 3 orders recently and have received every one exactly when I was supposed to. Each item has been brilliantly packed - I will certainly be recommending you to all the other boat owners I know. - Paul Andrews - West Sussex
Thanks, paint just delivered this morning. Excellent service from you and the company. Keep up the good work! - Robert Higgins - Edinburgh
I used your SHIELD Surface Tolerant Primer and am hugely impressed with the results - this is by far the best result I've had out of many different paints I've tried for this task! The performance is all the more remarkable since the keels sink into highly abrasive harbour mud every low tide, which scours most coatings off. - Mark Hartswood - Scottish Borders
Excellent customer service and competitively-priced products. Their product knowledge is solid and if you have any questions about the application process etc. they are quick to respond with input/advice. Recommended - Matthew Traver - Kent
Thank you so much for clear and excellent advise. It is so rare to receive such excellent customer service. - Mr Donaghy
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