Mapei Mapeflex Firestop 1200°C High Temperature Grout Grey 300ml

Product Code: 25153
Mapei Mapeflex Firestop 1200°C High Temperature Grout Grey 300ml
Product Code: 25153
For rigid seals in voids and joints between materials that come into direct contact with flames or need to withstand temperatures up to 1200°C. Suitable for industrial furnaces, wood burning ovens, barbeques, chimney flues and fireplaces.


  • Odourless
  • Solvent-Free
  • Accommodates Movement of
  • Rapid Drying
  • Suitable for Materials in Direct Contact with Flames
  • Ideal for Pre-Manufactured Elements


Covers 3m per 300ml.
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Safety Data Sheet
€13.45 Incl. 20% VAT
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Additional Information
Technical Specification
  • Brand : Mapei
  • Sealant Adhesive Volume : 300 ml
  • Product Type : 1200°C High Temperature Grout
  • Model Name : Mapeflex Firestop
  • Colour : Grey
  • Pack Size : 1
  • Manufacturer Guarantee : 5 Year Manufacturer's Guarantee (T&Cs Apply)
  • Pieces in Pack/Case : 1
Product Contents
Delivery & Returns


Standard delivery: €15

Free delivery on all orders over €70.00

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Hopefully you won't need to return an item, however, if you do, it is our aim to make this as simple as possible. By following the guidance below you can help us to help you when a product is not what you expected, or is faulty. Your statutory rights are not affected by this guidance.


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Mapei Mapeflex Firestop 1200°C High Temperature Grout Grey 300ml is rated 3.8 out of 5 by 20.
Rated 5 out of 5 by from Brilliant Stuff Both of the firebricks in my woodburner had broken in half. Went to Screwfix and bought a cartridge of this stuff.Removed bricks and applied a good bead to each edge then squeezed bricks together and replaced them. Scraped off excess with knife. It states curing time of 24hrs, i was cold so lit fire after 6hrs without any issues, no movement no cracks, nothing.4 days have no passed and still good.
Date published: 2017-01-13
Rated 4 out of 5 by from Great high temp' sealant Had 300 c' sealant before, this stuff is great, resists very high temps'.
Date published: 2016-11-24
Rated 3 out of 5 by from Ok sealant Used sealant around flue pipe of log burner. Product reasonably easy to use, however I have given it three stars as it seems to deteriorate after 1-2 months of regular use of burner and flakes away. Haven't found a product that lasts any longer
Date published: 2016-11-09
Rated 4 out of 5 by from excellent sealant Did exactly what it was designed to do. The application of the product was easy.
Date published: 2016-11-08
Rated 5 out of 5 by from fire stop sealant Does what it says on the tube, easy to use and happy with my purchase
Date published: 2016-11-03
Rated 2 out of 5 by from Not too good Used this to seal drums up in the loft. It came out very lumpy (almost like it had gone off) It didn't cover anywhere near as I thought it would because of this. Yet to see how good the product is hence 2 stars.
Date published: 2016-09-09
Rated 3 out of 5 by from Problem with Application... I have not used the product yet, as my first tube would not extrude out of the nozzle efficiently, instead it started oozing out of the back by the plunger. Wasted 1/3 of a tube trying to push it our the front nozzle - with only a small trace coming out. (i had cut the front nub off correctly, up to the screw fitting for the nozzle) - so took it back to the store and got another - not used the new one yet.
Date published: 2016-08-18
Rated 5 out of 5 by from it WORKS ive brought similar products from other retailers and they don't last long (crack shrink or just fall out ) but this is doing the job great " does what it says on the tin" though its a tube lol
Date published: 2016-03-28
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