Bostik Concentrated Mortar & Brick Cleaner 5L

By Bostik Product code: 98902 Pack size: Each

Please note: We are unable to sell or deliver this item to anyone under the age of 18. An age verification process provided by our third party partners ‘Verify My Age’ is in place to check all orders. Physical proof of age may also be required at point of delivery.

Delivery Address
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Collection Address
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Product Details

Hydrochloric acid-based cleaner for trade use only. Removes heavy cement and mortar stains from brick, concrete, paving, scaffolding and tools. For exterior use.

Hydrochloric acid based cleaner for exterior use. Removes stubborn stains, limescale, ingrained dirt, heavy cement and mortar stains from brick, concrete, paving and patios, scaffolding and tools.
Apply by brush. Use protective goggles, gloves and clothing to cover face, eyes and skin. For exterior use only.
Dilute as stated and test on a small concealed area before proceeding to clean the whole area.

Technical Specification
Brand Bostik
Unavailable offshore
Age restricted (18)
Manufacturer ID 30812503
Safety Data Sheet click here
Volume (L) 5
Delivery details

Covid-19 Update

  • FREE Next Business Day delivery is available for orders over £25 for orders placed before 9pm Mon-Thur and before 6pm Sunday
  • Saturday and Sunday delivery is available for orders placed before 6pm on Friday for Saturday Delivery and 4pm Saturday for Sunday delivery. Items over 30kg can only be delivered next Business Day Mon-Fri. Orders placed after 9pm Thursday will be delivered the following Monday see here for details
  • Pre-12 delivery service is now available for weekday deliveries. Place your order before 9pm Mon-Thur for next business day delivery by 12pm. Orders placed after 9pm Thur and before 6pm Sunday will be delivered by 12pm Monday. UK mainland only
  • Once your order has been dispatched you will receive an invoice email with the courier details and your tracking number
  • Alternatively go to MyAccount, click on your Order History, click on the TRACK icon to link through to the carrier website and the tracking details for your delivery
  • Delivery direct from suppliers is available and specific delivery times will be displayed on the product page
Order Value: Under £25 Over £25 but less than £75 £75 & Over
Next Business Day Mon-Fri (order by 9pm Mon-Thur & Sun by 6pm) delivered before 6pm £5 Free Free
Pre-12 Delivery Mon-Fri (order by 9pm Mon-Thur & Sun by 6pm) delivered before 12pm next day £10 £5 £5
Remote areas standard delivery (2-4 days) £5 Free Free
Saturday Delivery (order by 6pm Friday) delivered before 6pm £10 £5 Free
Sunday Delivery (order by 4pm Saturday) delivered before 6pm £10 £5 Free

Please note items delivered by our suppliers are not available for the options above. Delivery times may vary.

More about Delivery & Returns
Click & Collect details

Covid 19 Update

Click & Collect

We are fully open and delighted to welcome our customers into our branches.

Our opening times are 7am-8pm Monday-Friday, 7am-7pm Saturday and 9-4pm Sunday

Our speedy 5 min Click and Collect service remains one of the safest ways to buy from us and minimises your time in store. Place your order at 7 days a week, and travel to store once your collection confirmation is received by email or text message.

Don’t forget your mobile number – Please ensure that your mobile number is added so that we can text you when your order is ready to collect.

Your items will be held at your selected Toolstation branch for 14 days, after which point your order will be put back to stock and refunded automatically.

Bostik Concentrated Mortar & Brick Cleaner 5L is rated 4.6 out of 5 by 151.
Rated 1 out of 5 by from Leaves horrible white stains Very disappointed with the product. Needed to clean my bricks after doing pointing, the mortar stains were superficial but didn't look nice so I thought that this product will bring the back to their best but actually it made it worse, now I'm left with lots of white stains all over the bricks. I have used this acid diluted with 4 parts water and even so it's horrible. Don't recommend this product at all.
Date published: 2021-05-11
Rated 5 out of 5 by from Mortar and Brick cleaner Great product which did more than I expected with heavy stains lifted, brickwork came up as new. Powerful cleaner so use safety gear to cover skin and eyes.
Date published: 2021-05-10
Rated 5 out of 5 by from Does the job, as intended, Cleaned loads of mortar and stains from bricks andstamped drive. Overall pleased.
Date published: 2021-05-09
Rated 4 out of 5 by from Removed over spray on block paving Had a little overspray on some block paving to remove, couple of rinse downs and a scrub with the brush and it disappeared. Only problem was my local shop didn’t have stock so had to drive 15 mile round trip just for this.
Date published: 2021-05-09
Rated 5 out of 5 by from Unusual use as toilet cleaner Limestone in Toilet, we live in an area with very hard water, and one of the toilets built up a thick coat of limes Cale - despite using domestic removers regularly. Nothing would shift it , but this stuff did trick and now clean shiny lime free porcelain
Date published: 2021-05-08
Rated 2 out of 5 by from Dissolving expectations Bought this to remove some cement off a clients brickwork. To be honest I was disappointed as it didn't really remove any mortar from the brickwork but did start to dissolve some of the bricks. However I have found that is great for cleaning mould and frost spots off concrete slabs. In this case it dissolves the right thing.
Date published: 2021-05-06
Rated 4 out of 5 by from Cleaning up s driveway . Just follow the instructions and works well on concrete driveway thst had render splashes and some water based masonry that my customer had spilt.
Date published: 2021-05-06
Rated 5 out of 5 by from Bostik Concentrated Mortar & Brick Cleaner 5L The Mortar & Brick Cleaner 5L I used gloves, glasses and long jumper to cover due to the acid will burn. I used this to clean mortar and concrete of bricks on the house were previous people built the ground to high same level as damp prof course level. So I reduced this to 2 or 3 bricks below creating a channel. I then had the task of cleaning all the bricks to try remove the concrete and mortar. I painting on several coats 1 a day for 4 days over a 2 week periods giving times to dry out fully to see the results due to heavy marking. The 4th time it removed almost all the concrete and mortar which had been there years. The thicker bits I used screw driver lightly to loosen those to help the cleaner work better. The key once the clean in the bowl gets dirty don't allow this to be painted on the bricks it will leave dusty looking. I found this out so when I see the cleaner getting to dirty I would use it up before and put fresh new stuff in and it cleaned the dusty look away. The brush once dirty I used anther this also made dusty looking. So I used throw away brushes cheap ones to stop that problem. I found it best worked when dry weather but not to hot direct sun due to drying out to fast. So if you get cooler dryer days that's best time to use it.
Date published: 2021-05-04
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