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Product Reviews

  • "Wonderful finish on my lead sheet bay winndows and conservatory. All stains etc fully covered"

    Lead Renovation PaintJ Evans12th SeptemberLead Renovation PaintView Product
  • "I bought this product in the kit format, with moss killers and primer. I treated and coated an asbestos roof in my garden shed that i share with my neighbor.At the end both of us were very pleased with the results, the roof is now safer as the coating provide good encapsulation and it looks nice too. The job was carried about 1 year ago and the coating looks still as a new."

    Asbestos Roof CoatingMorris21st NovemberAsbestos Roof CoatingView Product
  • "We got 3 testers and chose the dark terracotta and the finished roof looks excellent. Kingfisher recommended spraying but we used brushes and still got a really good finish, although it is a big job. "

     Roof Paint - Coating &  Sealant (Kolourseal)Andy Finlay14th November Roof Paint - Coating & Sealant (Kolourseal)View Product
  • "Excellent product which is simple to mix and use. I also bought the Quickpoint gun, pointing Solution and Mortar rake kit - so I had everything required to make a professional job at a fraction of the cost."

    Coloured Pointing MortarDavid Miller08th JanuaryColoured Pointing MortarView Product
  • "I hadn't used Weatherflex before so wasn't sure what to expect but it was very easy to work with and rollered on well to our dashed walls. The finished house in Lakeland Blue is very striking and a huge improvement!"

    Smooth Masonry Paint (Weatherflex)Daniel Burt14th NovemberSmooth Masonry Paint (Weatherflex)View Product
  • "Really pleased with the results; so was my neighbour because he ordered some too!"

    Block &  Paving Sealer (K-Seal) Dave Cole27th NovemberBlock & Paving Sealer (K-Seal) View Product
  • "Bought this in Earth Brown for my parents house. Good quality paint and they are delighted with the result. Would happily recommend to friends and family."

     Roof Paint - Coating &  Sealant (Kolourseal)Mr B McLean13th December Roof Paint - Coating & Sealant (Kolourseal)View Product
  • "absolutely superb product, restored my 16 year old block paving to look like new, I`ve personally reccomended it to friends, colleagues and passers by"

    Restore-A-Drive Coloured Block SealerJohn Lockett11th JanuaryRestore-A-Drive Coloured Block SealerView Product
  • "Definately Kwik by name and Kwik by nature! We used this tool and did a days work every 2 hours! Brilliant."

    Quikpoint Pointing GunD Miller08th JanuaryQuikpoint Pointing GunView Product
  • "Really happy with colour "

    Anti-Mould Paint (Thermapaint)Melissa27th JanuaryAnti-Mould Paint (Thermapaint)View Product

Extreme Climate - Next Generation Water Seal

Coverage: 3-5 sq m / litre
Application: Single Coat, Brush or Low Pressure Spray
Product Code:
Total: 273.42 Inc VAT/£227.85 Ex VAT

Based on 15 reviews
  • Stop penetrating damp with our 100% breathable brick & stone sealer
  • Lasts up to 10 years
  • Reduce thermal loss by up to 30%
  • Reduces condensation & black mould
  • Rated 5 Star's

Extreme Climate ONE COAT water seal stops penetrating damp using the latest fluorocarbon technology to create simply the best performing (100% breathable) brick and stone sealer available today. With a lifespan of up to 10 years and no surface darkening, this formula halts rainwater absorption offering truly exceptional hydrophobic or bead up water repellency. Kingfisher Approved contractors can offer a 10 year re-pointing guarantee, incorporating Extreme Climate, Kingfisher pointing mortar and pointing solution.

Extreme Climate water seal prevents damaging moisture ingress which causes masonry to spall in the freeze / thaw cycle and inhibits moss growth by robbing it of water and nutrients drawn from damp mortar. Using Extreme Climate to dry out a damp wall can also reduce thermal loss by up to 30% because a wet wall is a cold wall and "bleeds" heat to the atmosphere at an accelerated rate.

Drying out with Extreme Climate also reduces the problem of condensation and black mould, which develop on the indoor side of exterior walls when rain saturation cools the wall temperature such that warm moist indoor air condenses on the cold surface. On a related issue, if you have problems with efflorescence or salting which is the unsightly, white staining we see on so many new build walls then Extreme Climate water seal can help by limiting the moisture absorption / evaporation cycle which leaves mineral salts deposited on the surface. Please call us for detailed advice on treating efflorescence.

Extreme Climate water seal also helps to keep buildings clean by forming an effective barrier against airborne dirt and other contaminants, which would otherwise be dissolved by rainwater and leech into the substrate where they inevitably stain the surface.

Finally, if you have previously applied cheaper alternatives which may have worked for a year or less (or not at all!) then this product is for you. Save hundreds or even thousands of pounds on remedial re-pointing, re-plastering and re-decoration by treating your external walls, facades and gables with Extreme Climate, the ultimate water seal for your masonry in extreme weather.

I used extreme climate on a property built of granite. We suffered damp patches internally I have to say the results are amazing and plan to use it again on other parts of the building.


Reviewed by Malcolm L. on

treating stonework

I purchased a sample of the Extreme Climate to test on my 1907 sandstone built house. The sandstone is prous and I'm getting water penetration around the chimney where the cavity is rubble-filled. On a lower part of the house, the solution seems to work well and so I'm intending to buy sufficient to treat both chimney stacks. I can't vouch for the longevity, of course, as yet. Ask me in 10 years time.


Reviewed by Mike J on

Demo Video

Customer Review - Extreme Climate - Next Generation Water Seal

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