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Ronseal Diamond Hard Garage Floor Paint Slate 5L

3.8 (138 reviews)
SKU: 240303164110003 EAN: 5010214857630

Compare 2 prices for Ronseal Diamond Hard Garage Floor Paint Slate 5L — from £51.95 across 2 UK sellers including Tooled Up, My Tool Shed.

£51.95 41h ago
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Compare Prices from 2 Sellers

Prices updated 19 Apr 2026
2
My Tool Shed
£51.95 +£0.00
11h
#2 My Tool Shed
11h ago
£51.95 +£0.00
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Keep your garage floor protected and looking fantastic with Ronseal Diamond Hard – it leaves a smooth finish that’s tough enough to park a car on, without worrying about scuffs or scratches.\nRonseal Diamond Hard Garage Floor paint can withstand oil, grease and petrol spills, and is suitable for use on stone or concrete floors. It can be applied to bare or previously-painted surfaces, and 2-3 coats is usually enough to get the job done – the slate-coloured paint is touch-dry in four hours, and fully dry in 72 hours.\n\n• Coverage of up to 12m² per litre\n• Touch-dry in just 4 hours\n• Completely dry in 72 hours\n• Normal finishing process of 2-3 coats\n• Suitable for interior stone or concrete floors\n• Resistant to scuffs and scratches\n• Stops oil, grease or petrol spills from staining\n• Can be used on bare or previously-painted floors\n• Not suitable for self-levelling compound or power-floated floors\n• Supplied in a 5L tin – total coverage of up to 60m²
Application Method Paint
Base Material Acrylic
Brand Ronseal
Colour Blue
Container Size 5 L
Coverage 12 m²
Drying Time 120 min
Finish Satin
MPN RSLDHGFPSL5L
Packaging Can
Paint & Primer In One No
Room Garage
Suitable For Flooring, Concrete
Type Garage Floor Paint
No features listed
No items listed

Customer Reviews 138

3.8
138 reviews
5 star
82
4 star
13
3 star
6
2 star
7
1 star
30
Easy to apply with good coverage
5.0
February 24, 2026
AndrewGR Verified Purchase

Easy to apply with remarkably good coverage. I used this to repaint a much damaged garage floor. The floor had been painted previously but was deeply gouged and scratched. After filling the holes and rubbing down to provide a good key, I expected to need several coats just to cover the filler. The instructions imply that a minimum of two coats would be required. However, a single coat provided good cover. I then did two more coats to build up a good layer of paint.

Other's reviews have suggested the product is 'watery'. This might be because it has not been adequately stirred. I found that the pigment had settled to a thick layer at the bottom of the tin and I probably stirred for around 5 minutes with a whisk on my battery drill before the paint showed an even consistency with no streaks of dark coloured pigment appearing.
The tin suggests that 5 litres will provide 3 coats over 20 square meters.My garage is about 18 square meters and I used only half the tin for 3 coats. In part, this may be because the floor had previously been painted rather than being raw concrete.
Suggested drying time is 4-6 hours. Perhaps because it wasn't too warm and the air was humid, it took a lot longer than 6 hours for each coat to dry to a matt finish. I left it about 24 hours between coats.
Time will tell whether the finish really is 'Diamond Hard'. For the moment, I'm happy with the appearance.

Excellent coverage and tough finish
5.0
February 7, 2026
NickRH Verified Purchase

3 coats did the job on sealed concrete very nicely. Stood up to considerable traffic just a few days later

Not fit for purpose
1.0
December 8, 2025
TLR Matthew

I bought those garage floor paint thinking it was better than the Leyland alternative being almost £10 more expensive. I followed the instructions exactly sealing my new concrete first then applying 3 coats. Absolutely great finish applying it a with roller. Problem came when it first rained, my wet footprints going in and out of the garage quickly turned the paint into wet paint again and was now paddling wet paint footprints out of the garage. When attempting to mop the wet areas it just fetches the paint up. Absolute joke not fit for purpose would have expected better for this brand and almost £56 a tin!

Ronseal garage floor paint
5.0
November 19, 2025
JeffGar Verified Purchase

Very pleased. Did what it said on the tin.. I was a bit worried as temp was around 10 deg but dried quickly and so far looks great. Was easy to apply also

Paint comes off quite easily
3.0
November 18, 2025
Cromanx7cro Verified Purchase

Car tyres pulled up the paint quite easily and scratches

Floor painting made easy
5.0
October 4, 2025
Billybones Verified Purchase

Excellent product and easily did the job on a garage floor

Applied but yet to be tested
4.0
September 30, 2025
Pierre 25 Verified Purchase

I have applied 3 coats but as yet I cannot comment on how durable the paint is. Once it has been used a few times with wet vehicle tyres travelling over it I will be able to judge its wear and tear better. In the past I have used garage floor paint which has peeled offone wet vehicle tyres have been over it .... hopefully this will not be the case with the "Diamond hard" paint.

Old floor new paint. Looking good
5.0
September 22, 2025
BBB65 Verified Purchase

Excellent.used today had 2 coats applied with a fencing brush. Spreads easy covers⁸ great. It's an old garage.so floor wasn't great but looks ten times better already..

Great product.
5.0
September 17, 2025
John271 Verified Purchase

Great product and Toolstation were veer helpful in ordering it on for next day collection.

POOR SERVICE
1.0
May 16, 2025
GERALD TOOTHILL Verified Purchase

my reveiw is i was told to pick it up it was not there from monday to friday still no TXT

Revive garage floor
5.0
April 8, 2025
Philip watts Verified Purchase

Worked really cover well with one coat, but adding another two to be safe

Good quality
5.0
April 7, 2025
Dan1236 Verified Purchase

Covered well, brush painted straight onto concrete floor

Hard-wearing paint
5.0
March 6, 2025
Arniebirdboy Verified Purchase

Good hard-wearing paint...think I made a big mistake applying with a brush and ended up with streaks..redone with a roller...much much quicker and really good results

Follow the instructions!
5.0
January 31, 2025
Mi L Verified Purchase

My newly built garage and concrete base were allowed to dry out for a few weeks, before sweeping all the dust up and sealing it with a good quality concrete PVA floor sealant that I simply applied with a wide yard type brush. I followed the instructions provided on the tin and found the garage floor paint to have excellent coverage and applied two coats, which resulted in an excellent and hard finish. After quite a few months of use, I can confidently say that I am very pleased with this product.

Paint
5.0
December 29, 2024
ejo994dj0sf3u8ttgyti8dgeb Verified Purchase

Does as expected . The floor is now painted and is a grey colour

value for money on this product
5.0
December 3, 2024
AJF Heating Verified Purchase

Used the paint for a boiler plinth, all good coverage

Good service
5.0
November 19, 2024
SVM Verified Purchase

Brilliant fast service with good products all at a local outlet

Good product
5.0
November 13, 2024
Gazi Verified Purchase

Used this recently, goes down well and good coverage, water based so drying time is pretty good even in cold conditions, did the recommended three coats and seems to have covered well , time will tell how long it stays down for .

Best applied in summer and let dry for 3+ days
5.0
November 11, 2024
Td5_Pete Verified Purchase

Good product, but surface preparation is key. Best applied to a clean, dry, new floor in summer temperatures. Have used this product multiple times, most recent to a very old damp concrete floor in November ! - it did take multiple days to dry off completely, but I'm happy with the result overall given the challenging conditions ( oil stains and dampness etc. ).

Does what it says on the tin.
5.0
November 3, 2024
Lincoln mike Verified Purchase

Excellent coverage goes on effortlessly with a roller will definitely use again.

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