4.9/5
Rated by 278 customers
Strong, solid and smooth
26th October 2025

Easy to mix, smooth to go on, and strong when cured

Johnbsproat
Great gloves
26th October 2025

Strong, don't rip, great when using fibreglass

Johnbsproat
Oxalic acid powder
26th October 2025

Does what it’s supposed to do

Guybroom
Great
16th October 2025

Excellent service and delivery. Great product. Does exactly what I wanted it to do. Thanks

Bev.day
Great service
16th October 2025

Always quick turn around when ordering , simple checkout and service is the best

Jaynerdfox.71
Oak fench project
13th October 2025

Firstly, a big thankyou to FSL for getting this to me quickly. My customer recently had around 70 mtr of Oak fence installed, unfortunately the builders decided to store the oak under polythene sheeting and much of the oak started to go black before even being installed. I used the oxalic acid (a fairly strong mix) to treat the fencing and manged to get the majority of it done in just one day. Without a doubt this has saved me days of sanding. I would highly recommend this product and FSL. Thanks again Andy A T Decorators

Andy
Nice cups.
10th October 2025

These look flexible enough to use and crack out excess cured resin. In my case I found they were going to be too big for the very small quantity I required so I have not yet used them.

Robert.delaney1948
Not sexy but it worked.
10th October 2025

It worked well enough. The only problem was that the printing of the mixing ratios was too small to read even with a powerful magnifying glass. It would be very useful to have a printed sheet of this supplied with each bottle.

Robert.delaney1948
Good product
10th October 2025

The filler was in a tin smaller than the website picture which had me worried at first. In the event I only needed to mix 20% of it to repair the damage to my caravan and I had almost enough left over to cover a patch on my conservatory roof. I shall finish the roof with the second mix. The product was easy to apply and had a long working time. It went off nicely. I would buy large syringes for measuring this filler in small quantities next time.

Robert.delaney1948
Good product arrived on time
08th October 2025

Good product arrived on time

Jason
Surf board repair
02nd October 2025

Great product, great price, delivered promptly.

Mdb95jd
All good
01st October 2025

Arrived promptly and exactly as advertised. Thankyou

Whlime
All good very quick service
30th September 2025

Job all done thanks for prompt service

Derekmaplesden
Good service
29th September 2025

I’ve yet to try the product itself but the ordering and delivery service was good

Tomevans.rock
Works great 👍🏻
28th September 2025

Worked great on my board / fin repairs , super clear once set . You do need a magnifying glass to see mixing ratios though.

Joandwes
Bangladeshi boat being restored
24th September 2025

Been restoring two bangadesi Nowkas over the past 5 years, the second one ,shown, is in very poor condition with wide gaps between planks and much rotten wood. The CSM has bridged the trouble spots and ensured good penetration of the epoxy. The cloth and tape will finish the job, next year!

Paddler69
Sika, always good products.
23rd September 2025

Great products, works as described. Sika are always reliable products.

Davetovee
Oxalic acid
23rd September 2025

Delivered very quickly works an absolute treat

Stuartellis75
Oxalic acid cleaner
22nd September 2025

As advertised. Works well. promptly delivered and well packaged. Thank you

Mark.tuson
Super service
21st September 2025

Very good and fast service

Nineleven
RAL8023 Pigment.
20th September 2025

Great pigment. Blends well, dries well and seals well. Couldn’t ask for anything else.

Gloora6
Great Service and Pricing
20th September 2025

Great seller

Jaynerdfox.71
Good Product
18th September 2025

Well designed Outlet

Rafeeqbaig
Marigold gloves
17th September 2025

As hoped!

Robson.e
Gel for kayak
17th September 2025

Built a kayak using ral 2009 brush gel coat. The finish was brilliant. Working time and cure time was good. In my personal opinion it could have done with more pigment in, but that may have effected it's properties

Markdpearman
All good.
16th September 2025

Good hassle free and prompt service. All good. Thanks guys.

Davidm44
Really good product
16th September 2025

Light and strong really good product easy to shape round unforgiving angles

Red-eyed-angel
Reviews